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-rw-r--r--Master/texmf/doc/asymptote/examples/animations/heatequation.asy76
1 files changed, 0 insertions, 76 deletions
diff --git a/Master/texmf/doc/asymptote/examples/animations/heatequation.asy b/Master/texmf/doc/asymptote/examples/animations/heatequation.asy
deleted file mode 100644
index 3c5708e583f..00000000000
--- a/Master/texmf/doc/asymptote/examples/animations/heatequation.asy
+++ /dev/null
@@ -1,76 +0,0 @@
-import graph3;
-import palette;
-import animate;
-
-settings.tex="pdflatex";
-settings.render=0;
-settings.prc=false;
-unitsize(1cm);
-
-animation a;
-
-currentprojection=perspective(-20,-18,18);
-currentlight=light(1,1,10);
-
-int n=26;
-real L=2.5;
-real dx=2*L/n;
-real CFL=0.125;
-real dt=CFL*dx^2;
-
-real[][] Z=new real[n][n];
-real[][] W=new real[n][n];
-
-guide initcond1=shift((-1,-1))*scale(0.5)*unitcircle;
-guide initcond2=shift((0.5,0))*yscale(1.2)*unitcircle;
-
-real f(pair p) {return (inside(initcond1,p)||inside(initcond2,p)) ? 2 : 0;}
-
-//Initialize
-for(int i=0; i < n; ++i)
- for (int j=0; j < n; ++j)
- Z[i][j]=f((-L,-L)+(2*L/n)*(i,j));
-
-real f(pair t) {
- int i=round((n/2)*(t.x/L+1));
- int j=round((n/2)*(t.y/L+1));
- if(i > n-1) i=n-1;
- if(j > n-1) j=n-1;
- return Z[i][j];
-}
-
-surface sf;
-
-void advanceZ(int iter=20) {
- for(int k=0; k < iter; ++k) {
- for(int i=0; i < n; ++i)
- for(int j=0; j < n; ++j) W[i][j]=0;
- for(int i=1; i < n-1; ++i)
- for(int j=1; j< n-1; ++j)
- W[i][j]=Z[i][j]+(dt/dx^2)*(Z[i+1][j]+Z[i-1][j]+Z[i][j-1]+Z[i][j+1]
- -4*Z[i][j]);
- for(int i=0; i < n; ++i)
- for(int j=0; j < n; ++j)
- Z[i][j]=W[i][j];
- };
-}
-
-pen[] Pal=Rainbow(96);
-
-int endframe=40;
-
-for(int fr=0; fr < endframe; ++fr) {
- if(fr == 0) {// smoothing of initial state; no Spline, but full grid
- advanceZ(3);
- sf=surface(f,(-L,-L),(L,L),nx=n);
- } else // use Spline and fewer grid points to save memory
- sf=surface(f,(-L,-L),(L,L),nx=round(n/2),Spline);
- sf.colors(palette(sf.map(zpart),Pal[0:round(48*max(sf).z)]));
- draw(sf);
- a.add();
- erase();
- advanceZ(30);
-};
-
-label(a.pdf(delay=400,"controls,loop"));
-shipout(bbox(3mm,darkblue+3bp+miterjoin,FillDraw(fillpen=paleblue)),"pdf");