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Update Bullet to the latest commit 126b676
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@@ -26,61 +26,55 @@ subject to the following restrictions:
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#define USE_PERSISTENT_CONTACTS 1
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btBox2dBox2dCollisionAlgorithm::btBox2dBox2dCollisionAlgorithm(btPersistentManifold* mf,const btCollisionAlgorithmConstructionInfo& ci,const btCollisionObjectWrapper* obj0Wrap,const btCollisionObjectWrapper* obj1Wrap)
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: btActivatingCollisionAlgorithm(ci,obj0Wrap,obj1Wrap),
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m_ownManifold(false),
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m_manifoldPtr(mf)
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btBox2dBox2dCollisionAlgorithm::btBox2dBox2dCollisionAlgorithm(btPersistentManifold* mf, const btCollisionAlgorithmConstructionInfo& ci, const btCollisionObjectWrapper* obj0Wrap, const btCollisionObjectWrapper* obj1Wrap)
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: btActivatingCollisionAlgorithm(ci, obj0Wrap, obj1Wrap),
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m_ownManifold(false),
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m_manifoldPtr(mf)
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{
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if (!m_manifoldPtr && m_dispatcher->needsCollision(obj0Wrap->getCollisionObject(),obj1Wrap->getCollisionObject()))
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if (!m_manifoldPtr && m_dispatcher->needsCollision(obj0Wrap->getCollisionObject(), obj1Wrap->getCollisionObject()))
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{
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m_manifoldPtr = m_dispatcher->getNewManifold(obj0Wrap->getCollisionObject(),obj1Wrap->getCollisionObject());
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m_manifoldPtr = m_dispatcher->getNewManifold(obj0Wrap->getCollisionObject(), obj1Wrap->getCollisionObject());
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m_ownManifold = true;
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}
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}
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btBox2dBox2dCollisionAlgorithm::~btBox2dBox2dCollisionAlgorithm()
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{
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if (m_ownManifold)
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{
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if (m_manifoldPtr)
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m_dispatcher->releaseManifold(m_manifoldPtr);
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}
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}
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void b2CollidePolygons(btManifoldResult* manifold, const btBox2dShape* polyA, const btTransform& xfA, const btBox2dShape* polyB, const btTransform& xfB);
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void b2CollidePolygons(btManifoldResult* manifold, const btBox2dShape* polyA, const btTransform& xfA, const btBox2dShape* polyB, const btTransform& xfB);
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//#include <stdio.h>
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void btBox2dBox2dCollisionAlgorithm::processCollision (const btCollisionObjectWrapper* body0Wrap,const btCollisionObjectWrapper* body1Wrap,const btDispatcherInfo& dispatchInfo,btManifoldResult* resultOut)
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void btBox2dBox2dCollisionAlgorithm::processCollision(const btCollisionObjectWrapper* body0Wrap, const btCollisionObjectWrapper* body1Wrap, const btDispatcherInfo& dispatchInfo, btManifoldResult* resultOut)
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{
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if (!m_manifoldPtr)
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return;
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const btBox2dShape* box0 = (const btBox2dShape*)body0Wrap->getCollisionShape();
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const btBox2dShape* box1 = (const btBox2dShape*)body1Wrap->getCollisionShape();
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resultOut->setPersistentManifold(m_manifoldPtr);
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b2CollidePolygons(resultOut,box0,body0Wrap->getWorldTransform(),box1,body1Wrap->getWorldTransform());
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b2CollidePolygons(resultOut, box0, body0Wrap->getWorldTransform(), box1, body1Wrap->getWorldTransform());
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// refreshContactPoints is only necessary when using persistent contact points. otherwise all points are newly added
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if (m_ownManifold)
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{
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resultOut->refreshContactPoints();
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}
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}
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btScalar btBox2dBox2dCollisionAlgorithm::calculateTimeOfImpact(btCollisionObject* /*body0*/,btCollisionObject* /*body1*/,const btDispatcherInfo& /*dispatchInfo*/,btManifoldResult* /*resultOut*/)
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btScalar btBox2dBox2dCollisionAlgorithm::calculateTimeOfImpact(btCollisionObject* /*body0*/, btCollisionObject* /*body1*/, const btDispatcherInfo& /*dispatchInfo*/, btManifoldResult* /*resultOut*/)
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{
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//not yet
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return 1.f;
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}
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struct ClipVertex
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{
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btVector3 v;
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@@ -89,16 +83,16 @@ struct ClipVertex
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//b2ContactID id;
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};
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#define b2Dot(a,b) (a).dot(b)
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#define b2Mul(a,b) (a)*(b)
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#define b2MulT(a,b) (a).transpose()*(b)
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#define b2Cross(a,b) (a).cross(b)
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#define btCrossS(a,s) btVector3(s * a.getY(), -s * a.getX(),0.f)
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#define b2Dot(a, b) (a).dot(b)
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#define b2Mul(a, b) (a) * (b)
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#define b2MulT(a, b) (a).transpose() * (b)
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#define b2Cross(a, b) (a).cross(b)
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#define btCrossS(a, s) btVector3(s* a.getY(), -s* a.getX(), 0.f)
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int b2_maxManifoldPoints =2;
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int b2_maxManifoldPoints = 2;
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static int ClipSegmentToLine(ClipVertex vOut[2], ClipVertex vIn[2],
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const btVector3& normal, btScalar offset)
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const btVector3& normal, btScalar offset)
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{
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// Start with no output points
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int numOut = 0;
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@@ -133,7 +127,7 @@ static int ClipSegmentToLine(ClipVertex vOut[2], ClipVertex vIn[2],
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// Find the separation between poly1 and poly2 for a give edge normal on poly1.
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static btScalar EdgeSeparation(const btBox2dShape* poly1, const btTransform& xf1, int edge1,
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const btBox2dShape* poly2, const btTransform& xf2)
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const btBox2dShape* poly2, const btTransform& xf2)
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{
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const btVector3* vertices1 = poly1->getVertices();
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const btVector3* normals1 = poly1->getNormals();
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@@ -151,8 +145,8 @@ static btScalar EdgeSeparation(const btBox2dShape* poly1, const btTransform& xf1
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int index = 0;
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btScalar minDot = BT_LARGE_FLOAT;
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if( count2 > 0 )
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index = (int) normal1.minDot( vertices2, count2, minDot);
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if (count2 > 0)
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index = (int)normal1.minDot(vertices2, count2, minDot);
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btVector3 v1 = b2Mul(xf1, vertices1[edge1]);
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btVector3 v2 = b2Mul(xf2, vertices2[index]);
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@@ -162,8 +156,8 @@ static btScalar EdgeSeparation(const btBox2dShape* poly1, const btTransform& xf1
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// Find the max separation between poly1 and poly2 using edge normals from poly1.
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static btScalar FindMaxSeparation(int* edgeIndex,
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const btBox2dShape* poly1, const btTransform& xf1,
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const btBox2dShape* poly2, const btTransform& xf2)
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const btBox2dShape* poly1, const btTransform& xf1,
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const btBox2dShape* poly2, const btTransform& xf2)
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{
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int count1 = poly1->getVertexCount();
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const btVector3* normals1 = poly1->getNormals();
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@@ -174,9 +168,9 @@ static btScalar FindMaxSeparation(int* edgeIndex,
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// Find edge normal on poly1 that has the largest projection onto d.
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int edge = 0;
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btScalar maxDot;
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if( count1 > 0 )
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edge = (int) dLocal1.maxDot( normals1, count1, maxDot);
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btScalar maxDot;
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if (count1 > 0)
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edge = (int)dLocal1.maxDot(normals1, count1, maxDot);
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// Get the separation for the edge normal.
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btScalar s = EdgeSeparation(poly1, xf1, edge, poly2, xf2);
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@@ -224,7 +218,7 @@ static btScalar FindMaxSeparation(int* edgeIndex,
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}
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// Perform a local search for the best edge normal.
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for ( ; ; )
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for (;;)
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{
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if (increment == -1)
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edge = bestEdge - 1 >= 0 ? bestEdge - 1 : count1 - 1;
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@@ -285,14 +279,14 @@ static void FindIncidentEdge(ClipVertex c[2],
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int i2 = i1 + 1 < count2 ? i1 + 1 : 0;
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c[0].v = b2Mul(xf2, vertices2[i1]);
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// c[0].id.features.referenceEdge = (unsigned char)edge1;
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// c[0].id.features.incidentEdge = (unsigned char)i1;
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// c[0].id.features.incidentVertex = 0;
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// c[0].id.features.referenceEdge = (unsigned char)edge1;
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// c[0].id.features.incidentEdge = (unsigned char)i1;
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// c[0].id.features.incidentVertex = 0;
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c[1].v = b2Mul(xf2, vertices2[i2]);
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// c[1].id.features.referenceEdge = (unsigned char)edge1;
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// c[1].id.features.incidentEdge = (unsigned char)i2;
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// c[1].id.features.incidentVertex = 1;
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// c[1].id.features.referenceEdge = (unsigned char)edge1;
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// c[1].id.features.incidentEdge = (unsigned char)i2;
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// c[1].id.features.incidentVertex = 1;
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}
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// Find edge normal of max separation on A - return if separating axis is found
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@@ -303,10 +297,9 @@ static void FindIncidentEdge(ClipVertex c[2],
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// The normal points from 1 to 2
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void b2CollidePolygons(btManifoldResult* manifold,
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const btBox2dShape* polyA, const btTransform& xfA,
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const btBox2dShape* polyB, const btTransform& xfB)
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const btBox2dShape* polyA, const btTransform& xfA,
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const btBox2dShape* polyB, const btTransform& xfB)
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{
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int edgeA = 0;
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btScalar separationA = FindMaxSeparation(&edgeA, polyA, xfA, polyB, xfB);
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if (separationA > 0.0f)
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@@ -317,10 +310,10 @@ void b2CollidePolygons(btManifoldResult* manifold,
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if (separationB > 0.0f)
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return;
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const btBox2dShape* poly1; // reference poly
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const btBox2dShape* poly2; // incident poly
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const btBox2dShape* poly1; // reference poly
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const btBox2dShape* poly2; // incident poly
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btTransform xf1, xf2;
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int edge1; // reference edge
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int edge1; // reference edge
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unsigned char flip;
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const btScalar k_relativeTol = 0.98f;
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const btScalar k_absoluteTol = 0.001f;
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@@ -352,14 +345,13 @@ void b2CollidePolygons(btManifoldResult* manifold,
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const btVector3* vertices1 = poly1->getVertices();
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btVector3 v11 = vertices1[edge1];
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btVector3 v12 = edge1 + 1 < count1 ? vertices1[edge1+1] : vertices1[0];
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btVector3 v12 = edge1 + 1 < count1 ? vertices1[edge1 + 1] : vertices1[0];
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//btVector3 dv = v12 - v11;
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btVector3 sideNormal = b2Mul(xf1.getBasis(), v12 - v11);
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sideNormal.normalize();
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btVector3 frontNormal = btCrossS(sideNormal, 1.0f);
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v11 = b2Mul(xf1, v11);
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v12 = b2Mul(xf1, v12);
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@@ -369,13 +361,12 @@ void b2CollidePolygons(btManifoldResult* manifold,
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// Clip incident edge against extruded edge1 side edges.
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ClipVertex clipPoints1[2];
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clipPoints1[0].v.setValue(0,0,0);
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clipPoints1[1].v.setValue(0,0,0);
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clipPoints1[0].v.setValue(0, 0, 0);
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clipPoints1[1].v.setValue(0, 0, 0);
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ClipVertex clipPoints2[2];
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clipPoints2[0].v.setValue(0,0,0);
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clipPoints2[1].v.setValue(0,0,0);
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clipPoints2[0].v.setValue(0, 0, 0);
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clipPoints2[1].v.setValue(0, 0, 0);
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int np;
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@@ -386,7 +377,7 @@ void b2CollidePolygons(btManifoldResult* manifold,
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return;
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// Clip to negative box side 1
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np = ClipSegmentToLine(clipPoints2, clipPoints1, sideNormal, sideOffset2);
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np = ClipSegmentToLine(clipPoints2, clipPoints1, sideNormal, sideOffset2);
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if (np < 2)
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{
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@@ -403,19 +394,18 @@ void b2CollidePolygons(btManifoldResult* manifold,
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if (separation <= 0.0f)
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{
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//b2ManifoldPoint* cp = manifold->points + pointCount;
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//btScalar separation = separation;
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//cp->localPoint1 = b2MulT(xfA, clipPoints2[i].v);
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//cp->localPoint2 = b2MulT(xfB, clipPoints2[i].v);
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manifold->addContactPoint(-manifoldNormal,clipPoints2[i].v,separation);
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manifold->addContactPoint(-manifoldNormal, clipPoints2[i].v, separation);
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// cp->id = clipPoints2[i].id;
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// cp->id.features.flip = flip;
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// cp->id = clipPoints2[i].id;
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// cp->id.features.flip = flip;
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++pointCount;
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}
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}
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// manifold->pointCount = pointCount;}
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// manifold->pointCount = pointCount;}
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}
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