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SiStER_interp_markers_to_shear_nodes.m
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SiStER_interp_markers_to_shear_nodes.m
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function [n2interp] = SiStER_interp_markers_to_shear_nodes(xm,ym,icn,jcn,quad,x,y,varargin)
% [n2interp] = SiStER_interp_markers_to_shear_nodes(xm,ym,icn,jcn,quad,x,y,varargin)
% interpolates marker properties to shear nodes
% First cut - J.A. Olive, March 2011
% Modified by E. Mittelstaedt, April 2011, to allow variable inputs.
% Modified by B.Z. Klein, Spring 2014, for speedup
% Modified by B.Z. Klein, Summer 2014, for further speedup (vectorized)
Nx=length(x);
Ny=length(y);
dx=diff(x);
dy=diff(y);
% MITTELSTAEDT - check for number of properties to interpolate
numV = size(varargin,2);
% MITTELSTAEDT % establish interpolants matrices
n2interp = repmat(struct('data', zeros(Ny,Nx)), 1, numV);
JCN = interp1(x, 1:length(x), xm, 'nearest', 'extrap'); %% these are like the jcn and icn elsewhere, except the nodes are centered instead of upper left.
ICN = interp1(y, 1:length(y), ym, 'nearest', 'extrap'); %% this makes a lot of the indexing much simpler below.
%% Interior Cells
center = jcn>1 & jcn<Nx & icn>1 & icn<Ny;
shiftLeft = jcn<Nx-1 & icn>1 & icn<Ny;
shiftUp = jcn>1 & jcn<Nx & icn<Ny-1;
shiftBoth = jcn<Nx-1 & icn<Ny-1;
cell1 = center & ((xm-x(JCN)) > 0) & ((ym - y(ICN)) > 0); %% these are logical arrays that index the original quadrants
cell2 = shiftLeft & ((xm-x(JCN)) < 0) & ((ym - y(ICN)) > 0);
cell3 = shiftBoth & ((xm-x(JCN)) < 0) & ((ym - y(ICN)) < 0);
cell4 = shiftUp & ((xm-x(JCN)) > 0) & ((ym - y(ICN)) < 0);
%%% WEIGHTING (equal for now because that is what I'm running)
wc1 = 0.25;
wc2 = 0.25;
wc3 = 0.25;
wc4 = 0.25;
% cell 1 (i,j,1)
dxm = xm(cell1) - x(JCN(cell1));
dym = ym(cell1) - y(ICN(cell1));
ddx = dx(JCN(cell1));
ddy = dy(ICN(cell1));
wm1 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w1 = accumarray([ICN(cell1)', JCN(cell1)'], wm1);
% cell 2 (i, j-1, 2)
dxm = xm(cell2) - x(JCN(cell2));
dym = ym(cell2) - y(ICN(cell2));
ddx = dx(JCN(cell2)-1);
ddy = dy(ICN(cell2));
wm2 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w2 = accumarray([ICN(cell2)', JCN(cell2)'], wm2);
% cell 3 (i-1, j-1, 3)
dxm = xm(cell3) - x(JCN(cell3));
dym = ym(cell3) - y(ICN(cell3));
ddx = dx(JCN(cell3)-1);
ddy = dy(ICN(cell3)-1);
wm3 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w3 = accumarray([ICN(cell3)', JCN(cell3)'], wm3);
% cell 4 (i-1, j, 4)
dxm = xm(cell4) - x(JCN(cell4));
dym = ym(cell4) - y(ICN(cell4));
ddx = dx(JCN(cell4));
ddy = dy(ICN(cell4)-1);
wm4 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w4 = accumarray([ICN(cell4)', JCN(cell4)'], wm4);
%loop over material properties to interpolate
for vn = 1:numV
n2interp(vn).data = (wc1*accumarray([ICN(cell1)', JCN(cell1)'], varargin{vn}(cell1).*wm1)./w1 + ...
wc2*accumarray([ICN(cell2)', JCN(cell2)'], varargin{vn}(cell2).*wm2)./w2 + ...
wc3*accumarray([ICN(cell3)', JCN(cell3)'], varargin{vn}(cell3).*wm3)./w3 + ...
wc4*accumarray([ICN(cell4)', JCN(cell4)'], varargin{vn}(cell4).*wm4)./w4)./...
(wc1+wc2+wc4+wc4);
end
%% EDGES
%%% top edge
topEdge = jcn>1 & jcn<Nx & icn==1;
shifted = jcn<Nx-1 & icn==1;
% cell 1
cell1 = shifted & quad==2;
ddx = dx(JCN(cell1)-1);
ddy = dy(1);
dxm = xm(cell1) - x(JCN(cell1));
dym = ym(cell1) - y(ICN(cell1));
wm1 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w1 = accumarray([ICN(cell1)', JCN(cell1)'], wm1);
% cell 2
cell2 = topEdge & quad==1;
ddx = dx(JCN(cell2));
ddy = dy(1);
dxm = xm(cell2) - x(JCN(cell2));
dym = ym(cell2) - y(ICN(cell2));
wm2 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w2 = accumarray([ICN(cell2)', JCN(cell2)'], wm2);
%loop over material properties to interpolate
for vn = 1:numV
temp = (wc1*accumarray([ICN(cell1)', JCN(cell1)'], varargin{vn}(cell1).*wm1)./w1 + ...
wc2*accumarray([ICN(cell2)', JCN(cell2)'], varargin{vn}(cell2).*wm2)./w2)/...
(wc1+wc2);
n2interp(vn).data(1,2:end) = temp(2:end);
end
clear w1 w2
%%% bottom edge
bottomEdge = jcn>1 & jcn<Nx & icn==Ny-1;
shifted = jcn<Nx-1 & icn==Ny-1;
% cell 1
cell1 = shifted & quad==3;
ddx = dx(JCN(cell1)-1);
ddy = dy(Ny-1);
dxm = xm(cell1) - x(JCN(cell1));
dym = ym(cell1) - y(end-1);
wm1 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w1 = accumarray([ones(sum(cell1),1), JCN(cell1)'], wm1);
% cell 2
cell2 = bottomEdge & quad==4;
ddx = dx(JCN(cell2));
ddy = dy(Ny-1);
dxm = xm(cell2) - x(JCN(cell2));
dym = ym(cell2) - y(end-1);
wm2 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w2 = accumarray([ones(sum(cell2),1), JCN(cell2)'], wm2);
%loop over material properties to interpolate
for vn = 1:numV
temp = (wc1*accumarray([ones(sum(cell1),1), JCN(cell1)'], varargin{vn}(cell1).*wm1)./w1 + ...
wc2*accumarray([ones(sum(cell2),1), JCN(cell2)'], varargin{vn}(cell2).*wm2)./w2)/...
(wc1+wc2);
n2interp(vn).data(Ny,2:end) = temp(2:end);
end
%%% left edge
leftEdge = jcn==1 & icn>1 & icn<Ny;
shifted = jcn==1 & icn<Ny-1;
% cell 1
cell1 = shifted & quad==4;
ddx = dx(1);
ddy = dy(ICN(cell1)-1);
dxm = xm(cell1) - x(1);
dym = ym(cell1) - y(ICN(cell1));
wm1 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w1 = accumarray([ICN(cell1)', ones(sum(cell1),1)], wm1);
% cell 2
cell2 = leftEdge & quad==1;
ddx = dx(1);
ddy = dy(ICN(cell2));
dxm = xm(cell2) - x(1);
dym = ym(cell2) - y(ICN(cell2));
wm2 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w2 = accumarray([ICN(cell2)', ones(sum(cell2),1)], wm2);
%loop over material properties to interpolate
for vn = 1:numV
temp = (wc1*accumarray([ICN(cell1)', ones(sum(cell1),1)], varargin{vn}(cell1).*wm1)./w1 + ...
wc2*accumarray([ICN(cell2)', ones(sum(cell2),1)], varargin{vn}(cell2).*wm2)./w2)/...
(wc1+wc2);
n2interp(vn).data(2:end-1, 1) = temp(2:end);
end
%%% right edge
rightEdge = jcn==Nx-1 & icn>1 & icn<Ny;
shifted = jcn==Nx-1 & icn<Ny-1;
% cell 1
cell1 = shifted & quad==3;
ddx = dx(Nx-1);
ddy = dy(ICN(cell1)-1);
dxm = xm(cell1) - x(Nx-1);
dym = ym(cell1) - y(ICN(cell1));
wm1 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w1 = accumarray([ICN(cell1)', ones(sum(cell1),1)], wm1);
% cell 2
cell2 = rightEdge & quad==2;
ddx = dx(Nx-1);
ddy = dy(ICN(cell2));
dxm = xm(cell2) - x(Nx-1);
dym = ym(cell2) - y(ICN(cell2));
wm2 = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)./(ddx.*ddy);
w2 = accumarray([ICN(cell2)', ones(sum(cell2),1)], wm2);
%loop over material properties to interpolate
for vn = 1:numV
temp = (wc1*accumarray([ICN(cell1)', ones(sum(cell1),1)], varargin{vn}(cell1).*wm1)./w1 + ...
wc2*accumarray([ICN(cell2)', ones(sum(cell2),1)], varargin{vn}(cell2).*wm2)./w2)/...
(wc1+wc2);
n2interp(vn).data(2:end-1, Nx) = temp(2:end);
end
%% CORNERS
% upper left
upperLeft = jcn==1 & icn==1 & quad==1;
ddx = dx(1);
ddy = dy(1);
dxm = xm(upperLeft) - x(1);
dym = ym(upperLeft) - y(1);
wm = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)/(ddx*ddy);
wco = sum(wm);
for vn = 1:numV
n2interp(vn).data(1,1) = sum(varargin{vn}(upperLeft).*wm)./wco;
end
% upper right
upperRight = icn==1 & jcn==Nx-1 & quad==2;
ddx = dx(Nx-1);
ddy = dy(1);
dxm = xm(upperRight) - x(Nx-1);
dym = ym(upperRight) - y(1);
wm = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)/(ddx*ddy);
wco = sum(wm);
for vn = 1:numV
n2interp(vn).data(1,Nx) = sum(varargin{vn}(upperRight).*wm)./wco;
end
% lower Right
lowerRight = icn==Ny-1 & jcn==Nx-1 & quad==3;
ddx = dx(Nx-1);
ddy = dy(Ny-1);
dxm = xm(lowerRight) - x(Nx-1);
dym = ym(lowerRight) - y(Ny-1);
wm = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)/(ddx*ddy);
wco = sum(wm);
for vn = 1:numV
n2interp(vn).data(Ny,Nx) = sum(varargin{vn}(lowerRight).*wm)./wco;
end
% lower left
lowerLeft = icn==Ny-1 & jcn==1 & quad==4;
ddx = dx(1);
ddy = dy(Ny-1);
dxm = xm(lowerLeft) - x(1);
dym = ym(lowerLeft) - y(Ny-1);
wm = 1 - (dxm.*dym + (ddx-dxm).*dym + (ddy-dym).*dxm)/(ddx*ddy);
wco = sum(wm);
for vn = 1:numV
n2interp(vn).data(Ny,1) = sum(varargin{vn}(lowerLeft).*wm)./wco;
end