2 Copyright (C) 2001-2006, William Joseph.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #if !defined( INCLUDED_CURVE_H )
23 #define INCLUDED_CURVE_H
26 #include "selectable.h"
27 #include "renderable.h"
31 #include "math/curve.h"
32 #include "stream/stringstream.h"
33 #include "signal/signal.h"
34 #include "selectionlib.h"
38 class RenderableCurve : public OpenGLRenderable
41 std::vector<PointVertex> m_vertices;
42 void render( RenderStateFlags state ) const {
43 pointvertex_gl_array( &m_vertices.front() );
44 glDrawArrays( GL_LINE_STRIP, 0, GLsizei( m_vertices.size() ) );
48 inline void plotBasisFunction( std::size_t numSegments, int point, int degree ){
50 KnotVector_openUniform( knots, 4, degree );
52 globalOutputStream() << "plotBasisFunction point " << point << " of 4, knot vector:";
53 for ( Knots::iterator i = knots.begin(); i != knots.end(); ++i )
55 globalOutputStream() << " " << *i;
57 globalOutputStream() << "\n";
58 globalOutputStream() << "t=0 basis=" << BSpline_basis( knots, point, degree, 0.0 ) << "\n";
59 for ( std::size_t i = 1; i < numSegments; ++i )
61 double t = ( 1.0 / double(numSegments) ) * double(i);
62 globalOutputStream() << "t=" << t << " basis=" << BSpline_basis( knots, point, degree, t ) << "\n";
64 globalOutputStream() << "t=1 basis=" << BSpline_basis( knots, point, degree, 1.0 ) << "\n";
67 inline bool ControlPoints_parse( ControlPoints& controlPoints, const char* value ){
68 StringTokeniser tokeniser( value, " " );
71 if ( !string_parse_size( tokeniser.getToken(), size ) ) {
78 controlPoints.resize( size );
80 if ( !string_equal( tokeniser.getToken(), "(" ) ) {
83 for ( ControlPoints::iterator i = controlPoints.begin(); i != controlPoints.end(); ++i )
85 if ( !string_parse_float( tokeniser.getToken(), ( *i ).x() )
86 || !string_parse_float( tokeniser.getToken(), ( *i ).y() )
87 || !string_parse_float( tokeniser.getToken(), ( *i ).z() ) ) {
91 if ( !string_equal( tokeniser.getToken(), ")" ) ) {
97 inline void ControlPoints_write( const ControlPoints& controlPoints, StringOutputStream& value ){
98 value << Unsigned( controlPoints.size() ) << " (";
99 for ( ControlPoints::const_iterator i = controlPoints.begin(); i != controlPoints.end(); ++i )
101 value << " " << ( *i ).x() << " " << ( *i ).y() << " " << ( *i ).z() << " ";
106 inline void ControlPoint_testSelect( const Vector3& point, ObservedSelectable& selectable, Selector& selector, SelectionTest& test ){
107 SelectionIntersection best;
108 test.TestPoint( point, best );
109 if ( best.valid() ) {
110 Selector_add( selector, selectable, best );
114 class ControlPointTransform
116 const Matrix4& m_matrix;
118 ControlPointTransform( const Matrix4& matrix ) : m_matrix( matrix ){
120 void operator()( Vector3& point ) const {
121 matrix4_transform_point( m_matrix, point );
125 class ControlPointSnap
129 ControlPointSnap( float snap ) : m_snap( snap ){
131 void operator()( Vector3& point ) const {
132 vector3_snap( point, m_snap );
136 class ControlPointAdd
138 RenderablePointVector& m_points;
140 ControlPointAdd( RenderablePointVector& points ) : m_points( points ){
142 void operator()( const Vector3& point ) const {
143 m_points.push_back( PointVertex( vertex3f_for_vector3( point ), colour_vertex ) );
147 class ControlPointAddSelected
149 RenderablePointVector& m_points;
151 ControlPointAddSelected( RenderablePointVector& points ) : m_points( points ){
153 void operator()( const Vector3& point ) const {
154 m_points.push_back( PointVertex( vertex3f_for_vector3( point ), colour_selected ) );
161 Shader* m_controlsShader;
162 Shader* m_selectedShader;
165 inline void ControlPoints_write( ControlPoints& controlPoints, const char* key, Entity& entity ){
166 StringOutputStream value( 256 );
167 if ( !controlPoints.empty() ) {
168 ControlPoints_write( controlPoints, value );
170 entity.setKeyValue( key, value.c_str() );
175 SelectionChangeCallback m_selectionChanged;
176 ControlPoints& m_controlPoints;
177 typedef Array<ObservedSelectable> Selectables;
178 Selectables m_selectables;
180 RenderablePointVector m_controlsRender;
181 mutable RenderablePointVector m_selectedRender;
184 typedef Static<CurveEditType> Type;
186 CurveEdit( ControlPoints& controlPoints, const SelectionChangeCallback& selectionChanged ) :
187 m_selectionChanged( selectionChanged ),
188 m_controlPoints( controlPoints ),
189 m_controlsRender( GL_POINTS ),
190 m_selectedRender( GL_POINTS ){
193 template<typename Functor>
194 const Functor& forEachSelected( const Functor& functor ){
195 ASSERT_MESSAGE( m_controlPoints.size() == m_selectables.size(), "curve instance mismatch" );
196 ControlPoints::iterator p = m_controlPoints.begin();
197 for ( Selectables::iterator i = m_selectables.begin(); i != m_selectables.end(); ++i, ++p )
199 if ( ( *i ).isSelected() ) {
205 template<typename Functor>
206 const Functor& forEachSelected( const Functor& functor ) const {
207 ASSERT_MESSAGE( m_controlPoints.size() == m_selectables.size(), "curve instance mismatch" );
208 ControlPoints::const_iterator p = m_controlPoints.begin();
209 for ( Selectables::const_iterator i = m_selectables.begin(); i != m_selectables.end(); ++i, ++p )
211 if ( ( *i ).isSelected() ) {
217 template<typename Functor>
218 const Functor& forEach( const Functor& functor ) const {
219 for ( ControlPoints::const_iterator i = m_controlPoints.begin(); i != m_controlPoints.end(); ++i )
226 void testSelect( Selector& selector, SelectionTest& test ){
227 ASSERT_MESSAGE( m_controlPoints.size() == m_selectables.size(), "curve instance mismatch" );
228 ControlPoints::const_iterator p = m_controlPoints.begin();
229 for ( Selectables::iterator i = m_selectables.begin(); i != m_selectables.end(); ++i, ++p )
231 ControlPoint_testSelect( *p, *i, selector, test );
235 bool isSelected() const {
236 for ( Selectables::const_iterator i = m_selectables.begin(); i != m_selectables.end(); ++i )
238 if ( ( *i ).isSelected() ) {
244 void setSelected( bool selected ){
245 for ( Selectables::iterator i = m_selectables.begin(); i != m_selectables.end(); ++i )
247 ( *i ).setSelected( selected );
251 void write( const char* key, Entity& entity ){
252 ControlPoints_write( m_controlPoints, key, entity );
255 void transform( const Matrix4& matrix ){
256 forEachSelected( ControlPointTransform( matrix ) );
258 void snapto( float snap ){
259 forEachSelected( ControlPointSnap( snap ) );
262 void updateSelected() const {
263 m_selectedRender.clear();
264 forEachSelected( ControlPointAddSelected( m_selectedRender ) );
267 void renderComponents( Renderer& renderer, const VolumeTest& volume, const Matrix4& localToWorld ) const {
268 renderer.SetState( Type::instance().m_controlsShader, Renderer::eWireframeOnly );
269 renderer.SetState( Type::instance().m_controlsShader, Renderer::eFullMaterials );
270 renderer.addRenderable( m_controlsRender, localToWorld );
273 void renderComponentsSelected( Renderer& renderer, const VolumeTest& volume, const Matrix4& localToWorld ) const {
275 if ( !m_selectedRender.empty() ) {
276 renderer.Highlight( Renderer::ePrimitive, false );
277 renderer.SetState( Type::instance().m_selectedShader, Renderer::eWireframeOnly );
278 renderer.SetState( Type::instance().m_selectedShader, Renderer::eFullMaterials );
279 renderer.addRenderable( m_selectedRender, localToWorld );
284 m_selectables.resize( m_controlPoints.size(), m_selectionChanged );
286 m_controlsRender.clear();
287 m_controlsRender.reserve( m_controlPoints.size() );
288 forEach( ControlPointAdd( m_controlsRender ) );
290 m_selectedRender.reserve( m_controlPoints.size() );
292 typedef MemberCaller<CurveEdit, &CurveEdit::curveChanged> CurveChangedCaller;
297 const int NURBS_degree = 3;
301 Signal0 m_curveChanged;
302 Callback m_boundsChanged;
304 ControlPoints m_controlPoints;
305 ControlPoints m_controlPointsTransformed;
306 NURBSWeights m_weights;
308 RenderableCurve m_renderCurve;
311 NURBSCurve( const Callback& boundsChanged ) : m_boundsChanged( boundsChanged ){
314 SignalHandlerId connect( const SignalHandler& curveChanged ){
316 return m_curveChanged.connectLast( curveChanged );
318 void disconnect( SignalHandlerId id ){
319 m_curveChanged.disconnect( id );
326 if ( !m_controlPointsTransformed.empty() ) {
327 const std::size_t numSegments = ( m_controlPointsTransformed.size() - 1 ) * 16;
328 m_renderCurve.m_vertices.resize( numSegments + 1 );
329 m_renderCurve.m_vertices[0].vertex = vertex3f_for_vector3( m_controlPointsTransformed[0] );
330 for ( std::size_t i = 1; i < numSegments; ++i )
332 m_renderCurve.m_vertices[i].vertex = vertex3f_for_vector3( NURBS_evaluate( m_controlPointsTransformed, m_weights, m_knots, NURBS_degree, ( 1.0 / double(numSegments) ) * double(i) ) );
334 m_renderCurve.m_vertices[numSegments].vertex = vertex3f_for_vector3( m_controlPointsTransformed[m_controlPointsTransformed.size() - 1] );
338 m_renderCurve.m_vertices.clear();
346 for ( ControlPoints::iterator i = m_controlPointsTransformed.begin(); i != m_controlPointsTransformed.end(); ++i )
348 aabb_extend_by_point_safe( m_bounds, ( *i ) );
355 bool parseCurve( const char* value ){
356 if ( !ControlPoints_parse( m_controlPoints, value ) ) {
360 m_weights.resize( m_controlPoints.size() );
361 for ( NURBSWeights::iterator i = m_weights.begin(); i != m_weights.end(); ++i )
366 KnotVector_openUniform( m_knots, m_controlPoints.size(), NURBS_degree );
368 //plotBasisFunction(8, 0, NURBS_degree);
373 void curveChanged( const char* value ){
374 if ( string_empty( value ) || !parseCurve( value ) ) {
375 m_controlPoints.resize( 0 );
377 m_weights.resize( 0 );
379 m_controlPointsTransformed = m_controlPoints;
382 typedef MemberCaller1<NURBSCurve, const char*, &NURBSCurve::curveChanged> CurveChangedCaller;
385 class CatmullRomSpline
387 Signal0 m_curveChanged;
388 Callback m_boundsChanged;
390 ControlPoints m_controlPoints;
391 ControlPoints m_controlPointsTransformed;
392 RenderableCurve m_renderCurve;
395 CatmullRomSpline( const Callback& boundsChanged ) : m_boundsChanged( boundsChanged ){
398 SignalHandlerId connect( const SignalHandler& curveChanged ){
400 return m_curveChanged.connectLast( curveChanged );
402 void disconnect( SignalHandlerId id ){
403 m_curveChanged.disconnect( id );
410 if ( !m_controlPointsTransformed.empty() ) {
411 const std::size_t numSegments = ( m_controlPointsTransformed.size() - 1 ) * 16;
412 m_renderCurve.m_vertices.resize( numSegments + 1 );
413 m_renderCurve.m_vertices[0].vertex = vertex3f_for_vector3( m_controlPointsTransformed[0] );
414 for ( std::size_t i = 1; i < numSegments; ++i )
416 m_renderCurve.m_vertices[i].vertex = vertex3f_for_vector3( CatmullRom_evaluate( m_controlPointsTransformed, ( 1.0 / double(numSegments) ) * double(i) ) );
418 m_renderCurve.m_vertices[numSegments].vertex = vertex3f_for_vector3( m_controlPointsTransformed[m_controlPointsTransformed.size() - 1] );
422 m_renderCurve.m_vertices.clear();
426 bool parseCurve( const char* value ){
427 return ControlPoints_parse( m_controlPoints, value );
434 for ( ControlPoints::iterator i = m_controlPointsTransformed.begin(); i != m_controlPointsTransformed.end(); ++i )
436 aabb_extend_by_point_safe( m_bounds, ( *i ) );
443 void curveChanged( const char* value ){
444 if ( string_empty( value ) || !parseCurve( value ) ) {
445 m_controlPoints.resize( 0 );
447 m_controlPointsTransformed = m_controlPoints;
450 typedef MemberCaller1<CatmullRomSpline, const char*, &CatmullRomSpline::curveChanged> CurveChangedCaller;
453 const char* const curve_Nurbs = "curve_Nurbs";
454 const char* const curve_CatmullRomSpline = "curve_CatmullRomSpline";