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/cvs/libgender/view.C
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Comparing libgender/view.C (file contents):
Revision 1.4 by root, Mon Oct 4 07:04:58 2004 UTC vs.
Revision 1.22 by root, Wed Oct 6 04:49:13 2004 UTC

1#include <cmath> 1#include <cmath>
2 2
3#include "oct.h" 3#include "oct.h"
4#include "view.h" 4#include "view.h"
5 5
6draw_context::draw_context (view &v) 6view::view ()
7: v(v), l(0), mode(LIGHTED) 7: gamma(1.0)
8{ 8{
9} 9}
10 10
11draw_context::~draw_context () 11view::~view ()
12{ 12{
13} 13}
14 14
15bool draw_context::may_draw (entity_base *e) 15bool view::may_draw (entity_base *e)
16{ 16{
17 if (drawn.find (e) != drawn.end ()) 17 if (drawn.find (e) != drawn.end ())
18 return false; 18 return false;
19 19
20 drawn.insert (e); 20 drawn.insert (e);
21 return true; 21 return true;
22} 22}
23 23
24void view::draw (draw_context &ctx) 24void view::reset_projection ()
25{ 25{
26 // check occlusion queries here 26 renormalize (orig, p);
27 27
28 ctx.generation++;
29
30 //renormalize (orig, p);
31
32 if (ctx.mode == draw_context::DEPTH)
33 {
34 glEnable (GL_POLYGON_OFFSET_FILL);
35 glPolygonOffset (0, 1);
36 glDepthFunc (GL_LESS);
37 glDisable (GL_LIGHTING);
38 glColorMask (0, 0, 0, 0);
39 }
40 else
41 {
42 glDisable (GL_POLYGON_OFFSET_FILL);
43 glDrawBuffer (GL_BACK);
44 glDepthFunc (GL_LEQUAL);
45 glEnable (GL_LIGHTING);
46 glDepthMask (0);
47 }
48
49 glViewport (0, 0, w, h); 28 glViewport (0, 0, w, h);
50 29
51 glMatrixMode (GL_PROJECTION); 30 glMatrixMode (GL_PROJECTION);
52 glLoadIdentity (); 31 glLoadIdentity ();
53 32
54 GLdouble aspect = (GLdouble)w/h; 33 GLdouble aspect = (GLdouble)w/h;
55 GLdouble zNear = 0.001; 34 GLdouble zNear = 0.1;
56 GLdouble zFar = 100.; 35 GLdouble zFar = 50.;
57 36
58 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); 37 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0));
59 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); 38 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar);
60 39
40 d = normalize (d);//D
41 u = normalize (u);//D
61 vec3 rz = -d; 42 vec3 rz = -d;
62 vec3 rx = cross (u, rz); 43 vec3 rx = cross (u, rz);
63 vec3 ry = cross (rz, rx); 44 vec3 ry = cross (rz, rx);
64 45
65 gl_matrix &m = ctx.projection; 46 matrix &m = projection;
66 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0; 47 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;
67 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0; 48 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0;
68 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0; 49 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0;
69 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1; 50 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
70 51
71 glMultMatrixf ((GLfloat *)m.data); 52 glMultMatrixf ((GLfloat *)m.data);
72 53
54 glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m);
55
56 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) );
57 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) );
58 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) );
59 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) );
60 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) );
61 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) );
62
73 glMatrixMode (GL_MODELVIEW); 63 glMatrixMode (GL_MODELVIEW);
74 glLoadIdentity (); 64 glLoadIdentity ();
75 glTranslatef (-p.x, -p.y, -p.z); 65 glTranslatef (-p.x, -p.y, -p.z);
66}
76 67
77 world.draw (ctx); 68void view::begin ()
69{
70 vismap.clear ();
71 vislist.clear ();
78 72
73 generation++;
74
75 reset_projection ();
76
77 // check occlusion queries here
78 for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i)
79 //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query));
80 occ_query_result ((*i)->occ_query);
81
82 checklist.clear ();
83
84 world.detect_visibility (*this);
85}
86
87void view::end ()
88{
89 vismap.clear ();
90}
91
92void view::pass (enum mode m)
93{
94 mode = m;
95
96 glDisable (GL_ALPHA_TEST);
97 glDisable (GL_BLEND);
98
99 if (mode == view::DEPTH)
100 {
101 glEnable (GL_POLYGON_OFFSET_FILL);
102 glPolygonOffset (0, 1);
103 glDepthFunc (GL_LESS);
104 glDisable (GL_LIGHTING);
105 glColorMask (0, 0, 0, 0);
106 //cgGLDisableProfile (CG_PROFILE_ARBVP1);
107 cgGLDisableProfile (CG_PROFILE_ARBFP1);
108 }
109 else
110 {
111#if 0
112 glEnable (GL_MINMAX);
113#endif
114 glDisable (GL_POLYGON_OFFSET_FILL);
115 glDepthFunc (GL_LESS);
116 glDepthMask (0);
117 cgGLEnableProfile (CG_PROFILE_ARBVP1);
118 cgGLEnableProfile (CG_PROFILE_ARBFP1);
119 }
120
121 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
122 (*i)->display (*this);
123
79 ctx.drawn.clear (); 124 drawn.clear ();
80 125
81 glColorMask (1, 1, 1, 0); 126 glColorMask (1, 1, 1, 0);
82 glDepthMask (1); 127 glDepthMask (1);
83} 128}
84 129
130

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