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Diffstat (limited to 'thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btSubSimplexConvexCast.cpp')
| -rw-r--r-- | thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btSubSimplexConvexCast.cpp | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btSubSimplexConvexCast.cpp b/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btSubSimplexConvexCast.cpp deleted file mode 100644 index ec638f60ba..0000000000 --- a/thirdparty/bullet/src/BulletCollision/NarrowPhaseCollision/btSubSimplexConvexCast.cpp +++ /dev/null @@ -1,160 +0,0 @@ -/* -Bullet Continuous Collision Detection and Physics Library -Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ - -This software is provided 'as-is', without any express or implied warranty. -In no event will the authors be held liable for any damages arising from the use of this software. -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it freely, -subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. -2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. -3. This notice may not be removed or altered from any source distribution. -*/ - - -#include "btSubSimplexConvexCast.h" -#include "BulletCollision/CollisionShapes/btConvexShape.h" - -#include "BulletCollision/CollisionShapes/btMinkowskiSumShape.h" -#include "BulletCollision/NarrowPhaseCollision/btSimplexSolverInterface.h" -#include "btPointCollector.h" -#include "LinearMath/btTransformUtil.h" - -btSubsimplexConvexCast::btSubsimplexConvexCast (const btConvexShape* convexA,const btConvexShape* convexB,btSimplexSolverInterface* simplexSolver) -:m_simplexSolver(simplexSolver), -m_convexA(convexA),m_convexB(convexB) -{ -} - -///Typically the conservative advancement reaches solution in a few iterations, clip it to 32 for degenerate cases. -///See discussion about this here http://continuousphysics.com/Bullet/phpBB2/viewtopic.php?t=565 -#ifdef BT_USE_DOUBLE_PRECISION -#define MAX_ITERATIONS 64 -#else -#define MAX_ITERATIONS 32 -#endif -bool btSubsimplexConvexCast::calcTimeOfImpact( - const btTransform& fromA, - const btTransform& toA, - const btTransform& fromB, - const btTransform& toB, - CastResult& result) -{ - - m_simplexSolver->reset(); - - btVector3 linVelA,linVelB; - linVelA = toA.getOrigin()-fromA.getOrigin(); - linVelB = toB.getOrigin()-fromB.getOrigin(); - - btScalar lambda = btScalar(0.); - - btTransform interpolatedTransA = fromA; - btTransform interpolatedTransB = fromB; - - ///take relative motion - btVector3 r = (linVelA-linVelB); - btVector3 v; - - btVector3 supVertexA = fromA(m_convexA->localGetSupportingVertex(-r*fromA.getBasis())); - btVector3 supVertexB = fromB(m_convexB->localGetSupportingVertex(r*fromB.getBasis())); - v = supVertexA-supVertexB; - int maxIter = MAX_ITERATIONS; - - btVector3 n; - n.setValue(btScalar(0.),btScalar(0.),btScalar(0.)); - - btVector3 c; - - - - - btScalar dist2 = v.length2(); -#ifdef BT_USE_DOUBLE_PRECISION - btScalar epsilon = btScalar(0.0001); -#else - btScalar epsilon = btScalar(0.0001); -#endif //BT_USE_DOUBLE_PRECISION - btVector3 w,p; - btScalar VdotR; - - while ( (dist2 > epsilon) && maxIter--) - { - supVertexA = interpolatedTransA(m_convexA->localGetSupportingVertex(-v*interpolatedTransA.getBasis())); - supVertexB = interpolatedTransB(m_convexB->localGetSupportingVertex(v*interpolatedTransB.getBasis())); - w = supVertexA-supVertexB; - - btScalar VdotW = v.dot(w); - - if (lambda > btScalar(1.0)) - { - return false; - } - - if ( VdotW > btScalar(0.)) - { - VdotR = v.dot(r); - - if (VdotR >= -(SIMD_EPSILON*SIMD_EPSILON)) - return false; - else - { - lambda = lambda - VdotW / VdotR; - //interpolate to next lambda - // x = s + lambda * r; - interpolatedTransA.getOrigin().setInterpolate3(fromA.getOrigin(),toA.getOrigin(),lambda); - interpolatedTransB.getOrigin().setInterpolate3(fromB.getOrigin(),toB.getOrigin(),lambda); - //m_simplexSolver->reset(); - //check next line - w = supVertexA-supVertexB; - - n = v; - - } - } - ///Just like regular GJK only add the vertex if it isn't already (close) to current vertex, it would lead to divisions by zero and NaN etc. - if (!m_simplexSolver->inSimplex(w)) - m_simplexSolver->addVertex( w, supVertexA , supVertexB); - - if (m_simplexSolver->closest(v)) - { - dist2 = v.length2(); - - //todo: check this normal for validity - //n=v; - //printf("V=%f , %f, %f\n",v[0],v[1],v[2]); - //printf("DIST2=%f\n",dist2); - //printf("numverts = %i\n",m_simplexSolver->numVertices()); - } else - { - dist2 = btScalar(0.); - } - } - - //int numiter = MAX_ITERATIONS - maxIter; -// printf("number of iterations: %d", numiter); - - //don't report a time of impact when moving 'away' from the hitnormal - - - result.m_fraction = lambda; - if (n.length2() >= (SIMD_EPSILON*SIMD_EPSILON)) - result.m_normal = n.normalized(); - else - result.m_normal = btVector3(btScalar(0.0), btScalar(0.0), btScalar(0.0)); - - //don't report time of impact for motion away from the contact normal (or causes minor penetration) - if (result.m_normal.dot(r)>=-result.m_allowedPenetration) - return false; - - btVector3 hitA,hitB; - m_simplexSolver->compute_points(hitA,hitB); - result.m_hitPoint=hitB; - return true; -} - - - - |