| 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_render_action
5 #define tools_sg_render_action
6
7 #include "matrix_action"
8
9 #include "../glprims"
10 #include "../vdata"
11 #include "../colorf"
12
13 namespace tools {
14 namespace sg {
15 class render_manager;
16 }}
17
18
19 namespace tools {
20 namespace sg {
21
22 typedef size_t bufpos;
23
24 class render_action : public matrix_action {
25 TOOLS_ACTION_NO_COPY(render_action,tools::sg::render_action,matrix_action)
26 public:
27 typedef unsigned int gstoid;
28 public:
29 virtual void load_proj_matrix(const mat4f&) = 0;
30 virtual void load_model_matrix(const mat4f&) = 0;
31 public:
32 virtual void draw_vertex_array(gl::mode_t,size_t,const float*) = 0;
33 virtual void draw_vertex_array_xy(gl::mode_t,size_t,const float*) = 0;
34 virtual void draw_vertex_color_array(gl::mode_t,size_t,const float*,const float*) = 0;
35 virtual void draw_vertex_normal_array(gl::mode_t,size_t,const float*,const float*) = 0;
36 virtual void draw_vertex_color_normal_array(gl::mode_t,size_t,const float*,const float*,const float*) = 0;
37
38 /////////////////////////////////////////////////////////////////
39 /// texture /////////////////////////////////////////////////////
40 /////////////////////////////////////////////////////////////////
41 virtual void draw_vertex_array_texture(gl::mode_t,size_t,const float*,gstoid,const float*) = 0;
42 virtual void draw_vertex_normal_array_texture(gl::mode_t,size_t,const float*,const float*,gstoid,const float*) = 0;
43
44 /////////////////////////////////////////////////////////////////
45 /// VBO /////////////////////////////////////////////////////////
46 /////////////////////////////////////////////////////////////////
47 virtual void begin_gsto(gstoid) = 0;
48 virtual void draw_gsto_v(gl::mode_t,size_t,bufpos) = 0;
49 virtual void draw_gsto_vc(gl::mode_t,size_t,bufpos,bufpos) = 0;
50 virtual void draw_gsto_vn(gl::mode_t,size_t,bufpos,bufpos) = 0;
51 virtual void draw_gsto_vcn(gl::mode_t,size_t,bufpos,bufpos,bufpos) = 0;
52 virtual void end_gsto() = 0;
53 /////////////////////////////////////////////////////////////////
54 /////////////////////////////////////////////////////////////////
55 /////////////////////////////////////////////////////////////////
56
57 virtual void clear_color(float,float,float,float) = 0;
58 virtual void color4f(float,float,float,float) = 0;
59 virtual void line_width(float) = 0;
60 virtual void point_size(float) = 0;
61 virtual void set_polygon_offset(bool) = 0;
62 virtual void set_winding(winding_type) = 0;
63 virtual void set_shade_model(shade_type) = 0;
64 virtual void set_cull_face(bool) = 0;
65 virtual void set_point_smooth(bool) = 0;
66 virtual void set_line_smooth(bool) = 0;
67 virtual void normal(float,float,float) = 0;
68 virtual void set_depth_test(bool) = 0;
69 virtual unsigned int max_lights() = 0;
70 virtual void enable_light(unsigned int,
71 float,float,float, //directrion
72 float,float,float,float, //diffuse RGBA
73 float,float,float,float) = 0; //ambient RGBA
74 virtual void set_lighting(bool) = 0;
75 virtual void set_blend(bool) = 0;
76 virtual void restore_state(unsigned int) = 0;
77
78 virtual sg::render_manager& render_manager() = 0; //sg:: is needed.
79 public:
80 render_action(std::ostream& a_out,unsigned int a_ww,unsigned int a_wh)
81 :parent(a_out,a_ww,a_wh)
82 ,m_do_transparency(false)
83 ,m_have_to_do_transparency(false)
84 {}
85 virtual ~render_action(){}
86 public:
87 render_action(const render_action& a_from)
88 :parent(a_from)
89 ,m_do_transparency(a_from.m_do_transparency)
90 ,m_have_to_do_transparency(a_from.m_have_to_do_transparency)
91 {}
92 render_action& operator=(const render_action& a_from){
93 parent::operator=(a_from);
94 m_do_transparency = a_from.m_do_transparency;
95 m_have_to_do_transparency = a_from.m_have_to_do_transparency;
96 return *this;
97 }
98 public:
99 void set_do_transparency(bool a_value) {m_do_transparency = a_value;}
100 bool do_transparency() const {return m_do_transparency;}
101 void set_have_to_do_transparency(bool a_value) {m_have_to_do_transparency = a_value;}
102 bool have_to_do_transparency() const {return m_have_to_do_transparency;}
103
104 bool have_to_render() {
105 bool transparent = state().m_color.a()!=1.0f?true:false;
106 if(transparent && state().m_GL_BLEND) {
107 if(m_do_transparency) return true;
108 m_have_to_do_transparency = true;
109 return false;
110 }
111 if(m_do_transparency) return false;
112 return true;
113 }
114
115 void load_matrices_to_identity() {
116 load_proj_matrix(m_identity);
117 load_model_matrix(m_identity);
118 }
119 void load_matrices_from_state() {
120 const sg::state& _state = state();
121 load_proj_matrix(_state.m_proj);
122 load_model_matrix(_state.m_model);
123 }
124
125 void clear_color(const colorf& a_color){
126 clear_color(a_color[0],a_color[1],a_color[2],a_color[3]);
127 }
128 void color4f(const colorf& a_color){
129 color4f(a_color[0],a_color[1],a_color[2],a_color[3]);
130 }
131
132 void enable_light(unsigned int a_light,
133 const vec3f& a_dir,
134 const colorf& a_col,const colorf& a_ambient) {
135 enable_light(a_light,
136 a_dir[0],a_dir[1],a_dir[2],
137 a_col[0],a_col[1],a_col[2],a_col[3],
138 a_ambient[0],a_ambient[1],a_ambient[2],a_ambient[3]);
139 }
140
141 void draw_vertex_array(gl::mode_t a_mode,const std::vector<float>& a_xyzs){
142 const float* _xyzs = vec_data<float>(a_xyzs);
143 draw_vertex_array(a_mode,a_xyzs.size(),_xyzs);
144 }
145
146 void draw_vertex_array_xy(gl::mode_t a_mode,const std::vector<float>& a_xys){
147 const float* _xys = vec_data<float>(a_xys);
148 draw_vertex_array_xy(a_mode,a_xys.size(),_xys);
149 }
150
151 void draw_vertex_color_array(gl::mode_t a_mode,
152 const std::vector<float>& a_xyzs,
153 const std::vector<float>& a_rgbas){
154 const float* _xyzs = vec_data<float>(a_xyzs);
155 const float* _rgbas = vec_data<float>(a_rgbas);
156 draw_vertex_color_array(a_mode,a_xyzs.size(),_xyzs,_rgbas);
157 }
158
159 void draw_vertex_normal_array(gl::mode_t a_mode,
160 const std::vector<float>& a_xyzs,
161 const std::vector<float>& a_nms){
162 const float* _xyzs = vec_data<float>(a_xyzs);
163 const float* _nms = vec_data<float>(a_nms);
164 draw_vertex_normal_array(a_mode,a_xyzs.size(),_xyzs,_nms);
165 }
166
167 void draw_vertex_color_normal_array(gl::mode_t a_mode,
168 const std::vector<float>& a_xyzs,
169 const std::vector<float>& a_rgbas,
170 const std::vector<float>& a_nms){
171 const float* _xyzs = vec_data<float>(a_xyzs);
172 const float* _rgbas = vec_data<float>(a_rgbas);
173 const float* _nms = vec_data<float>(a_nms);
174 draw_vertex_color_normal_array(a_mode,a_xyzs.size(),_xyzs,_rgbas,_nms);
175 }
176
177 void normal(const vec3f& a_vec) {normal(a_vec[0],a_vec[1],a_vec[2]);}
178
179 public:
180 // for sphere::visit template.
181 bool add_triangles_normal(size_t a_floatn,const float* a_xyzs,const float* a_nms) {
182 draw_vertex_normal_array(gl::triangles(),a_floatn,a_xyzs,a_nms);
183 return true;
184 }
185 bool add_triangle_fan_normal(size_t a_floatn,const float* a_xyzs,const float* a_nms) {
186 draw_vertex_normal_array(gl::triangle_fan(),a_floatn,a_xyzs,a_nms);
187 return true;
188 }
189 bool add_triangle_fan_normal_rgba(size_t a_floatn,const float* a_xyzs,float* a_nms,const float* a_rgbas) {
190 draw_vertex_color_normal_array(gl::triangle_fan(),a_floatn,a_xyzs,a_rgbas,a_nms);
191 return true;
192 }
193 bool add_triangle_strip_normal(size_t a_floatn,const float* a_xyzs,const float* a_nms) {
194 draw_vertex_normal_array(gl::triangle_strip(),a_floatn,a_xyzs,a_nms);
195 return true;
196 }
197 bool add_triangle_strip_normal_rgba(size_t a_floatn,const float* a_xyzs,const float* a_nms,const float* a_rgbas) {
198 draw_vertex_color_normal_array(gl::triangle_strip(),a_floatn,a_xyzs,a_rgbas,a_nms);
199 return true;
200 }
201 bool add_lines(size_t a_floatn,const float* a_xyzs) {
202 draw_vertex_array(gl::lines(),a_floatn,a_xyzs);
203 return true;
204 }
205 bool add_line_loop(size_t a_floatn,const float* a_xyzs) {
206 draw_vertex_array(gl::line_loop(),a_floatn,a_xyzs);
207 return true;
208 }
209 bool add_line_strip(size_t a_floatn,const float* a_xyzs) {
210 draw_vertex_array(gl::line_strip(),a_floatn,a_xyzs);
211 return true;
212 }
213 bool add_points(size_t a_floatn,const float* a_xyzs) {
214 draw_vertex_array(gl::points(),a_floatn,a_xyzs);
215 return true;
216 }
217
218 /*
219 bool add_triangles_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
220 draw_vertex_array_texture(gl::triangles(),a_floatn,a_xyzs,a_tex,a_texs);
221 return true;
222 }
223 bool add_triangle_fan_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
224 draw_vertex_array_texture(gl::triangle_fan(),a_floatn,a_xyzs,a_tex,a_texs);
225 return true;
226 }
227 bool add_triangle_strip_texture(size_t a_floatn,const float* a_xyzs,gstoid a_tex,const float* a_texs){
228 draw_vertex_array_texture(gl::triangle_strip(),a_floatn,a_xyzs,a_tex,a_texs);
229 return true;
230 }
231 */
232 bool add_triangle_fan_texture_normal(size_t a_floatn,const float* a_xyzs,const float* a_nms,gstoid a_tex,const float* a_texs){
233 draw_vertex_normal_array_texture(gl::triangle_fan(),a_floatn,a_xyzs,a_nms,a_tex,a_texs);
234 return true;
235 }
236 bool add_triangle_strip_texture_normal(size_t a_floatn,const float* a_xyzs,const float* a_nms,gstoid a_tex,const float* a_texs){
237 draw_vertex_normal_array_texture(gl::triangle_strip(),a_floatn,a_xyzs,a_nms,a_tex,a_texs);
238 return true;
239 }
240
241 bool add_line_loop(const std::vector<float>& a_xyzs){
242 const float* _xyzs = vec_data<float>(a_xyzs);
243 draw_vertex_array(gl::line_loop(),a_xyzs.size(),_xyzs);
244 return true;
245 }
246
247 bool add_line_strip(const std::vector<float>& a_xyzs){
248 const float* _xyzs = vec_data<float>(a_xyzs);
249 draw_vertex_array(gl::line_strip(),a_xyzs.size(),_xyzs);
250 return true;
251 }
252
253 /*
254 /////////////////////////////////////////////////////////
255 /// for sg::markers and gstos : /////////////////////////
256 /////////////////////////////////////////////////////////
257 bool add_lines(const std::vector<float>& a_xyzs){
258 const float* _xyzs = vec_data<float>(a_xyzs);
259 draw_vertex_array(gl::lines(),a_xyzs.size(),_xyzs);
260 return true;
261 }
262 bool add_triangles_normal(const std::vector<float>& a_xyzs,const std::vector<float>& a_nms){
263 if(a_xyzs.size()!=a_nms.size()) return false;
264 const float* _xyzs = vec_data<float>(a_xyzs);
265 const float* _nms = vec_data<float>(a_nms);
266 draw_vertex_normal_array(gl::triangles(),a_xyzs.size(),_xyzs,_nms);
267 return true;
268 }
269 bool project_point(const mat4f& a_model_matrix,const mat4f& a_projection_matrix,
270 float& a_x,float& a_y,float& a_z,float& a_w) {
271 //return project_point(a_x,a_y,a_z,a_w);
272 a_w = 1;
273 a_model_matrix.mul_4f(a_x,a_y,a_z,a_w);
274 a_projection_matrix.mul_4f(a_x,a_y,a_z,a_w);
275 if(a_w==0.0F) return false;
276 a_x /= a_w;
277 a_y /= a_w;
278 a_z /= a_w;
279 return true;
280 }
281 /////////////////////////////////////////////////////////
282 /////////////////////////////////////////////////////////
283 /////////////////////////////////////////////////////////
284 */
285
286 bool add_triangle_strip_as_triangles(size_t a_floatn,const float* a_xyzs,const float* a_nms) { //used in sg::sphere, icosahedron_sphere.
287 // It appears that if glShadeModel is GL_FLAT, triangle strip does not look the same in "gsto mode" where it is rendered as triangles.
288 // We use this function for immediate rendering, in case we want the same rendering as "gsto mode".
289
290 size_t num = a_floatn/3;
291 if(num<3) return false;
292 size_t nxyzs = (num-2)*3*3;
293
294 std::vector<float> m_xyzs(nxyzs);
295 std::vector<float> m_nms(nxyzs);
296
297 {float* pxyzs = vec_data<float>(m_xyzs);
298 float* pnms = vec_data<float>(m_nms);
299 gl::triangle_strip_to_triangles_nms(num,a_xyzs,a_nms,pxyzs,pnms);}
300
301 return add_triangles_normal(nxyzs,vec_data<float>(m_xyzs),vec_data<float>(m_nms));
302 }
303
304 void dump_vertex_array_xy(std::ostream& a_out,gl::mode_t /*a_mode*/,size_t a_floatn,const float* a_xys) {
305 size_t num = a_floatn/2;
306 if(!num) return;
307 a_out << "dump_vertex_array_xy : begin : " << num << std::endl;
308 for(size_t index=0;index<num;index++) {
309 a_out << "xy : " << index
310 << " " << a_xys[2*index]
311 << " " << a_xys[2*index+1]
312 << std::endl;
313 }
314 a_out << "dump_vertex_array_xy : end." << std::endl;
315 }
316 protected:
317 bool m_do_transparency;
318 bool m_have_to_do_transparency;
319 };
320
321 }}
322
323 #endif