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fix crash for computing inertia for btBvhTriangleMeshShape

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This commit is contained in:
Andrew Meadows 2018-06-15 14:31:51 -07:00
parent 551bfac85e
commit 670e07bbf5
1 changed files with 5 additions and 3 deletions
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8
libraries/physics/src/ObjectMotionState.cpp
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@ -92,7 +92,7 @@ void ObjectMotionState::setMass(float mass) {
} }
float ObjectMotionState::getMass() const { float ObjectMotionState::getMass() const {
if (_shape) { if (_shape && _shape->getShapeType() != TRIANGLE_MESH_SHAPE_PROXYTYPE) {
// scale the density by the current Aabb volume to get mass // scale the density by the current Aabb volume to get mass
btTransform transform; btTransform transform;
transform.setIdentity(); transform.setIdentity();
@ -348,8 +348,10 @@ void ObjectMotionState::updateLastKinematicStep() {
void ObjectMotionState::updateBodyMassProperties() { void ObjectMotionState::updateBodyMassProperties() {
float mass = getMass(); float mass = getMass();
btVector3 inertia(0.0f, 0.0f, 0.0f); btVector3 inertia(1.0f, 1.0f, 1.0f);
_body->getCollisionShape()->calculateLocalInertia(mass, inertia); if (mass > 0.0f) {
_body->getCollisionShape()->calculateLocalInertia(mass, inertia);
}
_body->setMassProps(mass, inertia); _body->setMassProps(mass, inertia);
_body->updateInertiaTensor(); _body->updateInertiaTensor();
} }