Integration of OCCT 6.5.0 from SVN

src/DrawTrSurf/DrawTrSurf_Curve.cxx

@@ -0,0 +1,201 @@
+#include <DrawTrSurf_Curve.ixx>
+#include <GeomAdaptor_Curve.hxx>
+#include <GeomTools_CurveSet.hxx>
+#include <GeomLProp_CLProps.hxx>
+#include <Precision.hxx>
+#include <gp.hxx>
+#include <gp_Pnt2d.hxx>
+#include <gp_Dir2d.hxx>
+#include <gp_Vec.hxx>
+#include <gp_Vec2d.hxx>
+#include <TColStd_Array1OfReal.hxx>
+
+Standard_Real DrawTrSurf_CurveLimit = 400;
+extern Standard_Boolean Draw_Bounds;
+
+
+//=======================================================================
+//function : DrawTrSurf_Curve
+//purpose  : 
+//=======================================================================
+
+DrawTrSurf_Curve::DrawTrSurf_Curve (const Handle(Geom_Curve)& C,
+				    const Standard_Boolean DispOrigin) :
+       DrawTrSurf_Drawable (16, 0.01, 1),
+       curv(C),
+       look(Draw_vert),
+       disporigin(DispOrigin),
+       dispcurvradius(Standard_False),
+       radiusmax(1.0e3),
+       radiusratio(0.1)
+{
+}
+
+
+
+//=======================================================================
+//function : DrawTrSurf_Curve
+//purpose  : 
+//=======================================================================
+
+DrawTrSurf_Curve::DrawTrSurf_Curve (const Handle(Geom_Curve)& C, 
+				    const Draw_Color& aColor, 
+				    const Standard_Integer Discret,
+				    const Standard_Real Deflection, 
+				    const Standard_Integer DrawMode,
+				    const Standard_Boolean DispOrigin,
+				    const Standard_Boolean DispCurvRadius,
+				    const Standard_Real  RadiusMax,
+				    const Standard_Real  RadiusRatio) :
+       DrawTrSurf_Drawable (Discret,Deflection, DrawMode),
+       curv(C),
+       look(aColor),
+       disporigin(DispOrigin),
+       dispcurvradius(DispCurvRadius),
+       radiusmax(RadiusMax),
+       radiusratio(RadiusRatio)
+{
+}
+
+
+//=======================================================================
+//function : DrawOn
+//purpose  : 
+//=======================================================================
+
+void DrawTrSurf_Curve::DrawOn (Draw_Display& dis) const 
+{
+  Standard_Real First = curv->FirstParameter();
+  Standard_Real Last  = curv->LastParameter();
+  Standard_Boolean firstInf = Precision::IsNegativeInfinite(First);
+  Standard_Boolean lastInf  = Precision::IsPositiveInfinite(Last);
+
+  if (firstInf || lastInf) {
+    gp_Pnt P1,P2;
+    Standard_Real delta = 1;
+    if (firstInf && lastInf) {
+      do {
+	delta *= 2;
+	First = - delta;
+	Last  =   delta;
+	curv->D0(First,P1);
+	curv->D0(Last,P2);
+      } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
+    }
+    else if (firstInf) {
+      curv->D0(Last,P2);
+      do {
+	delta *= 2;
+	First = Last - delta;
+	curv->D0(First,P1);
+      } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
+    }
+    else if (lastInf) {
+      curv->D0(First,P1);
+      do {
+	delta *= 2;
+	Last = First + delta;
+	curv->D0(Last,P2);
+      } while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
+    }
+  }    
+  
+  dis.SetColor (look);
+  GeomAdaptor_Curve C(curv,First,Last);
+  DrawCurveOn(C,dis);
+
+  // mark the orientation
+  if (disporigin) {
+    Draw_Bounds = Standard_False;
+    gp_Pnt P;
+    gp_Vec V;
+    C.D1(Last,P,V);
+    gp_Pnt2d p1,p2;
+    dis.Project(P,p1);
+    P.Translate(V);
+    dis.Project(P,p2);
+    gp_Vec2d v(p1,p2);
+    if (v.Magnitude() > gp::Resolution()) {
+      Standard_Real L = 20 / dis.Zoom();
+      Standard_Real H = 10 / dis.Zoom();
+      gp_Dir2d d(v);
+      p2.SetCoord(p1.X() - L*d.X() - H*d.Y(), p1.Y() - L*d.Y() + H*d.X());
+      dis.MoveTo(p2);
+      p2.SetCoord(p1.X() - L*d.X() + H*d.Y(), p1.Y() - L*d.Y() - H*d.X());
+      dis.DrawTo(p1);
+      dis.DrawTo(p2);
+    }
+    Draw_Bounds = Standard_True;
+  }
+// Draw the curvature Radius      
+  if (dispcurvradius && (C.GetType() != GeomAbs_Line)) {
+    Standard_Integer ii;
+    Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN);
+    TColStd_Array1OfReal TI(1,nbintv+1);
+    C.Intervals(TI,GeomAbs_CN);
+    Standard_Real Resolution = 1.0e-9, Curvature;
+    GeomLProp_CLProps LProp(curv, 2, Resolution);
+    gp_Pnt P1, P2;    
+
+    for (intrv = 1; intrv <= nbintv; intrv++) {
+	Standard_Real t = TI(intrv);
+	Standard_Real step = (TI(intrv+1) - t) / GetDiscretisation();
+	Standard_Real LRad, ratio;
+	for (ii = 1; ii <= GetDiscretisation(); ii++) {	 
+	  LProp.SetParameter(t);
+          if (LProp.IsTangentDefined()) {
+	     Curvature = Abs(LProp.Curvature());
+	     if ( Curvature >  Resolution) {
+	       curv->D0(t, P1);
+	       dis.MoveTo(P1);
+	       LRad = 1./Curvature;
+	       ratio = ( (  LRad > radiusmax) ? radiusmax/LRad : 1 );
+	       ratio *= radiusratio;
+	       LProp.CentreOfCurvature(P2);
+	       gp_Vec V(P1, P2);
+	       dis.DrawTo(P1.Translated(ratio*V));
+	    }
+	   }
+	   t += step;
+	}
+      }
+  }
+}
+
+
+//=======================================================================
+//function : Copy
+//purpose  : 
+//=======================================================================
+
+Handle(Draw_Drawable3D)  DrawTrSurf_Curve::Copy()const 
+{
+  Handle(DrawTrSurf_Curve) DC = new DrawTrSurf_Curve
+    (Handle(Geom_Curve)::DownCast(curv->Copy()),
+     look,
+     GetDiscretisation(),GetDeflection(),GetDrawMode());
+     
+  return DC;
+}
+
+
+//=======================================================================
+//function : Dump
+//purpose  : 
+//=======================================================================
+
+void  DrawTrSurf_Curve::Dump(Standard_OStream& S)const 
+{
+  GeomTools_CurveSet::PrintCurve(curv,S);
+}
+
+
+//=======================================================================
+//function : Whatis
+//purpose  : 
+//=======================================================================
+
+void  DrawTrSurf_Curve::Whatis(Draw_Interpretor& S)const 
+{
+  S << " a 3d curve";
+}