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fix MyAvatar collision bug at transitions b/w meshes

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This commit is contained in:
Andrew Meadows 2018-08-20 11:42:28 -07:00
parent ead0126365
commit 3068865a6c
1 changed files with 0 additions and 21 deletions
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21
libraries/physics/src/PhysicsEngine.cpp
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@ -28,24 +28,6 @@
#include "PhysicsLogging.h" #include "PhysicsLogging.h"
static bool flipNormalsMyAvatarVsBackfacingTriangles( btManifoldPoint& cp,
const btCollisionObjectWrapper* colObj0Wrap, int partId0, int index0,
const btCollisionObjectWrapper* colObj1Wrap, int partId1, int index1) {
if (colObj1Wrap->getCollisionShape()->getShapeType() == TRIANGLE_SHAPE_PROXYTYPE) {
auto triShape = static_cast<const btTriangleShape*>(colObj1Wrap->getCollisionShape());
const btVector3* v = triShape->m_vertices1;
btVector3 faceNormal = colObj1Wrap->getWorldTransform().getBasis() * btCross(v[1] - v[0], v[2] - v[0]);
float nDotF = btDot(faceNormal, cp.m_normalWorldOnB);
if (nDotF <= 0.0f) {
faceNormal.normalize();
// flip the contact normal to be aligned with the face normal
cp.m_normalWorldOnB += -2.0f * nDotF * faceNormal;
}
}
// return value is currently ignored but to be future-proof: return false when not modifying friction
return false;
}
PhysicsEngine::PhysicsEngine(const glm::vec3& offset) : PhysicsEngine::PhysicsEngine(const glm::vec3& offset) :
_originOffset(offset), _originOffset(offset),
_myAvatarController(nullptr) { _myAvatarController(nullptr) {
@ -88,9 +70,6 @@ void PhysicsEngine::init() {
// in order for its broadphase collision queries to work correctly. Look at how we use // in order for its broadphase collision queries to work correctly. Look at how we use
// _activeStaticBodies to track and update the Aabb's of moved static objects. // _activeStaticBodies to track and update the Aabb's of moved static objects.
_dynamicsWorld->setForceUpdateAllAabbs(false); _dynamicsWorld->setForceUpdateAllAabbs(false);
// register contact filter to help MyAvatar pass through backfacing triangles
gContactAddedCallback = flipNormalsMyAvatarVsBackfacingTriangles;
} }
} }