Box2D: b2TimeOfImpact.h Source File

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b2TimeOfImpact.h
1 /*
2 * Copyright (c) 2006-2009 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 #ifndef B2_TIME_OF_IMPACT_H
20 #define B2_TIME_OF_IMPACT_H
21
22 #include <Box2D/Common/b2Math.h>
23 #include <Box2D/Collision/b2Distance.h>
24
26 struct b2TOIInput
27 {
28 b2DistanceProxy proxyA;
29 b2DistanceProxy proxyB;
30 b2Sweep sweepA;
31 b2Sweep sweepB;
32 float32 tMax; // defines sweep interval [0, tMax]
33 };
34
35 // Output parameters for b2TimeOfImpact.
36 struct b2TOIOutput
37 {
38 enum State
39 {
40 e_unknown,
41 e_failed,
42 e_overlapped,
43 e_touching,
44 e_separated
45 };
46
47 State state;
48 float32 t;
49 };
50
56 void b2TimeOfImpact(b2TOIOutput* output, const b2TOIInput* input);
57
58 #endif
b2TOIOutput
Definition: b2TimeOfImpact.h:36
b2TOIInput
Input parameters for b2TimeOfImpact.
Definition: b2TimeOfImpact.h:26
b2Sweep
Definition: b2Math.h:380
b2DistanceProxy
Definition: b2Distance.h:29