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/cvs/libgender/view.C
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Comparing libgender/view.C (file contents):
Revision 1.1 by root, Sun Oct 3 05:10:46 2004 UTC vs.
Revision 1.32 by root, Wed Oct 6 17:55:40 2004 UTC

1#include <cmath> 1#include <cmath>
2
3#include <GL/gl.h>
4#include <GL/glext.h>
2 5
3#include "oct.h" 6#include "oct.h"
4#include "view.h" 7#include "view.h"
5 8
6draw_context::draw_context () 9 static GLenum gl_error;
10view::view ()
11: gamma(1.0)
7{ 12{
8} 13}
9 14
10draw_context::~draw_context () 15view::~view ()
11{ 16{
12} 17}
13 18
14bool draw_context::may_draw (entity_base *e) 19bool view::may_draw (entity_base *e)
15{ 20{
16 if (drawn.find (e) != drawn.end ()) 21 if (drawn.find (e) != drawn.end ())
17 return false; 22 return false;
18 23
19 drawn.insert (e); 24 drawn.insert (e);
20 return true; 25 return true;
21} 26}
22 27
23void view::draw (draw_context &ctx) 28void view::reset_projection ()
24{ 29{
30 renormalize (orig, p);
31
25 glViewport (0, 0, w, h); 32 glViewport (0, 0, w, h);
26 33
27 glMatrixMode (GL_PROJECTION); 34 glMatrixMode (GL_PROJECTION);
28 glLoadIdentity (); 35 glLoadIdentity ();
29 36
37 gl_error = glGetError ();
30 GLdouble aspect = (GLdouble)w/h; 38 GLdouble aspect = (GLdouble)w/h;
31 GLdouble zNear = 0.0001; 39 GLdouble zNear = 0.1;
32 GLdouble zFar = 1000.; 40 GLdouble zFar = 50.;
33 41
42 gl_error = glGetError ();
34 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); 43 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0));
35 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); 44 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar);
36 45
46 gl_error = glGetError ();
47 d = normalize (d);//D
48 u = normalize (u);//D
37 vec3 rz = -d; 49 vec3 rz = -d;
38 vec3 rx = cross (u, rz); 50 vec3 rx = cross (u, rz);
39 vec3 ry = cross (rz, rx); 51 vec3 ry = cross (rz, rx);
52 gl_error = glGetError ();
40 53
41 GLfloat m[4][4]; 54 matrix &m = projection;
42 m[0][0] = rx.x; m[0][1] = rx.y; m[0][2] = rx.z; m[0][3] = 0; 55 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;
43 m[1][0] = ry.x; m[1][1] = ry.y; m[1][2] = ry.z; m[1][3] = 0; 56 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0;
44 m[2][0] = rz.x; m[2][1] = rz.y; m[2][2] = rz.z; m[2][3] = 0; 57 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0;
45 m[3][0] = 0; m[3][1] = 0; m[3][2] = 0; m[3][3] = 1; 58 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
46 glMultMatrixf ((GLfloat *)m); 59 gl_error = glGetError ();
47 60
48 glTranslatef (-p.x, -p.y, -p.z); 61 glMultMatrixf ((GLfloat *)m.data);
49 62
63 gl_error = glGetError ();
64 glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m);
65
66 gl_error = glGetError ();
67 frustum.l = plane ( m(3,0) + m(0,0), m(3,1) + m(0,1), m(3,2) + m(0,2), m(3,3) + m(0,3) );
68 frustum.r = plane ( m(3,0) - m(0,0), m(3,1) - m(0,1), m(3,2) - m(0,2), m(3,3) - m(0,3) );
69 frustum.b = plane ( m(3,0) + m(1,0), m(3,1) + m(1,1), m(3,2) + m(1,2), m(3,3) + m(1,3) );
70 frustum.t = plane ( m(3,0) - m(1,0), m(3,1) - m(1,1), m(3,2) - m(1,2), m(3,3) - m(1,3) );
71 frustum.n = plane ( m(3,0) + m(2,0), m(3,1) + m(2,1), m(3,2) + m(2,2), m(3,3) + m(2,3) );
72 frustum.f = plane ( m(3,0) - m(2,0), m(3,1) - m(2,1), m(3,2) - m(2,2), m(3,3) - m(2,3) );
73
74 gl_error = glGetError ();
50 glMatrixMode (GL_MODELVIEW); 75 glMatrixMode (GL_MODELVIEW);
51 glLoadIdentity (); 76 glLoadIdentity ();
52 77 glTranslatef (-p.x, -p.y, -p.z);
53 world.draw (ctx); 78 gl_error = glGetError ();
54} 79}
55 80
81void view::begin ()
82{
83 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
84 glDepthRange (0, 1. - (1. / pow (2., 16.)));
85
86 vismap.clear ();
87 vislist.clear ();
88
89 generation++;
90
91 reset_projection ();
92
93 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
94 ;
95 farlist.clear ();
96
97 // check occlusion queries here
98#if 0
99 for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i)
100 //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query));
101 occ_query_result ((*i)->occ_query);
102
103 checklist.clear ();
104#endif
105
106 world.detect_visibility (*this);
107}
108
109void view::end ()
110{
111 vismap.clear ();
112}
113
114void view::pass (enum mode m)
115{
116 mode = m;
117
118 glDisable (GL_ALPHA_TEST);
119 glDisable (GL_BLEND);
120
121 if (mode == view::DEPTH)
122 {
123 glEnable (GL_POLYGON_OFFSET_FILL);
124 glPolygonOffset (0, 1);
125 glDepthFunc (GL_LESS);
126 glDisable (GL_LIGHTING);
127 glColorMask (0, 0, 0, 0);
128 cgGLEnableProfile (vsh_profile);// z-fighting??
129 cgGLDisableProfile (fsh_profile);
130 }
131 else
132 {
133 glEnable (GL_MINMAX);
134 glDisable (GL_POLYGON_OFFSET_FILL);
135 glDepthFunc (GL_LESS);
136 glDepthMask (0);
137 cgGLEnableProfile (vsh_profile);
138 cgGLEnableProfile (fsh_profile);
139 }
140
141 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
142 (*i)->display (*this);
143
144 drawn.clear ();
145
146 if (mode == view::LIGHTED)
147 {
148 glEnable (GL_DEPTH_CLAMP_NV);
149 glDepthFunc (GL_LESS);
150 glEnable (GL_COLOR_MATERIAL);
151 glDisable (GL_LIGHTING);
152#if 1
153 cgGLDisableProfile (vsh_profile);
154 cgGLDisableProfile (fsh_profile);
155#endif
156 glShadeModel (GL_FLAT);
157
158 static int count; count++;
159 if (farlist.size ())
160 printf ("%d: size %d\n", count, farlist.size ());
161
162 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
163 {
164 glColor3f (1 / (GLfloat)(i - farlist.begin()), 1, 1 / (GLfloat)(i - farlist.begin()));
165 (*i)->draw_bbox (*this);
166 }
167
168 glEnable (GL_DEPTH_TEST);
169 glDisable (GL_DEPTH_CLAMP_NV);
170 glShadeModel (GL_SMOOTH);
171 }
172
173 glColorMask (1, 1, 1, 0);
174 glDepthMask (1);
175
176}
177
178

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