b2CircleContact.cpp
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00001 /*
00002 * Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
00003 *
00004 * This software is provided 'as-is', without any express or implied
00005 * warranty.  In no event will the authors be held liable for any damages
00006 * arising from the use of this software.
00007 * Permission is granted to anyone to use this software for any purpose,
00008 * including commercial applications, and to alter it and redistribute it
00009 * freely, subject to the following restrictions:
00010 * 1. The origin of this software must not be misrepresented; you must not
00011 * claim that you wrote the original software. If you use this software
00012 * in a product, an acknowledgment in the product documentation would be
00013 * appreciated but is not required.
00014 * 2. Altered source versions must be plainly marked as such, and must not be
00015 * misrepresented as being the original software.
00016 * 3. This notice may not be removed or altered from any source distribution.
00017 */
00018 
00019 #include <Box2D/Dynamics/Contacts/b2CircleContact.h>
00020 #include <Box2D/Dynamics/b2Body.h>
00021 #include <Box2D/Dynamics/b2Fixture.h>
00022 #include <Box2D/Dynamics/b2WorldCallbacks.h>
00023 #include <Box2D/Common/b2BlockAllocator.h>
00024 #include <Box2D/Collision/b2TimeOfImpact.h>
00025 
00026 #include <new>
00027 
00028 b2Contact* b2CircleContact::Create(b2Fixture* fixtureA, int32, b2Fixture* fixtureB, int32, b2BlockAllocator* allocator)
00029 {
00030         void* mem = allocator->Allocate(sizeof(b2CircleContact));
00031         return new (mem) b2CircleContact(fixtureA, fixtureB);
00032 }
00033 
00034 void b2CircleContact::Destroy(b2Contact* contact, b2BlockAllocator* allocator)
00035 {
00036         ((b2CircleContact*)contact)->~b2CircleContact();
00037         allocator->Free(contact, sizeof(b2CircleContact));
00038 }
00039 
00040 b2CircleContact::b2CircleContact(b2Fixture* fixtureA, b2Fixture* fixtureB)
00041         : b2Contact(fixtureA, 0, fixtureB, 0)
00042 {
00043         b2Assert(m_fixtureA->GetType() == b2Shape::e_circle);
00044         b2Assert(m_fixtureB->GetType() == b2Shape::e_circle);
00045 }
00046 
00047 void b2CircleContact::Evaluate(b2Manifold* manifold, const b2Transform& xfA, const b2Transform& xfB)
00048 {
00049         b2CollideCircles(manifold,
00050                                         (b2CircleShape*)m_fixtureA->GetShape(), xfA,
00051                                         (b2CircleShape*)m_fixtureB->GetShape(), xfB);
00052 }


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autogenerated on Thu Sep 7 2017 09:27:47