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View of /trunk/test/zslice1.diderot

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Revision 1115 - (download) (annotate)
Thu May 5 04:42:18 2011 UTC (8 years, 4 months ago) by jhr
File size: 693 byte(s)
  More merging of pure-cfg back into trunk
// zslice1.diderot

string dataFile = "../data/zimg.nrrd";
int dataSize = 9;
int imgSize = 200;
vec3 orig = [0.0, 0.0, 4.0];
vec3 cVec = [0.0, 1.0, 0.0];
vec3 rVec = [1.0, 0.0, 0.0];
image(3)[] img = load (dataFile);
field#2(3)[] F = img ⊛ bspln3;

strand RayCast (int row, int col)
{
    real rr = lerp(-0.5, real(dataSize)-0.5, -0.5, real(row), real(imgSize)-0.5);
    real cc = lerp(-0.5, real(dataSize)-0.5, -0.5, real(col), real(imgSize)-0.5);
    vec3 pos = orig + rr*rVec + cc*cVec;
    output real val = -∞; 

    update
    {
        if (inside (pos,F)) {
          val = 1.0;
	}
        stabilize;
    }
}

initially [ RayCast(r, c) | r in 0..(imgSize-1), c in 0..(imgSize-1) ];

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