add blowUp example

examples/README.md

@@ -4,6 +4,10 @@ A collection of example Processing sketches using *Processing Geometry Suite*. T
 
 All examples are dynamic and/or interactive. Shown below are merely screenshots.
 
+## blowUp
+
+<img src="../resources/examples/blowUp.png" alt="" width="500"/>
+
 ## contourMap
 
 <img src="../resources/examples/contourMap.png" alt="" width="500"/>

examples/blowUp/blowUp.pde

@@ -0,0 +1,74 @@
+import processing.javafx.*;
+import micycle.pgs.*;
+import micycle.pgs.PGS_Coloring.ColoringAlgorithm;
+
+final int[] palette = new int[]{-3196779, -6237555, -16337744, -68513, -77824, -15985089};
+PShape mesh;
+int millisLast;
+int timePeriod = 4000; // ms
+
+void setup() {
+  size(1000, 1000, FX2D);
+  frameRate(60);
+  mesh = initMesh();
+  millisLast = millis();
+}
+
+void draw() {
+  background(0, 0, 40);
+//shape(mesh);
+  randomSeed(0);
+  var step = (float) smoothStep5(triangleWave(0, 1, millis(), timePeriod)); // oscillating alignment in [0...1]
+  PGS_Conversion.getChildren(mesh).forEach(c -> {
+    PShape transform;
+    transform = PGS_Transformation.translate(c, random(-300, 300), random(-300, 300));
+    transform = PGS_Transformation.scale(transform, random(0.5, 2f));
+    transform = PGS_Transformation.rotateAroundCenter(transform, random(0, TWO_PI));
+    transform = PGS_Transformation.align(transform, c, step);
+    transform.setFill(setAlpha(PGS_Conversion.getFillColor(transform), map(step, 1, 0, 0, 255)));
+    transform.setStroke(color(0, map(step, 1, 0, 0, 255)));
+    shape(transform);
+  }
+  );
+
+  if (millis() - millisLast >= timePeriod && step > 0.99) {
+     mesh = initMesh();
+    millisLast = millis();
+  }
+}
+
+PShape initMesh() {
+  var segs = PGS_SegmentSet.graphMatchedSegments(PGS_PointSet.poisson(50, 50, width-50, height-50, random(15, 35)));
+  segs = PGS_SegmentSet.filterAxisAligned(segs, radians(2)); // filter highly horizontal or vertical segments
+  var segsShape = PGS_SegmentSet.toPShape(segs);
+
+  var mesh = PGS_Voronoi.compoundVoronoi(segsShape);
+
+  mesh = PGS_Meshing.simplifyMesh(mesh, 2, false);
+  mesh = PGS_Meshing.stochasticMerge(mesh, choice(3, 5), choice(9999));
+  mesh = PGS_Processing.removeSmallHoles(mesh, 1e9); // remove occasional artifact
+  mesh = PGS_Coloring.colorMesh(mesh, ColoringAlgorithm.RLF, palette);
+  mesh = PGS_Conversion.setAllStrokeColor(mesh, color(0), 2);
+  mesh = PGS_Meshing.smoothMesh(mesh, choice(20,200), true);
+
+
+  return mesh;
+}
+
+static double triangleWave(double min, double max, double time, double timePeriod) {
+  double amplitude = (max - min);
+  double phase = (time / timePeriod) % 1.0;
+  if (phase < 0.5) {
+    return amplitude * (2 * phase) + min;
+  } else {
+    return amplitude * (2 - 2 * phase) + min;
+  }
+}
+
+static double smoothStep5(double x) {
+  return x * x * x * (x * (x * 6. - 15.) + 10.);
+}
+
+public static int setAlpha(int c, float alpha) {
+  return (c & 16777215) | (int) alpha << 24;
+}

examples/moireVoronoi/moireVoronoi.pde

@@ -0,0 +1,40 @@
+import micycle.pgs.*;
+import micycle.pgs.color.ColorUtils;
+import processing.javafx.*;
+
+String shape = "egj{iC}iwikDjnkl@gudHxnbi@b_iwCnof}BnlptHvxy|H`qiwQ|bwdAi`n_@pw{pDcqijDpxelEormsChc~eBim}qCnd~hBmnoF|s{iAyz{gC`otdEsfglCb}j`@`h~c@_~cE|ytyAnzfk@zmyXvvo_A{mtb@~wnfBsi`kBdnohCabxt@znfeBenxmBb{jxAsqmq@pl}b@dcaHtrw]fgspApxvaC_glZ`nqWzjwLnzjOr|sk@zt{XbdrGvsf_Fekl}BjyupJw`|n@rsdWxreU_q|Aza~^cnvaDtggpB}t`jAnsiuAgtsiBz`~|@_dpj@|hwzBgtzoGvn_~D_q`i@dti{An}cIlej~@`fnu@de_c@jb`}A|_lP|mwmBc}rfAnxvsAjihDbo{sChzgb@j~rm@xovv@ttjh@hwcR~gemD_cbGt`fjGn_v~@gmfLznajAiu~h@xmcmAl`kIpyfcAltioE~{nnCtz|w@rvb}Adq}zAfjgy@|fwkA|unrAzfbzC|s`oAywjs@v~s`Aog~Dzido@~doi@zr{r@~e}wAdxpw@za|XxgxdB|wpcA`tnv@nth]d}nxA|g~yJrc}|EchrHzu`V}pv_A|d_Qsd~iD`y`DevigBbxsw@ewinMljbXwaqfBb_iw@qy{zGqhnlB}ycfAmi{GgaeVf_wEq~sTdayu@rt`K|r|dCewec@|f~S{{{}Cggpj@_roqA|kn\\oyfcC}cv`@kud`E_{}C{|_fAp}g`@j`uJlsgeAxpxnFpnw~Fx_um@jtpwBbaylEvmrdDm~lNbqtw@x|hJ~mv\\nh~{C`ijaA`o~fFxxrkGi}hHzqpf@ovvVd|tCyphdBuwcc@k~`}AclkCgruqAvrsh@wk}xEtugf@mlaSd|nm@bojaCx`vwHiwqG|otvBjxh`Av|_wEaxn@pj|lBdzs}AfrfaFlssVle{rGilec@ufjD{ztoAclhhAs`~lEumzxBg~}hCwkcyB}qjjAgjrb@{apaDsw|_Dmiy_BudtCacb_AcqseBwhccB_iox@kz|Zcfa{Aijxd@m{|\\yxyt@l}uDeo}h@jwb[eop`BbzcpDyrfhApqrb@caoc@x}gvE}uhs@h_uKohj\\cvzo@}l{Rctv~Ca|yaBgoheChry@}swyCukttAco~]wiav@g`pgFgjdoBe{utAoscy@mgaxGc~o~@s|enAwesv@ouoKusil@ls}Qaz_tAjdivCuoh\\bwcdCgovz@ty`iB__hd@npolCsemr@n{{IqpisByfa~@{_ne@nrp[mym@l~cdCoqma@~}iiEqi`rApr|}Au|`wDhyhnJo}snB|goiBy}cq@rm~_Caxcq@nkne@mpxu@}prCeppi@i|luDpykAyxwdFgdez@wikfAcnfa@qrjjBku{v@edxg@kjr~@ouo_Cac_`Bc|eQ{qfb@uceXulgM_{v{Bqh`r@{eheBxcgCc|dgBgb|kAy~~tAhegFclzcDqh_M_ohr@iwxcA_loj@qmcxCpizCktb_@u`oXdx`cAiuzfH~vzcAy}{aDaaz]yiggDj}zdAk_bbDfxffBa`aaAfjlEq_puAun}Tgjiu@mhke@{lj^gq|k@_qbB{ssgDzkt{A_u}|Chl{gCieqtBg|iTa`jqHzshpCe`nxAezgE}p`Eej~m@~hmqBwdxxCdvx}@gv`rCn`ouEkrguCoplh@ytl}A|zlu@k}lvAiq~s@sj~qAfosO_cvr@rwsq@e{ya@bt|kD}xgl@tfmm@snk}Azu|mCihn_@|fzoA}xft@w`Ls}xv@ee{jBw`ex@rgjOo`|m@hxumHc_mlAfua[asze@`gwxD_`nqAv||}DoekjC`wi`GqohjA~t_kBuzmtAkx`h@{aboBitquFiecqLwzmyAa{txEap_eB}nftI~p~m@cuvc@";
+PShape leaf;
+
+void setup() {
+  size(1000, 1000, FX2D);
+
+  leaf = PGS_Conversion.fromEncodedPolyline(shape);
+}
+
+void draw() {
+  background(0, 0, 40);
+
+  shape(moireVoronoi(leaf));
+}
+
+PShape moireVoronoi(PShape shape) {
+  var gridPoints = PGS_PointSet.squareGrid(0, 0, width, height, (10 + 181 / 10d));
+  var grid2 = PGS_Conversion.fromPVector(PGS_PointSet.squareGrid(0, 0, width, height, (10 + 181 / 13d)));
+
+  var c = PGS_ShapePredicates.centroid(shape);
+  var gridRotate = PGS_Transformation.rotate(grid2, c, millis() / 2000f);
+  gridPoints.addAll(PGS_Conversion.toPVector(gridRotate));
+
+  var voronoi = PGS_Voronoi.innerVoronoi(gridPoints);
+  var cells = PGS_Conversion.getChildren(voronoi);
+
+  cells.forEach(cell -> {
+    int id = Integer.parseInt(cell.getName());
+    int col = ColorUtils.sinebow(id * 0.001 * 192);
+    cell.setFill(col);
+    cell.setStroke(col);
+    cell.setStrokeWeight(0.5f);
+  });
+
+  return PGS_ShapeBoolean.intersectMesh(PGS_Conversion.flatten(cells), shape);
+}