triBoxCheck.h

Public Functions

bool

triBoxOverlap(Box3F box, const Point3F & a, const Point3F & b, const Point3F & c)

bool

triBoxOverlap(const Point3F & boxcenter, const Point3F & boxhalfsize, const Point3F triverts)

Public Functions

triBoxOverlap(Box3F box, const Point3F & a, const Point3F & b, const Point3F & c)

Massage stuff into right format for triBoxOverlap test.

This is really just a helper function - use the other version if you want to be fast!

triBoxOverlap(const Point3F & boxcenter, const Point3F & boxhalfsize, const Point3F triverts)

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24//-----------------------------------------------------------------------------
25// AABB-triangle overlap test code originally by Tomas Akenine-Möller
26//               Assisted by Pierre Terdiman and David Hunt
27// http://www.cs.lth.se/home/Tomas_Akenine_Moller/code/
28// Ported to TSE by BJG, 2005-4-14
29// Modified to avoid a lot of copying by ASM, 2007-9-28
30//-----------------------------------------------------------------------------
31
32#ifndef _TRIBOXCHECK_H_
33#define _TRIBOXCHECK_H_
34
35#include "math/mPoint3.h"
36#include "math/mBox.h"
37
38bool triBoxOverlap(const Point3F &boxcenter, const Point3F &boxhalfsize, const Point3F triverts[3]);
39
40/// Massage stuff into right format for triBoxOverlap test. This is really
41/// just a helper function - use the other version if you want to be fast!
42inline bool triBoxOverlap(Box3F box, const Point3F& a, const Point3F& b, const Point3F& c)
43{
44   Point3F halfSize(box.len_x() / 2.f, box.len_y() / 2.f, box.len_z() / 2.f);
45
46   Point3F center;
47   box.getCenter(&center);
48
49   Point3F verts[3] = {a,b,c};
50
51   return triBoxOverlap(center, halfSize, verts);
52}
53
54#endif
55