File indexing completed on 2025-02-16 03:29:35

 /*
 * Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
 *
 * 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 <Box2D/Dynamics/Contacts/b2ChainAndPolygonContact.h>
 #include <Box2D/Common/b2BlockAllocator.h>
 #include <Box2D/Dynamics/b2Fixture.h>
 #include <Box2D/Collision/Shapes/b2ChainShape.h>
 #include <Box2D/Collision/Shapes/b2EdgeShape.h>
 
 #include <new>
 
 b2Contact* b2ChainAndPolygonContact::Create(b2Fixture* fixtureA, int32 indexA, b2Fixture* fixtureB, int32 indexB, b2BlockAllocator* allocator)
 {
     void* mem = allocator->Allocate(sizeof(b2ChainAndPolygonContact));
     return new (mem) b2ChainAndPolygonContact(fixtureA, indexA, fixtureB, indexB);
 }
 
 void b2ChainAndPolygonContact::Destroy(b2Contact* contact, b2BlockAllocator* allocator)
 {
     ((b2ChainAndPolygonContact*)contact)->~b2ChainAndPolygonContact();
     allocator->Free(contact, sizeof(b2ChainAndPolygonContact));
 }
 
 b2ChainAndPolygonContact::b2ChainAndPolygonContact(b2Fixture* fixtureA, int32 indexA, b2Fixture* fixtureB, int32 indexB)
 : b2Contact(fixtureA, indexA, fixtureB, indexB)
 {
     b2Assert(m_fixtureA->GetType() == b2Shape::e_chain);
     b2Assert(m_fixtureB->GetType() == b2Shape::e_polygon);
 }
 
 void b2ChainAndPolygonContact::Evaluate(b2Manifold* manifold, const b2Transform& xfA, const b2Transform& xfB)
 {
     b2ChainShape* chain = (b2ChainShape*)m_fixtureA->GetShape();
     b2EdgeShape edge;
     chain->GetChildEdge(&edge, m_indexA);
     b2CollideEdgeAndPolygon(    manifold, &edge, xfA,
                                 (b2PolygonShape*)m_fixtureB->GetShape(), xfB);
 }