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StencilRefNode.cc
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49 
50 
51 
52 
53 //=============================================================================
54 //
55 // CLASS StencilRefNode - IMPLEMENTATION
56 //
57 //=============================================================================
58 
59 
60 //== INCLUDES =================================================================
61 
62 
63 #include "StencilRefNode.hh"
64 
65 
66 //== NAMESPACES ===============================================================
67 
68 
69 namespace ACG {
70 namespace SceneGraph {
71 
72 
73 //== IMPLEMENTATION ==========================================================
74 
75 
77  const std::string& _name)
78  : BaseNode(_parent, _name),
79  reference_ (0)
80 {}
81 
82 //----------------------------------------------------------------------------
83 
85  BaseNode* _child,
86  const std::string& _name)
87  : BaseNode(_parent, _child, _name),
88  reference_ (0)
89 {}
90 
91 //----------------------------------------------------------------------------
92 
93 void StencilRefNode::enter(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/)
94 {
95  if(visible()) {
96  glPushAttrib (GL_STENCIL_BUFFER_BIT);
97  glStencilFunc (GL_ALWAYS, reference_, ~0);
98  glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE);
99  }
100 }
101 
102 //----------------------------------------------------------------------------
103 
104 void StencilRefNode::leave(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/)
105 {
106  if(visible()) {
107  glPopAttrib ();
108  }
109 }
110 
111 //----------------------------------------------------------------------------
112 
113 void StencilRefNode::enterPick(GLState& /*_state*/ , PickTarget /*_target*/, const DrawModes::DrawMode& /*_drawMode*/ ) {
114 
115 }
116 
117 //----------------------------------------------------------------------------
118 
119 void StencilRefNode::leavePick(GLState& /*_state*/, PickTarget /*_target*/, const DrawModes::DrawMode& /*_drawMode*/ ) {
120 }
121 
123 {
124  reference_ = _ref;
125 }
126 
127 //=============================================================================
128 } // namespace SceneGraph
129 } // namespace ACG
130 //=============================================================================
131 
void enterPick(GLState &_state, PickTarget _target, const DrawModes::DrawMode &_drawMode)
Do nothing in picking.
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
void leavePick(GLState &_state, PickTarget _target, const DrawModes::DrawMode &_drawMode)
Do nothing in picking.
PickTarget
What target to use for picking.
Definition: BaseNode.hh:99
bool visible()
Is node visible (status == Active)?
Definition: MeshNode2T.cc:385
void setReference(GLuint _ref)
set stencil reference number
void enter(GLState &_state, const DrawModes::DrawMode &_drawmode)
set stencil reference for all z-pass pixels
StencilRefNode(BaseNode *_parent=0, const std::string &_name="<StencilRefNode>")
Default constructor.
void leave(GLState &_state, const DrawModes::DrawMode &_drawmode)
restores original stencil behavior