Subversion Repositories gelsvn

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
595 jab 1 
/* ----------------------------------------------------------------------- *
2 
 * This file is part of GEL, http://www.imm.dtu.dk/GEL
3 
 * Copyright (C) the authors and DTU Informatics
4 
 * For license and list of authors, see ../../doc/intro.pdf
5 
 * ----------------------------------------------------------------------- */
6 
 
7 
/**
8 
 * @file Triangle.h
9 
 * @brief Triangle class for use with bbox hierarchies.
10 
 */
11 
 
443 jab 12 
#ifndef __GEOMETRY_TRIANGLE_H
13 
#define __GEOMETRY_TRIANGLE_H
290 jrf 14 
 
601 jab 15 
#include "../CGLA/Vec2f.h"
16 
#include "../CGLA/Vec3f.h"
17 
#include "../CGLA/Mat3x3f.h"
290 jrf 18 
 
291 jrf 19 
namespace Geometry
20 
{
21 
 
290 jrf 22 
class Triangle
23 
{
24 
	CGLA::Vec3f vert[3];
25 
	CGLA::Vec3f edge[3];
26 
 
27 
	CGLA::Vec3f vert_norm[3];
28 
	CGLA::Vec3f edge_norm[3];
29 
	CGLA::Vec3f face_norm;
30 
 
31 
	CGLA::Vec3f tri_plane_edge_norm[3];
32 
	float edge_len[3];
33 
 
34 
 public:
35 
 
36 
	Triangle() {}
37 
 
38 
	Triangle(const CGLA::Vec3f& _v0,
39 
					 const CGLA::Vec3f& _v1,
40 
					 const CGLA::Vec3f& _v2,
41 
 
42 
					 const CGLA::Vec3f& _vn0,
43 
					 const CGLA::Vec3f& _vn1,
44 
					 const CGLA::Vec3f& _vn2,
45 
 
46 
					 const CGLA::Vec3f& _en0,
47 
					 const CGLA::Vec3f& _en1,
48 
					 const CGLA::Vec3f& _en2);
49 
 
50 
	bool intersect(const CGLA::Vec3f&, const CGLA::Vec3f&, float&) const;
51 
 
52 
	const CGLA::Vec3f get_pmin() const
53 
	{
54 
		return v_min(vert[0],v_min(vert[1],vert[2]));
55 
	}
56 
 
57 
	const CGLA::Vec3f get_pmax() const
58 
	{
59 
		return v_max(vert[0],v_max(vert[1],vert[2]));
60 
	}
61 
 
62 
	const CGLA::Vec3f centre() const
63 
		{
64 
			return (vert[0]+vert[1]+vert[2])/3.0f;
65 
		}
66 
 
67 
	const float area() const
68 
		{
69 
			return 0.5 * (cross(edge[0],-edge[2])).length();
70 
		}
71 
 
72 
	const CGLA::Vec3f get_centre() const
73 
	{
74 
		CGLA::Vec3f pmin = get_pmin();
75 
		CGLA::Vec3f pmax = get_pmax();
76 
		return (pmax-pmin)/2.0f+pmin;
77 
	}
78 
 
79 
	bool signed_distance(const CGLA::Vec3f& p, float& sq_dist, float& sgn) const;
80 
 
81 
	CGLA::Vec3f get_v0() const {return vert[0];}
82 
	CGLA::Vec3f get_v1() const {return vert[1];}
83 
	CGLA::Vec3f get_v2() const {return vert[2];}
84 
 
85 
	const CGLA::Vec3f& get_edge(int i) const {return edge[i];}
309 jab 86 
 
87 
	const CGLA::Vec3f& get_face_norm() const {return face_norm;}
290 jrf 88 
 
89 
};
90 
 
291 jrf 91 
}
290 jrf 92 
#endif