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SceneGraph.cc
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50 
51 
52 
53 //=============================================================================
54 //
55 // CLASS SceneGraph - IMPLEMENTATION
56 //
57 //=============================================================================
58 
59 //== INCLUDES =================================================================
60 
61 
63 
64 
65 //== NAMESPACES ==============================================================
66 
67 namespace ACG {
68 namespace SceneGraph {
69 
70 
71 //== IMPLEMENTATION ==========================================================
72 
83 BaseNode* find_node(BaseNode* _root, unsigned int _node_idx)
84 {
85  FindNodeAction action(_node_idx);
86  traverse(_root, action);
87  return action.node_ptr();
88 }
89 
90 
91 //----------------------------------------------------------------------------
92 
99 BaseNode* find_hidden_node(BaseNode* _root, unsigned int _node_idx)
100 {
101  FindNodeAction action(_node_idx);
102  traverse_all(_root, action);
103  return action.node_ptr();
104 }
105 
106 
107 //----------------------------------------------------------------------------
108 
109 
111 {
112  // If picking is disabled for the given Node, return here
113  // As this is not a failure return true;
114  if ( !_node->pickingEnabled() )
115  return true;
116 
117  ACG::GLState::disable(GL_LIGHTING);
118  ACG::GLState::disable(GL_DITHER);
119  ACG::GLState::shadeModel(GL_FLAT);
120 
121  state_.pick_push_name ((GLuint) _node->id());
122 
123  _node->pick(state_, pickTarget_);
124 
125  state_.pick_pop_name ();
126  return true;
127 }
128 
129 bool PickAction::operator()(BaseNode* _node, GLState& /*_state*/) {
130  return operator()(_node);
131 }
132 
133 
134 //=============================================================================
135 } // namespace SceneGraph
136 } // namespace ACG
137 //=============================================================================
bool operator()(BaseNode *_node)
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
static void disable(GLenum _cap)
replaces glDisable, but supports locking
static void shadeModel(GLenum _mode)
replaces glShadeModel, supports locking
virtual void pick(GLState &, PickTarget)
Definition: MeshNode2T.cc:230
BaseNode * node_ptr()
Get the pointer of the node (is 0 if node was not found)
Definition: SceneGraph.hh:548
void pick_push_name(unsigned int _idx)
creates a new name the stack (like glPushName())
Definition: GLState.cc:1073
BaseNode * find_hidden_node(BaseNode *_root, unsigned int _node_idx)
Find a node in the scene graph.
Definition: SceneGraph.cc:99
void traverse_all(BaseNode *_node, Action &_action)
Definition: SceneGraph.hh:208
BaseNode * find_node(BaseNode *_root, unsigned int _node_idx)
Find a node in the scene graph.
Definition: SceneGraph.cc:83
void traverse(BaseNode *_node, Action &_action)
Definition: SceneGraph.hh:143
void pick_pop_name()
pops the current name from the stack (like glPopName())
Definition: GLState.cc:1080