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tweak dump image settings for better viz of grid cells

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This commit is contained in:
Steve Plimpton
2022-12-14 15:41:01 -07:00
parent 3fea762e30
commit 4efe379b7b
3 changed files with 35 additions and 7 deletions
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14
src/image.cpp
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@ -815,26 +815,34 @@ void Image::draw_triangle(double *x, double *y, double *z, double *surfaceColor)
double s1[3], s2[3], s3[3];
double c1[3], c2[3];
// for grid cell viz:
// using <= if test can leave single-pixel gaps between 2 tris
// using < if test fixes it
// suggested by Nathan Fabian, Nov 2022
MathExtra::sub3 (zlocal, xlocal, s1);
MathExtra::sub3 (ylocal, xlocal, s2);
MathExtra::sub3 (p, xlocal, s3);
MathExtra::cross3 (s1, s2, c1);
MathExtra::cross3 (s1, s3, c2);
if (MathExtra::dot3 (c1, c2) <= 0) continue;
if (MathExtra::dot3 (c1, c2) < 0) continue;
//if (MathExtra::dot3 (c1, c2) <= 0) continue;
MathExtra::sub3 (xlocal, ylocal, s1);
MathExtra::sub3 (zlocal, ylocal, s2);
MathExtra::sub3 (p, ylocal, s3);
MathExtra::cross3 (s1, s2, c1);
MathExtra::cross3 (s1, s3, c2);
if (MathExtra::dot3 (c1, c2) <= 0) continue;
if (MathExtra::dot3 (c1, c2) < 0) continue;
//if (MathExtra::dot3 (c1, c2) <= 0) continue;
MathExtra::sub3 (ylocal, zlocal, s1);
MathExtra::sub3 (xlocal, zlocal, s2);
MathExtra::sub3 (p, zlocal, s3);
MathExtra::cross3 (s1, s2, c1);
MathExtra::cross3 (s1, s3, c2);
if (MathExtra::dot3 (c1, c2) <= 0) continue;
if (MathExtra::dot3 (c1, c2) < 0) continue;
//if (MathExtra::dot3 (c1, c2) <= 0) continue;
double cNormal[3];
cNormal[0] = MathExtra::dot3(camRight, normal);