| 1 | // Created on: 2011-10-20 |
| 2 | // Created by: Roman KOZLOV |
| 3 | // Copyright (c) 2011-2014 OPEN CASCADE SAS |
| 4 | // |
| 5 | // This file is part of Open CASCADE Technology software library. |
| 6 | // |
| 7 | // This library is free software; you can redistribute it and/or modify it under |
| 8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 9 | // by the Free Software Foundation, with special exception defined in the file |
| 10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 11 | // distribution for complete text of the license and disclaimer of any warranty. |
| 12 | // |
| 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. |
| 15 | |
| 16 | #include <AIS_Shape.hxx> |
| 17 | #include <BRepBndLib.hxx> |
| 18 | #include <IVtkOCC_SelectableObject.hxx> |
| 19 | #include <Select3D_SensitiveBox.hxx> |
| 20 | #include <SelectMgr_Selection.hxx> |
| 21 | #include <Standard_ErrorHandler.hxx> |
| 22 | #include <StdSelect_BRepOwner.hxx> |
| 23 | #include <StdSelect_BRepSelectionTool.hxx> |
| 24 | #include <TopoDS_Iterator.hxx> |
| 25 | |
| 26 | IMPLEMENT_STANDARD_RTTIEXT(IVtkOCC_SelectableObject,SelectMgr_SelectableObject) |
| 27 | |
| 28 | // Handle implementation |
| 29 | |
| 30 | |
| 31 | //============================================================================ |
| 32 | // Method: Constructor |
| 33 | // Purpose: Constructs a selectable object initalized by the given shape |
| 34 | //============================================================================ |
| 35 | IVtkOCC_SelectableObject::IVtkOCC_SelectableObject (const IVtkOCC_Shape::Handle& theShape) |
| 36 | : SelectMgr_SelectableObject (PrsMgr_TOP_AllView), |
| 37 | myShape (theShape) |
| 38 | { |
| 39 | if (!myShape.IsNull()) |
| 40 | { |
| 41 | myShape->SetSelectableObject (this); |
| 42 | } |
| 43 | |
| 44 | // Minor stuff - but it facilitates usage of OCCT selection |
| 45 | // classes dealing with deflection, see ComputeSelection() below |
| 46 | myOCCTDrawer = new Prs3d_Drawer(); |
| 47 | } |
| 48 | |
| 49 | //============================================================================ |
| 50 | // Method: Constructor |
| 51 | // Purpose: Constructs uninitialized selectable object. |
| 52 | // setShape() should be called later. |
| 53 | //============================================================================ |
| 54 | IVtkOCC_SelectableObject::IVtkOCC_SelectableObject() |
| 55 | : SelectMgr_SelectableObject (PrsMgr_TOP_AllView), |
| 56 | myShape (0) |
| 57 | { } |
| 58 | |
| 59 | //============================================================================ |
| 60 | // Method: Destructor |
| 61 | // Purpose: |
| 62 | //============================================================================ |
| 63 | IVtkOCC_SelectableObject::~IVtkOCC_SelectableObject() |
| 64 | { } |
| 65 | |
| 66 | //============================================================================ |
| 67 | // Method: SetShape |
| 68 | // Purpose: Sets the selectable shape |
| 69 | //============================================================================ |
| 70 | void IVtkOCC_SelectableObject::SetShape (const IVtkOCC_Shape::Handle& theShape) |
| 71 | { |
| 72 | myShape = theShape; |
| 73 | if (! myShape.IsNull()) |
| 74 | { |
| 75 | myShape->SetSelectableObject (this); |
| 76 | } |
| 77 | |
| 78 | // Shape has changed -> Clear all internal data |
| 79 | myBndBox.SetVoid(); |
| 80 | myselections.Clear(); |
| 81 | } |
| 82 | |
| 83 | //============================================================================ |
| 84 | // Method: ComputeSelection |
| 85 | // Purpose: Internal method, computes selection data for viewer selector |
| 86 | //============================================================================ |
| 87 | void IVtkOCC_SelectableObject::ComputeSelection (const Handle(SelectMgr_Selection)& theSelection, |
| 88 | const Standard_Integer theMode) |
| 89 | { |
| 90 | if (myShape.IsNull()) |
| 91 | { |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | TopoDS_Shape anOcctShape = myShape->GetShape(); |
| 96 | |
| 97 | if (anOcctShape.ShapeType() == TopAbs_COMPOUND && anOcctShape.NbChildren() == 0) |
| 98 | { |
| 99 | // Shape empty -> go away |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | TopAbs_ShapeEnum aTypeOfSel = AIS_Shape::SelectionType (theMode); |
| 104 | |
| 105 | Standard_Real aDeflection = myOCCTDrawer->MaximalChordialDeviation(); |
| 106 | if (myOCCTDrawer->TypeOfDeflection() == Aspect_TOD_RELATIVE) |
| 107 | { |
| 108 | Bnd_Box aBndBox; |
| 109 | BRepBndLib::Add (anOcctShape, aBndBox); |
| 110 | if (!aBndBox.IsVoid()) |
| 111 | { |
| 112 | Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax; |
| 113 | aBndBox.Get (aXmin, aYmin, aZmin, aXmax, aYmax, aZmax); |
| 114 | aDeflection = Max (aXmax - aXmin, Max (aYmax - aYmin, aZmax - aZmin)) * |
| 115 | myOCCTDrawer->DeviationCoefficient(); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | // Assume the shape has been displayed already -> triangulation should exist |
| 120 | Standard_Boolean isAutoTriangulation = Standard_False; |
| 121 | |
| 122 | try |
| 123 | { |
| 124 | OCC_CATCH_SIGNALS |
| 125 | StdSelect_BRepSelectionTool::Load (theSelection, |
| 126 | this, |
| 127 | anOcctShape, |
| 128 | aTypeOfSel, |
| 129 | aDeflection, |
| 130 | myOCCTDrawer->DeviationAngle(), |
| 131 | isAutoTriangulation); |
| 132 | } |
| 133 | catch (Standard_Failure) |
| 134 | { |
| 135 | if (theMode == 0) |
| 136 | { |
| 137 | Bnd_Box aBndBox = BoundingBox(); |
| 138 | Handle(StdSelect_BRepOwner) aOwner = new StdSelect_BRepOwner (anOcctShape, this); |
| 139 | Handle(Select3D_SensitiveBox) aSensitiveBox = |
| 140 | new Select3D_SensitiveBox (aOwner, aBndBox); |
| 141 | theSelection->Add (aSensitiveBox); |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | //============================================================================ |
| 147 | // Method: BoundingBox |
| 148 | // Purpose: |
| 149 | //============================================================================ |
| 150 | const Bnd_Box& IVtkOCC_SelectableObject::BoundingBox() |
| 151 | { |
| 152 | if (myShape.IsNull()) |
| 153 | { |
| 154 | myBndBox.SetVoid(); |
| 155 | return myBndBox; |
| 156 | } |
| 157 | |
| 158 | TopoDS_Shape anOcctShape = myShape->GetShape(); |
| 159 | |
| 160 | if (anOcctShape.ShapeType() == TopAbs_COMPOUND && anOcctShape.NbChildren() == 0) |
| 161 | { |
| 162 | // Shape empty -> nothing to do |
| 163 | myBndBox.SetVoid (); |
| 164 | return myBndBox; |
| 165 | } |
| 166 | |
| 167 | if (myBndBox.IsVoid()) |
| 168 | { |
| 169 | BRepBndLib::Add (anOcctShape, myBndBox, true); |
| 170 | } |
| 171 | |
| 172 | return myBndBox; |
| 173 | } |
| 174 | |
| 175 | //============================================================================ |
| 176 | // Method: BoundingBox |
| 177 | // Purpose: |
| 178 | //============================================================================ |
| 179 | void IVtkOCC_SelectableObject::BoundingBox (Bnd_Box& theBndBox) |
| 180 | { |
| 181 | BoundingBox(); |
| 182 | theBndBox = myBndBox; |
| 183 | } |