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[diderot] Annotation of /trunk/test/vr.diderot
Annotation of /trunk/test/vr.diderot
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Revision 3064 -
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jhr |
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// vr.diderot
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//
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// volume rendering example in Diderot
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//
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input string dataFile; // name of dataset
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input real stepSz; // size of steps
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input vec<3> light;
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input int wid = 640;
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input int ht = 480;
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image[3] img = image (dataFile);
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field#1(3)[3] F = bspln3 ⊛ img;
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strand RayCast (int row, int col)
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{
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vec<3> dir = (real(row), real(col), 0.0);
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vec<3> pos = (0.0, 0.0, 0.0);
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real t = 0.0;
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real[4] color = (0.0, 0.0, 0.0, 0.0);
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update
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{
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vec<3> pt = pos + t*dir;
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t = t + stepSz;
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vec<3> g = (D F)(pt);
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color = over(color, phong(light, g, txf(F(pt))));
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if (color[3] >= 0.999)
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stabilize;
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}
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}
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initially
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[ RayCast(r, c) | r in 0 .. ht-1, c in 0 .. wid-1 ];
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