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227 lines
6.6 KiB
C++
Executable File
227 lines
6.6 KiB
C++
Executable File
// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#include <DrawTrSurf_Curve2d.ixx>
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#include <Geom2d_Curve.hxx>
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#include <Geom2d_OffsetCurve.hxx>
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#include <Geom2d_Line.hxx>
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#include <Geom2d_Parabola.hxx>
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#include <Geom2d_Hyperbola.hxx>
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#include <Geom2dAdaptor_Curve.hxx>
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#include <Geom_Plane.hxx>
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#include <GeomTools_Curve2dSet.hxx>
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#include <Geom2dLProp_CLProps2d.hxx>
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#include <gp.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <Precision.hxx>
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static Standard_Real DrawTrSurf_CurveLimit = 400;
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extern Standard_Boolean Draw_Bounds;
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//=======================================================================
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//function : DrawTrSurf_Curve2d
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//purpose :
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//=======================================================================
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DrawTrSurf_Curve2d::DrawTrSurf_Curve2d (const Handle(Geom2d_Curve)& C,
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const Standard_Boolean DispOrigin) :
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DrawTrSurf_Drawable (50)
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{
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curv = C;
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look = Draw_vert;
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disporigin = DispOrigin ;
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dispcurvradius = Standard_False;
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radiusmax = 1.0e3;
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radiusratio = 0.1;
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}
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//=======================================================================
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//function : DrawTrSurf_Curve2d
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//purpose :
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//=======================================================================
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DrawTrSurf_Curve2d::DrawTrSurf_Curve2d (const Handle(Geom2d_Curve)& C,
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const Draw_Color& aColor,
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const Standard_Integer Discret,
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const Standard_Boolean DispOrigin,
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const Standard_Boolean DispCurvRadius,
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const Standard_Real RadiusMax,
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const Standard_Real RadiusRatio) :
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DrawTrSurf_Drawable (Discret)
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{
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curv = C;
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look = aColor;
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disporigin = DispOrigin ;
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dispcurvradius = DispCurvRadius;
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radiusmax = RadiusMax;
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radiusratio = RadiusRatio;
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}
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//=======================================================================
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//function : DrawOn
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//purpose :
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//=======================================================================
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void DrawTrSurf_Curve2d::DrawOn (Draw_Display& dis) const
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{
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Standard_Real First = curv->FirstParameter();
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Standard_Real Last = curv->LastParameter();
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Standard_Boolean firstInf = Precision::IsNegativeInfinite(First);
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Standard_Boolean lastInf = Precision::IsPositiveInfinite(Last);
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if (firstInf || lastInf) {
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gp_Pnt2d P1,P2;
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Standard_Real delta = 1;
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if (firstInf && lastInf) {
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do {
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delta *= 2;
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First = - delta;
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Last = delta;
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curv->D0(First,P1);
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curv->D0(Last,P2);
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} while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
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}
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else if (firstInf) {
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curv->D0(Last,P2);
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do {
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delta *= 2;
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First = Last - delta;
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curv->D0(First,P1);
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} while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
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}
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else if (lastInf) {
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curv->D0(First,P1);
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do {
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delta *= 2;
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Last = First + delta;
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curv->D0(Last,P2);
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} while (P1.Distance(P2) < DrawTrSurf_CurveLimit);
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}
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}
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dis.SetColor (look);
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Geom2dAdaptor_Curve C2d(curv,First,Last);
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DrawCurve2dOn (C2d, dis);
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// mark the origin
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if (disporigin) {
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Draw_Bounds = Standard_False;
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gp_Pnt2d p1,p2;
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gp_Vec2d v;
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C2d.D1(Last,p1,v);
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if (v.Magnitude() > gp::Resolution()) {
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Standard_Real L = 20 / dis.Zoom();
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Standard_Real H = 10 / dis.Zoom();
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gp_Dir2d d(v);
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p2.SetCoord(p1.X() - L*d.X() - H*d.Y(), p1.Y() - L*d.Y() + H*d.X());
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dis.MoveTo(p2);
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p2.SetCoord(p1.X() - L*d.X() + H*d.Y(), p1.Y() - L*d.Y() - H*d.X());
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dis.DrawTo(p1);
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dis.DrawTo(p2);
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}
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Draw_Bounds = Standard_True;
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}
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// Draw the curvature Radius
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if (dispcurvradius && (C2d.GetType() != GeomAbs_Line)) {
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Standard_Integer ii;
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Standard_Integer intrv, nbintv = C2d.NbIntervals(GeomAbs_CN);
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TColStd_Array1OfReal TI(1,nbintv+1);
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C2d.Intervals(TI,GeomAbs_CN);
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Standard_Real Resolution = 1.0e-9, Curvature;
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Geom2dLProp_CLProps2d LProp(curv, 2, Resolution);
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gp_Pnt2d P1, P2;
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for (intrv = 1; intrv <= nbintv; intrv++) {
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Standard_Real t = TI(intrv);
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Standard_Real step = (TI(intrv+1) - t) / GetDiscretisation();
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Standard_Real LRad, ratio;
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for (ii = 1; ii <= GetDiscretisation(); ii++) {
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LProp.SetParameter(t);
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if (LProp.IsTangentDefined()) {
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Curvature = Abs(LProp.Curvature());
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if ( Curvature > Resolution) {
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curv->D0(t, P1);
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dis.MoveTo(P1);
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LRad = 1./Curvature;
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ratio = ( ( LRad > radiusmax) ? radiusmax/LRad : 1 );
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ratio *= radiusratio;
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LProp.CentreOfCurvature(P2);
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gp_Vec2d V(P1, P2);
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dis.DrawTo(P1.Translated(ratio*V));
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}
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}
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t += step;
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}
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}
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}
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}
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//=======================================================================
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//function : Copy
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//purpose :
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//=======================================================================
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Handle(Draw_Drawable3D) DrawTrSurf_Curve2d::Copy()const
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{
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Handle(DrawTrSurf_Curve2d) DC = new DrawTrSurf_Curve2d
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(Handle(Geom2d_Curve)::DownCast(curv->Copy()),
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look,
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GetDiscretisation());
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return DC;
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}
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//=======================================================================
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//function : Dump
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//purpose :
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//=======================================================================
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void DrawTrSurf_Curve2d::Dump(Standard_OStream& S) const
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{
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GeomTools_Curve2dSet::PrintCurve2d(curv,S);
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}
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//=======================================================================
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//function : Whatis
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//purpose :
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//=======================================================================
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void DrawTrSurf_Curve2d::Whatis(Draw_Interpretor& S)const
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{
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S << "2d curve";
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}
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//=======================================================================
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//function : Is3D
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//purpose :
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//=======================================================================
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Standard_Boolean DrawTrSurf_Curve2d::Is3D() const
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{
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return Standard_False;
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}
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