1 /*
2 * Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 * Permission is granted to anyone to use this software for any purpose,
8 * including commercial applications, and to alter it and redistribute it
9 * freely, subject to the following restrictions:
10 * 1. The origin of this software must not be misrepresented; you must not
11 * claim that you wrote the original software. If you use this software
12 * in a product, an acknowledgment in the product documentation would be
13 * appreciated but is not required.
14 * 2. Altered source versions must be plainly marked as such, and must not be
15 * misrepresented as being the original software.
16 * 3. This notice may not be removed or altered from any source distribution.
17 */
18
19 #include "b2EdgeAndCircleContact.h"
20 #include "../../Common/b2BlockAllocator.h"
21 #include "../b2Fixture.h"
22
23 #include <new>
24 using namespace std;
25
Create(b2Fixture * fixtureA,int32,b2Fixture * fixtureB,int32,b2BlockAllocator * allocator)26 b2Contact* b2EdgeAndCircleContact::Create(b2Fixture* fixtureA, int32, b2Fixture* fixtureB, int32, b2BlockAllocator* allocator)
27 {
28 void* mem = allocator->Allocate(sizeof(b2EdgeAndCircleContact));
29 return new (mem) b2EdgeAndCircleContact(fixtureA, fixtureB);
30 }
31
Destroy(b2Contact * contact,b2BlockAllocator * allocator)32 void b2EdgeAndCircleContact::Destroy(b2Contact* contact, b2BlockAllocator* allocator)
33 {
34 ((b2EdgeAndCircleContact*)contact)->~b2EdgeAndCircleContact();
35 allocator->Free(contact, sizeof(b2EdgeAndCircleContact));
36 }
37
b2EdgeAndCircleContact(b2Fixture * fixtureA,b2Fixture * fixtureB)38 b2EdgeAndCircleContact::b2EdgeAndCircleContact(b2Fixture* fixtureA, b2Fixture* fixtureB)
39 : b2Contact(fixtureA, 0, fixtureB, 0)
40 {
41 b2Assert(m_fixtureA->GetType() == b2Shape::e_edge);
42 b2Assert(m_fixtureB->GetType() == b2Shape::e_circle);
43 }
44
Evaluate(b2Manifold * manifold,const b2Transform & xfA,const b2Transform & xfB)45 void b2EdgeAndCircleContact::Evaluate(b2Manifold* manifold, const b2Transform& xfA, const b2Transform& xfB)
46 {
47 b2CollideEdgeAndCircle( manifold,
48 (b2EdgeShape*)m_fixtureA->GetShape(), xfA,
49 (b2CircleShape*)m_fixtureB->GetShape(), xfB);
50 }
51