PlayCanvas Engine Changes

### v0.166.4

[FIX] Seams at skybox borders
LDR skyboxs now work with exposure and tonemapping
Added pc.Scene#skyboxIntensity which works as an environment multiplier
Added pc.Scene#skyboxMip to select mip level to use for skybox

### v0.166.3

Removed skybox component.
[FIX] Reject dds / crn texture requests if they fail to load the file URLs.
[FIX] Clamp anisotropy values to avoid WebGL errors.
[FIX] Shader generation when using RGBM texture for emission.
[FIX] Appearance when metalness is 0.
[FIX] Gamma correction artifacts.
[FIX] Cubemap seams on WebGL.

### v0.166.2

[FIX] Work around for Chrome bug that prevents audio from looping

### v0.166.1

[FIX] Don't use opacity when blend mode is BLEND_NONE.
Added BLEND_ADDITIVEALPHA blend mode.
Added vertex color material inputs.
Added support for loading hdr cubemaps and textures.
Added contrast and intensity controls for specular occlusion.

### v0.166.0

Added support for multiple shader variants.
[FIX] Receive shadows.
[FIX] Using same material on skinned and non skinned meshes is now allowed.
[FIX] Add assets that do not have a file field to the resource loader cache.
[FIX] Flipped X axis for cubemaps.

### v0.165.9

[FIX] Shader compilation error for Toksvig.

### v0.165.8

Lerp Toksvig
[FIX] AABB calculation for skinned meshes.
[FIX] Exceptions when changing particle emitter shape at runtime.
[FIX] Clear scene prefiltered properties when skybox is removed.
[FIX] Issue with duplicate models disappearing when the material mapping on the model asset changes.
[FIX] Invalid declaration for chunks.
[FIX] Particle emitter debug shape was twice larger than it should be.
Gamma and tonemapping are no longer global.
Change cubemap resolution if it was resized.

### v0.165.7

[FIX] Shader bug on Nexus 5 fixed by removing vNormalW varying.

### v0.165.6

[FIX] Pre-filtered cubemaps don't effect phong materials
[FIX] Removed deprecated hdr property from pc.Texture

### v0.165.5

[FIX] Shadow clamping issue.
Added asset.resources property and made asset.resource another property
Assets can now load multiple resources
Cubemap resource loader now returns multiple textures if cubemap is prefiltered

### v0.165.4

[FIX] Incorrect shadow clamping.
[FIX] Bug in GPU particles on Intel HD devices.
[FIX] Getting viewMatrix from camera.
[FIX] Reload skybox if it changes.
[FIX] Typo for material chunks.
Added support for prefiltered cubemaps as dds textures.
Simplified using prefiltered cubemaps.
Simplified and optimized shadowmap clamping.
Removed unused varyings in shaders.

### v0.165.3

[FIX] Remove vVertexColor varying from default material shader.

### v0.165.2

[FIX] Shadowmap shader now accounts for selected opacity channel.

### v0.165.1

[FIX] Changing gamma correction now works properly.

### v0.165.0

Added Box-Projected cubemaps.
Added support for custom shader chunks.
Added support for Metalness workflow.
Added support for Refraction.
Added light bitmasks to select which lights affect specific surfaces.
Added support for ETC1 texture compresssion.
Added camera frustum culling.
Added support for controlling shadow map update rate.
Added support for geometry instancing.
Gamma correction is now an enum instead of a boolean.
Added support for changing fragment shader precision.
First direct / spot shadow map is now projected in the vertex shader.
Can now change shadow map sampling per light / material.
Now firing 'remove' event when an asset is removed. If an asset is removed from the asset registry components will remove the reference to that asset.
Now setting texture references to null for materials whose texture assets are removed.
Changed .vs / .ps files to .vert / .frag instead.
Added improvements to cubemap prefiltering.
Added lots of graphics fixes and optimizations.
[FIX] Point light shadows circular artifact.
[FIX] Wrong bias for spot light shadows.
[FIX] Shader error when using phong + ambientTint.

### v0.164.3

Add pc.Application#timeScale

### v0.164.2

[FIX] pc.Mat3 setIdentity was setting 16 values instead of 9
[FIX] Errors if rigid body component is removed
[FIX] Make sure asset ids are ints
[FIX] Documentation fixes

### v0.164.1

[FIX] Make sure there is a collision component when checking for collision events.
[FIX] Remove camera from system's camera list when the camera component is removed.
[FIX] Removed global time variable that prevents multiple applications running on the same page.

### v0.164.0

Added Entity#addComponent and Entity#removeComponent
Deprecated ComponentSystem#addComponent and ComponentSystem#removeComponent
Removed pc.ApplicationContext, replaced with pc.Application everywhere
Added relevant properties from pc.ApplicationContext to pc.Application, root, systems, loader, assets, etc.
[FIX] worldToScreen
[FIX] Camera's no longer effected by entity's scale
[FIX] Fixed height map on Intel GPU

### v0.163.5

[FIX] Cubemap and cubemap filtering related fixes.
[FIX] Changing collision component properties now works without disable/re-enabling component.
[FIX] Mesh particles.
[FIX] Firefox bugs by removing alpha:false from the context creation.
Added saving and loading of single-file DDS cubemaps.
Replaced pc.BODYGROUP_DEFAULT with pc.BODYGROUP_DYNAMIC.
Added sphere spawn shape and initial velocity to particles.
Material system refactoring.
Configurable UV set for all maps.
Configurable RGBA channel(s) for all maps (except normal).
Tiling/Offset now work for all maps.

### v0.163.4

[FIX] Add light property to light component schema.

### v0.163.3

[FIX] Hotfix - Cannot read property 'PIXELFORMAT_RGBA32F' of undefined

### v0.163.2

GPU cubemap prefiltering.
Support for loading RGBA32F DDS textures.
[FIX] CPU particles work with new engine changes.
[FIX] GLSL for mediump devices.

### v0.163.1

[FIX] screenToWorld works again

### v0.163.0

Moved (almost) all API objects into the pc.* namespace
Added CameraComponent#worldToScreen
Initial support for loading DDS textures
Patch Math to add Math.log2
Removed pc.ForwardRenderer from the docs (internal not API)
Hide lots of low-level/non-API classes from the documentation

### v0.162.8

Removed requestAnimationFrame polyfill since browser support is now at 100%.
Added documentation for particlesystem component.
Old particle system was deleted.
Removed 2 from ParticleEmitter2/particle2.
depthTest renamed to depthWrite in particles (that's what it actually does).
Removed unneeded code from simulation.
[FIX] Flickering bug when using CPU wrapping.
[FIX] Particle gamma correction fix

### v0.162.7

Single mipmapped prefiltered cubemap instead of 6 by using EXT_shader_texture_lod. Only enabled when extension exists AND device has less than 16 samplers (mobiles).

### v0.162.6

Added check for more than 65k verts in particle system.
Particle systems wrapBounds are now relative to emitter position instead of camera position.
Particle systems mode parameter now uses enum, not string.
Particle systems depth softening control is now a bit more intuitive.
Added _activeCamera to scene object.
Removed camera property from particle system.
[FIX] Particle systems alignToMotion.
[FIX] Gamma correction on particles in some conditions.
[FIX] Particle shader caching key generation.
[FIX] Runtime CPU-GPU particle switch.
[FIX] Sorting of mesh particles.
[FIX] Mobile particle problems.
[FIX] Depth softening bugs.

### v0.162.5

Added RigidBodyComponent#teleport(Vec3, Quat)
Removed skybox from documentation

### v0.162.4

Added autoPlay to particle systems
Particle systems no longer disable themselves
[FIX] Issue when cloning particles that contained boolean parameters with false values

### v0.162.3

Specular lighting now respects AO maps.

### v0.162.2

Added reset(), stop(), play(), pause() and isPlaying() methods to particle systems
Replaced oneShot property with loop property in particle systems
Non-looped particle emitters do not start emission unless play() is called
[FIX] particles CPU stretching
[FIX] WebGL warning spamming by disallowing particles to be rendered into depth map

### v0.162.1

Added alignToMotion to particle systems.
Exposed shadowBias for light components.
[FIX] Particle stretching.
[FIX] Only alpha sort mesh instances in the main world.
[FIX] Removed debug log.
[FIX] Light intensity not working because of typo.

### v0.162.0

Scene can now have a skybox by setting scene.skybox = cubemap.
Added optional destinations parameter in livelink#send.
Shader now uses scene's prefilteredCubeMap if it's not overridden in material;
[FIX] Light intensity issues
[FIX] Picker can now only select basic and phong material mesh instances. This fixes picking if a sky box is in the scene.
[FIX] Document rigidbody group and mask properties.
[FIX] Missing rigidbody constant BODYGROUP_ENGINE_3.

### v0.161.0

[BREAKING] Texture.maxAnisotropy -> Texture.anisotropy. Device.maxSupportedMaxAnisotropy -> Device.maxAnisotropy
[FIX] Picking and gizmo rendering fixed when depthWrite is false in the scene
Added support for groups and masks to the RigidBody component
Optimized RigidBodySystem update loop to take advantage of groups and masks
Resample textures which are too large for device
Added pc.gfx.Device.readPixels() to read pixels from current render target
Remove low-level graphics logging on start up
Deprecated ScriptComponentSystem.broadcast()
Deprecated ScriptComponent.send()

### v0.160.1

Remove excess console logging

### v0.160.0

Lots of changes in shading, moving towards physically based rendering
Added tonemapping and exposure in pack settings
Support tinting textures in materials
Use RGB format for jpg textures or RGBA otherwise
Added new cubemap assets
Simplified checks for undefined
Added user strict to graphics API files
Removed WebGL validation
Optimized call to getMotionState
Can now create a skybox using a cubemap texture
Deferred texture and framebuffer creation until they are required by the graphics device
[FIX] Fog not blending correctly
[FIX] Tonemapping and fog for particles
[FIX] Mouse input example
[FIX] Wrote namespace for LIGHTTYPE enum.
[FIX] HTML5 Audio API fallback works again. This is relevant to IE that doesn't support Web Audio yet.
[FIX] Picking now works for transparent and/or depth write disabled meshes.

### v0.159.4

[FIX] particlesystem component reset function now works for one shots if lifetime is less than reset interval.

### v0.159.3

[FIX] Emissive maps work again.
[FIX] pc.Curve with no keys
Added CURVE_CATMULL and CURVE_CARDINAL to pc.Curve()
Added filter for shadowResolution to only show up when castShadows is true.

### v0.159.2

[FIX] Cloning CurveSet
[FIX] Cloning ParticleSystem

### v0.159.1

Added metadata to particle system curves to allow 'between two curves' editing in Designer
Changed default values of particle system attributes
Removed maxEmissionTime from particle system
[FIX] Issues with spawnBounds and wrapBounds
[FIX] Appearance of different blend modes for particles
[FIX] Shadow resolution is now available for all light types
[FIX] CurveSet cloning
Updated component attributes descriptions

### v0.159.0

Added point light shadows
Added falloffMode to point lights and spot lights

### v0.158.9

[FIX] Reduced number of varyings required for texture coordinates.
[FIX] Flip particle textures the right way up.

### v0.158.8

[FIX] Prevent min filter warnings in Designer
Cube/sphere maps are now treated as sRGB, added Schlick's fresnel
Velocities are now primary way to specify particle motions
Added default texture for particle systems
Update physics example to latest version of ammo.js
Update README.md

### v0.158.7

Fix needed for new ammo.js
Added velocity graphs and different blend types to particlesystem component

### v0.158.6

Added global gammaCorrection option to pc.scene.Scene
Added gamma option to phong materials

### v0.158.5

[FIX] Multiple lights, 1 or more are shadow casting and 1 or more are not, could cause exception on render.

### v0.158.4

[FIX] Intel XDK now loads textures properly.

### v0.158.3

[FIX] Ambient lighting is now respected when there are no lights enabled.

### v0.158.2

[FIX] Errors when there are no lights in the scene.

### v0.158.1

[FIX] Non-fresnel reflections.

### v0.158.0

New shader system. Supports far more lights, fresnel, parallax mapping and better specular reflectance.

### v0.157.4

[FIX] pc.math.Quat#slerp now works for opposite quaternions.

### v0.157.3

[FIX] Replace canvas.style.width with canvas.style.clientWidth.

### v0.157.2

[FIX] Mouse tests.

### v0.157.0

[FIX] Fullscreen in Chrome - ignored keyboard input.
[FIX] Mouse now attach events on window but data is related to target.

### v0.156.2

[FIX] A mesh instance's bounding box is now guaranteed to be correct when it is queried.
[FIX] pc.input.GamePad#is/wasPressed now respects the latest GamePad API spec.

### v0.156.1

[FIX] Issue where sounds sometimes play twice in the beginning

### v0.156.0

Assets no longer have resource ids, Fixed examples for the new asset format
Use a TextureRequest for skybox textures instead of ImageRequests so that they can be cached correctly and used by other assets like materials without issues
Added textured cube to examples.

### v0.155.1

Added CONTRIB file with CLA details and tips
Use the current Gamepad API
[FIX] Audiosources with 'activate' false no longer play on startup

### v0.155.0

pc.fw.Entity#clone is now synchronous

### v0.154.6

Can now reorder Entities or insert them at specific indices in a parent's child list.

### v0.154.5

[FIX] Negative speed for animations now works as expected.

### v0.154.4

[FIX] Do not abort XHR requests with status 0 when downloading local files.

### v0.154.3

[FIX] Backed out synchronous-clone branch until we fix a bug related to skyboxes.

### v0.154.2

[FIX] Picking for skinned meshes.
[FIX] pc.fw.Entity#clone is now synchronous.

### v0.154.1

[FIX] Phong shader generation where there are no lights enabled.

### v0.154.0

[FIX] Shadows for orthographic cameras.
Removed all dynamic allocations for directional shadow casting lights.
Added LINELOOP and TRIFAN graphics primitives.
Disable blending for post effect quad rendering.
Use a texture for passing bone matrices to vertex shaders if GPU supports it. This avoids having to split the skin up. Performance seems more or less similar.
[FIX] Models with a reflection map now render if no lights are present.
[FIX] Respect a mesh instance's receiveShadow property.
Unprivate the docs for AssetRegistry#find and AssetRegistry#findAll

### v0.153.0

User must now explicitly set the blendType of a material as opacity and opacityMap are no longer doing this automatically.
Removed MaterialResourceLoader, now use MaterialResourceHandler everywhere.
Add nicer error messages if model tries to load material asset which isn't present.

### v0.152.2

Added pc.Vec3#project
Added pc.shape.Sphere#intersectRay
[FIX] Bug where materials with opacity 1 would not become transparent if their opacity changed to less than 1 at runtime

### v0.152.1

[FIX] Typo in the example for pc.resources.ResourceLoader.request
[FIX] Load model even when no material mappings for a model have been found
[FIX] Remove camera and lights debug shapes when a camera gets disabled
Removed color correction post effect
Convert script attributes of type 'vector' to pc.Vec3

### v0.152.0

Re-factor AssetRegistry
[BREAKING] AssetRegistry#update() is replace with AssetRegistry#addGroup() and AssetRegistry#createAndAddAsset()
[BREAKING] AssetRegistry#all() is replaced with AssetRegistry#list([groupName])
Added displayNames to all post effect scripts

### v0.151.2

Removed some parameters from bloom post effect.

### v0.151.1

Merged pull request by b1naryth1ef: Cleaned up build script.

### v0.151.0

Updated build.py for Git

### v0.150.1

Increased decimal precision of camera clip planes to 5.
Show 3 arrows for directional light gizmo.

### v0.150.0

Added PostEffectQueue#setRenderTargetScale which means post effects can use buffers larger or smaller than the canvas
Added GraphNode#findByPath and GraphNode#getPath for querying scene hierarchy.

### v0.149.2

[FIX] Backout last change and use last version of ammo because raycasting works differently in latest version

### v0.149.1

[FIX] Bug with casting collision object to a btRigidBody in raycastFirst.

### v0.149.0

Added shadowDistance property to the scene, beyond which shadows are not rendered.
[FIX] Update the scene's shaders when shadows are toggled.

### v0.148.0

Updated ammo.js to latest kripken master branch

### v0.147.9

[FIX] Typo in default clear options.

### v0.147.8

[FIX] screenToWorld now works for orthographic cameras.

### v0.147.7

Added 'resizecanvas' event fired from the pc.gfx.Device
[FIX] Render targets of post effects are now resized when necessary
Added optimization for events#fire method

### v0.147.6

[FIX] Only add material to material cache if its asset is found in the asset registry

### v0.147.5

[FIX] Delete the cached model when in onAssetChange
[FIX] Add onAssetChange listener even when we're not in the designer so that we catch changes to model mappings that come from the designer via livelink
[FIX] New assets are now added to the asset registry via livelink
Fixes in README.md
Updated examples

### v0.147.4

Added animation example and Playbot model
Added post effects and camera scripts under extras
Added LICENSE file

### v0.147.3

Improve float packing algorithm (used for shadow mapping).
[FIX] postEffects is initialized before enabled

### v0.147.2

[FIX] Frame buffer clearing now works if flags are zero.
[FIX] Documentation fixes for post effects.

### v0.147.1

Documented post effects.

### v0.147.0

When an entity is destroyed it will first disable all of its components.
When a component is initialized its onEnable method will be called.
Added pc.posteffect.PostEffectQueue for managing multiple post effects for a camera. The camera component now has a post effects queue allowing users to add / remove post effects to a camera.
Added example using post effects.
Added various post effects.
Camera system now has an array of active cameras instead of a 'current' camera. The application framework now renders all cameras instead of just the current camera.
Exposed priority, clearColorBuffer, clearDepthBuffer and rect for the camera component, Now supporting pc.Vec2 and pc.Vec4 as runtime types.
All post effects now derive from pc.posteffect.PostEffect.
[FIX] Set particle_time to 0 when a particle emitter is initialized.

### v0.146.1

[FIX] Set state that affects shadow buffer clearing before the clear happens (in particular, depth write).

### v0.146.0

Support for loading models with URL mapping instead of resource_id mapping
Added resource handler for text resources

### v0.145.4

[FIX] Disable simulation before changing the rigidbody type so that simulation will be properly enabled again after the type changes
Improved the docs for applyForce

### v0.145.3

[FIX] Added null check when updating script instances in case some of them are removed from the update list while the loop is in progress

### v0.145.2

Changed camera nearClip and farClip minimum to be 0.0001 and decimal precision to 3 digits

### v0.145.1

[FIX] Remove assignment to constructor property in pc.inherits, seems to fix FF Bug which breaks inheritance randomly!?

### v0.145.0

Added documentation to currentTime and duration in the animation component
Updated docs for pc.math.random
Added examples directory with spinning cube example
Added docs for pc.math.Vec3 parameters
[FIX] Bug where triggerleave / collisionend would not always be fired
[FIX] Removed call to entity.trigger.initialize right after the constructor
[FIX] All tests now pass
[FIX] Rogue 'light' global var
[FIX] Added simulationEnabled in rigidbody_data to avoid enabling / disabling rigidbody simulation multiple times
[FIX] Bug where a model component would not update its model's graph if it started disabled
[FIX] If a collision component is initialised before a rigid body component and a trigger is created, make sure to destroy that trigger when the rigid body is initialised

### v0.144.3

[FIX] Ensure render targets are rendered fullscreen for post fx.

### v0.144.2

[FIX] Error when trying to call script instance#destroy when removing a script component

### v0.144.1

[FIX] Renamed pc.events.initalize to pc.events.attach to prevent it breaking compatibility when adding events to script instances

### v0.144.0

Improved entity enabling / disabling mechanism to include children
Improved component enabling / disabling mechanism
Various optimizations

### v0.143.4

[FIX] Fixed typos in script attribute docs

### v0.143.3

[FIX] Call e.preventDefault in 'touchmove' event to avoid issues in Chrome Android

### v0.143.2

[FIX] Identity texture transform now correctly generated.

### v0.143.1

Optimizations in the script system, obb shapes and materials

### v0.143.0

Call onEnable / onDisable methods on script instances when their script component is enabled / disbled

### v0.142.0

Added enabling / disabling of Entities and Components

### v0.141.1

[FIX] On FFOS, packaged apps does not have content type set correctly for some data formats (e.g. OGG).

### v0.141.0

Added pitch to audiosource component

### v0.140.0

Added input_mouse#wasReleased method

### v0.139.1

Added documentation for decimalPrecision for script attributes

### v0.139.0

Added postInitialize method in scripts

### v0.138.3

[FIX] Script Attributes would not update correctly from the designer
[FIX] Documentation fixes

### v0.138.2

[FIX] Only include texture transforms in Phong materials if they are not the identity matrix

### v0.138.1

[FIX] Update particle emitter code to latest Math API.

### v0.138.0

Added onAttributeChanged method in scripts and 'set' event for script attributes
Default near / far camera clip planes now default to 0.3 and 1000
[FIX] pc.Quat#transformVector now creates a pc.Vec3 result instead of a pc.Quat
[FIX] Error when a collision component has been destroyed and we need to call collision exit events

### v0.137.2

[FIX] Gravity livelink now works with the new Math API.

### v0.137.1

Add support for fullscreen 'screenscanvas' mode in CocoonJS.

### v0.137.0

Exposed material texture transforms in the designer
Added texture tiling, offset and rotation

### v0.136.2

[FIX] UV transforms work again.

### v0.136.1

[FIX] CameraNode#screenToWorld (new Maths API)
[FIX] Global ambient now works again
[FIX] Triggers now work again (new Maths API)

### v0.136.0

[BREAKING] New Maths API
Replaced pc.math.vec2 with pc.Vec2
Replaced pc.math.vec3 with pc.Vec3
Replaced pc.math.vec4 with pc.Vec4
Replaced pc.math.quat with pc.Quat
Replaced pc.math.mat4 with pc.Mat4
See docs for more details

### v0.135.2

[FIX] bumpMapFactor now becomes bumpiness in the Phong material

### v0.135.1

Hide ballsocketjoint from the docs.
[FIX] Prevent the engine throwing an exception on startup if the anisotropic filter extension is not available.

### v0.135.0

Merged model and primitive components
Added cylinder collision

### v0.134.0

[FIX] Collision component cloning issues
[FIX] Fullscreen button should now work in IE11+
[FIX] Capsule resize bug in the designer where the same capsule would be always be edited
Render collision sphere as a sphere rather than a circle
Optimized max anisotropy handling
Removed support in the engine for specular factor map because nobody uses them
Added docs for gloss map on Phong material
Added pc.Color#clone and pc.scene.Material#clone
Support for more Phong material attributes in the designer

### v0.133.2

[FIX] More accurate reporting of delta time in the framework (fixes jittery physics).

### v0.133.1

[FIX] Sphere maps now load into the engine correctly.

### v0.133.0

Changed rigidbody.bodyType to rigidBody.type

### v0.132.1

[FIX] Materials are no longer tied to a single scene (broke picking).

### v0.132.0

Moved Asset and AssetRegistry from pc.fw into pc.asset
Renamed getAsset() to getAssetByResourceId()
Added AssetRegistry.find() and AssetRegistry.findAll(), and deprecated getAssetByName

### v0.131.1

[FIX] Allow PlayCanvas to run in IE11 by avoiding UNSIGNED_BYTE data with vertexAttribPointer if it's not supported.

### v0.131.0

Integrated fog settings with the Designer

### v0.130.3

Updated script component docs

### v0.130.2

Updated script component docs

### v0.130.1

Updated script related documentation

### v0.130.0

Added script attributes support
LightNode#setColor now takes a pc.Color instead of a pc.math.vec3
Changed camera and light node code to be in object notation
[FIX] Changing shadow resolution in Designer works again
[FIX] Reflection map handled correctly in PhongMaterial

### v0.129.2

[FIX] Depth write state caching.
[FIX] Blend function caching now works properly.

### v0.129.1

Removed setFrontFace function.
Added EXP fog and fixed the equation for determining EXP2 fog factor.
[FIX] Light enabling/disabling works in Designer again.

### v0.129.0

[FIX] Cloning Entities with light components works
Added render states to materials
[FIX] Trigger volumes no longer deactivate after a period of in-activity
[FIX] Fixed crash in Designer when collision component is removed

### v0.128.2

[FIX] Setting linear and angular velocity values on a kinematic rigidbody works again
[FIX] Moving a trigger (collision component) works

### v0.128.1

[FIX] Touch co-ordinates now match MouseEvent co-ordinates. i.e. top-left to bottom-right and match the CSS size of the element
More docs to Entity and pc.net.http

### v0.128.0

Added context.touch if the browser has touch controls enabled
Filtering camera fov and orthoHeight based on projection value

### v0.127.3

[FIX] Issues with collision mesh scaling

### v0.127.2

Fix docs for light component

### v0.127.1

Add documentation for light component

### v0.127.0

[BREAKING] Remove all directionallight, pointlight, spotlight components. Replaced with light component

### v0.126.6

[FIX] Light cloning issue
[FIX] Issue when setting range on spotlights
Added support for non-billboarded particles

### v0.126.5

Changed trigger documentation.
Added particle system support - only static emitters are supported for now.

### v0.126.4

[FIX] Error when rigid body entities are null.

### v0.126.3

[FIX] Error when cloning collision components.

### v0.126.2

[FIX] Alpha sorting now uses the bounding box so create a default one.

### v0.126.1

Updated collision event documentation

### v0.126.0

Added light component that combines all other lights into one. (private for now)
Now filtering rigid body properties that are irrelevant to static rigid bodies
Added triggerenter and triggerleave events and now only firing contact, collisionstart, collisionend events between rigid bodies

### v0.125.2

[FIX] Added collision component 'type' in its properties

### v0.125.1

[BREAKING] Remove all old collision* components

### v0.125.0

[FIX] Designer crash when removing a rigidbody component and trying to move the Entity
No longer fire contact events between two static bodies
No longer fire contact events between triggers
Add documenation for collision component
Removed deprecated 2D physics code

### v0.124.0

Added collision component which has the functionality of all the other collision components.

### v0.123.1

[FIX] Opacity of zero now works. Setting an opacity map now sets the correct blend mode on the material.

### v0.123.0

Added collision triggers when an entity only has a collision component and not a rigid body

### v0.122.3

Render transparent meshes back to front order
Change OPEN_ENTITY livelink message to match new Designer format

### v0.122.2

[FIX] Gizmo no longer broken - take a copy of Pack data before opening

### v0.122.1

[FIX] If Ammo not loaded

### v0.122.0

[FIX] Loading pack settings at startup

### v0.121.0

Support for PackSettings livelink messages

### v0.120.2

[FIX] Check the precision capabilities of the GPU and generate shaders accordingly.
Now calling activate internally in rigid body methods that apply forces etc.

### v0.120.1

Added docs for pc.scene.Mesh and pc.scene.MeshInstance.

### v0.120.0

Support for displaying remote cameras in designer

### v0.119.1

[FIX] Force cache-busting off on resources to fix script debugging

### v0.119.0

No longer caching scripts when running from the designer

### v0.118.0

Added component system descriptions

### v0.117.0

[FIX] Docs for pc.input.Controller
[FIX] Docs for pc.fw.ApplicationContext

### v0.116.0

Added pc.input.Keyboard#wasReleased()
[FIX] Capsule rendering in Designer

### v0.115.1

[FIX] Previous change broke kinematic objects

### v0.115.0

Changed setLinearVelocity and setAngularVelocity methods to linearVelocity and angularVelocity properties
Add applyTorque and applyTorqueImpulse to Rigidbody Component
Changed setLinearFactor and setAngularFactor methods to linearFactor and angularFactor properties
Add linearDamping and angularDamping properties to Rigidbody Component

### v0.114.1

[FIX] Update raycasting to the latest Ammo API.

### v0.114.0

Update Ammo (Physics Engine) to be based on Bullet 2.8.1
Allocate less when loading animations

### v0.113.0

Added pc.resources.JsonResourceHandler for loading assets of type 'json'.

### v0.112.0

[FIX] Update setLinearFactor and setAngularFactor to work correctly

### v0.111.5

[FIX] Lighting is now correct for non-uniform scaled objects.

### v0.111.4

[FIX] Handle the case where a single material is referenced by a skinned and an unskinned mesh.

### v0.111.3

Skin splitting works again.
pc.json API now private.

### v0.111.2

[FIX] Sky boxes no longer flicker.

### v0.111.1

[FIX] Default assets list in animation component to [] not null

### v0.111.0

[BREAKING] New Model Asset format
Support for Textures as first-class Assets
Support for Materials as first-class Assets

### v0.110.0

Added ballsocket joint component.

### v0.109.1

[FIX] 109 broke scene rendering/picking in Designer.

### v0.109.0

Added a forward render for scene rendering.
Added Bokeh post effect.
Added depth shader.

### v0.108.0

[FIX] Check for supported audio types when loading for Web Audio API
Added sepia post effect
Added blend post effect
Added edge detect post effect

### v0.107.4

[FIX] Static cubemap component fixed.
Add camera component property to get/set the render target.

### v0.107.3

[FIX] Flip skybox in X.

### v0.107.2

Docs improvements.

### v0.107.1

[FIX] pc.Color accepts another pc.Color as a constructor argument

### v0.107.0

[BREAKING] Removed Bloom Component
[BREAKING] Removed 'offscreen' attribute from Camera Component
[BREAKING] Changed pc.gfx.VertexElementType to pc.gfx.ELEMENTTYPE_
[BREAKING] Removed pc.gfx.VertexElement
[FIX] Cubemap Component no longer crashes
Added new pc.posteffect namespace for Post Effects
Added Bloom, FXAA and Luminosity post effects

### v0.106.2

[FIX] ResourceLoader now correctly loads identical child resources concurrently.

### v0.106.1

Added generic vertex semantics for things like particle data.

### v0.106.0

[BREAKING] Frame buffers are now render targets
[BREAKING] Decoupled PlayCanvas file format from shader code by introducing vertex semantics
[BREAKING] Updated Camera, Primitive, Directional Light, Spot Light and Point Light components to use pc.Color
Application code can create render targets of arbitary pixel format
pc.Color object for representing RGBA colors
[FIX] Camera setOrthoHeight() now updates the matrix

### v0.105.3

[FIX] Updated screenToWorld function to no longer require pc.gfx.Device.getCurrent.

### v0.105.2

Updated pc.gfx docs.

### v0.105.1

[FIX] Correct lookup of precalculatedTangents setting.

### v0.105.0

Engine updated to support multiple canvases on a single page
[BREAKING] pc.gfx.Device.getCurrent() and pc.gfx.Device.setCurrent() removed
pc.gfx.Device now avaiable in pc.fw.ApplicationContext
[FIX] pc.math.vec3.clone creates a proper clone now

### v0.104.5

Store the DOM touch event in pc.input.TouchEvent to allow calling of prevent Default in handler.

### v0.104.4

[FIX] Rigid body system now steps the simulation independent of frame rate.

### v0.104.3

[FIX] Exceptions that are thrown in script constructors or initialize() are no longer swallowed

### v0.104.2

Added support for scaled collision meshes.

### v0.104.1

Documentation fixes for ResourceLoader

### v0.104.0

New pc.resources.ResourceLoader which returns a RSVP.Promise instead of using callbacks

### v0.103.0

Added collisioncapsule component
Engine updated to comply with JSHint
[FIX] No longer possible to pick line geometry
[FIX] Corrected primitive types for bloom and model loading
[FIX] Sounds (Web Audio API) now pause correctly if paused more than once on a single play through

### v0.102.3

[FIX] Updated to latest Web Audio API spec. PlayCanvas apps no longer crash in Firefox Nightly.

### v0.102.2

[FIX] GraphNode right, up and forwards properties now work.
[FIX] pc.math.multiply now creates a result quaternion correctly if not supplied as parameter.

### v0.102.1

[FIX] Don't add collision meshes to the hierarchy.

### v0.102.0

Added new collision mesh component.

### v0.101.1

[FIX] Animation blending works again (broken in 0.99.1).

### v0.101.0

Documented almost all of pc.math and renamed a number of functions for uniformity.

### v0.100.0

Added pc.math.smoothstep and pc.math.smootherstep.
pc.math.pot -> pc.math.powerOfTwo
Removed pc.math trigonometric functions.
Documented the whole quaternion API.
Allow skybox to be rendered at any time with any camera (much more robust and faster too!).

### v0.99.1

Update a skeleton's graph if a time is explicitly set. Prevents you seeing previous animation frame on playing an anim from an entity script, since entity script udpates occur after animation component update.

### v0.99.0

Aspect ratio of Designer-rendered cameras is now fixed at 16/9.
Exposed aspectRatio on camera component.
Added right, up and forwards properties to pc.scene.GraphNode.
Update a skeleton's interpolated keyframes immediately upon setting a new time.

### v0.98.6

Added documenation for pc.fw.Entity#clone()

### v0.98.5

Soften PCF shadows.

### v0.98.4

[FIX] Prevent GLSL pow function from being passed zero which causes glitches on Mac OS X.

### v0.98.3

Optimize setting of vertex buffer attributes in the graphics device.
Simplified and optimized GLSL lighting code.
[FIX] Specular lighting calculation now takes the light color into account.

### v0.98.2

Renamed enums for blend modes and primitive types.
Disable blending for opaque meshes.
Add a blend type to a material that specifies how it should blend when rendered.

### v0.98.1

Added pc.audio.Channel#getDuration() to safely access the duration of the audio clip
Added pc.string.toBool() to convert a string value to a boolean value

### v0.97.2

[FIX] Work around presumed GLSL compiler bug on Mac where directional light appears inverted in Y axis. Code should be equivalent.

### v0.97.1

Optimized WebGL texture state setting.
[FIX] Phong shader now generates correct GLSL for lightmapping with no lights.

### v0.97.0

Add pc.fw.AudioSourceComponent#unpause() to resume playback from paused (instead of using play() which starts from the beginning of the sound)
[FIX] Tabbing away correctly suspends audio in Firefox

### v0.96.6

[FIX] Use parentNode value for element if touch event lands on an SVG element. [Properly this time]

### v0.96.5

[FIX] Use parentNode value for element if touch event lands on an SVG element.

### v0.96.4

[FIX] Fix so that touch position is not null in Firefox when using SVG elements

### v0.96.3

[FIX] Fix to touch events when attached to elements without width and height attributes (i.e. not the canvas)

### v0.96.2

[FIX] No longer call preventDefault() in TouchDevice event handling. User should call it themselves.

### v0.96.1

[FIX] Make sure physics libraries are loaded before loading Entities

### v0.96.0

loadFromTOC function for pc.fw.Application
Added AssetCache for preloading asset metadata
Added pc.fw.ContentFile for where preloaded data is stored
pc.gfx.VertexBufferUsage -> pc.gfx.BUFFER_
pc.gfx.IndexFormat -> pc.gfx.INDEXFORMAT_
Restore gl format of index buffer that is used when primitive is drawn
Made ResourceLoaderDisplay prettier
Deprecate AssetResourceHandler and EntityResourceHandler

### v0.95.0

Added Entity#clone() method
Support opacity on shadow maps (useful for alpha-tested foliage)
Check if isActive() is true before syncing entity to rigidbody

### v0.94.3

[FIX] Procedural cylinder code was generating caps incorrectly, causing NaNs to be generated for tangents.
Renormalize normal and tangent in case the model matrix has a scale in it.

### v0.94.2

Better scaling function for normal map.
[FIX] Fixes for when no lights are enabled.

### v0.94.1

Switched engine back to using precalculated tangents, but can be switched on a device flag.
Change spotlight boundary interpolation.
Fix shadow interaction with non-shadowcasting lights.
All Phong lighting now done in world space.
Reflection maps now lerp towards diffuse color based on reflectivity.
Fix WebGL errors about texture completeness (unitialised texture objects).

### v0.94.0

Engine no longer generate vertex tangents. Instead, it perturbs surface normals using a normal map in the fragment shader.
Added support for heightmap bump mapping.
Added support for gloss maps (per-pixel shininess).
Specular shininess no longer queried from specular map alpha channel (use gloss map instead).
Per pixel opacity no longer queried from diffuse map alpha channel (use opacity map instead).

### v0.93.1

Physics docs corrections.

### v0.93.0

Renamed collisionbox.size to collisionbox.halfExtents

### v0.92.0

First public version of rigidbody component

### v0.91.0

Renamed 'body3d' component to 'rigidbody' component
Added isActive() and activate() to rigidbody component
Better argument options for applyForce() and applyImpulse()

### v0.90.2

relativePoint for Body3d.applyForce and Body3d.applyImpulse is now an optional argument, defaults to 0,0,0
[FIX] Default values for body3d and collisionbox

### v0.90.1

[FIX] Activate body inside a syncTransform() so that livelink movement re-activates

### v0.90.0

[FIX] GraphNode#rotate() and GraphNode#rotateLocal() take can accept a single vector argument like in the docs
Replace Body3d 'static' with 'bodyType' which can be dynamic, kinematic or static.
hasEvent() added to event API to check whether an handler is bound
Working on Body3d component
Add support for contact/collision events
Add support for raycastFirst()
'collisionbox' format changed to single 'size' property
Fire 'livelink:updatetransform' event when entity transform is updated over a livelink

### v0.89.0

Implemented pc.scene.Model#generateWireframe.
Added pc.input.TouchDevice
Added shadow resolution attribute. Removed cast shadows attribute from point light component.

### v0.88.1

Added pc.fw.CameraComponent#screenToWorld.
[FIX] Skybox now renders correctly in Designer.

### v0.88.0

[FIX] Engine now honours toggling of cast shadows in Designer.
pc.gfx.ClearFlag -> pc.gfx.CLEARFLAG
Reworked directional light shadowmap camera frustum calculation.
Set WebGL to treat alpha more similarly to OpenGL.
Corrected aspect ratio of directional light shadow frustum. Added a fudge factor to Z limits of frustum to prevent clipping of shadow casters.
Initial support for inserting one-shot commands into draw call queue (to do things like clearing the depth buffer).

### v0.87.0

Replace event methods .bind()/.unbind() with .on()/.off(). Deprecated bind()/unbind().
[FIX] Designer cameras now no longer create frustum graphics resources (caused WebGL errors).

### v0.86.6

[FIX] Binary skins now partition correctly.

### v0.86.5

[FIX] Final fix for skybox component.

### v0.86.4

[FIX] Skybox now renders at the correct depth.

### v0.86.3

[FIX] Infinite loop for scenes with shadows.

### v0.86.2

[FIX] Only mesh instances marked as shadow caster rendered into shadow map.

### v0.86.1

[FIX] Skybox component updated to new pc.scene API.

### v0.86.0

New Scene library with sorting enabled -- rendering speed boost++!
Support for loading code libraries before Application starts
Replace AppData with application_properties from the Properties resource
Body3D component beta testing
[FIX] Use clientWidth to get canvas size instead of style.width (which is 100%)

### v0.85.4

[FIX] Script instance initialize() method is called when an Entity is created over LiveLink

### v0.85.3

[FIX] Point lights render with the right color in Designer again.
[FIX] pc.input.Controller now handles mouse move properly again.

### v0.85.2

[FIX] Texture filters set incorrectly on JSON model load.

### v0.85.1

Update Body3d transforms after stepping simulation

### v0.85.0

[BREAKING] Mouse and Keyboard events are now passed pc.input.MouseEvent and pc.input.KeyboardEvent respectively. The original browser event is available as the 'event' property.
[BREAKING] Some pc.input enumerations have changed now EVENT_MOUSEMOVE, etc and MOUSEBUTTON_LEFT, etc. They are also featured in the documentation now.
Initial work on Body3d component
[FIX] A problem with editing packs in forked depots has been resolved
[FIX] Primitive Component color works correctly

### v0.84.1

[FIX] Animation component now plays an animation on set in the connected game.

### v0.84.0

New material APIs. See pc.scene.PhongMaterial, DepthMaterial, PickMaterial and BasicMaterial.
[FIX] Updated pad handling in pc.input to the latest GamePad spec.

### v0.83.1

[FIX] Removed some debug comments

### v0.83.0

pc.event.bind() and pc.event.unbind() now take an optional scope parameter to use as 'this' when firing.
Optimized GraphNode#getWorldTransform. It no longer syncs the entire hierarchy, just the path from the root to the queried node
[FIX] Script updates were called after the script component had been removed because events weren't unbound properly
[FIX] Deleting Script Component within update no longer skips an update
[FIX] Deleting Body2d Component with no collision body no longer crashes

### v0.82.6

[FIX] Rotating Body2d Components in Designer works
[FIX] Convert between Eulers and single Angle for Body2d Components more robustly

### v0.82.5

[FIX] 2D collision works again in the Designer

### v0.82.4

[FIX] Prevent rendering of collisioncircle components unless debugRender flag is set

### v0.82.3

[FIX] All components properly updated to new texture API.

### v0.82.2

[FIX] Additional typo in binary texture stream reader.

### v0.82.1

[FIX] binary stream reader to use new texture API.
Fixed reference to entity.close()

### v0.82.0

[BREAKING] Renamed Entity#close to Entity#destroy
[BREAKING] New pc.gfx.Texture API. Much simpler interface more based around properties. pc.gfx.Texture2D and pc.gfx.TextureCube collapsed back into pc.gfx.Texture.
Added much greater control over the pixel format of textures. The API now support creation of L8, L8A8, R5G6B5, R5G5B5A1, R4G4B4A1, R8G8B8 and R8G8B8A8 textures.
Don't expose PickComponent in designer. It doens't work

### v0.81.7

[FIX] cubemap component works again.

### v0.81.6

[FIX] script.broadcast fixed.
[FIX] PickSystem debug rendering works.
[FIX] Set correct filter/address modes on pick buffer texture.

### v0.81.5

Lots of documentation changes to go with the new documentation template

### v0.81.4

[FIX] GraphNode#lookAt now correctly marks the local transform as dirty.

### v0.81.3

[FIX] Prevent audio sources from playing in Designer.

### v0.81.2

[FIX] AudioSourceComponent play function fixed for 2D sounds.

### v0.81.1

[FIX] Fog GLSL fixed.

### v0.81.0

Added support for anisotropic texture filtering.

### v0.80.0

[BREAKING] New API Components and ComponentSystems
[BREAKING] Removed deprecated 'header' Component
[BREAKING] Removed all render() methods from Component systems and scripts
Attach pc.fw.Component for each system that is attached to an Entity
Generate getter/setter properties on Components for properties that are defined in the Component schema
Updated all existing Component Systems to work with new system
Components and scripts updates are driven by events now. Only events that are registered will be called
Added postUpdate() event called after all update() events

### v0.79.3

[FIX] Spotlighting now correctly normalizes the spot direction after it is passed to the fragment shader.

### v0.79.2

Restrict bone limit a little further to allow for more complex shaders.

### v0.79.1

Limit the number of supported bones per skin in order to get around a performance issue on the Mac Mini 2009.

### v0.79.0

[FIX] Body2d works in degrees everywhere
[FIX] pc.math.mat4.fromEulersXYZ
Fixed math unit tests
Added trig functions in degrees pc.math.sin/cos/tan/asin/acos/atan/atan2
Some shader optimizations

### v0.78.1

[FIX][BREAKING] Renamed MouseEvent.buttons to MouseEvent._buttons to avoid clash with new FireFox event property

### v0.78.0

[BREAKING] Renamed ScriptObject method updateFixed() to fixedUpdate()
fixedUpdate() now runs before update()

### v0.77.1

[FIX] Rendering collisionrects works again

### v0.77.0

[BREAKING] All pc.math library functions take degrees instead of radians
[BREAKING] Removed GraphNode methods setParent() and setChildren()
[BREAKING] Update binary model format to use new transform components
[BREAKING] Update animation format to use eulers instead of quaternions for rotations
Split LTM out into distinct position, rotation, scale components, generate LTM/WTM only when dirty
Added methods to quaternion invert(), setFromEulers(), transformVector()
Change Pack format to use position, rotation, scale instead of translate, rotate, scale
Optimized mat4.fromEulerXYZ()
Added GraphNode method translateLocal(), rotateLocal(), rotate()
Added GraphNode methods get/setLocalEulerAngles()
No longer overwrite the exports property in engine as this breaks some nodejs modules
Script component urls field is now a proper array instead of a comma-separated string

### v0.76.0

Engine now loads in nodejs environment
Deprecate requestAnimFrame() and replace with requestAnimationFrame()
Replace requestAnimationFrame shim with new version from Paul Irish

### v0.75.6

[FIX] Offscreen buffer creation deferred until rendering occurs. Fixes bloom on app start up.
[FIX] Bloom no longer crashes the engine when disabled from Designer.

### v0.75.5

[FIX] Point light spheres no longer crash the Designer.
Shader system now uses shared GLSL snippets.

### v0.75.4

[FIX] Reduced shadow mapping artifacts.

### v0.75.3

[FIX] Back out previous fix for pc.math.quat.toMat4()

### v0.75.2

[FIX] Fix for pc.math.quat.toMat4()

### v0.75.1

[FIX] Body2d components were overwriting ltm with shared variable

### v0.75.0

Scale mouse value in pc.input.Controller.getAxis() down to more closely match the gamepad values
[FIX] pc.input.Mouse.isPointerLocker() works correctly

### v0.74.0

Optimized Body2d so that it no longer updates the transform static bodies every frame.
[FIX] pc.math.mat4.getZ() no longer creates a vec3 if one is supplied

### v0.73.0

Fullscreen API support, use enableFullscreen(), disableFullscreen() on pc.fw.Application
PointerLock API support, use enablePointerLock(), disablePointerLock() on pc.input.Mouse
setCanvasFillMode() on pc.fw.Application is used to setup the way the canvas is resized
setCanvasResolution() on pc.fw.Application is used to set the resolution of the canvas
resizeCanvas() on pc.fw.Application performs the resize
getApplication() on pc.fw.Application is used to get the application instance
[FIX] body2d.raycastFirst sometimes returned the wrong entity

### v0.72.0

Clear old events from mouse and keyboard if they are attached to a second element
Allow Controller to take a options argument to pass in existing Mouse/Keyboard/Gamepad input handlers
Updated Closure Compiler

### v0.71.2

[FIX] Check for existing cachedMaterial before setting/deleting when handling shadow maps. Duplicated materials are shared between meshes so must only be deleted once.
[FIX] Handle case where tag isn't supported. e.g. Headless clients

### v0.71.1

Sync hierarchy and mesh AABBs after loading and cloning models.

### v0.71.0

[FIX] Fix picking for cloned models
[FIX] Add new components over LiveLink in correct order.

### v0.70.0

[FIX] CollisionRect renders again

### v0.69.0

[FIX] pc.scene.Model.clone() correctly clones textures, materials and geometry lists

### v0.68.0

[FIX] updates to collisionrect and collisioncircle values in the Designer are reflect in the live game.
[FIX] Set velocity to 0 when updating transform of a body2d component from the Designer

### v0.67.4

[FIX] Eye space z sorting is now based on mesh AABB center rather than WTM position.

### v0.67.3

Fix for 0.67.2.

### v0.67.2

Optimize pc.math.mat4.compose and fromEulerXYZ to use scratch matrices.

### v0.67.1

[FIX] Body2d Component rotates correctly in designer.
Added setPositionAndAngle() to Body2d component

### v0.67.0

[FIX] Body2d Component sometimes creates upside down transforms, because undefined value was being used as index

### v0.66.0

Added TextureCache object to cache loaded textures and use them instead of reloading

### v0.65.0

Added optional ignore value to Body2dComponentSystem.raycastFirst

### v0.64.1

Optimize the number of varying used by the phong shader generator with relation to UV sets and texture transforms.

### v0.64.0

[FIX] Handle onclose event in pc.net.Socket()
[FIX] Body2dComponentSystem.setAngle and setPosition update world transform directly so that hierarchy is in sync

### v0.63.0

Added support for Keep Aspect Ratio in Application Data
Increased gamepad deadzone
[FIX] Changes made to 2D body and collision in Designer are reflected in live game

### v0.62.0

Added pc.debug.display() which displays an object in the corner of the page
Added gamepad support with pc.input.GamePads (Chrome Canary, FF Special build at the mo)
[FIX] Audio that has finished playing no longer restarts when you tab away and return.
Added isPlaying() method to pc.audio.Channel which returns true if the channel is currently playing audio.
[FIX] Binary geometries with vertex colors now load. Also, binary skin cloning is fixed.

### v0.61.1

[FIX] Check that animations have been loaded before playing on AnimationComponentSystem.setModel

### v0.61.0

[FIX] Added support to the animation system for blending two skeletons with different topologies.
[BREAKING] AnimationComponentSystem.setAnimation() renamed to play()

### v0.60.0

Added caching for downloaded files to pc.resources.ResourceLoader. Anything store as a Asset on the server can be cached and multiple instances are cloned (models) or shared.
Added canonical identifiers internally to pc.resources.ResourceLoader. Files in different assets with matches hashes will be loaded from a single source
[BREAKING] Model loader now ignores texture transforms on the texture. Instead they are taken from a material's parameters.
Scene#setGlobalAmbient now also accepts separate r, g and b parameters.
Global ambient now works when there are no lights enabled.
Optimized some code generation for the Phong shader generator, especially for the case when no lights are enabled.

### v0.59.0

[FIX] Fix possible crash when animation components are loaded while the application is running
[FIX] Fix possible crash when loading body2d components while the application is running

### v0.58.0

Updates to private Body2D component

### v0.57.0

[FIX] Entity hierarchy is built and world transforms synced before createComponent is called
Added private Body2D component

### v0.56.0

Added pc.net.Socket which wraps native WebSocket

### v0.55.0

[FIX] Pack loading no longer edits pack data in place, a PackResourceHandler.open returns a copy

### v0.54.2

[FIX] Set up dynamic lights right at the start of a scene flush.

### v0.54.1

[FIX] Rendering would fail for materials with a specular map but no transform applied to the map.

### v0.54.0

Update to new Pack format, with application_data, and hierarchy properties
pc.scene.GraphNode#getLocal/WorldPosition no longer return a reference to the graph node's LTM/WTM but a newly allocated vector.
pc.net.http.delete_ renamed to pc.net.http.del

### v0.53.0

Phong shader now only transforms UVs in the vertex shader if there is a non-identity texture transform set.
GraphNode#lookAt no longer allocates.
Add some named constants to pc.math.vec3 (zero, one, xaxis, yaxis, zaxis).
Allow integer vertex attribs which require normalization on a render. This allows for UINT8 vertex colors in a vertex buffer, for example.

### v0.52.2

Ensure an animation is set on a skeleton before having anim component set skeleton's graph.

### v0.52.1

Re-add Function.extendsFrom until Designer is updated

### v0.52.0

Replaced Function.extendsFrom with pc.inherits.
Added pc.cookie.get/set to use browser cookies.
Binary file format now active but format is likely to go through a number of iterations before stabilizing.
Skin partitioning now operates on a pc.scene.Geometry.

### v0.51.0

Added setVolume() to AudioManager, it affects the volume of all audio sources
Added suspend() and resume() to AudioManager, to pause and resume all audio sources
Allow the passing of a preallocted vector argument to receive the position of LTM/WTM of a graph node.
[FIX] Loading library javascript resources for the second time correctly fires success callback
[FIX] Hierarchy is synced before script.initialize() is called
[FIX] Visualizer camera
Removed deprecated functions pc.each and pc.callback

### v0.50.0

Added pc.audio.isSupported(url) to test if the url to an audio file is a supported format.
[FIX] Prevent crash in pc.audio.Channel3d if stop() is called when using Audio tag (FF/Opera/Safari)
[FIX] ResourceLoaderDisplay works if resources are included in mulitple batches, also sanitize identifier before using as DOM id.
[FIX] Probably fixed #38 by checking for 'loadstart', 'canplaythrough' and 'loadeddata' events to see if Audio tag has loaded.

### v0.49.0

[FIX] Fix infinite loop in lighting

### v0.48.0

Optional support for binary model data
Optimized in place tangent generation
Optimized Geometry#generateWireframe
Add another prototype function for setting a light's color from components.
[FIX] AABB recalculation on a transformation now works properly.
Increase default light radius to 10 (from 1).
Switch bloom component to use Float32Array to pass uniforms to GPU.

### v0.47.0

[FIX] Designer Camera in FF works again
Added event.wheel value to MouseEvent which is normalized value across all browsers
Added scaling to dolly camera so that movement is reduced closer to the selection
Tidied up skybox component.
[FIX] Local state now gets cleared properly.
Moved camera frustum render function into CameraNode class.
Switched from view window to ortho height and aspect ratio.
Update camera aspect ratio on resize.

### v0.46.0

[FIX] Unsupported audio formats no longer hang resource loading in Firefox

### v0.45.0

Option to show debug ResourceLoader in pc.fw.Application

### v0.44.0

Optimized pc.scene.Scene front to back sorting callback.
Added support for Axes to pc.input.Controller.
Refactor of Mouse to support PointerLock and changed event to be based on native MouseEvent.
Changed CameraNode#setViewWindow to optionally take separate x and y values.
[FIX] GraphNode#setLocalPosition to work on Opera (Arguments is not an Array).
[FIX] Phong shader now handles case where specular factor map is only sampler.

### v0.43.0

Optimized Device#clear
Renamed castShadows back to getCastShadows and receiveShadows back to getReceiveShadows
Refactored shadow-mapping (better frustum for directional lights, optimizations)
Optimized Aabb#add to avoid allocations
Fixed shadowmapping GLSL outside of UV bounds

### v0.42.0

Animation file format updated! Reconvert all animation JSON from source FBX files!
Reworked animation API to support skeleton to graph link up via bone names. This fixes the case where the skeleton does not include all the graph nodes.
[FIX] Skin partitioning fixed for geometries with more than one submesh.
Added GraphNode#lookAt and GraphNode#translate.
Added GraphNode#set/getLocalPostion and GraphNode#getWorldPosition.
[FIX] ResourceLoader.request now works if you don't supply a progress function.
Updated Closure Compiler to latest version (fixes new lines at end of code modules in non-minified engine).

### v0.41.2

[FIX] AudioSource correctly plays audio when you add a new component over livelink
[FIX] Cache model (if it exists) on animation component creation.

### v0.41.1

Increase script resource loading timeout from 10s to 60s
Removed debug logging from resource loading

### v0.41.0

Reexposed cast shadows for point light even though it doesn't function (fixes saving).
Make default light radius 10.
Added 'rgb' and 'rgba' types for component properties which are colors.
Local lights are once again just dispatched once per frame.
[FIX] Script resources are loaded correctly on Opera.
Cache geometry scope IDs (seems to give a good performance boost).
Added OAUTH_IFRAME_ID_BASE constant for net.oauth iframe id. Fixed tests.
[FIX] mat4.create() handles input arguments correctly (16 floats or 1 array of floats).
Further optimizations to calculateTangents. Probably about 10x faster than it was originally.

### v0.40.0

Update primitive component to support casting/receiving shadows
Compute/load AABB info for models and primitives
Update Copyright and title in models and primitives
Remove some deprecated calls to pc.callback
[FIX] Large speed increase to Designer Camera, especially in Firefox
[FIX] Script resources which are regular javascript files no longer hang the resource loader.

### v0.39.3

[FIX] If a spotlight's outer cone angle changes, update the shadow camera's FOV.

### v0.39.2

[FIX] Fixed logic for enabling shadow casting on a light more than once.

### v0.39.0

Shadow casting enabled in the pc.scene API for directional and spot lights.
Support multiple simultaneous shadow casting lights.
Render spotlight cone in tools.
Hide cast shadows attribute on point light component for now since this functionality is currently unimplemented.
[FIX] pc.net.OAuth clears away iframes correctly

### v0.38.1

[FIX] Crash in Firefox when loading an exported game with a large number of Entity/Assets.

### v0.38.0

[FIX] Use event.currentTarget instead of target to calculate mouse offset co-ords in pc.input.Mouse

### v0.37.0

[FIX] context.systems.script.send() no longer crashes if you send to an entity that doesn't have a script component
Improved light loading and support for loading distinct light intensity attribute
Added MeshNode API for setting, casting and receiving shadows
Added pc.fw.AppData where application data is loaded into

### v0.36.0

All ComponentSystems can implement an initialize() method which is passed the root entity of a loaded Pack after the Pack is loaded, but before any updates are called
Exposed both inner and outer spotlight cone angles in Designer
Moved light management into pc.scene.Scene. Lighting requires a Scene object to work now
Removed functions pc.scene.LightNode#getNumEnabled() and pc.scene.LightNode#dispatch.
Moved static global lighting functions onto Scene instance

### v0.35.1

[FIX] pc.audio.Listener setVelocity crash on Firefox

### v0.35.0

Correctly render orthographic frustum in Designer
Optimized animation addTime function by caching keyframe indices
Enable PCF filtering of shadow maps
Added spotlight component
Update the orientation of listener in audiolistener components so that supported platforms have correct panning.

### v0.34.0

Added support for distance model parameters in Audio Components

### v0.33.0

New pc.audio.AudioManager
New pc.audio.Sound, pc.audio.Channel, pc.audio.Channel3d, pc.audio.Listener

### v0.32.0

Added ModelComponentSystem.setVisible() to show/hide models
Added currentTime and duration accessors to AnimationComponentSystem
initialise() method is called on all script objects after loading, before first update
[FIX] Script update() is no longer called before the resource loading callback is called

### v0.31.4

Fixed pc.math.vec3.clone.

### v0.31.3

Switched vector, matrix and quaternion code to use Float32Array instead of Array.

### v0.31.2

Some optimizations mainly based around pre-creating objects/arrays to avoid garbage collection.

### v0.31.1

Added first pass at device orientation input handler.
Don't generate tangents on load if the geometry already has them.

### v0.31.0

Added LiveLinkReparentEntityMessage and LiveLinkUpdateEntityNameMessage.
Replaced pc.fw.Entity.reparentByGuid() with pc.fw.Entity.reparent().

### v0.30.1

Added 'step' option to number attributes that are exposed to the designer.
Prevent livelink crashing if window has been closed by user.
[FIX] Creating audio components works.

### v0.30.0

Change max camera FOV to 90.
Added support for 'enumeration' type when exposing vars to the Designer.
[FIX] a couple of leaked globals in graphnode and script_component.
Reinstated the deleteComponent function for the script component system.
[FIX] Final fix for Opera. Now it's just a matter of waiting for next Opera 12.x (for the typed array offset fix).
[FIX] Animation component can handle empty guid list.
Generate wireframe data for models/primitives when the Designer is present.
Remove audio context from non-webkit browsers.
Remove audionode dependency.
Remove upper limit on animation speed.
Updated script component to allow scripts to be tagged as runnable only in 'tools' (i.e. the Designer for the Designer camera script).
Logging levels work in console.
Support for transform in entity data if it's present (loading exported data).
Support for new entity data format with no transform only components.
[FIX] Euler functions were rotating the wrong direction around each axis.
[FIX] toEulerXYZ handles scaled matrices.
[FIX] toEulerXYZ and fromEulerXYZ perform updates in the 'correct' order and are compatible now.

### v0.29.0

[FIX] Fixed up EntityResourceHandler function call to be static.
[FIX] Fixed directionallight/camera components to render correctly using updated Device#draw function.
Added Update Entity Transform message to livelink.
Replace MouseEvent object with createMouseEvent call to wrap extra data onto native MouseEvent
Updated JSON format again. Models are enclosed in an object called 'model' and animations are enclosed in an object called 'animation'.
Added support for wireframe rendering. Call pc.scene.Geometry#generateWireframe on a geometry and then call pc.scene.MeshNode#setRenderStyle(pc.scene.RenderStyle.WIREFRAME)

### v0.28.0

Prevent livelink sending messages to itself.
[FIX] Picking code updated following deletion of SubMesh API.
Handler for OPEN_ENTITY messages correctly handles new entities which have their parent id set, by inserting them if the parent is not in the new entity list but is in the hierarchy.
Added exception throwing for device creation which allows app code to handle problems with WebGL.
[FIX] Fix quaternion copy function.
[FIX] Fog no longer interpolates alpha component of a fragment.
[FIX] pc.shape.Box.containsPoint() works now.

### v0.27.0

[FIX] pc.math.mat4.invert() works now
[FIX] Fix camera frustum rendering and direction light rendering

### v0.26.1

[FIX] build script -o support was broken

### v0.26.0

[BREAKING] Change to json model format. Index buffers are now per geometry rather than per sub-mesh
Simplified full screen quad vertex shader a little for Bloom component
Replace audio buffers with audio element for Firefox

### v0.25.0

[FIX] Scripts are loaded as part of the entity requestBatch now, so callback fires after script instance is created
[FIX] Entity.close() properly closes child entities
[FIX] Primitive components clear away their model when deleted
Replaced some more calls to _getComponentData with getComponentData
[FIX] Removed calls to pc.extend in initialiseComponent() which cause infinite recursion when the data passed in is self-referential
[FIX] AudioSourceComponentSystem.play() and AudioSourceComponentSystem.pause() check that the entity has a AudioSource component before doing anything
Added pc.math.random(min, max) to create random numbers in a range
The delta time (dt) value passed in to Update methods is clamped to a max of 0.1s to prevent it getting very large (especially while debugging)

### v0.24.0

Fix audio in Firefox, remove setSource() method. Use play(entity, name) now.
Added audionode.js shim for Firefox
[FIX] Skeleton nodes with one keyframe now work properly with addTime function.
Added pc.math.quat.copy.
Add the ability to deactivate an animation on load. The animation component can additionally be queried to see if an animation is actually currently playing.
[FIX] Fix the case where an entity's serialized boolean false value causes the value to be incorrectly read from the component data.
Add support for looping and volume for audio sources
[FIX] guessResponseType method correctly handles urls with queries and fragments

### v0.23.0

Fixes to allow PlayCanvas to run in Opera 12
Added support for point light attenuation
Light enable -> setEnabled
Improved point light handling in the framework
Added material plugin for shadowmap program generation
New AudioSource Component using webkitAudioContext to play sounds (audio is disabled on unsupported browsers)
[FIX] Fix problem where material shininess can be zero giving undefined results

### v0.22.0

Added a fixed time step update function to the framework.
Only override format of image elements in Texture2D.prototype.setSource.
Added a variable rate delta time for application.
[FIX] Alpha test now actually works as a render state.

### v0.21.0

The Blinn-Phong program now uses the standard Phong lighting equation.
[FIX] Fixed probable bug in CLOSE_ENTITY message which could be closing the wrong entity.
Added send() and broadcast() methods to ScriptComponentSystem.
Added runtime support for specular factor maps which multiply either the specular material color or the assigned specular map.

### v0.20.0

[FIX] Skinning should now work in all cases.
[FIX] Fix for some keys (e.g. 'n' and 'z') not working in input handler.

### v0.19.0

Added support for fetching binary data in pc.net.http
Added pc.path.getExtension(filename) function

### v0.18.1

[FIX] PickComponentSystem.addShape was referencing an undefined variable 'data'
[FIX] Missing var definitions were assigning to globals

### v0.18.0

Namespace logging functions
Update primitive component to create models and add them to the scene to render
Move picking functionality into the Scene API
Picking API is removed from pc.fw, use pc.scene.Picker
Enable picking of primitives
[FIX] bug when loading multiple copies of the same skin when skin partitioning is active
[FIX] Viewport of back buffer render targets now automatically resize
[FIX] Updated references to old light API on model load

### v0.17.1

Fixed GLSL picking broken in ### v0.17.0

### v0.17.0

Fixed picking for skinned geometry
Added guard to check of labels array is present in entity data. (It isn't in some older entities)

### v0.16.1

AssetResourceHandler supplies a url prefix so that if the code is hosted on a site other than platform.playcanvas.com it can still work

### v0.16.0

Added blending support to animation component.

### v0.15.0

Changed pc.gfx.Device#setCurrent to a static function
Removed pc.gfx.Device#stop
Fix for Designer, Pick Components weren't working
Fix for Point Lights not working
Fix removed old code from cubemap

### v0.14.1

Fix for pc.fw.Application still referencing old _camera variable
Fix for Bloom Component still referencing old _camera variable
Fix for SkyBox Component still referencing old _camera variable

### v0.14.0

Replaced pop() and push() in CameraComponentSystem with setCurrent()

### v0.13.1

Fix mouse down event for left mouse button.

### v0.13.0

Added support for preventDefault and stopPropagation in pc.input.Keyboard
Updated components to initialize the defaults correctly
Auto-register all the shader generators (so the user doesn't have to)

### v0.12.0

hierarchy is synced in Application.start() before first update tick
Added pc.input.MouseEvent
Removed Mouse drag event
Removed legacy references to graph namespace ** pc.graph.procedural is now pc.scene.procedural ** pc.graph.materialplugin is now pc.scene.materialplugin
Removed planereflection component

### v0.7.0

Added first pass at an animation component. Just loads/runs a single animation for now.
Added new render state management API, introducing the idea of global and local state.
Use the alpha channel in a specular map as the per-pixel shininess value.
Fix for Phong GLSL when no lights are activated.
Reworked parallax mapping. Effect now activates if an alpha channel is found in the normal map (containing a height map).
Updated parallax effect in shadowmap sample.
Updated skybox component to work with any camera clip planes. Also now just maintains a geometry instead of a mesh.
Fixed transparency for Maya FBX exports.
Added Visualizer launcher script for Maya (written in Python rather than MEL).
Added runtime support for emissive maps.

### v0.6.0

Added CHANGES file
[FIX] gizmo and pick components no longer deleted when components are updated, should be done manually for now
Added pc.dom namespace for DOM related code
Updated artwork to all use the correct system units (inches).
Stop deserializing entities from message as they are transferred as normal javascript object now
Changed reference from _id to resource_id in entity loader to support new Corazon format
Add resource_id to Entity to support new Corazon format
[FIX] Light component correctly disables light node when it is deleted
Added skeleton docs to pc.gfx.Texture.
Updated pc.gfx.Texture to be a little cleaner and more versatile (now handles canvas, video and image elements as well as byte pixel arrays).
Fleshed out docs for pc.gfx.Texture.

### v0.5.0

ScriptLoader replaces ResourceLoader object
Added toolsRender and toolsUpdate methods to Components
Better rendering for directional lights in the Designer.
Enable backface culling in the engine by default.
Model and Camera components to be deleted correctly.
Added support for scale in animation keyframes.
All artwork is now generated as 1 unit equalling 1 meter.
Tweaks to Ferrari demo assets.
Changed pc.graph.Cameras default clip planes to work better for worlds scaled to meters.
Stop FACT from physically loading texture images.
Handle relative paths which are actually absolute paths on other drives.
Integrated ImageMagick into FACT.
Upgraded some deprecated FBX functions in FACT.
Added backface culling option and a stats panel to Visualizer.
Frame loaded model with the default camera in Visualizer.
Update Visualizer launcher to only call FACT (Python commands stripped).
Fix initial camera offset in Visualizer.
Write PNGs instead of JPG if non-web format textures have an alpha channel.
Updated JSON format to split out opacity into new uniform.

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CHANGES.md

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