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3 | |
4 | #include <GL/gl.h> |
4 | #include <GL/gl.h> |
5 | |
5 | |
6 | #include <vector> |
6 | #include <vector> |
7 | |
7 | |
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8 | #include "util.h" |
8 | #include "oct.h" |
9 | #include "oct.h" |
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10 | #include "view.h" |
9 | |
11 | |
10 | using namespace std; |
12 | using namespace std; |
11 | |
13 | |
12 | typedef unsigned int soffs; // 32 bit |
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13 | const soffs soffs_max = 1UL << 31; |
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14 | |
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15 | #define GLFLOAT_MAX 1e30 |
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16 | #define GLFLOAT_MIN -1e30 |
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17 | |
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18 | struct sector { |
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19 | soffs x, y, z; |
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20 | }; |
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21 | |
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22 | struct point { |
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23 | GLfloat x, y, z; |
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24 | |
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25 | point () { }; |
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26 | point (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { }; |
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27 | }; |
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28 | |
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29 | struct colour { |
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30 | GLfloat r, g, b; |
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31 | colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1.) : r(r), g(g), b(b) { }; |
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32 | }; |
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33 | |
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34 | struct vec3 { |
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35 | GLfloat x, y, z; |
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36 | vec3 () { }; |
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37 | vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { }; |
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38 | |
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39 | const vec3 operator -() const |
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40 | { return vec3 (-x, -y, -z); } |
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41 | }; |
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42 | |
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43 | const vec3 cross (const vec3 &a, const vec3 &b); |
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44 | GLfloat dot (const vec3 &a, const vec3 &b); |
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45 | |
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46 | struct texc { |
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47 | GLfloat s, t; |
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48 | texc () { }; |
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49 | texc (GLfloat s, GLfloat t) : s(s), t(t) { }; |
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50 | }; |
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51 | |
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52 | struct box { |
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53 | point a, b; |
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54 | |
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55 | void reset () |
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56 | { |
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57 | a = point (GLFLOAT_MAX, GLFLOAT_MAX, GLFLOAT_MAX); |
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58 | b = point (GLFLOAT_MIN, GLFLOAT_MIN, GLFLOAT_MIN); |
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59 | } |
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60 | |
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61 | void add (const box &o); |
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62 | }; |
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63 | |
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64 | struct entity_base { |
14 | struct entity_base { |
65 | struct entity_base *parent; |
15 | struct entity_base *parent; |
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16 | sector orig; |
66 | vector<octant *> o; |
17 | vector<octant *> o; |
67 | box bbox; |
18 | box bbox; |
68 | |
19 | |
69 | virtual void update_bbox (); |
20 | virtual void update_bbox (); |
70 | virtual void show (const sector &sec) { }; |
21 | virtual void show () { world.add (this); }; |
71 | void hide (); |
22 | void hide (); |
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23 | void display (draw_context &ctx); |
72 | virtual void draw () = 0; |
24 | virtual void draw (draw_context &ctx) = 0; |
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25 | |
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26 | entity_base (); |
73 | virtual ~entity_base () |
27 | virtual ~entity_base (); |
74 | { |
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75 | hide (); |
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76 | }; |
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77 | }; |
28 | }; |
78 | |
29 | |
79 | struct entity_container : entity_base, protected vector<entity_base *> { |
30 | struct entity_container : entity_base, protected vector<entity_base *> { |
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31 | void add (entity_base *e) { push_back (e); e->parent = this; } |
80 | void update_bbox (); |
32 | void update_bbox (); |
81 | void show (const sector &sec); |
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82 | void draw (); |
33 | void show (); |
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34 | void draw (draw_context &ctx); |
83 | ~entity_container (); |
35 | ~entity_container (); |
84 | }; |
36 | }; |
85 | |
37 | |
86 | struct entity_filter : entity_base { |
38 | struct entity_filter : entity_base { |
87 | protected: |
39 | protected: |
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101 | } |
53 | } |
102 | |
54 | |
103 | entity_base *content () { return e; }; |
55 | entity_base *content () { return e; }; |
104 | |
56 | |
105 | void update_bbox (); |
57 | void update_bbox (); |
106 | void show (const sector &sec); |
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107 | void draw (); |
58 | void show (); |
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59 | void draw (draw_context &ctx); |
108 | ~entity_filter (); |
60 | ~entity_filter (); |
109 | }; |
61 | }; |
110 | |
62 | |
111 | struct entity : entity_filter { |
63 | struct entity : entity_filter { |
112 | sector sec; |
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113 | |
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114 | void show (const sector &sec); |
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115 | void show (); |
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116 | void draw (); |
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117 | }; |
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118 | |
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119 | struct entity_affine : entity_filter { |
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120 | //matrix m; |
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121 | }; |
64 | }; |
122 | |
65 | |
123 | struct vertex1d { |
66 | struct vertex1d { |
124 | colour c; // colour |
67 | colour c; // colour |
125 | point p; // vertex |
68 | point p; // vertex |
126 | }; |
69 | }; |
127 | |
70 | |
128 | struct vertex2d { |
71 | struct vertex2d { |
129 | colour c; // colour |
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130 | point p; // vertex |
72 | point p; // vertex |
131 | vec3 n; // normal |
73 | vec3 n; // normal |
132 | texc t; // texture |
74 | texc t; // texture |
133 | |
75 | |
134 | vertex2d () { }; |
76 | vertex2d () { }; |
135 | vertex2d (colour c, point p, vec3 n, texc t = texc()) : c(c), p(p), n(n), t(t) { }; |
77 | vertex2d (point p, vec3 n, texc t = texc()) : p(p), n(n), t(t) { }; |
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78 | }; |
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79 | |
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80 | struct entity_opengl : entity_base { |
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81 | GLuint list; |
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82 | |
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83 | entity_opengl (); |
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84 | ~entity_opengl (); |
136 | }; |
85 | }; |
137 | |
86 | |
138 | template<GLenum type> |
87 | template<GLenum type> |
139 | struct entity_opengl1d : entity_base, vector<vertex1d> { |
88 | struct entity_opengl1d : entity_opengl, vector<vertex1d> { |
140 | void update_bbox (); |
89 | void update_bbox (); |
141 | void show (const sector &sec); |
90 | void draw (draw_context &ctx); |
142 | void draw (); |
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143 | }; |
91 | }; |
144 | |
92 | |
145 | template<GLenum type> |
93 | template<GLenum type> |
146 | struct entity_opengl2d : entity_base, vector<vertex2d> { |
94 | struct entity_opengl2d : entity_opengl { |
147 | void update_bbox (); |
95 | material m; |
148 | void show (const sector &sec); |
96 | |
149 | void draw (); |
97 | void set (const vector<vertex2d> &v); |
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98 | void draw (draw_context &ctx); |
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99 | |
150 | }; |
100 | }; |
151 | |
101 | |
152 | typedef entity_opengl1d<GL_POINTS> entity_points; |
102 | typedef entity_opengl1d<GL_POINTS> entity_points; |
153 | typedef entity_opengl1d<GL_LINES> entity_lines; |
103 | typedef entity_opengl1d<GL_LINES> entity_lines; |
154 | typedef entity_opengl1d<GL_LINE_STRIP> entity_line_strip; |
104 | typedef entity_opengl1d<GL_LINE_STRIP> entity_line_strip; |
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158 | typedef entity_opengl2d<GL_TRIANGLE_FAN> entity_triangle_fan; |
108 | typedef entity_opengl2d<GL_TRIANGLE_FAN> entity_triangle_fan; |
159 | typedef entity_opengl2d<GL_QUADS> entity_quads; |
109 | typedef entity_opengl2d<GL_QUADS> entity_quads; |
160 | typedef entity_opengl2d<GL_QUAD_STRIP> entity_quad_strip; |
110 | typedef entity_opengl2d<GL_QUAD_STRIP> entity_quad_strip; |
161 | typedef entity_opengl2d<GL_POLYGON> entity_polygon; |
111 | typedef entity_opengl2d<GL_POLYGON> entity_polygon; |
162 | |
112 | |
163 | struct light { |
113 | struct entity_transform : entity_filter { |
164 | point p; |
114 | gl_matrix m; |
165 | colour c; |
115 | |
166 | GLfloat intensity; |
116 | entity_transform (); |
167 | GLfloat radius; |
117 | |
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118 | void update_bbox (); |
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119 | void show (); |
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120 | void draw (draw_context &ctx); |
168 | }; |
121 | }; |
169 | |
122 | |
170 | struct draw_context { |
123 | struct entity_anim : entity_transform { |
171 | enum { DEPTH, AMBIENT, LIGHTED } mode; |
124 | GLfloat vx, vy, vz; |
172 | light *l; |
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173 | }; |
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174 | |
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175 | struct view { |
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176 | point p; |
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177 | vec3 d, u; |
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178 | float fov; |
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179 | int w, h; |
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180 | |
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181 | void draw (const draw_context &c); |
125 | void draw (draw_context &ctx); |
182 | }; |
126 | }; |
183 | |
127 | |
184 | #endif |
128 | #endif |
185 | |
129 | |
186 | |
130 | |