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avoid div by zero

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This commit is contained in:
Seth Alves 2019-06-04 12:57:36 -07:00
parent 7ee64258ec
commit 8a32d230a8
1 changed files with 6 additions and 1 deletions
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7
libraries/entities/src/EntityTree.cpp
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@ -827,7 +827,12 @@ EntityItemID EntityTree::evalRayIntersection(const glm::vec3& origin, const glm:
PickFilter searchFilter, OctreeElementPointer& element, float& distance,
BoxFace& face, glm::vec3& surfaceNormal, QVariantMap& extraInfo,
Octree::lockType lockType, bool* accurateResult) {
RayArgs args = { origin, direction, 1.0f / direction, entityIdsToInclude, entityIdsToDiscard,
// calculate dirReciprocal like this rather than with glm's scalar / vec3 template to avoid NaNs.
vec3 dirReciprocal = glm::vec3(direction.x == 0.0f ? 0.0f : 1.0f / direction.x,
direction.y == 0.0f ? 0.0f : 1.0f / direction.y,
direction.z == 0.0f ? 0.0f : 1.0f / direction.z);
RayArgs args = { origin, direction, dirReciprocal, entityIdsToInclude, entityIdsToDiscard,
searchFilter, element, distance, face, surfaceNormal, extraInfo, EntityItemID() };
distance = FLT_MAX;