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LightSourceNode.hh
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48 \*===========================================================================*/
49
50
51
52
53 //=============================================================================
54 //
55 // CLASS LightSourceNode
56 //
57 //=============================================================================
58
59 #ifndef ACG_LIGHTSOURCE_NODE_HH
60 #define ACG_LIGHTSOURCE_NODE_HH
61
62
63 //== INCLUDES =================================================================
64
65 #include "BaseNode.hh"
66 #include "../GL/gl.hh"
67 #include <string>
68 #include <vector>
69
70
71 //== NAMESPACES ===============================================================
72
73 namespace ACG {
74 namespace SceneGraph {
75
76
77 //== CLASS DEFINITION =========================================================
78
79
91 class ACGDLLEXPORT LightSourceNode : public BaseNode
92 {
93
95 struct LightSource
96 {
97 //default Constructor
98 LightSource()
99 {
100 // set OpenGL defaults
101 enabled = false;
102 fixedPosition = false;
103
104 ambientColor = Vec4f(0.1f,0.1f,0.1f,1.0f);
105 diffuseColor = Vec4f(1.0f,1.0f,1.0f,1.0f);
106 specularColor = Vec4f(1.0f,1.0f,1.0f,1.0f);
107 position = Vec4f(0.0f,0.0f,1.0f,0.0f);
108 realPosition = Vec4f(0.0f,0.0f,1.0f,0.0f);
109 spotDirection = Vec3f(0.0f,0.0f,-1.0f);
110 spotExponent = 0;
111 spotCutoff = 180;
112
113 constantAttenuation = 1;
114 linearAttenuation = 0;
115 quadraticAttenuation = 0;
116 }
117
118 bool enabled;
119 bool fixedPosition;
120 Vec4f ambientColor;
121 Vec4f diffuseColor;
122 Vec4f specularColor;
123 Vec4f position;
124 Vec4f realPosition;
125 Vec3f spotDirection;
126 float spotExponent;
127 float spotCutoff;
128 float constantAttenuation;
129 float linearAttenuation;
130 float quadraticAttenuation;
131 };
132
133
134 public:
135
137 LightSourceNode( BaseNode* _parent = 0,
138 const std::string& _name = "<LightSourceNode>");
139
141 virtual ~LightSourceNode() {}
142
143
144 ACG_CLASSNAME(LightSourceNode);
145
147 void enter(GLState& _state, const DrawModes::DrawMode& _drawmode);
149 void leave(GLState& _state, const DrawModes::DrawMode& _drawmode);
150
152 void enable(GLenum _nr)
153 { lights_[gl2index(_nr)].enabled = true; }
154
156 void disable(GLenum _nr)
157 { lights_[gl2index(_nr)].enabled = false; }
158
160 void set_position(GLenum _nr, Vec4f _pos)
161 { lights_[gl2index(_nr)].position = _pos; }
162
164 void set_position(GLenum _nr, Vec3f _pos)
165 { set_position(_nr, Vec4f(_pos[0], _pos[1], _pos[2], 1)); }
166
168 void set_direction(GLenum _nr, Vec3f _pos)
169 { set_position(_nr, Vec4f(_pos[0], _pos[1], _pos[2], 0)); }
170
172 void set_ambient_color( GLenum _nr, Vec4f _color)
173 { lights_[gl2index(_nr)].ambientColor = _color; }
174
176 void set_diffuse_color( GLenum _nr, Vec4f _color)
177 { lights_[gl2index(_nr)].diffuseColor = _color; }
178
180 void set_specular_color( GLenum _nr, Vec4f _color)
181 { lights_[gl2index(_nr)].specularColor = _color; }
182
184 void fixed_position(GLenum _nr, bool _state)
185 { lights_[gl2index(_nr)].fixedPosition = _state; }
186
187 private:
188
190 int gl2index( GLenum _nr)
191 { return( _nr - GL_LIGHT0); }
192
194 GLenum index2gl( int _nr)
195 { return( _nr + GL_LIGHT0); }
196
198 void set_parameters(GLenum _index, LightSource& _light);
199
201 void get_parameters(GLenum _index, LightSource& _light);
202
203 private:
204
206 std::vector<LightSource> lights_;
207
209 std::vector<LightSource> lightsSave_;
210 };
211
212
213 //=============================================================================
214 } // namespace SceneGraph
215 } // namespace ACG
216 //=============================================================================
217 #endif // ACG_LIGHTSOURCE_NODE_HH defined
218 //=============================================================================
219
ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ACG::SceneGraph::LightSourceNode::LightSource
Structure to hold options for one LightSource.
Definition: LightSourceNode.hh:95
ACG::SceneGraph::BaseNode
Definition: BaseNode.hh:135
ACG::SceneGraph::LightSourceNode::set_direction
void set_direction(GLenum _nr, Vec3f _pos)
set direction for directional LightSource
Definition: LightSourceNode.hh:168
ACG::SceneGraph::LightSourceNode::set_ambient_color
void set_ambient_color(GLenum _nr, Vec4f _color)
set Ambient color for LightSource _nr
Definition: LightSourceNode.hh:172
ACG::Vec4f
VectorT< float, 4 > Vec4f
Definition: VectorT.hh:144
ACG::GLState
Definition: GLState.hh:220
ACG::SceneGraph::LightSourceNode::set_position
void set_position(GLenum _nr, Vec4f _pos)
set position ( _pos = 1) or direction ( _pos = 0) of LightSource
Definition: LightSourceNode.hh:160
ACG::SceneGraph::LightSourceNode::fixed_position
void fixed_position(GLenum _nr, bool _state)
make LightSource fixed or moveable with ModelViewMatrix
Definition: LightSourceNode.hh:184
ACG::SceneGraph::DrawModes::DrawMode
Specifies a DrawMode.
Definition: DrawModes.hh:294
ACG::SceneGraph::LightSourceNode::disable
void disable(GLenum _nr)
disable LightSource _nr
Definition: LightSourceNode.hh:156
ACG::SceneGraph::LightSourceNode::set_position
void set_position(GLenum _nr, Vec3f _pos)
set position for Point-LightSource
Definition: LightSourceNode.hh:164
ACG::SceneGraph::LightSourceNode::enable
void enable(GLenum _nr)
enable LightSource _nr
Definition: LightSourceNode.hh:152
ACG::Vec3f
VectorT< float, 3 > Vec3f
Definition: VectorT.hh:125
OpenMesh::VectorT
Definition: Vector11T.hh:83
ACG::SceneGraph::LightSourceNode::index2gl
GLenum index2gl(int _nr)
return GL_LIGHT* for light _nr
Definition: LightSourceNode.hh:194
ACG::SceneGraph::LightSourceNode::lights_
std::vector< LightSource > lights_
store LightSources of this node
Definition: LightSourceNode.hh:206
ACG::SceneGraph::LightSourceNode::~LightSourceNode
virtual ~LightSourceNode()
Destructor.
Definition: LightSourceNode.hh:141
ACG::SceneGraph::LightSource
Structure to hold options for one LightSource.
Definition: LightNode.hh:91
ACG::SceneGraph::LightSourceNode::gl2index
int gl2index(GLenum _nr)
return index in vector for GL_LIGHT*
Definition: LightSourceNode.hh:190
ACG::SceneGraph::LightSourceNode::set_specular_color
void set_specular_color(GLenum _nr, Vec4f _color)
set Specular color for LightSource _nr
Definition: LightSourceNode.hh:180
LightSource
ACG::SceneGraph::LightSource LightSource
Simple Name for the LightSource.
Definition: LightTypes.hh:72
ACG::SceneGraph::LightSourceNode::lightsSave_
std::vector< LightSource > lightsSave_
save old LightSources
Definition: LightSourceNode.hh:209
ACG::SceneGraph::LightSourceNode::set_diffuse_color
void set_diffuse_color(GLenum _nr, Vec4f _color)
set Diffuse color for LightSource _nr
Definition: LightSourceNode.hh:176
ACG::SceneGraph::LightSourceNode
Definition: LightSourceNode.hh:91