| 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_gstos
5 #define tools_sg_render_gstos
6
7 #include "gstos"
8 #include "render_action"
9
10 #include "gstos_add"
11
12 namespace tools {
13 namespace sg {
14
15 class render_gstos : public gstos {
16 typedef gstos parent;
17 public:
18 virtual void visit(gstos_add& a_visitor,draw_type a_style) = 0;
19 protected: //gstos
20 virtual unsigned int create_gsto(std::ostream&,sg::render_manager& a_mgr) {
21 std::vector<float> gsto_data;
22
23 gstos_add _add;
24 visit(_add,draw_points);
25 append(gsto_data,_add.m_xyzs);
26 m_gstos_points_sz = _add.m_xyzs.size();
27
28 _add.clear();
29 visit(_add,draw_lines);
30 append(gsto_data,_add.m_xyzs);
31 m_gstos_lines_sz = _add.m_xyzs.size();
32
33 _add.clear();
34 visit(_add,draw_filled);
35 append(gsto_data,_add.m_xyzs);
36 m_gstos_tris_sz = _add.m_xyzs.size();
37 append(gsto_data,_add.m_nms);
38 m_gstos_nms_sz = _add.m_nms.size();
39
40 if(gsto_data.empty()) return 0;
41
42 return a_mgr.create_gsto_from_data(gsto_data);
43 }
44 public: //node
45 bool gstos_render(render_action& a_action) {
46 const state& state = a_action.state();
47
48 bool draw_edges = false;
49 if(state.m_draw_type==draw_filled) draw_edges = state.m_GL_LIGHTING?false:true;
50
51 if(state.m_use_gsto) {
52 unsigned int _id = get_gsto_id(a_action.out(),a_action.render_manager());
53 if(_id) {
54 bufpos pxyzs = 0;
55 bufpos plines = pxyzs+m_gstos_points_sz*sizeof(float);
56 bufpos ptris = plines+m_gstos_lines_sz*sizeof(float);
57 bufpos pnms = ptris+m_gstos_tris_sz*sizeof(float);
58
59 a_action.begin_gsto(_id);
60 if(draw_edges) {
61 //a_action.set_lighting(false); //NOTE : we should do that if style==draw_fill !
62 a_action.color4f(0,0,0,1); //if lighten, then rendered grey.
63 a_action.line_width(1);
64
65 a_action.draw_gsto_v(gl::lines(),m_gstos_lines_sz/3,plines);
66
67 //pushes back the filled polygons to avoid z-fighting with lines
68 a_action.set_polygon_offset(true);
69
70 a_action.color4f(state.m_color);
71 a_action.line_width(state.m_line_width);
72 //a_action.set_lighting(state.m_GL_LIGHTING);
73 }
74 if(state.m_draw_type==draw_points) {
75 a_action.draw_gsto_v(gl::points(),m_gstos_points_sz/3,pxyzs);
76 } else if(state.m_draw_type==draw_lines) {
77 a_action.draw_gsto_v(gl::lines(),m_gstos_lines_sz/3,plines);
78 } else {
79 a_action.draw_gsto_vn(gl::triangles(),m_gstos_tris_sz/3,ptris,pnms);
80 }
81 if(draw_edges) a_action.set_polygon_offset(state.m_GL_POLYGON_OFFSET_FILL);
82 a_action.end_gsto();
83 return true;
84
85 } else { //!_id
86 // use immediate rendering.
87 }
88
89 } else {
90 clean_gstos(&a_action.render_manager());
91 }
92 return false;
93 }
94 bool gstos_render_no_style(render_action& a_action) { //for sg::markers.
95 const state& state = a_action.state();
96 if(state.m_use_gsto) {
97 unsigned int _id = get_gsto_id(a_action.out(),a_action.render_manager());
98 if(_id) {
99 bufpos pxyzs = 0;
100 bufpos plines = pxyzs+m_gstos_points_sz*sizeof(float);
101 bufpos ptris = plines+m_gstos_lines_sz*sizeof(float);
102 bufpos pnms = ptris+m_gstos_tris_sz*sizeof(float);
103
104 a_action.begin_gsto(_id);
105 a_action.draw_gsto_v(gl::points(),m_gstos_points_sz/3,pxyzs);
106 a_action.draw_gsto_v(gl::lines(),m_gstos_lines_sz/3,plines);
107 a_action.draw_gsto_vn(gl::triangles(),m_gstos_tris_sz/3,ptris,pnms);
108 a_action.end_gsto();
109 return true;
110
111 } else { //!_id
112 // use immediate rendering.
113 }
114
115 } else {
116 clean_gstos(&a_action.render_manager());
117 }
118 return false;
119 }
120 public:
121 render_gstos():parent(),m_gstos_points_sz(0),m_gstos_lines_sz(0),m_gstos_tris_sz(0),m_gstos_nms_sz(0) {}
122 virtual ~render_gstos() {}
123 public:
124 render_gstos(const render_gstos& a_from):parent(a_from),m_gstos_points_sz(0),m_gstos_lines_sz(0),m_gstos_tris_sz(0),m_gstos_nms_sz(0) {}
125 render_gstos& operator=(const render_gstos& a_from){
126 parent::operator=(a_from);
127 m_gstos_points_sz = 0;
128 m_gstos_lines_sz = 0;
129 m_gstos_tris_sz = 0;
130 m_gstos_nms_sz = 0;
131 return *this;
132 }
133 protected:
134 size_t m_gstos_points_sz;
135 size_t m_gstos_lines_sz;
136 size_t m_gstos_tris_sz;
137 size_t m_gstos_nms_sz;
138 };
139
140 }}
141
142 #endif