1 // Copyright (C) 2014-2017 CEA/DEN, EDF R&D
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, or (at your option) any later version.
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
18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
21 #include "SketcherPrs_PositionMgr.h"
22 #include "SketcherPrs_Tools.h"
24 #include <GeomAPI_Edge.h>
25 #include <GeomAPI_Curve.h>
26 #include <GeomAPI_Vertex.h>
27 #include <GeomAPI_Dir.h>
29 #include <BRepExtrema_ExtPC.hxx>
30 #include <TopoDS_Vertex.hxx>
31 #include <Geom_Curve.hxx>
33 static SketcherPrs_PositionMgr* MyPosMgr = NULL;
35 // The class is implemented as a singlton
36 SketcherPrs_PositionMgr* SketcherPrs_PositionMgr::get()
39 MyPosMgr = new SketcherPrs_PositionMgr();
43 SketcherPrs_PositionMgr::SketcherPrs_PositionMgr()
48 int SketcherPrs_PositionMgr::getPositionIndex(ObjectPtr theLine,
49 const SketcherPrs_SymbolPrs* thePrs)
51 if (myShapes.count(theLine) == 1) {
52 // Find the map and add new [Presentation - Index] pair
53 PositionsMap& aPosMap = myShapes[theLine];
54 if (aPosMap.count(thePrs) == 1) {
55 // return existing index
56 return aPosMap[thePrs];
58 // Add a new [Presentation - Index] pair
59 int aInd = int(aPosMap.size());
60 aPosMap[thePrs] = aInd;
64 // Create a new map with initial index
67 myShapes[theLine] = aPosMap;
73 gp_Vec getVector(ObjectPtr theShape, GeomDirPtr theDir, gp_Pnt theP)
76 std::shared_ptr<GeomAPI_Shape> aShape = SketcherPrs_Tools::getShape(theShape);
77 if (aShape->isEdge()) {
78 std::shared_ptr<GeomAPI_Curve> aCurve =
79 std::shared_ptr<GeomAPI_Curve>(new GeomAPI_Curve(aShape));
81 if (aCurve->isCircle()) {
82 GeomEdgePtr aEdgePtr(new GeomAPI_Edge(aShape));
83 GeomVertexPtr aVertexPtr(new GeomAPI_Vertex(theP.X(), theP.Y(), theP.Z()));
84 BRepExtrema_ExtPC aExtrema(aVertexPtr->impl<TopoDS_Vertex>(),
85 aEdgePtr->impl<TopoDS_Edge>());
86 int aNb = aExtrema.NbExt();
88 for (int i = 1; i <= aNb; i++) {
89 if (aExtrema.IsMin(i)) {
90 double aParam = aExtrema.Parameter(i);
91 Handle(Geom_Curve) aCurv = aCurve->impl<Handle_Geom_Curve>();
93 aCurv->D1(aParam, aP, aVec);
99 double aMidParam = (aCurve->startParam() + aCurve->endParam()) / 2.;
100 GeomPointPtr aPnt1 = aCurve->getPoint((aMidParam + aCurve->endParam()) / 2.);
101 GeomPointPtr aPnt2 = aCurve->getPoint((aMidParam + aCurve->startParam()) / 2.);
103 aVec = gp_Vec(aPnt1->impl<gp_Pnt>(), aPnt2->impl<gp_Pnt>());
106 aVec = gp_Vec(theDir->impl<gp_Dir>());
111 gp_Pnt SketcherPrs_PositionMgr::getPosition(ObjectPtr theShape,
112 const SketcherPrs_SymbolPrs* thePrs,
113 double theStep, GeomPointPtr thePnt)
115 std::shared_ptr<GeomAPI_Shape> aShape = SketcherPrs_Tools::getShape(theShape);
116 gp_Pnt aP; // Central point
119 aP = thePnt->impl<gp_Pnt>();
121 if (aShape->isEdge()) {
122 std::shared_ptr<GeomAPI_Curve> aCurve =
123 std::shared_ptr<GeomAPI_Curve>(new GeomAPI_Curve(aShape));
124 // this is a circle or arc
125 double aMidParam = (aCurve->startParam() + aCurve->endParam()) / 2.;
126 std::shared_ptr<GeomAPI_Pnt> aPnt = aCurve->getPoint(aMidParam);
127 aP = aPnt->impl<gp_Pnt>();
130 std::shared_ptr<GeomAPI_Vertex> aVertex =
131 std::shared_ptr<GeomAPI_Vertex>(new GeomAPI_Vertex(aShape));
132 std::shared_ptr<GeomAPI_Pnt> aPnt = aVertex->point();
133 aP = aPnt->impl<gp_Pnt>();
137 gp_Vec aVec1 = getVector(theShape, thePrs->plane()->dirX(), aP);
139 // Compute shifting vector for a one symbol
140 gp_Vec aShift = aVec1.Crossed(thePrs->plane()->normal()->impl<gp_Dir>());
142 // For point based symbols step = 1.2, for line based = 0.8
143 aShift.Multiply(theStep * (thePnt.get()? 1.2 : 0.8));
145 // Shift the position coordinate according to position index
146 int aPos = getPositionIndex(theShape, thePrs);
148 if ((aPos % 2) == 0) {
150 aP.Translate(aShift);
155 aM = -(aPos + 2) / 4;
159 aP.Translate(-aShift);
161 if ((aPos - 1) % 4 == 0)
164 aM = -(aPos + 1) / 4;
168 // Normalize vector along the line
170 aVec1.Multiply(theStep);
171 aP.Translate(aVec1.Multiplied(aM));
176 void SketcherPrs_PositionMgr::deleteConstraint(const SketcherPrs_SymbolPrs* thePrs)
178 std::map<ObjectPtr, PositionsMap>::iterator aIt;
179 std::list<ObjectPtr> aToDel;
180 // Clear map for deleted presentation
181 for (aIt = myShapes.begin(); aIt != myShapes.end(); ++aIt) {
182 PositionsMap& aPosMap = aIt->second;
183 if (aPosMap.count(thePrs) > 0) {
185 aPosMap.erase(aPosMap.find(thePrs));
186 if (aPosMap.size() == 0)
188 aToDel.push_back(aIt->first);
190 // Reindex objects positions in order to avoid spaces
191 PositionsMap::iterator aIt;
193 for (aIt = aPosMap.begin(); aIt != aPosMap.end(); aIt++, i++)
198 std::list<ObjectPtr>::const_iterator aListIt;
199 for (aListIt = aToDel.cbegin(); aListIt != aToDel.cend(); ++aListIt) {
200 myShapes.erase(*aListIt);