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View of /branches/vis15/src/tests/new-tests/zslice2.diderot

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Revision 4497 - (download) (annotate)
Sat Sep 3 14:12:36 2016 UTC (2 years, 6 months ago) by jhr
File size: 861 byte(s)
  working on merge: updating tests with new version 2 syntax
// zslice2
//
// process output with:
// unu 2op exists val.nrrd 0.1 | unu quantize -b 8 -o zslice2.png

int dataSize = 11;
int imgSize = 200;
vec3 orig = [0.0, 0.0, 5.0];
vec3 cVec = [0.0, 1.0, 0.0];
vec3 rVec = [1.0, 0.0, 0.0];

image(3)[] img = image("data/zimg112.nrrd");

field#2(3)[] F = img ⊛ bspln3;
//field#0(3)[] F = img ⊛ tent;

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 = F(pos);
	}
        stabilize;
    }
}

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


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