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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 | |
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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 | |
13 | |
64 | struct entity_base { |
14 | struct entity_base { |
65 | struct entity_base *parent; |
15 | struct entity_base *parent; |
66 | vector<octant *> o; |
16 | vector<octant *> o; |
67 | box bbox; |
17 | box bbox; |
68 | |
18 | |
69 | virtual void update_bbox (); |
19 | virtual void update_bbox (); |
70 | virtual void show (const sector &sec) { }; |
20 | virtual void show (const sector &sec) { }; |
71 | void hide (); |
21 | void hide (); |
72 | virtual void draw () = 0; |
22 | virtual void draw (draw_context &ctx) = 0; |
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23 | void try_draw (draw_context &ctx) { if (ctx.may_draw (this)) draw (ctx); } |
73 | virtual ~entity_base () |
24 | virtual ~entity_base () |
74 | { |
25 | { |
75 | hide (); |
26 | hide (); |
76 | }; |
27 | }; |
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); |
33 | void show (const sector &sec); |
82 | void draw (); |
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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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); |
58 | void show (const sector &sec); |
107 | void draw (); |
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; |
64 | sector sec; |
113 | |
65 | |
114 | void show (const sector &sec); |
66 | void show (const sector &sec); |
115 | void show (); |
67 | void show (); |
116 | void draw (); |
68 | void draw (draw_context &ctx); |
117 | }; |
69 | }; |
118 | |
70 | |
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71 | #if 0 |
119 | struct entity_affine : entity_filter { |
72 | struct entity_affine : entity_filter { |
120 | //matrix m; |
73 | GLfloat m[4][4]; |
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74 | |
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75 | void draw (draw_context &ctx); |
121 | }; |
76 | }; |
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77 | #endif |
122 | |
78 | |
123 | struct vertex1d { |
79 | struct vertex1d { |
124 | colour c; // colour |
80 | colour c; // colour |
125 | point p; // vertex |
81 | point p; // vertex |
126 | }; |
82 | }; |
127 | |
83 | |
128 | struct vertex2d { |
84 | struct vertex2d { |
129 | colour c; // colour |
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130 | point p; // vertex |
85 | point p; // vertex |
131 | vec3 n; // normal |
86 | vec3 n; // normal |
132 | texc t; // texture |
87 | texc t; // texture |
133 | |
88 | |
134 | vertex2d () { }; |
89 | vertex2d () { }; |
135 | vertex2d (colour c, point p, vec3 n, texc t = texc()) : c(c), p(p), n(n), t(t) { }; |
90 | vertex2d (point p, vec3 n, texc t = texc()) : p(p), n(n), t(t) { }; |
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91 | }; |
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92 | |
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93 | struct entity_opengl : entity_base { |
136 | }; |
94 | }; |
137 | |
95 | |
138 | template<GLenum type> |
96 | template<GLenum type> |
139 | struct entity_opengl1d : entity_base, vector<vertex1d> { |
97 | struct entity_opengl1d : entity_opengl, vector<vertex1d> { |
140 | void update_bbox (); |
98 | void update_bbox (); |
141 | void show (const sector &sec); |
99 | void show (const sector &sec); |
142 | void draw (); |
100 | void draw (draw_context &ctx); |
143 | }; |
101 | }; |
144 | |
102 | |
145 | template<GLenum type> |
103 | template<GLenum type> |
146 | struct entity_opengl2d : entity_base, vector<vertex2d> { |
104 | struct entity_opengl2d : entity_opengl, vector<vertex2d> { |
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105 | material m; |
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106 | |
147 | void update_bbox (); |
107 | void update_bbox (); |
148 | void show (const sector &sec); |
108 | void show (const sector &sec); |
149 | void draw (); |
109 | void draw (draw_context &ctx); |
150 | }; |
110 | }; |
151 | |
111 | |
152 | typedef entity_opengl1d<GL_POINTS> entity_points; |
112 | typedef entity_opengl1d<GL_POINTS> entity_points; |
153 | typedef entity_opengl1d<GL_LINES> entity_lines; |
113 | typedef entity_opengl1d<GL_LINES> entity_lines; |
154 | typedef entity_opengl1d<GL_LINE_STRIP> entity_line_strip; |
114 | typedef entity_opengl1d<GL_LINE_STRIP> entity_line_strip; |
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158 | typedef entity_opengl2d<GL_TRIANGLE_FAN> entity_triangle_fan; |
118 | typedef entity_opengl2d<GL_TRIANGLE_FAN> entity_triangle_fan; |
159 | typedef entity_opengl2d<GL_QUADS> entity_quads; |
119 | typedef entity_opengl2d<GL_QUADS> entity_quads; |
160 | typedef entity_opengl2d<GL_QUAD_STRIP> entity_quad_strip; |
120 | typedef entity_opengl2d<GL_QUAD_STRIP> entity_quad_strip; |
161 | typedef entity_opengl2d<GL_POLYGON> entity_polygon; |
121 | typedef entity_opengl2d<GL_POLYGON> entity_polygon; |
162 | |
122 | |
163 | struct light { |
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164 | point p; |
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165 | colour c; |
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166 | GLfloat intensity; |
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167 | GLfloat radius; |
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168 | }; |
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169 | |
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170 | struct draw_context { |
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171 | enum { DEPTH, AMBIENT, LIGHTED } mode; |
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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); |
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182 | }; |
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183 | |
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184 | #endif |
123 | #endif |
185 | |
124 | |
186 | |
125 | |
187 | |
126 | |