1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
| x=e->x();
y=e->y();
GLuint selectBuffer[BUFSIZE];
GLint hits;
GLint viewport[4];
//************ PICKING
glGetIntegerv(GL_VIEWPORT,viewport);
glSelectBuffer(BUFSIZE,selectBuffer);
(void) glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
//récupération de la matrice de projection active
GLfloat v_Matrix_Projection[16];
glGetFloatv(GL_PROJECTION_MATRIX,v_Matrix_Projection);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
// crée une région de 5x5 pixels proche de l'emplacement du curseur
gluPickMatrix((GLfloat) x, (GLfloat)(viewport[3]-y),20.f,20.f,viewport);
glMultMatrixf(v_Matrix_Projection);
Draw_for_select();
// ground->Affiche_Select();
glFlush();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
hits=glRenderMode(GL_RENDER);
processHits(hits,selectBuffer);
//Fin du Picking, _picking contien l'indice de l'element selectionné
void Camera_Persp::SetProjection(int w,int h)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0,(GLfloat)w/(GLfloat)h,0.01,1000.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
} |
