| Geant4 Cross Reference |
1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
2 // See the file tools.license for terms.
3
4 #ifndef tools_sg_state
5 #define tools_sg_state
6
7 #include <string>
8
9 #include "../lina/rotf" //m_camera_orientation
10 #include "../lina/mat4f"
11 #include "../lina/vec3f"
12 #include "../lina/vec4f"
13 #include "../colorf"
14
15 #ifdef TOOLS_MEM
16 #include "../mem"
17 #include "../S_STRING"
18 #endif
19
20 #include "enums"
21
22 namespace tools {
23 namespace sg {
24
25 class state {
26 #ifdef TOOLS_MEM
27 TOOLS_SCLASS(tools::sg::state)
28 #endif
29 public:
30 state()
31 //must be consistent with tools::sg::viewer::render.
32 :m_ww(0)
33 ,m_wh(0)
34
35 ,m_GL_DEPTH_TEST(true)
36 ,m_GL_LIGHTING(false)
37 ,m_GL_CULL_FACE(true)
38 ,m_GL_POLYGON_OFFSET_FILL(false)
39 ,m_GL_TEXTURE_2D(false)
40 ,m_GL_POINT_SMOOTH(false)
41 ,m_GL_LINE_SMOOTH(false)
42 ,m_GL_BLEND(false)
43
44 ,m_use_gsto(false)
45
46 ,m_winding(winding_ccw)
47 ,m_color(1,1,1,1)
48 ,m_normal(0,0,1)
49
50 ,m_light(0)
51
52 ,m_draw_type(sg::draw_filled)
53 ,m_shade_model(sg::shade_flat)
54
55 ,m_line_width(1)
56 ,m_line_pattern(sg::line_solid)
57 ,m_point_size(1)
58
59 ,m_camera_ortho(true)
60 ,m_camera_znear(1)
61 ,m_camera_zfar(10)
62 ,m_camera_position(vec3f(0,0,1))
63 ,m_camera_orientation(rotf(vec3f(0,0,1),0))
64 //,m_camera_near_height(0)
65 ,m_camera_lrbt(0,0,0,0)
66 {
67 #ifdef TOOLS_MEM
68 mem::increment(s_class().c_str());
69 #endif
70 //m_proj.set_identity();
71 //m_model.set_identity();
72 }
73 virtual ~state(){
74 #ifdef TOOLS_MEM
75 mem::decrement(s_class().c_str());
76 #endif
77 }
78 public:
79 state(const state& a_from)
80 :m_ww(a_from.m_ww)
81 ,m_wh(a_from.m_wh)
82
83 ,m_proj(a_from.m_proj)
84 ,m_model(a_from.m_model)
85
86 ,m_GL_DEPTH_TEST(a_from.m_GL_DEPTH_TEST)
87 ,m_GL_LIGHTING(a_from.m_GL_LIGHTING)
88 ,m_GL_CULL_FACE(a_from.m_GL_CULL_FACE)
89 ,m_GL_POLYGON_OFFSET_FILL(a_from.m_GL_POLYGON_OFFSET_FILL)
90 ,m_GL_TEXTURE_2D(a_from.m_GL_TEXTURE_2D)
91 ,m_GL_POINT_SMOOTH(a_from.m_GL_POINT_SMOOTH)
92 ,m_GL_LINE_SMOOTH(a_from.m_GL_LINE_SMOOTH)
93 ,m_GL_BLEND(a_from.m_GL_BLEND)
94
95 ,m_use_gsto(a_from.m_use_gsto)
96
97 ,m_winding(a_from.m_winding)
98 ,m_color(a_from.m_color)
99 ,m_normal(a_from.m_normal)
100
101 ,m_light(a_from.m_light)
102
103 ,m_draw_type(a_from.m_draw_type)
104 ,m_shade_model(a_from.m_shade_model)
105
106 ,m_line_width(a_from.m_line_width)
107 ,m_line_pattern(a_from.m_line_pattern)
108 ,m_point_size(a_from.m_point_size)
109
110 ,m_camera_ortho(a_from.m_camera_ortho)
111 ,m_camera_znear(a_from.m_camera_znear)
112 ,m_camera_zfar(a_from.m_camera_zfar)
113 ,m_camera_position(a_from.m_camera_position)
114 ,m_camera_orientation(a_from.m_camera_orientation)
115 //,m_camera_near_height(a_from.m_camera_near_height)
116 ,m_camera_lrbt(a_from.m_camera_lrbt)
117 {
118 #ifdef TOOLS_MEM
119 mem::increment(s_class().c_str());
120 #endif
121 }
122 state& operator=(const state& a_from){
123 m_ww = a_from.m_ww;
124 m_wh = a_from.m_wh;
125
126 m_proj = a_from.m_proj;
127 m_model = a_from.m_model;
128
129 m_GL_DEPTH_TEST = a_from.m_GL_DEPTH_TEST;
130 m_GL_LIGHTING = a_from.m_GL_LIGHTING;
131 m_GL_CULL_FACE = a_from.m_GL_CULL_FACE;
132 m_GL_POLYGON_OFFSET_FILL = a_from.m_GL_POLYGON_OFFSET_FILL;
133 m_GL_TEXTURE_2D = a_from.m_GL_TEXTURE_2D;
134 m_GL_POINT_SMOOTH = a_from.m_GL_POINT_SMOOTH;
135 m_GL_LINE_SMOOTH = a_from.m_GL_LINE_SMOOTH;
136 m_GL_BLEND = a_from.m_GL_BLEND;
137
138 m_use_gsto = a_from.m_use_gsto;
139
140 m_winding = a_from.m_winding;
141 m_color = a_from.m_color;
142 m_normal = a_from.m_normal;
143
144 m_light = a_from.m_light;
145
146 m_draw_type = a_from.m_draw_type;
147 m_shade_model = a_from.m_shade_model;
148
149 m_line_width = a_from.m_line_width;
150 m_line_pattern = a_from.m_line_pattern;
151 m_point_size = a_from.m_point_size;
152
153 m_camera_ortho = a_from.m_camera_ortho;
154 m_camera_znear = a_from.m_camera_znear;
155 m_camera_zfar = a_from.m_camera_zfar;
156 m_camera_position = a_from.m_camera_position;
157 m_camera_orientation = a_from.m_camera_orientation;
158 //m_camera_near_height = a_from.m_camera_near_height;
159 m_camera_lrbt = a_from.m_camera_lrbt;
160
161 return *this;
162 }
163 public:
164 bool project_point(float& a_x,float& a_y,float& a_z,float& a_w) const {
165 a_w = 1;
166 m_model.mul_4f(a_x,a_y,a_z,a_w);
167 m_proj.mul_4f(a_x,a_y,a_z,a_w);
168 if(a_w==0.0F) return false;
169 a_x /= a_w;
170 a_y /= a_w;
171 a_z /= a_w;
172 return true;
173 }
174
175 void screen2ndc(int a_x,int a_y, //signed because of wall.
176 float& a_wcx,float& a_wcy,float& a_wcz,float& a_wcw) const {
177 // a proj point in near plane has (z,w) :
178 // ortho -1,1 -> z/w = -1 and xy in [-1,1][-1,1]
179 // persp -n,n -> z/w = -1 and xy in [-n,n][-n,n]
180
181 a_wcx = 2*(float(a_x)/float(m_ww)-0.5f); //in [-1,1]
182 a_wcy = 2*(float(a_y)/float(m_wh)-0.5f);
183 a_wcz = -1;
184
185 if(m_camera_ortho) {
186 a_wcw = 1;
187 } else {
188 float t = m_camera_znear;
189 a_wcx *= t;
190 a_wcy *= t;
191 a_wcz *= t;
192 a_wcw = t;
193 }
194 }
195
196 bool screen2wc(int a_x,int a_y, //signed because of wall.
197 float& a_wcx,float& a_wcy,float& a_wcz) const {
198 mat4f mtx = m_proj;
199 mtx.mul_mtx(m_model);
200 mat4f inv;
201 if(!mtx.invert(inv)) {a_wcx = 0;a_wcy = 0;a_wcz = 0;return false;}
202 float w;
203 screen2ndc(a_x,a_y,a_wcx,a_wcy,a_wcz,w);
204 inv.mul_4f(a_wcx,a_wcy,a_wcz,w);
205 if(w==0.0F) return false;
206 a_wcx /= w;
207 a_wcy /= w;
208 a_wcz /= w;
209 return true;
210 }
211 bool screen2pwc(int a_x,int a_y, //signed because of wall.
212 float& a_wcx,float& a_wcy,float& a_wcz) const {
213 mat4f mtx = m_proj;
214 //mtx.mul_mtx(m_model);
215 mat4f inv;
216 if(!mtx.invert(inv)) {a_wcx = 0;a_wcy = 0;a_wcz = 0;return false;}
217 float w;
218 screen2ndc(a_x,a_y,a_wcx,a_wcy,a_wcz,w);
219 inv.mul_4f(a_wcx,a_wcy,a_wcz,w);
220 if(w==0.0F) return false;
221 a_wcx /= w;
222 a_wcy /= w;
223 a_wcz /= w;
224 return true;
225 }
226 void camera_proj_only(mat4f& a_mtx) const {
227 float l = m_camera_lrbt[0];
228 float r = m_camera_lrbt[1];
229 float b = m_camera_lrbt[2];
230 float t = m_camera_lrbt[3];
231 float n = m_camera_znear;
232 float f = m_camera_zfar;
233 if(m_camera_ortho) {
234 a_mtx.set_ortho(l,r,b,t,n,f);
235 } else {
236 a_mtx.set_frustum(l,r,b,t,n,f);
237 }
238 }
239
240 public:
241 unsigned int m_ww; //window width
242 unsigned int m_wh; //window height
243
244 mat4f m_proj;
245 mat4f m_model;
246
247 bool m_GL_DEPTH_TEST;
248 bool m_GL_LIGHTING;
249 bool m_GL_CULL_FACE;
250 bool m_GL_POLYGON_OFFSET_FILL;
251 bool m_GL_TEXTURE_2D;
252 bool m_GL_POINT_SMOOTH;
253 bool m_GL_LINE_SMOOTH;
254 bool m_GL_BLEND;
255
256 bool m_use_gsto;
257
258 winding_type m_winding;
259 colorf m_color;
260 vec3f m_normal;
261
262 unsigned int m_light;
263
264 draw_type m_draw_type;
265 shade_type m_shade_model;
266
267 float m_line_width;
268 unsigned short m_line_pattern;
269 float m_point_size;
270
271 //camera (see base_camera::set_state()) :
272 bool m_camera_ortho;
273 float m_camera_znear;
274 float m_camera_zfar;
275 vec3f m_camera_position;
276 rotf m_camera_orientation; //used by head_light
277 //float m_camera_near_height;
278 vec4f m_camera_lrbt;
279 };
280
281 }}
282
283 #endif