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#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";
}
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