0023022: This is desirable to access OpenGl extensions and core API (1.2+) in one...
[occt.git] / src / OpenGl / OpenGl_telem_util.hxx
CommitLineData
7fd59977 1/***********************************************************************
2
3FONCTION :
4----------
5File Include OpenGl_telem_util :
6
7
8REMARQUES:
9----------
10
11
12HISTORIQUE DES MODIFICATIONS :
13--------------------------------
14xx-xx-xx : xxx ; Creation.
1522-04-96 : FMN ; Ajout TelReadImage TelDrawImage
1623-12-96 : CAL ; Probleme dans la macro vecmag
1712-02-97 : FMN ; Suppression TelEnquireFacilities()
1807-10-97 : FMN ; Simplification WNT
1923-12-97 : FMN ; Suppression TelBackInteriorStyle, TelBackInteriorStyleIndex
20
21************************************************************************/
22
23#ifndef OPENGL_TELEM_UTIL_H
24#define OPENGL_TELEM_UTIL_H
25
2166f0fa 26#include <InterfaceGraphic_telem.hxx>
5f8b738e 27#include <cmath>
7fd59977 28
29/*
30* ShortRealLast () = 3.40282346638528860e+38
31* ShortRealFirst () = 3.40282346638528860e+38
32*/
33#define shortreallast() (3.e+38)
34#define shortrealfirst() (-3.e+38)
35
36/* vector manipulation macros */
37#define square(a) ((a)*(a))
38
39/* add */
40#define vecadd(a,b,c) { (a)[0]=(b)[0]+(c)[0]; \
41 (a)[1]=(b)[1]+(c)[1]; \
42 (a)[2]=(b)[2]+(c)[2]; }
43
44/* subtract */
45#define vecsub(a,b,c) { (a)[0]=(b)[0]-(c)[0]; \
46 (a)[1]=(b)[1]-(c)[1]; \
47 (a)[2]=(b)[2]-(c)[2]; }
48
49/* dot product */
50#define vecdot(a,b) ((a)[0]*(b)[0]+(a)[1]*(b)[1]+(a)[2]*(b)[2])
51
52/* cross product */
53#define veccrs(a,b,c) { Tfloat x, y, z; \
54 x = (b)[1]*(c)[2] - (b)[2]*(c)[1]; \
55 y = (b)[2]*(c)[0] - (b)[0]*(c)[2]; \
56 z = (b)[0]*(c)[1] - (b)[1]*(c)[0]; \
57 (a)[0] = x; \
58 (a)[1] = y; \
59 (a)[2] = z; }
60/* scale */
61#define vecscl(a,b) { (b)[0] *= (a); (b)[1] *= (a); (b)[2] *= (a); }
62
63/* magnitude square */
64#define vecmg2(a) (square((a)[0])+square((a)[1])+square((a)[2]))
65
66/* magnitude */
5f8b738e 67#define vecmag(a) (std::sqrt((double)vecmg2(a)))
7fd59977 68
69/* normalize */
7fd59977 70#define vecnrmd(a,d) ( d = (Tfloat)vecmag(a), \
71 ( d > 1e-10 ? (a[0] /= d, a[1] /= d, a[2] /= d, d) : (Tfloat)0. ) )
72#define vecnrm(a) { Tfloat d; vecnrmd(a,d); }
7fd59977 73
74/* angle between two vectors */
75#define vecang(a,b,d) { d = (Tfloat)(vecmag(a)*vecmag(b)); \
76 d = vecdot(a,b)/d; \
77 d = d < -1.0F ? -1.0F : d > 1.0F ? 1.0F : d; \
78 d = ( Tfloat )acos(d); }
79
80/* point along a vector at a distance */
81#define vecgnd(a,b,c,d) { Tfloat w; w = d/vecmag(c); \
82 (a)[0] = (b)[0]+(c)[0]*w; \
83 (a)[1] = (b)[1]+(c)[1]*w; \
84 (a)[2] = (b)[2]+(c)[2]*w; }
85/* copy */
86#define veccpy(a,b) ((a)[0]=(b)[0],(a)[1]=(b)[1],(a)[2]=(b)[2])
87
88/* end vector macros */
89
90typedef struct
91{
92 Tmatrix3 mat;
93}
94Tmatrix3Struct;
95
96#define matcpy(d,s) { *((Tmatrix3Struct*)(d)) = *((Tmatrix3Struct*)(s)); }
97/*
98(d)[0][0]=(s)[0][0],(d)[0][1]=(s)[0][1],(d)[0][2]=(s)[0][2],(d)[0][3]=(s)[0][3],
99(d)[1][0]=(s)[1][0],(d)[1][1]=(s)[1][1],(d)[1][2]=(s)[1][2],(d)[1][3]=(s)[1][3],
100(d)[2][0]=(s)[2][0],(d)[2][1]=(s)[2][1],(d)[2][2]=(s)[2][2],(d)[2][3]=(s)[2][3],
101(d)[3][0]=(s)[3][0],(d)[3][1]=(s)[3][1],(d)[3][2]=(s)[3][2],(d)[3][3]=(s)[3][3]
102*/
103
104#define matdump(m) { \
105 int i, j; \
106 for (i=0; i<4; i++) {\
107 printf ("\t"); \
108 for (j=0; j<4; j++) \
109 printf ("%f ", m[i][j]); \
110 printf ("\n"); \
111 } \
112}
113
7fd59977 114extern int TelGetPolygonNormal( tel_point, Tint*, Tint, Tfloat* );
115extern int TelGetNormal( Tfloat*, Tfloat*, Tfloat*, Tfloat* );
7fd59977 116extern void TelMultiplymat3( Tmatrix3, Tmatrix3, Tmatrix3 );
7fd59977 117
118#endif