1 | #include <cmath> |
1 | #include <cmath> |
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2 | |
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3 | #include <GL/gl.h> |
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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 | |
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9 | static GLenum gl_error; |
6 | view::view () |
10 | view::view () |
7 | : gamma(1.0) |
11 | : gamma(1.0) |
8 | { |
12 | { |
9 | } |
13 | } |
10 | |
14 | |
11 | view::~view () |
15 | view::~view () |
12 | { |
16 | { |
13 | } |
17 | } |
14 | |
18 | |
15 | bool view::may_draw (entity_base *e) |
19 | bool view::may_draw (const entity *e) |
16 | { |
20 | { |
17 | if (drawn.find (e) != drawn.end ()) |
21 | if (drawn.find (e) != drawn.end ()) |
18 | return false; |
22 | return false; |
19 | |
23 | |
20 | drawn.insert (e); |
24 | drawn.insert (e); |
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28 | glViewport (0, 0, w, h); |
32 | glViewport (0, 0, w, h); |
29 | |
33 | |
30 | glMatrixMode (GL_PROJECTION); |
34 | glMatrixMode (GL_PROJECTION); |
31 | glLoadIdentity (); |
35 | glLoadIdentity (); |
32 | |
36 | |
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37 | gl_error = glGetError (); |
33 | GLdouble aspect = (GLdouble)w/h; |
38 | GLdouble aspect = (GLdouble)w/h; |
34 | GLdouble zNear = 0.1; |
39 | GLdouble zNear = 1.; |
35 | GLdouble zFar = 50.; |
40 | GLdouble zFar = 500.; |
36 | |
41 | |
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42 | gl_error = glGetError (); |
37 | GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); |
43 | GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); |
38 | glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); |
44 | glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); |
39 | |
45 | |
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46 | gl_error = glGetError (); |
40 | d = normalize (d);//D |
47 | d = normalize (d);//D |
41 | u = normalize (u);//D |
48 | u = normalize (u);//D |
42 | vec3 rz = -d; |
49 | vec3 rz = -d; |
43 | vec3 rx = cross (u, rz); |
50 | vec3 rx = cross (u, rz); |
44 | vec3 ry = cross (rz, rx); |
51 | vec3 ry = cross (rz, rx); |
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52 | gl_error = glGetError (); |
45 | |
53 | |
46 | matrix &m = projection; |
54 | matrix &m = projection; |
47 | 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; |
48 | 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; |
49 | 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; |
50 | 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; |
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59 | gl_error = glGetError (); |
51 | |
60 | |
52 | glMultMatrixf ((GLfloat *)m.data); |
61 | glMultMatrixf ((GLfloat *)m.data); |
53 | |
62 | |
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63 | gl_error = glGetError (); |
54 | glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m); |
64 | glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m); |
55 | |
65 | |
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66 | gl_error = glGetError (); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
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) ); |
62 | |
73 | |
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74 | gl_error = glGetError (); |
63 | glMatrixMode (GL_MODELVIEW); |
75 | glMatrixMode (GL_MODELVIEW); |
64 | glLoadIdentity (); |
76 | glLoadIdentity (); |
65 | glTranslatef (-p.x, -p.y, -p.z); |
77 | glTranslatef (-p.x, -p.y, -p.z); |
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78 | gl_error = glGetError (); |
66 | } |
79 | } |
67 | |
80 | |
68 | void view::begin () |
81 | void view::begin () |
69 | { |
82 | { |
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83 | glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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84 | glDepthRange (0, 1. - (1. / pow (2., 16.))); |
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85 | |
70 | vismap.clear (); |
86 | vismap.clear (); |
71 | vislist.clear (); |
87 | vislist.clear (); |
72 | |
88 | |
73 | generation++; |
89 | generation++; |
74 | |
90 | |
75 | reset_projection (); |
91 | reset_projection (); |
76 | |
92 | |
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93 | for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) |
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94 | ; |
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95 | |
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96 | farlist.clear (); |
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97 | |
77 | // check occlusion queries here |
98 | // check occlusion queries here |
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99 | #if 0 |
78 | for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i) |
100 | for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i) |
79 | //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query)); |
101 | //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query)); |
80 | occ_query_result ((*i)->occ_query); |
102 | occ_query_result ((*i)->occ_query); |
81 | |
103 | |
82 | checklist.clear (); |
104 | checklist.clear (); |
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105 | #endif |
83 | |
106 | |
84 | world.detect_visibility (*this); |
107 | world.detect_visibility (*this); |
85 | } |
108 | } |
86 | |
109 | |
87 | void view::end () |
110 | void view::end () |
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101 | glEnable (GL_POLYGON_OFFSET_FILL); |
124 | glEnable (GL_POLYGON_OFFSET_FILL); |
102 | glPolygonOffset (0, 1); |
125 | glPolygonOffset (0, 1); |
103 | glDepthFunc (GL_LESS); |
126 | glDepthFunc (GL_LESS); |
104 | glDisable (GL_LIGHTING); |
127 | glDisable (GL_LIGHTING); |
105 | glColorMask (0, 0, 0, 0); |
128 | glColorMask (0, 0, 0, 0); |
106 | //cgGLDisableProfile (vsh_profile); |
129 | cgGLEnableProfile (vsh_profile);// z-fighting?? |
107 | cgGLDisableProfile (fsh_profile); |
130 | cgGLDisableProfile (fsh_profile); |
108 | } |
131 | } |
109 | else |
132 | else |
110 | { |
133 | { |
111 | #if 0 |
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112 | glEnable (GL_MINMAX); |
134 | glEnable (GL_MINMAX); |
113 | #endif |
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114 | glDisable (GL_POLYGON_OFFSET_FILL); |
135 | glDisable (GL_POLYGON_OFFSET_FILL); |
115 | glDepthFunc (GL_LESS); |
136 | glDepthFunc (GL_LESS); |
116 | glDepthMask (0); |
137 | glDepthMask (0); |
117 | cgGLEnableProfile (vsh_profile); |
138 | cgGLEnableProfile (vsh_profile); |
118 | cgGLEnableProfile (fsh_profile); |
139 | cgGLEnableProfile (fsh_profile); |
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121 | for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) |
142 | for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) |
122 | (*i)->display (*this); |
143 | (*i)->display (*this); |
123 | |
144 | |
124 | drawn.clear (); |
145 | drawn.clear (); |
125 | |
146 | |
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147 | if (mode == view::DEPTH || 1) |
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148 | { |
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149 | glEnable (GL_DEPTH_CLAMP_NV); |
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150 | glDepthFunc (GL_LESS); |
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151 | if (1) glDepthFunc (GL_LEQUAL); |
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152 | glEnable (GL_COLOR_MATERIAL); |
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153 | glDisable (GL_LIGHTING); |
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154 | cgGLDisableProfile (vsh_profile); |
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155 | cgGLDisableProfile (fsh_profile); |
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156 | glShadeModel (GL_FLAT); |
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157 | |
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158 | #if 0 |
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159 | static int count; count++; |
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160 | if (farlist.size ()) |
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161 | printf ("%d: size %d\n", count, farlist.size ()); |
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162 | #endif |
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163 | |
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164 | for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) |
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165 | { |
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166 | glColor3f (1,0,0); |
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167 | (*i)->draw_bbox (*this); |
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168 | } |
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169 | |
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170 | glEnable (GL_DEPTH_TEST); |
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171 | glDisable (GL_DEPTH_CLAMP_NV); |
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172 | glShadeModel (GL_SMOOTH); |
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173 | } |
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174 | |
126 | glColorMask (1, 1, 1, 0); |
175 | glColorMask (1, 1, 1, 0); |
127 | glDepthMask (1); |
176 | glDepthMask (1); |
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177 | |
128 | } |
178 | } |
129 | |
179 | |
130 | |
180 | |