src/PartSet/PartSet_Tools.cpp

   1 // File:        PartSet_Tools.h
   2 // Created:     28 Apr 2014
   3 // Author:      Natalia ERMOLAEVA
   4
   5 #include <PartSet_Tools.h>
   6
   7 #include <ModelAPI_Data.h>
   8 #include <ModelAPI_AttributeDouble.h>
   9
  10 #include <GeomDataAPI_Point.h>
  11 #include <GeomDataAPI_Dir.h>
  12 #include <GeomDataAPI_Point2D.h>
  13
  14 #include <GeomAPI_Dir.h>
  15 #include <GeomAPI_XYZ.h>
  16
  17 #include <SketchPlugin_Sketch.h>
  18 #include <SketchPlugin_Line.h>
  19
  20 #include <XGUI_ViewerPrs.h>
  21
  22 #include <V3d_View.hxx>
  23 #include <gp_Pln.hxx>
  24 #include <ProjLib.hxx>
  25 #include <ElSLib.hxx>
  26 #include <Geom_Line.hxx>
  27 #include <GeomAPI_ProjectPointOnCurve.hxx>
  28
  29 #ifdef _DEBUG
  30 #include <QDebug>
  31 #endif
  32
  33 const double PRECISION_TOLERANCE = 0.000001;
  34
  35 gp_Pnt PartSet_Tools::ConvertClickToPoint(QPoint thePoint, Handle(V3d_View) theView)
  36 {
  37   if (theView.IsNull())
  38     return gp_Pnt();
  39
  40   V3d_Coordinate XEye, YEye, ZEye, XAt, YAt, ZAt;
  41   theView->Eye(XEye, YEye, ZEye);
  42
  43   theView->At(XAt, YAt, ZAt);
  44   gp_Pnt EyePoint(XEye, YEye, ZEye);
  45   gp_Pnt AtPoint(XAt, YAt, ZAt);
  46
  47   gp_Vec EyeVector(EyePoint, AtPoint);
  48   gp_Dir EyeDir(EyeVector);
  49
  50   gp_Pln PlaneOfTheView = gp_Pln(AtPoint, EyeDir);
  51   Standard_Real X, Y, Z;
  52   theView->Convert(thePoint.x(), thePoint.y(), X, Y, Z);
  53   gp_Pnt ConvertedPoint(X, Y, Z);
  54
  55   gp_Pnt2d ConvertedPointOnPlane = ProjLib::Project(PlaneOfTheView, ConvertedPoint);
  56   gp_Pnt ResultPoint = ElSLib::Value(ConvertedPointOnPlane.X(), ConvertedPointOnPlane.Y(), PlaneOfTheView);
  57   return ResultPoint;
  58 }
  59
  60 void PartSet_Tools::ConvertTo2D(const gp_Pnt& thePoint, boost::shared_ptr<ModelAPI_Feature> theSketch,
  61                                 Handle(V3d_View) theView, double& theX, double& theY)
  62 {
  63   if (!theSketch)
  64     return;
  65
  66   boost::shared_ptr<ModelAPI_AttributeDouble> anAttr;
  67   boost::shared_ptr<ModelAPI_Data> aData = theSketch->data();
  68
  69   boost::shared_ptr<GeomDataAPI_Point> anOrigin =
  70     boost::dynamic_pointer_cast<GeomDataAPI_Point>(aData->attribute(SKETCH_ATTR_ORIGIN));
  71
  72   boost::shared_ptr<GeomDataAPI_Dir> aX =
  73     boost::dynamic_pointer_cast<GeomDataAPI_Dir>(aData->attribute(SKETCH_ATTR_DIRX));
  74   boost::shared_ptr<GeomDataAPI_Dir> anY =
  75     boost::dynamic_pointer_cast<GeomDataAPI_Dir>(aData->attribute(SKETCH_ATTR_DIRY));
  76
  77   gp_Pnt anOriginPnt(anOrigin->x(), anOrigin->y(), anOrigin->z());
  78   gp_Vec aVec(anOriginPnt, thePoint);
  79
  80   if (!theView.IsNull())
  81   {
  82     V3d_Coordinate XEye, YEye, ZEye, XAt, YAt, ZAt;
  83     theView->Eye(XEye, YEye, ZEye);
  84
  85     theView->At(XAt, YAt, ZAt);
  86     gp_Pnt EyePoint(XEye, YEye, ZEye);
  87     gp_Pnt AtPoint(XAt, YAt, ZAt);
  88
  89     gp_Vec anEyeVec(EyePoint, AtPoint);
  90     anEyeVec.Normalize();
  91
  92     boost::shared_ptr<GeomDataAPI_Dir> aNormal =
  93                   boost::dynamic_pointer_cast<GeomDataAPI_Dir>(aData->attribute(SKETCH_ATTR_NORM));
  94     gp_Vec aNormalVec(aNormal->x(), aNormal->y(), aNormal->z());
  95
  96     double aDen = anEyeVec * aNormalVec;
  97     double aLVec = aDen != 0 ? aVec * aNormalVec / aDen : DBL_MAX;
  98
  99     gp_Vec aDeltaVec = anEyeVec*aLVec;
 100     aVec = aVec - aDeltaVec;
 101   }
 102   theX = aVec.X() * aX->x() + aVec.Y() * aX->y() + aVec.Z() * aX->z();
 103   theY = aVec.X() * anY->x() + aVec.Y() * anY->y() + aVec.Z() * anY->z();
 104 }
 105
 106 void PartSet_Tools::IntersectLines(double theX0, double theY0, double theX1, double theY1,
 107                                    double theX2, double theY2, double theX3, double theY3,
 108                                    double& theX, double& theY)
 109 {
 110   double aV1 = theX1 - theX0, aV2 = theY1 - theY0;
 111   double aW1 = theX3 - theX2, aW2 = theY3 - theY2;
 112
 113   double aT2 = 0;
 114   if (aV1  != 0 && aV2 != 0)
 115     aT2 = (( theY2 - theY0 )/aV2 - ( theX2 - theX0 )/aV1) / ( aW1/aV1 - aW2/aV2 );
 116   else
 117     aT2 = DBL_MAX;
 118
 119   theX  = theX2 + aT2*aW1;
 120   theY = theY2 + aT2*aW2;
 121
 122   // the coordinates of two lines are on the common line
 123   //It is not possible to use Precision::Confusion(), because it is e-0.8, but V is sometimes e-6
 124   Standard_Real aPrec = PRECISION_TOLERANCE;
 125   if (fabs(theX - theX0) < aPrec && fabs(theY - theY0) < aPrec) {
 126     ProjectPointOnLine(theX2, theY2, theX3, theY3, theX1, theY1, theX, theY);
 127   }
 128 }
 129
 130 void PartSet_Tools::ProjectPointOnLine(double theX1, double theY1, double theX2, double theY2,
 131                                        double thePointX, double thePointY, double& theX, double& theY)
 132 {
 133   theX = theY = 0;
 134
 135   Handle(Geom_Line) aLine = new Geom_Line(gp_Pnt(theX1, theY1, 0),
 136                                      gp_Dir(gp_Vec(gp_Pnt(theX1, theY1, 0), gp_Pnt(theX2, theY2, 0))));
 137   GeomAPI_ProjectPointOnCurve aProj(gp_Pnt(thePointX, thePointY, 0), aLine);
 138
 139   Standard_Integer aNbPoint = aProj.NbPoints();
 140   if (aNbPoint > 0) {
 141     gp_Pnt aPoint = aProj.Point(1);
 142     theX = aPoint.X();
 143     theY = aPoint.Y();
 144   }
 145 }
 146
 147 boost::shared_ptr<ModelAPI_Feature> PartSet_Tools::NearestFeature(QPoint thePoint,
 148                                                    Handle_V3d_View theView,
 149                                                    boost::shared_ptr<ModelAPI_Feature> theSketch,
 150                                                    const std::list<XGUI_ViewerPrs>& theFeatures)
 151 {
 152   double aX, anY;
 153   gp_Pnt aPoint = PartSet_Tools::ConvertClickToPoint(thePoint, theView);
 154   PartSet_Tools::ConvertTo2D(aPoint, theSketch, theView, aX, anY);
 155
 156   boost::shared_ptr<ModelAPI_Feature> aFeature;
 157   std::list<XGUI_ViewerPrs>::const_iterator anIt = theFeatures.begin(), aLast = theFeatures.end();
 158
 159   boost::shared_ptr<ModelAPI_Feature> aDeltaFeature;
 160   double aMinDelta = -1;
 161   XGUI_ViewerPrs aPrs;
 162   for (; anIt != aLast; anIt++) {
 163     aPrs = *anIt;
 164     if (!aPrs.feature())
 165       continue;
 166     double aDelta = DistanceToPoint(aPrs.feature(), aX, anY);
 167     if (aMinDelta < 0 || aMinDelta > aDelta) {
 168       aMinDelta = aDelta;
 169       aDeltaFeature = aPrs.feature();
 170     }
 171   }
 172   return aDeltaFeature;
 173 }
 174
 175 double PartSet_Tools::DistanceToPoint(boost::shared_ptr<ModelAPI_Feature> theFeature,
 176                                       double theX, double theY)
 177 {
 178   double aDelta = 0;
 179   if (theFeature->getKind() != "SketchLine")
 180     return aDelta;
 181
 182   boost::shared_ptr<ModelAPI_Data> aData = theFeature->data();
 183
 184   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 185         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(LINE_ATTR_START));
 186   boost::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 187         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(LINE_ATTR_END));
 188
 189   double aX, anY;
 190   PartSet_Tools::ProjectPointOnLine(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y(), theX, theY, aX, anY);
 191
 192   aDelta = gp_Pnt(theX, theY, 0).Distance(gp_Pnt(aX, anY, 0));
 193
 194   return aDelta;
 195 }