Developer Documentation

CartesianClippingNode.cc
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40 \*===========================================================================*/
41
42
43
44
45
46
47 //=============================================================================
48
49 #include "CartesianClippingNode.hh"
50
51 //=============================================================================
52
53 namespace ACG {
54 namespace SceneGraph {
55
56 //=============================================================================
57
58
59 CartesianClippingNode::CartesianClippingNode( BaseNode* _parent,
60 const std::string& _name )
61 : BaseNode( _parent, _name )
62 {
63 set_cursor( Vec3f( 0, 0, 0 ) );
64 enabled_ = NONE;
65 }
66
67 //-----------------------------------------------------------------------------
68
69
70 void
71 CartesianClippingNode::enter( GLState & _state, const DrawModes::DrawMode& /* _drawmode */ )
72 {
73 Vec3d eye = _state.eye();
74
75 if ( is_enabled( XY_PLANE ) )
76 {
77 GLdouble xy_plane[4];
78 if ( eye[2] > 0 )
79 {
80 xy_plane[0] = 0;
81 xy_plane[1] = 0;
82 xy_plane[2] = -1;
83 xy_plane[3] = cursor_[2];
84 }
85 else
86 {
87 xy_plane[0] = 0;
88 xy_plane[1] = 0;
89 xy_plane[2] = 1;
90 xy_plane[3] = -cursor_[2];
91 }
92
93 glClipPlane( GL_CLIP_PLANE0, xy_plane );
94 ACG::GLState::enable( GL_CLIP_PLANE0 );
95 }
96
97 if ( is_enabled( YZ_PLANE ) )
98 {
99 GLdouble yz_plane[4];
100 if ( eye[0] > 0 )
101 {
102 yz_plane[0] = -1;
103 yz_plane[1] = 0;
104 yz_plane[2] = 0;
105 yz_plane[3] = cursor_[0];
106 }
107 else
108 {
109 yz_plane[0] = 1;
110 yz_plane[1] = 0;
111 yz_plane[2] = 0;
112 yz_plane[3] = -cursor_[0];
113 }
114
115 glClipPlane( GL_CLIP_PLANE1, yz_plane );
116 ACG::GLState::enable( GL_CLIP_PLANE1 );
117 }
118
119 if ( is_enabled( XZ_PLANE ) )
120 {
121 GLdouble xz_plane[4];
122 if ( eye[1] > 0 )
123 {
124 xz_plane[0] = 0;
125 xz_plane[1] = -1;
126 xz_plane[2] = 0;
127 xz_plane[3] = cursor_[1];
128 }
129 else
130 {
131 xz_plane[0] = 0;
132 xz_plane[1] = 1;
133 xz_plane[2] = 0;
134 xz_plane[3] = -cursor_[1];
135 }
136
137 glClipPlane( GL_CLIP_PLANE2, xz_plane );
138 ACG::GLState::enable( GL_CLIP_PLANE2 );
139 }
140
141
142
143 }
144
145
146 //-----------------------------------------------------------------------------
147
148
149 void
150 CartesianClippingNode::leave( GLState & /* _state */ , const DrawModes::DrawMode& /* _drawmode */ )
151 {
152 ACG::GLState::disable( GL_CLIP_PLANE0 );
153 ACG::GLState::disable( GL_CLIP_PLANE1 );
154 ACG::GLState::disable( GL_CLIP_PLANE2 );
155 }
156
157
158 //-----------------------------------------------------------------------------
159
160
161 void
162 CartesianClippingNode::set_cursor( const Vec3f & _cursor )
163 {
164 cursor_ = _cursor;
165
166 }
167
168
169 //-----------------------------------------------------------------------------
170
171
172 const
173 Vec3f &
174 CartesianClippingNode::cursor() const
175 {
176 return cursor_;
177 }
178
179
180 //-----------------------------------------------------------------------------
181
182
183 void
184 CartesianClippingNode::set_enabled( Plane _plane )
185 {
186 enabled_ = _plane;
187 }
188
189
190 //-----------------------------------------------------------------------------
191
192
193 bool
194 CartesianClippingNode::is_enabled( Plane _plane ) const
195 {
196 return ( enabled_ == _plane );
197 }
198
199
200 //=============================================================================
201 } // namespace SceneGraph
202 } // namespace ACG
203 //=============================================================================
ACG::SceneGraph::CartesianClippingNode::cursor
const Vec3f & cursor() const
get position
Definition: CartesianClippingNode.cc:174
ACG::GLState
Definition: GLState.hh:213
ACG
Namespace providing different geometric functions concerning angles.
Definition: BaseObjectData.hh:68
ACG::SceneGraph::CartesianClippingNode::enter
void enter(GLState &_state, const DrawModes::DrawMode &_drawmode) override
begin clipping
Definition: CartesianClippingNode.cc:71
ACG::SceneGraph::ACG::GLState::disable
static void disable(GLenum _cap, bool _warnRemoved=true)
replaces glDisable, but supports locking
OpenMesh::VectorT
Definition: Vector11T.hh:83
SceneGraph
Definition: QtPrincipalAxisDialog.hh:67
ACG::Vec3f
VectorT< float, 3 > Vec3f
Definition: VectorT.hh:119
ACG::SceneGraph::CartesianClippingNode::set_cursor
void set_cursor(const Vec3f &_pos)
set position
Definition: CartesianClippingNode.cc:162
ACG::SceneGraph::CartesianClippingNode::leave
void leave(GLState &_state, const DrawModes::DrawMode &_drawmode) override
stop clipping
Definition: CartesianClippingNode.cc:150
ACG::SceneGraph::BaseNode
Definition: BaseNode.hh:104
ACG::SceneGraph::DrawModes::NONE
DrawMode NONE
not a valid draw mode
Definition: DrawModes.cc:71
ACG::SceneGraph::DrawModes::DrawMode
Specifies a DrawMode.
Definition: DrawModes.hh:288
ACG::SceneGraph::ACG::GLState::enable
static void enable(GLenum _cap, bool _warnRemoved=true)
replaces glEnable, but supports locking
ACG::GLState::eye
Vec3d eye() const
get eye point
Definition: GLState.cc:886