1 // Copyright (C) 2013 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #include "CurveCreator_Utils.h"
22 #include <GEOMUtils.hxx>
27 #include <TopoDS_Vertex.hxx>
28 #include <TopoDS_Wire.hxx>
29 #include <TopoDS_Edge.hxx>
31 #include <AIS_ListOfInteractive.hxx>
32 #include <AIS_ListIteratorOfListOfInteractive.hxx>
33 #include <AIS_Shape.hxx>
34 #include <AIS_Point.hxx>
35 #include <AIS_Line.hxx>
36 #include <AIS_Trihedron.hxx>
38 #include <Geom_Point.hxx>
39 #include <Geom_BSplineCurve.hxx>
40 #include <Geom_Line.hxx>
42 #include <TopExp_Explorer.hxx>
43 #include <BRep_Tool.hxx>
44 #include <GeomAPI_ProjectPointOnCurve.hxx>
45 #include <SelectMgr_EntityOwner.hxx>
47 #include <ProjLib.hxx>
50 const double LOCAL_SELECTION_TOLERANCE = 0.0001;
51 const int SCENE_PIXEL_TOLERANCE = 10;
53 //=======================================================================
54 // function : ConvertClickToPoint()
55 // purpose : Returns the point clicked in 3D view
56 //=======================================================================
57 void CurveCreator_Utils::ConvertPointToClick( const gp_Pnt& thePoint,
58 Handle(V3d_View) theView,
61 theView->Convert(thePoint.X(), thePoint.Y(), thePoint.Z(), x, y );
65 //=======================================================================
66 // function : ConvertClickToPoint()
67 // purpose : Returns the point clicked in 3D view
68 //=======================================================================
69 gp_Pnt CurveCreator_Utils::ConvertClickToPoint( int x, int y, Handle(V3d_View) aView )
71 return GEOMUtils::ConvertClickToPoint( x, y, aView );
73 V3d_Coordinate XEye, YEye, ZEye, XAt, YAt, ZAt;
74 aView->Eye( XEye, YEye, ZEye );
76 aView->At( XAt, YAt, ZAt );
77 gp_Pnt EyePoint( XEye, YEye, ZEye );
78 gp_Pnt AtPoint( XAt, YAt, ZAt );
80 gp_Vec EyeVector( EyePoint, AtPoint );
81 gp_Dir EyeDir( EyeVector );
83 gp_Pln PlaneOfTheView = gp_Pln( AtPoint, EyeDir );
84 Standard_Real X, Y, Z;
85 aView->Convert( x, y, X, Y, Z );
86 gp_Pnt ConvertedPoint( X, Y, Z );
88 gp_Pnt2d ConvertedPointOnPlane = ProjLib::Project( PlaneOfTheView, ConvertedPoint );
89 gp_Pnt ResultPoint = ElSLib::Value( ConvertedPointOnPlane.X(), ConvertedPointOnPlane.Y(), PlaneOfTheView );
94 //=======================================================================
95 // function : setLocalPointContext
96 // purpose : Open/close the viewer local context
97 //=======================================================================
98 void CurveCreator_Utils::setLocalPointContext(
99 Handle(AIS_InteractiveContext) theContext,
106 // Open local context if there is no one
107 if ( !theContext->HasOpenedContext() ) {
108 theContext->ClearCurrents( false );
109 theContext->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
111 AIS_ListOfInteractive aList;
112 theContext->DisplayedObjects( aList );
114 for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
117 for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
119 Handle(AIS_InteractiveObject) anAIS = it.Value();
120 if ( !anAIS.IsNull() )
122 if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
124 theContext->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
125 theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_WIRE ) );
126 //theContext->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_VERTEX ) );
128 else if ( anAIS->DynamicType() != STANDARD_TYPE(AIS_Trihedron) )
130 theContext->Load( anAIS, -1/*selection mode*/, false/*allow decomposition*/ );
131 theContext->Activate( anAIS, TopAbs_VERTEX );
138 if ( theContext->HasOpenedContext() )
139 theContext->CloseAllContexts();
143 bool CurveCreator_Utils::getNeighbourPoints( Handle(AIS_InteractiveContext) theContext,
144 Handle(V3d_View) theView,
145 const int theX, const int theY,
146 gp_Pnt& thePoint, gp_Pnt& thePoint1,
149 bool isFoundPoint = false;
150 if ( theContext.IsNull() )
153 for ( theContext->InitSelected(); theContext->MoreSelected() && !isFoundPoint;
154 theContext->NextSelected() ) {
155 TopoDS_Shape aTShape = theContext->SelectedShape();
156 if ( !aTShape.IsNull() && aTShape.ShapeType() == TopAbs_VERTEX )
159 Handle(SelectMgr_EntityOwner) anOwner = theContext->SelectedOwner();
160 if ( anOwner.IsNull() )
162 const TopLoc_Location& aLocation = anOwner->Location();
163 Handle(AIS_InteractiveObject) anAIS =
164 Handle(AIS_InteractiveObject)::DownCast( anOwner->Selectable() );
165 isFoundPoint = CurveCreator_Utils::pointOnObject( theView, anAIS, theX, theY, thePoint,
166 thePoint1, thePoint2 );
172 bool CurveCreator_Utils::pointOnObject( Handle(V3d_View) theView,
173 Handle(AIS_InteractiveObject) theObject,
174 const int theX, const int theY,
176 gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
178 bool isFound = false;
180 if ( theObject.IsNull() || theView.IsNull() )
184 Standard_Real aParameter;
186 Handle(AIS_Line) aLine = Handle(AIS_Line)::DownCast( theObject );
187 if ( !aLine.IsNull() ) {
188 const Handle(Geom_Line) aGLine = aLine->Line();
189 isFound = hasProjectPointOnCurve( theView, theX, theY, aGLine, aParameter );
191 aPoint = aGLine->Value( aParameter );
193 Handle(Geom_Point) aPStart;
194 Handle(Geom_Point) aPEnd;
195 aLine->Points( aPStart, aPEnd );
196 aPnt1 = aPStart->Pnt();
197 aPnt2 = aPEnd->Pnt();
199 // in case of Geom line a projection is performed to the infinite line,
200 // so it is necessary to bound it by the line size
202 aLineBox.Set( aPnt1, gp_Vec( aPnt1, aPnt2 ) );
203 isFound = !aLineBox.IsOut( aPoint );
207 Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
208 if ( !aShape.IsNull() ) {
209 const TopoDS_Wire& aWire = TopoDS::Wire( aShape->Shape() );
210 if ( !aWire.IsNull() ) {
211 TopExp_Explorer anExp( aWire, TopAbs_EDGE );
212 for ( ; anExp.More(); anExp.Next())
214 const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
215 if ( !anEdge.IsNull() ) {
216 Standard_Real aFirst, aLast;
217 Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
219 if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
220 Handle(Geom_BSplineCurve) aBSplineCurve = Handle(Geom_BSplineCurve)::DownCast( aCurve );
221 if ( !aBSplineCurve.IsNull() ) {
222 isFound = hasProjectPointOnCurve( theView, theX, theY, aCurve, aParameter );
224 aPoint = aBSplineCurve->Value( aParameter );
225 Standard_Integer anI1, anI2;
226 aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
228 aPnt1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
229 aPnt2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
246 bool CurveCreator_Utils::hasProjectPointOnCurve( Handle(V3d_View) theView,
247 const int theX, const int theY,
248 const Handle(Geom_Curve)& theCurve,
249 Standard_Real& theParameter )
251 bool isFound = false;
252 if ( theView.IsNull() )
255 gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, theView );
257 GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
258 Standard_Integer aNbPoint = aProj.NbPoints();
260 for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
261 gp_Pnt aNewPoint = aProj.Point( j );
262 theParameter = aProj.Parameter( j );
265 CurveCreator_Utils::ConvertPointToClick( aNewPoint, theView, aX, anY );
267 int aXDelta = abs( aX - theX );
268 int anYDelta = abs( anY - theY );
269 isFound = aXDelta < SCENE_PIXEL_TOLERANCE && anYDelta < SCENE_PIXEL_TOLERANCE;