Warning, /include/Geant4/tools/sg/text_hershey_marker is written in an unsupported language. File is not indexed.
0001 // Copyright (C) 2010, Guy Barrand. All rights reserved.
0002 // See the file tools.license for terms.
0003
0004 #ifndef tools_sg_text_hershey_marker
0005 #define tools_sg_text_hershey_marker
0006
0007 #include "text_hershey"
0008
0009 namespace tools {
0010 namespace sg {
0011
0012 class text_hershey_marker : public text_hershey {
0013 TOOLS_NODE(text_hershey_marker,tools::sg::text_hershey_marker,text_hershey)
0014 public:
0015 virtual bool draw_in_frame_buffer() const {return true;}
0016
0017 virtual void render(render_action& a_action) {
0018 //Same logic as Inventor SoLightModel.model = BASE_COLOR.
0019 a_action.set_lighting(false);
0020 a_action.set_depth_test(false);
0021
0022 float x,y,z;
0023 a_action.projected_origin(x,y,z);
0024
0025 const state& state = a_action.state();
0026
0027 float sy = 2.0f*float(height.value())/float(state.m_wh); //in [-1,1]
0028
0029 float old_height = height.value();
0030 height.value_no_cmp(sy);
0031
0032 std::vector<float> segs;
0033 get_segments(segs); //must be after changing the height.
0034
0035 a_action.load_matrices_to_identity();
0036
0037 {tools::mat4f _mtx;
0038 _mtx.set_translate(x,y,0);
0039 if(state.m_ww) _mtx.mul_scale(float(state.m_wh)/float(state.m_ww),1,1);
0040 a_action.load_proj_matrix(_mtx);}
0041
0042 a_action.draw_vertex_array_xy(gl::lines(),segs);
0043
0044 a_action.load_matrices_from_state();
0045
0046 height.value_no_cmp(old_height);
0047
0048 a_action.set_depth_test(state.m_GL_DEPTH_TEST);
0049 a_action.set_lighting(a_action.state().m_GL_LIGHTING);
0050
0051 }
0052
0053 virtual void pick(pick_action& a_action) {
0054 float x,y,z;
0055 a_action.projected_origin(x,y,z);
0056
0057 const state& state = a_action.state();
0058
0059 float sy = 2.0f*float(height.value())/float(state.m_wh); //in [-1,1]
0060
0061 float old_height = height.value();
0062 height.value_no_cmp(sy);
0063
0064 std::vector<float> segs;
0065 get_segments(segs);
0066
0067 a_action.set_matrices_to_identity();
0068
0069 {tools::mat4f& _mtx = a_action.model_matrix();
0070 _mtx.set_translate(x,y,0);
0071 if(state.m_ww) _mtx.mul_scale(float(state.m_wh)/float(state.m_ww),1,1);}
0072
0073 a_action.add__lines_xy(*this,segs);
0074
0075 a_action.set_matrices_from_state();
0076
0077 height.value_no_cmp(old_height);
0078 }
0079
0080 virtual void bbox(bbox_action& a_action) {
0081 a_action.add_one_point(0,0,0);
0082 }
0083 public:
0084 text_hershey_marker()
0085 :parent()
0086 {
0087 height = 10; //in pixels
0088 }
0089 virtual ~text_hershey_marker(){}
0090 public:
0091 text_hershey_marker(const text_hershey_marker& a_from)
0092 :parent(a_from)
0093 {}
0094 text_hershey_marker& operator=(const text_hershey_marker& a_from){
0095 parent::operator=(a_from);
0096 return *this;
0097 }
0098 };
0099
0100 }}
0101
0102 #endif
