libgender/entity.h

#ifndef ENTITY_H
#define ENTITY_H

#include <GL/gl.h>

#include <vector>

#include "oct.h"

using namespace std;

typedef unsigned int soffs; // 32 bit
const soffs soffs_max = 1UL << 31;

#define GLFLOAT_MAX 1e30
#define GLFLOAT_MIN -1e30

struct sector {
  soffs x, y, z;
};

struct point {
  GLfloat x, y, z;

  point () { };
  point (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
};

struct colour {
  GLfloat r, g, b;
  colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1.) : r(r), g(g), b(b) { };
};

struct vec3 {
  GLfloat x, y, z;
  vec3 () { };
  vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };

  const vec3 operator -() const
  { return vec3 (-x, -y, -z); }
};

const vec3 cross (const vec3 &a, const vec3 &b);
GLfloat dot (const vec3 &a, const vec3 &b);

struct texc {
  GLfloat s, t;
  texc () { };
  texc (GLfloat s, GLfloat t) : s(s), t(t) { };
};

struct box {
  point a, b;

  void reset ()
  {
    a = point (GLFLOAT_MAX, GLFLOAT_MAX, GLFLOAT_MAX);
    b = point (GLFLOAT_MIN, GLFLOAT_MIN, GLFLOAT_MIN);
  }

  void add (const box &o);
};

struct entity_base {
  struct entity_base *parent;
  vector<octant *> o;
  box bbox;

  virtual void update_bbox ();
  virtual void show (const sector &sec) { };
  void hide ();
  virtual void draw () = 0;
  virtual ~entity_base ()
  {
    hide ();
  };
};

struct entity_container : entity_base, protected vector<entity_base *> {
  void add (entity_base *e) { push_back (e); e->parent = this; }
  void update_bbox ();
  void show (const sector &sec);
  void draw ();
  ~entity_container ();
};

struct entity_filter : entity_base {
protected:
  entity_base *e;
public:

  void set (entity_base *e)
  {
    this->e = e;
    e->parent = this;
  }

  void remove ()
  {
    this->e->parent = 0;
    this->e = 0;
  }

  entity_base *content () { return e; };

  void update_bbox ();
  void show (const sector &sec);
  void draw ();
  ~entity_filter ();
};

struct entity : entity_filter {
  sector sec;

  void show (const sector &sec);
  void show ();
  void draw ();
};

struct entity_affine : entity_filter {
  //matrix m;
};

struct vertex1d {
  colour c; // colour
  point  p; // vertex
};

struct vertex2d {
  colour c; // colour
  point  p; // vertex
  vec3   n; // normal
  texc   t; // texture

  vertex2d () { };
  vertex2d (colour c, point p, vec3 n, texc t = texc()) : c(c), p(p), n(n), t(t) { };
};

template<GLenum type>
struct entity_opengl1d : entity_base, vector<vertex1d> {
  void update_bbox ();
  void show (const sector &sec);
  void draw ();
};

template<GLenum type>
struct entity_opengl2d : entity_base, vector<vertex2d> {
  void update_bbox ();
  void show (const sector &sec);
  void draw ();
};

typedef entity_opengl1d<GL_POINTS>         entity_points;
typedef entity_opengl1d<GL_LINES>          entity_lines;
typedef entity_opengl1d<GL_LINE_STRIP>     entity_line_strip;
typedef entity_opengl1d<GL_LINE_LOOP>      entity_line_loop;
typedef entity_opengl2d<GL_TRIANGLES>      entity_triangles;
typedef entity_opengl2d<GL_TRIANGLE_STRIP> entity_triangle_strip;
typedef entity_opengl2d<GL_TRIANGLE_FAN>   entity_triangle_fan;
typedef entity_opengl2d<GL_QUADS>          entity_quads;
typedef entity_opengl2d<GL_QUAD_STRIP>     entity_quad_strip;
typedef entity_opengl2d<GL_POLYGON>        entity_polygon;

struct light {
  point p;
  colour c;
  GLfloat intensity;
  GLfloat radius;
};

struct draw_context {
  enum { DEPTH, AMBIENT, LIGHTED } mode;
  light *l;
};

struct view {
  point p;
  vec3 d, u;
  float fov;
  int w, h;

  void draw (const draw_context &c);
};

#endif


Revision:	1.4
Committed:	Sun Oct 3 02:37:55 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+1 -0 lines
Log Message:	add method in entity_container
#	Content
1	#ifndef ENTITY_H
2	#define ENTITY_H
3
4	#include <GL/gl.h>
5
6	#include <vector>
7
8	#include "oct.h"
9
10	using namespace std;
11
12	typedef unsigned int soffs; // 32 bit
13	const soffs soffs_max = 1UL << 31;
14
15	#define GLFLOAT_MAX 1e30
16	#define GLFLOAT_MIN -1e30
17
18	struct sector {
19	soffs x, y, z;
20	};
21
22	struct point {
23	GLfloat x, y, z;
24
25	point () { };
26	point (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
27	};
28
29	struct colour {
30	GLfloat r, g, b;
31	colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1.) : r(r), g(g), b(b) { };
32	};
33
34	struct vec3 {
35	GLfloat x, y, z;
36	vec3 () { };
37	vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
38
39	const vec3 operator -() const
40	{ return vec3 (-x, -y, -z); }
41	};
42
43	const vec3 cross (const vec3 &a, const vec3 &b);
44	GLfloat dot (const vec3 &a, const vec3 &b);
45
46	struct texc {
47	GLfloat s, t;
48	texc () { };
49	texc (GLfloat s, GLfloat t) : s(s), t(t) { };
50	};
51
52	struct box {
53	point a, b;
54
55	void reset ()
56	{
57	a = point (GLFLOAT_MAX, GLFLOAT_MAX, GLFLOAT_MAX);
58	b = point (GLFLOAT_MIN, GLFLOAT_MIN, GLFLOAT_MIN);
59	}
60
61	void add (const box &o);
62	};
63
64	struct entity_base {
65	struct entity_base *parent;
66	vector<octant *> o;
67	box bbox;
68
69	virtual void update_bbox ();
70	virtual void show (const sector &sec) { };
71	void hide ();
72	virtual void draw () = 0;
73	virtual ~entity_base ()
74	{
75	hide ();
76	};
77	};
78
79	struct entity_container : entity_base, protected vector<entity_base *> {
80	void add (entity_base *e) { push_back (e); e->parent = this; }
81	void update_bbox ();
82	void show (const sector &sec);
83	void draw ();
84	~entity_container ();
85	};
86
87	struct entity_filter : entity_base {
88	protected:
89	entity_base *e;
90	public:
91
92	void set (entity_base *e)
93	{
94	this->e = e;
95	e->parent = this;
96	}
97
98	void remove ()
99	{
100	this->e->parent = 0;
101	this->e = 0;
102	}
103
104	entity_base *content () { return e; };
105
106	void update_bbox ();
107	void show (const sector &sec);
108	void draw ();
109	~entity_filter ();
110	};
111
112	struct entity : entity_filter {
113	sector sec;
114
115	void show (const sector &sec);
116	void show ();
117	void draw ();
118	};
119
120	struct entity_affine : entity_filter {
121	//matrix m;
122	};
123
124	struct vertex1d {
125	colour c; // colour
126	point p; // vertex
127	};
128
129	struct vertex2d {
130	colour c; // colour
131	point p; // vertex
132	vec3 n; // normal
133	texc t; // texture
134
135	vertex2d () { };
136	vertex2d (colour c, point p, vec3 n, texc t = texc()) : c(c), p(p), n(n), t(t) { };
137	};
138
139	template<GLenum type>
140	struct entity_opengl1d : entity_base, vector<vertex1d> {
141	void update_bbox ();
142	void show (const sector &sec);
143	void draw ();
144	};
145
146	template<GLenum type>
147	struct entity_opengl2d : entity_base, vector<vertex2d> {
148	void update_bbox ();
149	void show (const sector &sec);
150	void draw ();
151	};
152
153	typedef entity_opengl1d<GL_POINTS> entity_points;
154	typedef entity_opengl1d<GL_LINES> entity_lines;
155	typedef entity_opengl1d<GL_LINE_STRIP> entity_line_strip;
156	typedef entity_opengl1d<GL_LINE_LOOP> entity_line_loop;
157	typedef entity_opengl2d<GL_TRIANGLES> entity_triangles;
158	typedef entity_opengl2d<GL_TRIANGLE_STRIP> entity_triangle_strip;
159	typedef entity_opengl2d<GL_TRIANGLE_FAN> entity_triangle_fan;
160	typedef entity_opengl2d<GL_QUADS> entity_quads;
161	typedef entity_opengl2d<GL_QUAD_STRIP> entity_quad_strip;
162	typedef entity_opengl2d<GL_POLYGON> entity_polygon;
163
164	struct light {
165	point p;
166	colour c;
167	GLfloat intensity;
168	GLfloat radius;
169	};
170
171	struct draw_context {
172	enum { DEPTH, AMBIENT, LIGHTED } mode;
173	light *l;
174	};
175
176	struct view {
177	point p;
178	vec3 d, u;
179	float fov;
180	int w, h;
181
182	void draw (const draw_context &c);
183	};
184
185	#endif
186
187
188