| 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_draw_style
5 #define tools_sg_draw_style
6
7 #include "node"
8
9 #include "lpat"
10 #include "sf_enum"
11 #include "render_action"
12 #include "pick_action"
13 #include "bbox_action"
14
15 namespace tools {
16 namespace sg {
17
18 class draw_style : public node {
19 TOOLS_NODE(draw_style,tools::sg::draw_style,node)
20 public:
21 sf_enum<draw_type> style;
22 sf<float> line_width;
23 sf<lpat> line_pattern;
24 sf<float> point_size;
25 sf<bool> cull_face;
26 sf<bool> winding_ccw;
27 public:
28 virtual const desc_fields& node_desc_fields() const {
29 TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::draw_style)
30 static const desc_fields s_v(parent::node_desc_fields(),6, //WARNING : take care of count.
31 TOOLS_ARG_FIELD_DESC(style),
32 TOOLS_ARG_FIELD_DESC(line_width),
33 TOOLS_ARG_FIELD_DESC(line_pattern),
34 TOOLS_ARG_FIELD_DESC(point_size),
35 TOOLS_ARG_FIELD_DESC(cull_face),
36 TOOLS_ARG_FIELD_DESC(winding_ccw)
37 );
38 return s_v;
39 }
40 private:
41 void add_fields(){
42 add_field(&style);
43 add_field(&line_width);
44 add_field(&line_pattern);
45 add_field(&point_size);
46 add_field(&cull_face);
47 add_field(&winding_ccw);
48 }
49 public:
50 virtual void render(render_action& a_action) {
51 state& state = a_action.state();
52 _set_state(state);
53
54 if(style.value()==draw_lines) {
55 //no LINE_STIPPLE in GLES.
56 //::glEnable(GL_LINE_STIPPLE); //done in viewer::render()
57 //::glLineStipple(1,line_pattern.value());
58 a_action.line_width(state.m_line_width);
59 } else if(style.value()==draw_points) {
60 a_action.point_size(state.m_point_size);
61 } else if(style.value()==draw_filled) {
62 a_action.set_cull_face(state.m_GL_CULL_FACE);
63 a_action.set_winding(state.m_winding);
64 }
65 }
66 virtual void pick(pick_action& a_action) {_set_state(a_action.state());}
67 virtual void bbox(bbox_action& a_action) {_set_state(a_action.state());}
68 public:
69 draw_style()
70 :parent()
71 ,style(draw_filled)
72 ,line_width(1) //NOTE : 0 induces a 501 gl error.
73 ,line_pattern(line_solid)
74 ,point_size(1)
75 ,cull_face(true)
76 ,winding_ccw(true)
77 {
78 add_fields();
79 }
80 virtual ~draw_style(){}
81 public:
82 draw_style(const draw_style& a_from)
83 :parent(a_from)
84 ,style(a_from.style)
85 ,line_width(a_from.line_width)
86 ,line_pattern(a_from.line_pattern)
87 ,point_size(a_from.point_size)
88 ,cull_face(a_from.cull_face)
89 ,winding_ccw(a_from.winding_ccw)
90 {
91 add_fields();
92 }
93 draw_style& operator=(const draw_style& a_from){
94 parent::operator=(a_from);
95
96 style = a_from.style;
97 line_width = a_from.line_width;
98 line_pattern = a_from.line_pattern;
99 point_size = a_from.point_size;
100 cull_face = a_from.cull_face;
101 winding_ccw = a_from.winding_ccw;
102
103 return *this;
104 }
105 protected:
106 void _set_state(state& a_state) {
107 a_state.m_draw_type = style;
108 a_state.m_line_width = line_width;
109 a_state.m_line_pattern = line_pattern;
110 a_state.m_point_size = point_size;
111 a_state.m_GL_CULL_FACE = cull_face;
112 a_state.m_winding = winding_ccw.value()?sg::winding_ccw:sg::winding_cw;
113 }
114 };
115
116 }}
117
118 #endif