WebSVN – gelsvn – Diff – /trunk/src/Geometry/Triangle.h


/* ----------------------------------------------------------------------- *
 * This file is part of GEL, http://www.imm.dtu.dk/GEL
 * Copyright (C) the authors and DTU Informatics
 * For license and list of authors, see ../../doc/intro.pdf
 * ----------------------------------------------------------------------- */
 
/**
 * @file Triangle.h
 * @brief Triangle class for use with bbox hierarchies.
 */
 
#ifndef __GEOMETRY_TRIANGLE_H
#define __GEOMETRY_TRIANGLE_H
 
#include "../CGLA/Vec2f.h"
#include "../CGLA/Vec3f.h"
#include "../CGLA/Mat3x3f.h"
 
namespace Geometry
{
 
class Triangle
{
	CGLA::Vec3f vert[3];
	CGLA::Vec3f edge[3];
 
	CGLA::Vec3f vert_norm[3];
	CGLA::Vec3f edge_norm[3];
	CGLA::Vec3f face_norm;
 
	CGLA::Vec3f tri_plane_edge_norm[3];
	float edge_len[3];
	
 public:
 
	Triangle() {}
	
	Triangle(const CGLA::Vec3f& _v0, 
					 const CGLA::Vec3f& _v1, 
					 const CGLA::Vec3f& _v2,
 
					 const CGLA::Vec3f& _vn0,
					 const CGLA::Vec3f& _vn1,
					 const CGLA::Vec3f& _vn2,
 
					 const CGLA::Vec3f& _en0,
					 const CGLA::Vec3f& _en1,
					 const CGLA::Vec3f& _en2);
 
	bool intersect(const CGLA::Vec3f&, const CGLA::Vec3f&, float&) const;
 
	const CGLA::Vec3f get_pmin() const 
	{
		return v_min(vert[0],v_min(vert[1],vert[2]));
	}
 
	const CGLA::Vec3f get_pmax() const 
	{
		return v_max(vert[0],v_max(vert[1],vert[2]));
	}
 
	const CGLA::Vec3f centre() const
		{
			return (vert[0]+vert[1]+vert[2])/3.0f;
		}
 
	const float area() const 
		{
			return 0.5 * (cross(edge[0],-edge[2])).length();
		}
 
	const CGLA::Vec3f get_centre() const 
	{
		CGLA::Vec3f pmin = get_pmin();
		CGLA::Vec3f pmax = get_pmax();
		return (pmax-pmin)/2.0f+pmin;
	}
 
	bool signed_distance(const CGLA::Vec3f& p, float& sq_dist, float& sgn) const;
 
	CGLA::Vec3f get_v0() const {return vert[0];}
	CGLA::Vec3f get_v1() const {return vert[1];}
	CGLA::Vec3f get_v2() const {return vert[2];}
 
	const CGLA::Vec3f& get_edge(int i) const {return edge[i];}
 
	const CGLA::Vec3f& get_face_norm() const {return face_norm;}
	
};	
 
}
#endif
 

Rev 595	Rev 601
1	`/* ----------------------------------------------------------------------- *`	1	`/* ----------------------------------------------------------------------- *`
2	`* This file is part of GEL, http://www.imm.dtu.dk/GEL`	2	`* This file is part of GEL, http://www.imm.dtu.dk/GEL`
3	`* Copyright (C) the authors and DTU Informatics`	3	`* Copyright (C) the authors and DTU Informatics`
4	`* For license and list of authors, see ../../doc/intro.pdf`	4	`* For license and list of authors, see ../../doc/intro.pdf`
5	`* ----------------------------------------------------------------------- */`	5	`* ----------------------------------------------------------------------- */`
6		6
7	`/**`	7	`/**`
8	`* @file Triangle.h`	8	`* @file Triangle.h`
9	`* @brief Triangle class for use with bbox hierarchies.`	9	`* @brief Triangle class for use with bbox hierarchies.`
10	`*/`	10	`*/`
11		11
12	`#ifndef __GEOMETRY_TRIANGLE_H`	12	`#ifndef __GEOMETRY_TRIANGLE_H`
13	`#define __GEOMETRY_TRIANGLE_H`	13	`#define __GEOMETRY_TRIANGLE_H`
14		14
15	`#include "CGLA/Vec2f.h"`	15	`#include "../CGLA/Vec2f.h"`
16	`#include "CGLA/Vec3f.h"`	16	`#include "../CGLA/Vec3f.h"`
17	`#include "CGLA/Mat3x3f.h"`	17	`#include "../CGLA/Mat3x3f.h"`
18		18
19	`namespace Geometry`	19	`namespace Geometry`
20	`{`	20	`{`
21		21
22	`class Triangle`	22	`class Triangle`
23	`{`	23	`{`
24	`CGLA::Vec3f vert[3];`	24	`CGLA::Vec3f vert[3];`
25	`CGLA::Vec3f edge[3];`	25	`CGLA::Vec3f edge[3];`
26		26
27	`CGLA::Vec3f vert_norm[3];`	27	`CGLA::Vec3f vert_norm[3];`
28	`CGLA::Vec3f edge_norm[3];`	28	`CGLA::Vec3f edge_norm[3];`
29	`CGLA::Vec3f face_norm;`	29	`CGLA::Vec3f face_norm;`
30		30
31	`CGLA::Vec3f tri_plane_edge_norm[3];`	31	`CGLA::Vec3f tri_plane_edge_norm[3];`
32	`float edge_len[3];`	32	`float edge_len[3];`
33		33
34	`public:`	34	`public:`
35		35
36	`Triangle() {}`	36	`Triangle() {}`
37		37
38	`Triangle(const CGLA::Vec3f& _v0,`	38	`Triangle(const CGLA::Vec3f& _v0,`
39	`const CGLA::Vec3f& _v1,`	39	`const CGLA::Vec3f& _v1,`
40	`const CGLA::Vec3f& _v2,`	40	`const CGLA::Vec3f& _v2,`
41		41
42	`const CGLA::Vec3f& _vn0,`	42	`const CGLA::Vec3f& _vn0,`
43	`const CGLA::Vec3f& _vn1,`	43	`const CGLA::Vec3f& _vn1,`
44	`const CGLA::Vec3f& _vn2,`	44	`const CGLA::Vec3f& _vn2,`
45		45
46	`const CGLA::Vec3f& _en0,`	46	`const CGLA::Vec3f& _en0,`
47	`const CGLA::Vec3f& _en1,`	47	`const CGLA::Vec3f& _en1,`
48	`const CGLA::Vec3f& _en2);`	48	`const CGLA::Vec3f& _en2);`
49		49
50	`bool intersect(const CGLA::Vec3f&, const CGLA::Vec3f&, float&) const;`	50	`bool intersect(const CGLA::Vec3f&, const CGLA::Vec3f&, float&) const;`
51		51
52	`const CGLA::Vec3f get_pmin() const`	52	`const CGLA::Vec3f get_pmin() const`
53	`{`	53	`{`
54	`return v_min(vert[0],v_min(vert[1],vert[2]));`	54	`return v_min(vert[0],v_min(vert[1],vert[2]));`
55	`}`	55	`}`
56		56
57	`const CGLA::Vec3f get_pmax() const`	57	`const CGLA::Vec3f get_pmax() const`
58	`{`	58	`{`
59	`return v_max(vert[0],v_max(vert[1],vert[2]));`	59	`return v_max(vert[0],v_max(vert[1],vert[2]));`
60	`}`	60	`}`
61		61
62	`const CGLA::Vec3f centre() const`	62	`const CGLA::Vec3f centre() const`
63	`{`	63	`{`
64	`return (vert[0]+vert[1]+vert[2])/3.0f;`	64	`return (vert[0]+vert[1]+vert[2])/3.0f;`
65	`}`	65	`}`
66		66
67	`const float area() const`	67	`const float area() const`
68	`{`	68	`{`
69	`return 0.5 * (cross(edge[0],-edge[2])).length();`	69	`return 0.5 * (cross(edge[0],-edge[2])).length();`
70	`}`	70	`}`
71		71
72	`const CGLA::Vec3f get_centre() const`	72	`const CGLA::Vec3f get_centre() const`
73	`{`	73	`{`
74	`CGLA::Vec3f pmin = get_pmin();`	74	`CGLA::Vec3f pmin = get_pmin();`
75	`CGLA::Vec3f pmax = get_pmax();`	75	`CGLA::Vec3f pmax = get_pmax();`
76	`return (pmax-pmin)/2.0f+pmin;`	76	`return (pmax-pmin)/2.0f+pmin;`
77	`}`	77	`}`
78		78
79	`bool signed_distance(const CGLA::Vec3f& p, float& sq_dist, float& sgn) const;`	79	`bool signed_distance(const CGLA::Vec3f& p, float& sq_dist, float& sgn) const;`
80		80
81	`CGLA::Vec3f get_v0() const {return vert[0];}`	81	`CGLA::Vec3f get_v0() const {return vert[0];}`
82	`CGLA::Vec3f get_v1() const {return vert[1];}`	82	`CGLA::Vec3f get_v1() const {return vert[1];}`
83	`CGLA::Vec3f get_v2() const {return vert[2];}`	83	`CGLA::Vec3f get_v2() const {return vert[2];}`
84		84
85	`const CGLA::Vec3f& get_edge(int i) const {return edge[i];}`	85	`const CGLA::Vec3f& get_edge(int i) const {return edge[i];}`
86		86
87	`const CGLA::Vec3f& get_face_norm() const {return face_norm;}`	87	`const CGLA::Vec3f& get_face_norm() const {return face_norm;}`
88		88
89	`};`	89	`};`
90		90
91	`}`	91	`}`
92	`#endif`	92	`#endif`
93		93

Subversion Repositories gelsvn

(root)/trunk/src/Geometry/Triangle.h – Rev 595 → 601