yggdrasil75/stupidsimcpp
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at least dir fix works.

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Yggdrasil75
2026-01-05 14:57:33 -05:00
parent f347637b77
commit b74ba3cfdc
1 changed files with 8 additions and 8 deletions
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16
util/grid/grid3.hpp
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@@ -209,28 +209,28 @@ public:
} }
bool rayCast(const Vec3f& origin, const Vec3f& direction, float maxDist, Vec3f& hitColor) { bool rayCast(const Vec3f& origin, const Vec3f& direction, float maxDist, Vec3f& hitColor) {
direction.normalized(); Vec3f dir = direction.normalized();
if (abs(direction.length()) < EPSILON) return false; if (abs(dir.length()) < EPSILON) return false;
Vec3f invDir = direction.safeInverse(); Vec3f invDir = dir.safeInverse();
Vec3T currentVoxel = origin.floorToT(); Vec3T currentVoxel = origin.floorToT();
if (direction.x == 0 || direction.y == 0 || direction.z == 0) { if (dir.x == 0 || dir.y == 0 || dir.z == 0) {
return specialCases(origin, direction, maxDist, hitColor); return specialCases(origin, dir, maxDist, hitColor);
} }
if (!inGrid(currentVoxel)) { if (!inGrid(currentVoxel)) {
std::pair<float,float> re = rayBoxIntersect(origin, direction); std::pair<float,float> re = rayBoxIntersect(origin, dir);
float tEntry = re.first; float tEntry = re.first;
float tExit = re.second; float tExit = re.second;
if (tEntry < EPSILON || tExit < EPSILON) return false; if (tEntry < EPSILON || tExit < EPSILON) return false;
float tStart = std::max(0.0f, tEntry); float tStart = std::max(0.0f, tEntry);
if (tStart > maxDist) return false; if (tStart > maxDist) return false;
Vec3f gridOrig = origin + direction * tStart; Vec3f gridOrig = origin + dir * tStart;
currentVoxel = gridOrig.floorToT(); currentVoxel = gridOrig.floorToT();
} }
Vec3i8 step = Vec3i8(direction.x >= 0 ? 1 : -1, direction.y >= 0 ? 1 : -1, direction.z >= 0 ? 1 : -1); Vec3i8 step = Vec3i8(dir.x >= 0 ? 1 : -1, dir.y >= 0 ? 1 : -1, dir.z >= 0 ? 1 : -1);
Vec3f tMax; Vec3f tMax;
for (int i = 0; i < 3; i++) { for (int i = 0; i < 3; i++) {
if (step[i] > 0) { if (step[i] > 0) {