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Fix barycentric coordinates calculation #2

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abdelrahman merged 8 commits from debug-barycentric into main 2024-08-26 17:12:45 +00:00
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1 changed files with 3 additions and 8 deletions
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src/model/render.c
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@ -193,15 +193,10 @@ internal TriangleBBox get_triangle_bbox(const Image *img,
} }
internal V3f get_barycentric_coords(V3f a, V3f b, V3f c, V3f p) { internal V3f get_barycentric_coords(V3f a, V3f b, V3f c, V3f p) {
V3f s[2]; V3f x_vec = V3(V3f, f32, c.x, b.x, a.x, a.x, a.x, p.x);
V3f y_vec = V3(V3f, f32, c.y, b.y, a.y, a.y, a.y, p.y);
for (u64 i = 0; i < 2; ++i) { V3f u = cross_product(x_vec, y_vec);
s[i].x = c.elements[i] - a.elements[i];
s[i].y = b.elements[i] - a.elements[i];
s[i].z = a.elements[i] - p.elements[i];
}
V3f u = cross_product(s[0], s[1]);
if (fabsf(u.z) < 1e-2) { if (fabsf(u.z) < 1e-2) {
return (V3f){-1.0f, 1.0f, 1.0f}; return (V3f){-1.0f, 1.0f, 1.0f};
} }