refs #30 - Sketch base GUI: create, draw lines

[modules/shaper.git] / src / PartSet / PartSet_Tools.cpp

diff --git a/src/PartSet/PartSet_Tools.cpp b/src/PartSet/PartSet_Tools.cpp
index 04a41572a457de064d2738ef8a746171bcd1f0c9..2c7a93b069bab6d65eaaab70c0fd1612d4444d42 100644 (file)
--- a/src/PartSet/PartSet_Tools.cpp
+++ b/src/PartSet/PartSet_Tools.cpp
@@ -4,21 +4,34 @@
 
 #include <PartSet_Tools.h>
 
-#include <V3d_View.hxx>
-#include <gp_Pln.hxx>
-#include <ProjLib.hxx>
-#include <ElSLib.hxx>
-
 #include <ModelAPI_Data.h>
 #include <ModelAPI_AttributeDouble.h>
+
 #include <GeomDataAPI_Point.h>
 #include <GeomDataAPI_Dir.h>
+#include <GeomDataAPI_Point2D.h>
+
+#include <GeomAPI_Dir.h>
+#include <GeomAPI_XYZ.h>
+
 #include <SketchPlugin_Sketch.h>
+#include <SketchPlugin_Line.h>
+
+#include <XGUI_ViewerPrs.h>
+
+#include <V3d_View.hxx>
+#include <gp_Pln.hxx>
+#include <ProjLib.hxx>
+#include <ElSLib.hxx>
+#include <Geom_Line.hxx>
+#include <GeomAPI_ProjectPointOnCurve.hxx>
 
 #ifdef _DEBUG
 #include <QDebug>
 #endif
 
+const double PRECISION_TOLERANCE = 0.000001;
+
 gp_Pnt PartSet_Tools::ConvertClickToPoint(QPoint thePoint, Handle(V3d_View) theView)
 {
   if (theView.IsNull())
@@ -80,8 +93,8 @@ void PartSet_Tools::ConvertTo2D(const gp_Pnt& thePoint, boost::shared_ptr<ModelA
                   boost::dynamic_pointer_cast<GeomDataAPI_Dir>(aData->attribute(SKETCH_ATTR_NORM));
     gp_Vec aNormalVec(aNormal->x(), aNormal->y(), aNormal->z());
 
-    double aDen = anEyeVec*aNormalVec;
-    double aLVec = aDen != 0 ? aVec*aNormalVec/aDen : aVec*aNormalVec;
+    double aDen = anEyeVec * aNormalVec;
+    double aLVec = aDen != 0 ? aVec * aNormalVec / aDen : DBL_MAX;
 
     gp_Vec aDeltaVec = anEyeVec*aLVec;
     aVec = aVec - aDeltaVec;
@@ -89,3 +102,94 @@ void PartSet_Tools::ConvertTo2D(const gp_Pnt& thePoint, boost::shared_ptr<ModelA
   theX = aVec.X() * aX->x() + aVec.Y() * aX->y() + aVec.Z() * aX->z();
   theY = aVec.X() * anY->x() + aVec.Y() * anY->y() + aVec.Z() * anY->z();
 }
+
+void PartSet_Tools::IntersectLines(double theX0, double theY0, double theX1, double theY1,
+                                   double theX2, double theY2, double theX3, double theY3,
+                                   double& theX, double& theY)
+{
+  double aV1 = theX1 - theX0, aV2 = theY1 - theY0;
+  double aW1 = theX3 - theX2, aW2 = theY3 - theY2;
+
+  double aT2 = 0;
+  if (aV1  != 0 && aV2 != 0)
+    aT2 = (( theY2 - theY0 )/aV2 - ( theX2 - theX0 )/aV1) / ( aW1/aV1 - aW2/aV2 );
+  else
+    aT2 = DBL_MAX;
+
+  theX  = theX2 + aT2*aW1;
+  theY = theY2 + aT2*aW2;
+
+  // the coordinates of two lines are on the common line
+  //It is not possible to use Precision::Confusion(), because it is e-0.8, but V is sometimes e-6
+  Standard_Real aPrec = PRECISION_TOLERANCE;
+  if (fabs(theX - theX0) < aPrec && fabs(theY - theY0) < aPrec) {
+    ProjectPointOnLine(theX2, theY2, theX3, theY3, theX1, theY1, theX, theY);    
+  }
+}
+
+void PartSet_Tools::ProjectPointOnLine(double theX1, double theY1, double theX2, double theY2,
+                                       double thePointX, double thePointY, double& theX, double& theY)
+{
+  theX = theY = 0;
+
+  Handle(Geom_Line) aLine = new Geom_Line(gp_Pnt(theX1, theY1, 0),
+                                     gp_Dir(gp_Vec(gp_Pnt(theX1, theY1, 0), gp_Pnt(theX2, theY2, 0))));
+  GeomAPI_ProjectPointOnCurve aProj(gp_Pnt(thePointX, thePointY, 0), aLine);
+
+  Standard_Integer aNbPoint = aProj.NbPoints();
+  if (aNbPoint > 0) {
+    gp_Pnt aPoint = aProj.Point(1);
+    theX = aPoint.X();
+    theY = aPoint.Y();
+  }
+}
+
+boost::shared_ptr<ModelAPI_Feature> PartSet_Tools::NearestFeature(QPoint thePoint,
+                                                   Handle_V3d_View theView,
+                                                   boost::shared_ptr<ModelAPI_Feature> theSketch,
+                                                   const std::list<XGUI_ViewerPrs>& theFeatures)
+{
+  double aX, anY;
+  gp_Pnt aPoint = PartSet_Tools::ConvertClickToPoint(thePoint, theView);
+  PartSet_Tools::ConvertTo2D(aPoint, theSketch, theView, aX, anY);
+
+  boost::shared_ptr<ModelAPI_Feature> aFeature;
+  std::list<XGUI_ViewerPrs>::const_iterator anIt = theFeatures.begin(), aLast = theFeatures.end();
+
+  boost::shared_ptr<ModelAPI_Feature> aDeltaFeature;   
+  double aMinDelta = -1;
+  XGUI_ViewerPrs aPrs;
+  for (; anIt != aLast; anIt++) {
+    aPrs = *anIt;
+    if (!aPrs.feature())
+      continue;
+    double aDelta = DistanceToPoint(aPrs.feature(), aX, anY);
+    if (aMinDelta < 0 || aMinDelta > aDelta) {
+      aMinDelta = aDelta;
+      aDeltaFeature = aPrs.feature();
+    }
+  }
+  return aDeltaFeature;
+}
+
+double PartSet_Tools::DistanceToPoint(boost::shared_ptr<ModelAPI_Feature> theFeature,
+                                      double theX, double theY)
+{
+  double aDelta = 0;
+  if (theFeature->getKind() != "SketchLine")
+    return aDelta;
+
+  boost::shared_ptr<ModelAPI_Data> aData = theFeature->data();
+
+  boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
+        boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(LINE_ATTR_START));
+  boost::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
+        boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(LINE_ATTR_END));
+
+  double aX, anY;
+  PartSet_Tools::ProjectPointOnLine(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y(), theX, theY, aX, anY);
+
+  aDelta = gp_Pnt(theX, theY, 0).Distance(gp_Pnt(aX, anY, 0));
+
+  return aDelta;
+}