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Merge pull request #16059 from luiscuenca/fixMultisphereCrash

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BUGZ-1156: Allow collapsing of all multi spheres
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Anthony Thibault 2019-08-15 10:40:29 -07:00 committed by GitHub
commit 4d2e7eaaba
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 8 deletions
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30
libraries/physics/src/MultiSphereShape.cpp
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@ -306,6 +306,7 @@ void MultiSphereShape::spheresFromAxes(const std::vector<glm::vec3>& points, con
float distance = glm::length(axis);
float correntionRatio = radiusRatio * (spheres[j]._radius / maxAverageRadius);
float radius = (correntionRatio < 0.8f * radiusRatio ? 0.8f * radiusRatio : correntionRatio) * spheres[j]._radius;
maxRadius = radius > maxRadius ? radius : maxRadius;
if (sphereCount > 3) {
distance = contractionRatio * distance;
}
@ -317,15 +318,28 @@ void MultiSphereShape::spheresFromAxes(const std::vector<glm::vec3>& points, con
}
}
// Collapse spheres if too close
if (sphereCount == 2) {
int maxRadiusIndex = spheres[0]._radius > spheres[1]._radius ? 0 : 1;
if (glm::length(spheres[0]._position - spheres[1]._position) < 0.2f * spheres[maxRadiusIndex]._radius) {
SphereShapeData newSphere;
newSphere._position = 0.5f * (spheres[0]._position + spheres[1]._position);
newSphere._radius = spheres[maxRadiusIndex]._radius;
spheres.clear();
spheres.push_back(newSphere);
if (sphereCount > 1) {
bool collapsed = false;
for (size_t i = 0; i < spheres.size() - 1; i++) {
for (size_t j = i + 1; j < spheres.size(); j++) {
if (i != j) {
size_t maxRadiusIndex = spheres[i]._radius > spheres[j]._radius ? i : j;
if (glm::length(spheres[i]._position - spheres[j]._position) < 0.2f * spheres[maxRadiusIndex]._radius) {
SphereShapeData newSphere;
newSphere._position = _midPoint;
newSphere._radius = maxRadius;
spheres.clear();
spheres.push_back(newSphere);
collapsed = true;
break;
}
}
}
if (collapsed) {
break;
}
}
}
}