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#include <DrawTrSurf_BSplineCurve.ixx>
#include <Draw_MarkerShape.hxx>
#include <Geom_BSplineCurve.hxx>
#include <gp_Pnt2d.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColStd_Array1OfReal.hxx>
DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve (
const Handle(Geom_BSplineCurve)& C) :
DrawTrSurf_Curve (C, Draw_vert, 16, 0.05, 1) {
drawKnots = Standard_True;
knotsForm = Draw_Losange;
knotsLook = Draw_violet;
knotsDim = 5;
drawPoles = Standard_True;
polesLook = Draw_rouge;
}
DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve (
const Handle(Geom_BSplineCurve)& C, const Draw_Color& CurvColor,
const Draw_Color& PolesColor, const Draw_Color& KnotsColor,
const Draw_MarkerShape KnotsShape, const Standard_Integer KnotsSize,
const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots,
const Standard_Integer Discret, const Standard_Real Deflection,
const Standard_Integer DrawMode)
: DrawTrSurf_Curve (C , CurvColor, Discret, Deflection, DrawMode) {
drawKnots = ShowKnots;
knotsForm = KnotsShape;
knotsLook = KnotsColor;
knotsDim = KnotsSize;
drawPoles = ShowPoles;
polesLook = PolesColor;
}
void DrawTrSurf_BSplineCurve::DrawOn (Draw_Display& dis) const {
Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
if (drawPoles) {
Standard_Integer NbPoles = C->NbPoles();
dis.SetColor(polesLook);
TColgp_Array1OfPnt CPoles (1, NbPoles);
C->Poles (CPoles);
dis.MoveTo(CPoles(1));
for (Standard_Integer i = 2; i <= NbPoles; i++) {
dis.DrawTo(CPoles(i));
}
if (C->IsPeriodic())
dis.DrawTo(CPoles(1));
}
DrawTrSurf_Curve::DrawOn(dis);
if (drawKnots) {
Standard_Integer NbKnots = C->NbKnots();
TColStd_Array1OfReal CKnots (1, NbKnots);
C->Knots (CKnots);
dis.SetColor(knotsLook);
Standard_Integer first = C->FirstUKnotIndex();
Standard_Integer last = C->LastUKnotIndex();
for (Standard_Integer i = first; i <= last; i++) {
dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
}
}
}
void DrawTrSurf_BSplineCurve::DrawOn (
Draw_Display& dis,
const Standard_Boolean ShowPoles,
const Standard_Boolean ShowKnots
) const {
Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
if (drawPoles && ShowPoles) {
Standard_Integer NbPoles = C->NbPoles();
dis.SetColor(polesLook);
TColgp_Array1OfPnt CPoles (1, NbPoles);
C->Poles (CPoles);
dis.MoveTo(CPoles(1));
for (Standard_Integer i = 2; i <= NbPoles; i++) {
dis.DrawTo(CPoles(i));
}
}
DrawTrSurf_Curve::DrawOn(dis);
if (drawKnots && ShowKnots) {
Standard_Integer NbKnots = C->NbKnots();
TColStd_Array1OfReal CKnots (1, NbKnots);
C->Knots (CKnots);
dis.SetColor(knotsLook);
for (Standard_Integer i = 1; i <= NbKnots; i++) {
dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
}
}
}
void DrawTrSurf_BSplineCurve::DrawOn (
Draw_Display& dis,
const Standard_Real U1,
const Standard_Real U2,
const Standard_Integer Pindex,
const Standard_Boolean ShowPoles,
const Standard_Boolean ShowKnots
) const {
Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
Standard_Real Eps1 = Abs(Epsilon (U1));
Standard_Real Eps2 = Abs(Epsilon (U2));
Standard_Integer I1, J1, I2, J2;
C->LocateU (U1, Eps1, I1, J1);
C->LocateU (U2, Eps2, I2, J2);
Standard_Integer ka = C->FirstUKnotIndex ();
Standard_Integer kb = C->LastUKnotIndex ();
if (drawPoles && ShowPoles) {
Standard_Integer NbPoles = C->NbPoles();
dis.SetColor(polesLook);
TColgp_Array1OfPnt CPoles (1, NbPoles);
C->Poles (CPoles);
if (Pindex == 0) {
dis.MoveTo(CPoles(1));
for (Standard_Integer i = 2; i <= NbPoles; i++) {
dis.DrawTo(CPoles(i));
}
}
else if (Pindex == 1) {
dis.MoveTo(CPoles(1));
dis.DrawTo(CPoles(2));
}
else if (Pindex == NbPoles) {
dis.MoveTo(CPoles(NbPoles-1));
dis.DrawTo(CPoles(NbPoles));
}
else {
dis.MoveTo(CPoles(Pindex-1));
dis.DrawTo(CPoles(Pindex));
dis.DrawTo(CPoles(Pindex+1));
}
}
dis.SetColor(look);
Standard_Integer Degree = C->Degree();
if (Degree == 1) {
dis.MoveTo(C->Value(U1));
dis.DrawTo(C->Value(U2));
}
else {
Standard_Integer NbPoints;
Standard_Integer Discret = GetDiscretisation();
Standard_Real Ustart = C->Knot (ka);
Standard_Real Uend = C->Knot (kb);
Standard_Real Du, U, Ua, Ub, Uk1, Uk2;
if (I1 > ka) { ka = I1; Uk1 = U1; }
else {
U = U1;
NbPoints = (Standard_Integer) Abs (Discret * (U1 - Ustart) / (Ustart - Uend));
NbPoints = Max (NbPoints, 30);
Du = (Ustart - U1) / NbPoints;
dis.MoveTo(C->Value (U));
for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
U+= Du;
dis.DrawTo(C->Value (U));
}
dis.DrawTo(C->Value (Ustart));
Uk1 = Ustart;
}
if (J2 < kb) { kb = J2; Uk2 = U2; }
else {
Uk2 = Uend;
U = Uend;
NbPoints = (Standard_Integer) Abs (Discret * (U2 - Uend) / (Ustart - Uend));
NbPoints = Max (NbPoints, 30);
Du = (U2 - Uend) / NbPoints;
dis.MoveTo(C->Value (U));
for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
U+= Du;
dis.DrawTo(C->Value (U));
}
dis.DrawTo(C->Value (U2));
}
for (Standard_Integer k = ka; k < kb; k++) {
if (k == ka) {
Ua = Uk1;
Ub = C->Knot (k+1);
}
else if (k == kb-1) {
Ua = C->Knot (k);
Ub = Uk2;
}
else {
Ua = C->Knot (k);
Ub = C->Knot (k+1);
}
U = Ua;
NbPoints = (Standard_Integer) Abs (Discret * (Ua - Ub) / (Ustart - Uend));
NbPoints = Max (NbPoints, 30);
Du = (Ub - Ua) / NbPoints;
dis.MoveTo(C->Value (U));
for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
U+= Du;
dis.DrawTo(C->Value (U));
}
dis.DrawTo(C->Value (Ub));
}
}
if (drawKnots && ShowKnots) {
Standard_Integer NbKnots = C->NbKnots();
TColStd_Array1OfReal CKnots (1, NbKnots);
C->Knots (CKnots);
dis.SetColor(knotsLook);
for (Standard_Integer i = J1; i <= I2; i++) {
dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
}
}
}
void DrawTrSurf_BSplineCurve::ShowPoles () { drawPoles = Standard_True; }
void DrawTrSurf_BSplineCurve::ShowKnots () { drawKnots = Standard_True; }
void DrawTrSurf_BSplineCurve::ClearPoles () { drawPoles = Standard_False; }
void DrawTrSurf_BSplineCurve::ClearKnots () { drawKnots = Standard_False; }
void DrawTrSurf_BSplineCurve::FindPole (
const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real XPrec,
Standard_Integer& Index) const {
Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv);
Standard_Real Prec = XPrec / D.Zoom();
gp_Pnt2d p1(X/D.Zoom(),Y/D.Zoom());
Index++;
Standard_Integer NbPoles = bc->NbPoles();
while (Index <= NbPoles) {
if (D.Project(bc->Pole(Index)).Distance(p1) <= Prec)
return;
Index++;
}
Index = 0;
}
void DrawTrSurf_BSplineCurve::FindKnot (
const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real Prec,
Standard_Integer& Index) const {
Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv);
gp_Pnt2d p1(X,Y);
Index++;
Standard_Integer NbKnots = bc->NbKnots();
while (Index <= NbKnots) {
if (D.Project(bc->Value(bc->Knot(Index))).Distance(p1) <= Prec)
return;
Index++;
}
Index = 0;
}
//=======================================================================
//function : Copy
//purpose :
//=======================================================================
Handle(Draw_Drawable3D) DrawTrSurf_BSplineCurve::Copy()const
{
Handle(DrawTrSurf_BSplineCurve) DC = new DrawTrSurf_BSplineCurve
(Handle(Geom_BSplineCurve)::DownCast(curv->Copy()),
look,polesLook,knotsLook,knotsForm,knotsDim,
drawPoles,drawKnots,
GetDiscretisation(),GetDeflection(),GetDrawMode());
return DC;
}
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