x
Yes
No
Do you want to visit DriveHQ English website?
Inicio
Características
Precios
Prueba gratuita
Software cliente
Acerca de nosotros
Servidor de archivos
|
Solución de copias de seguridad
|
Servidor FTP
|
Servidor de correo electrónico
|
Alojamiento web
|
Software cliente
Servidor de archivos
Solución de copia de seguridad
Servidor FTP
Servidor de correo electrónico
Alojamiento web
Software cliente
btSolve2LinearConstraint.cpp - Hosted on DriveHQ Cloud IT Platform
Arriba
Subir
Descargar
Compartir
Publicar
Nueva carpeta
Nuevo archivo
Copiar
Cortar
Eliminar
Pegar
Clasificación
Actualizar
Ruta de la carpeta: \\game3dprogramming\materials\DarkPuzzle\libs\bullet_sdk\src\BulletDynamics\ConstraintSolver\btSolve2LinearConstraint.cpp
Girar
Efecto
Propiedad
Historial
/* 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 "btSolve2LinearConstraint.h" #include "BulletDynamics/Dynamics/btRigidBody.h" #include "LinearMath/btVector3.h" #include "btJacobianEntry.h" void btSolve2LinearConstraint::resolveUnilateralPairConstraint( btRigidBody* body1, btRigidBody* body2, const btMatrix3x3& world2A, const btMatrix3x3& world2B, const btVector3& invInertiaADiag, const btScalar invMassA, const btVector3& linvelA,const btVector3& angvelA, const btVector3& rel_posA1, const btVector3& invInertiaBDiag, const btScalar invMassB, const btVector3& linvelB,const btVector3& angvelB, const btVector3& rel_posA2, btScalar depthA, const btVector3& normalA, const btVector3& rel_posB1,const btVector3& rel_posB2, btScalar depthB, const btVector3& normalB, btScalar& imp0,btScalar& imp1) { (void)linvelA; (void)linvelB; (void)angvelB; (void)angvelA; imp0 = btScalar(0.); imp1 = btScalar(0.); btScalar len = btFabs(normalA.length()) - btScalar(1.); if (btFabs(len) >= SIMD_EPSILON) return; btAssert(len < SIMD_EPSILON); //this jacobian entry could be re-used for all iterations btJacobianEntry jacA(world2A,world2B,rel_posA1,rel_posA2,normalA,invInertiaADiag,invMassA, invInertiaBDiag,invMassB); btJacobianEntry jacB(world2A,world2B,rel_posB1,rel_posB2,normalB,invInertiaADiag,invMassA, invInertiaBDiag,invMassB); //const btScalar vel0 = jacA.getRelativeVelocity(linvelA,angvelA,linvelB,angvelB); //const btScalar vel1 = jacB.getRelativeVelocity(linvelA,angvelA,linvelB,angvelB); const btScalar vel0 = normalA.dot(body1->getVelocityInLocalPoint(rel_posA1)-body2->getVelocityInLocalPoint(rel_posA1)); const btScalar vel1 = normalB.dot(body1->getVelocityInLocalPoint(rel_posB1)-body2->getVelocityInLocalPoint(rel_posB1)); // btScalar penetrationImpulse = (depth*contactTau*timeCorrection) * massTerm;//jacDiagABInv btScalar massTerm = btScalar(1.) / (invMassA + invMassB); // calculate rhs (or error) terms const btScalar dv0 = depthA * m_tau * massTerm - vel0 * m_damping; const btScalar dv1 = depthB * m_tau * massTerm - vel1 * m_damping; // dC/dv * dv = -C // jacobian * impulse = -error // //impulse = jacobianInverse * -error // inverting 2x2 symmetric system (offdiagonal are equal!) // btScalar nonDiag = jacA.getNonDiagonal(jacB,invMassA,invMassB); btScalar invDet = btScalar(1.0) / (jacA.getDiagonal() * jacB.getDiagonal() - nonDiag * nonDiag ); //imp0 = dv0 * jacA.getDiagonal() * invDet + dv1 * -nonDiag * invDet; //imp1 = dv1 * jacB.getDiagonal() * invDet + dv0 * - nonDiag * invDet; imp0 = dv0 * jacA.getDiagonal() * invDet + dv1 * -nonDiag * invDet; imp1 = dv1 * jacB.getDiagonal() * invDet + dv0 * - nonDiag * invDet; //[a b] [d -c] //[c d] inverse = (1 / determinant) * [-b a] where determinant is (ad - bc) //[jA nD] * [imp0] = [dv0] //[nD jB] [imp1] [dv1] } void btSolve2LinearConstraint::resolveBilateralPairConstraint( btRigidBody* body1, btRigidBody* body2, const btMatrix3x3& world2A, const btMatrix3x3& world2B, const btVector3& invInertiaADiag, const btScalar invMassA, const btVector3& linvelA,const btVector3& angvelA, const btVector3& rel_posA1, const btVector3& invInertiaBDiag, const btScalar invMassB, const btVector3& linvelB,const btVector3& angvelB, const btVector3& rel_posA2, btScalar depthA, const btVector3& normalA, const btVector3& rel_posB1,const btVector3& rel_posB2, btScalar depthB, const btVector3& normalB, btScalar& imp0,btScalar& imp1) { (void)linvelA; (void)linvelB; (void)angvelA; (void)angvelB; imp0 = btScalar(0.); imp1 = btScalar(0.); btScalar len = btFabs(normalA.length()) - btScalar(1.); if (btFabs(len) >= SIMD_EPSILON) return; btAssert(len < SIMD_EPSILON); //this jacobian entry could be re-used for all iterations btJacobianEntry jacA(world2A,world2B,rel_posA1,rel_posA2,normalA,invInertiaADiag,invMassA, invInertiaBDiag,invMassB); btJacobianEntry jacB(world2A,world2B,rel_posB1,rel_posB2,normalB,invInertiaADiag,invMassA, invInertiaBDiag,invMassB); //const btScalar vel0 = jacA.getRelativeVelocity(linvelA,angvelA,linvelB,angvelB); //const btScalar vel1 = jacB.getRelativeVelocity(linvelA,angvelA,linvelB,angvelB); const btScalar vel0 = normalA.dot(body1->getVelocityInLocalPoint(rel_posA1)-body2->getVelocityInLocalPoint(rel_posA1)); const btScalar vel1 = normalB.dot(body1->getVelocityInLocalPoint(rel_posB1)-body2->getVelocityInLocalPoint(rel_posB1)); // calculate rhs (or error) terms const btScalar dv0 = depthA * m_tau - vel0 * m_damping; const btScalar dv1 = depthB * m_tau - vel1 * m_damping; // dC/dv * dv = -C // jacobian * impulse = -error // //impulse = jacobianInverse * -error // inverting 2x2 symmetric system (offdiagonal are equal!) // btScalar nonDiag = jacA.getNonDiagonal(jacB,invMassA,invMassB); btScalar invDet = btScalar(1.0) / (jacA.getDiagonal() * jacB.getDiagonal() - nonDiag * nonDiag ); //imp0 = dv0 * jacA.getDiagonal() * invDet + dv1 * -nonDiag * invDet; //imp1 = dv1 * jacB.getDiagonal() * invDet + dv0 * - nonDiag * invDet; imp0 = dv0 * jacA.getDiagonal() * invDet + dv1 * -nonDiag * invDet; imp1 = dv1 * jacB.getDiagonal() * invDet + dv0 * - nonDiag * invDet; //[a b] [d -c] //[c d] inverse = (1 / determinant) * [-b a] where determinant is (ad - bc) //[jA nD] * [imp0] = [dv0] //[nD jB] [imp1] [dv1] if ( imp0 > btScalar(0.0)) { if ( imp1 > btScalar(0.0) ) { //both positive } else { imp1 = btScalar(0.); // now imp0>0 imp1<0 imp0 = dv0 / jacA.getDiagonal(); if ( imp0 > btScalar(0.0) ) { } else { imp0 = btScalar(0.); } } } else { imp0 = btScalar(0.); imp1 = dv1 / jacB.getDiagonal(); if ( imp1 <= btScalar(0.0) ) { imp1 = btScalar(0.); // now imp0>0 imp1<0 imp0 = dv0 / jacA.getDiagonal(); if ( imp0 > btScalar(0.0) ) { } else { imp0 = btScalar(0.); } } else { } } } /* void btSolve2LinearConstraint::resolveAngularConstraint( const btMatrix3x3& invInertiaAWS, const btScalar invMassA, const btVector3& linvelA,const btVector3& angvelA, const btVector3& rel_posA1, const btMatrix3x3& invInertiaBWS, const btScalar invMassB, const btVector3& linvelB,const btVector3& angvelB, const btVector3& rel_posA2, btScalar depthA, const btVector3& normalA, const btVector3& rel_posB1,const btVector3& rel_posB2, btScalar depthB, const btVector3& normalB, btScalar& imp0,btScalar& imp1) { } */
btSolve2LinearConstraint.cpp
Dirección de la página
Dirección del archivo
Anterior
16/21
Siguiente
Descargar
( 7 KB )
Comments
Total ratings:
0
Average rating:
No clasificado
of 10
Would you like to comment?
Join now
, or
Logon
if you are already a member.