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331 lines
9.3 KiB
C++
331 lines
9.3 KiB
C++
// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Draw_Color.hxx>
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#include <Draw_Display.hxx>
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#include <Draw_Drawable3D.hxx>
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#include <Draw_MarkerShape.hxx>
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#include <DrawTrSurf_BSplineCurve.hxx>
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#include <Geom_BSplineCurve.hxx>
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#include <gp_Pnt2d.hxx>
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#include <Standard_Type.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColStd_Array1OfReal.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_BSplineCurve,DrawTrSurf_Curve)
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DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve (
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const Handle(Geom_BSplineCurve)& C) :
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DrawTrSurf_Curve (C, Draw_vert, 16, 0.05, 1) {
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drawKnots = Standard_True;
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knotsForm = Draw_Losange;
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knotsLook = Draw_violet;
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knotsDim = 5;
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drawPoles = Standard_True;
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polesLook = Draw_rouge;
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}
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DrawTrSurf_BSplineCurve::DrawTrSurf_BSplineCurve (
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const Handle(Geom_BSplineCurve)& C, const Draw_Color& CurvColor,
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const Draw_Color& PolesColor, const Draw_Color& KnotsColor,
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const Draw_MarkerShape KnotsShape, const Standard_Integer KnotsSize,
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const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots,
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const Standard_Integer Discret, const Standard_Real Deflection,
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const Standard_Integer DrawMode)
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: DrawTrSurf_Curve (C , CurvColor, Discret, Deflection, DrawMode) {
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drawKnots = ShowKnots;
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knotsForm = KnotsShape;
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knotsLook = KnotsColor;
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knotsDim = KnotsSize;
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drawPoles = ShowPoles;
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polesLook = PolesColor;
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}
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void DrawTrSurf_BSplineCurve::DrawOn (Draw_Display& dis) const {
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Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
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if (drawPoles) {
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Standard_Integer NbPoles = C->NbPoles();
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dis.SetColor(polesLook);
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TColgp_Array1OfPnt CPoles (1, NbPoles);
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C->Poles (CPoles);
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dis.MoveTo(CPoles(1));
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for (Standard_Integer i = 2; i <= NbPoles; i++) {
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dis.DrawTo(CPoles(i));
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}
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if (C->IsPeriodic())
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dis.DrawTo(CPoles(1));
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}
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DrawTrSurf_Curve::DrawOn(dis);
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if (drawKnots) {
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Standard_Integer NbKnots = C->NbKnots();
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TColStd_Array1OfReal CKnots (1, NbKnots);
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C->Knots (CKnots);
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dis.SetColor(knotsLook);
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Standard_Integer first = C->FirstUKnotIndex();
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Standard_Integer last = C->LastUKnotIndex();
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for (Standard_Integer i = first; i <= last; i++) {
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dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
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}
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}
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}
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void DrawTrSurf_BSplineCurve::DrawOn (
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Draw_Display& dis,
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const Standard_Boolean ShowPoles,
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const Standard_Boolean ShowKnots
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) const {
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Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
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if (drawPoles && ShowPoles) {
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Standard_Integer NbPoles = C->NbPoles();
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dis.SetColor(polesLook);
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TColgp_Array1OfPnt CPoles (1, NbPoles);
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C->Poles (CPoles);
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dis.MoveTo(CPoles(1));
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for (Standard_Integer i = 2; i <= NbPoles; i++) {
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dis.DrawTo(CPoles(i));
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}
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}
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DrawTrSurf_Curve::DrawOn(dis);
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if (drawKnots && ShowKnots) {
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Standard_Integer NbKnots = C->NbKnots();
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TColStd_Array1OfReal CKnots (1, NbKnots);
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C->Knots (CKnots);
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dis.SetColor(knotsLook);
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for (Standard_Integer i = 1; i <= NbKnots; i++) {
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dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
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}
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}
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}
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void DrawTrSurf_BSplineCurve::DrawOn (
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Draw_Display& dis,
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const Standard_Real U1,
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const Standard_Real U2,
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const Standard_Integer Pindex,
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const Standard_Boolean ShowPoles,
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const Standard_Boolean ShowKnots
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) const {
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Handle(Geom_BSplineCurve) C = Handle(Geom_BSplineCurve)::DownCast(curv);
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Standard_Real Eps1 = Abs(Epsilon (U1));
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Standard_Real Eps2 = Abs(Epsilon (U2));
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Standard_Integer I1, J1, I2, J2;
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C->LocateU (U1, Eps1, I1, J1);
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C->LocateU (U2, Eps2, I2, J2);
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Standard_Integer ka = C->FirstUKnotIndex ();
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Standard_Integer kb = C->LastUKnotIndex ();
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if (drawPoles && ShowPoles) {
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Standard_Integer NbPoles = C->NbPoles();
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dis.SetColor(polesLook);
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TColgp_Array1OfPnt CPoles (1, NbPoles);
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C->Poles (CPoles);
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if (Pindex == 0) {
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dis.MoveTo(CPoles(1));
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for (Standard_Integer i = 2; i <= NbPoles; i++) {
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dis.DrawTo(CPoles(i));
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}
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}
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else if (Pindex == 1) {
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dis.MoveTo(CPoles(1));
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dis.DrawTo(CPoles(2));
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}
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else if (Pindex == NbPoles) {
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dis.MoveTo(CPoles(NbPoles-1));
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dis.DrawTo(CPoles(NbPoles));
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}
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else {
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dis.MoveTo(CPoles(Pindex-1));
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dis.DrawTo(CPoles(Pindex));
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dis.DrawTo(CPoles(Pindex+1));
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}
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}
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dis.SetColor(look);
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Standard_Integer Degree = C->Degree();
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if (Degree == 1) {
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dis.MoveTo(C->Value(U1));
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dis.DrawTo(C->Value(U2));
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}
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else {
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Standard_Integer NbPoints;
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Standard_Integer Discret = GetDiscretisation();
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Standard_Real Ustart = C->Knot (ka);
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Standard_Real Uend = C->Knot (kb);
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Standard_Real Du, U, Ua, Ub, Uk1, Uk2;
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if (I1 > ka) { ka = I1; Uk1 = U1; }
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else {
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U = U1;
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NbPoints = (Standard_Integer) Abs (Discret * (U1 - Ustart) / (Ustart - Uend));
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NbPoints = Max (NbPoints, 30);
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Du = (Ustart - U1) / NbPoints;
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dis.MoveTo(C->Value (U));
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for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
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U+= Du;
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dis.DrawTo(C->Value (U));
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}
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dis.DrawTo(C->Value (Ustart));
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Uk1 = Ustart;
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}
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if (J2 < kb) { kb = J2; Uk2 = U2; }
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else {
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Uk2 = Uend;
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U = Uend;
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NbPoints = (Standard_Integer) Abs (Discret * (U2 - Uend) / (Ustart - Uend));
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NbPoints = Max (NbPoints, 30);
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Du = (U2 - Uend) / NbPoints;
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dis.MoveTo(C->Value (U));
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for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
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U+= Du;
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dis.DrawTo(C->Value (U));
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}
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dis.DrawTo(C->Value (U2));
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}
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for (Standard_Integer k = ka; k < kb; k++) {
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if (k == ka) {
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Ua = Uk1;
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Ub = C->Knot (k+1);
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}
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else if (k == kb-1) {
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Ua = C->Knot (k);
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Ub = Uk2;
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}
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else {
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Ua = C->Knot (k);
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Ub = C->Knot (k+1);
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}
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U = Ua;
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NbPoints = (Standard_Integer) Abs (Discret * (Ua - Ub) / (Ustart - Uend));
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NbPoints = Max (NbPoints, 30);
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Du = (Ub - Ua) / NbPoints;
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dis.MoveTo(C->Value (U));
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for (Standard_Integer i = 1; i <= NbPoints - 2; i++) {
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U+= Du;
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dis.DrawTo(C->Value (U));
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}
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dis.DrawTo(C->Value (Ub));
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}
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}
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if (drawKnots && ShowKnots) {
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Standard_Integer NbKnots = C->NbKnots();
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TColStd_Array1OfReal CKnots (1, NbKnots);
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C->Knots (CKnots);
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dis.SetColor(knotsLook);
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for (Standard_Integer i = J1; i <= I2; i++) {
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dis.DrawMarker (C->Value (CKnots (i)), knotsForm, knotsDim);
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}
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}
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}
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void DrawTrSurf_BSplineCurve::ShowPoles () { drawPoles = Standard_True; }
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void DrawTrSurf_BSplineCurve::ShowKnots () { drawKnots = Standard_True; }
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void DrawTrSurf_BSplineCurve::ClearPoles () { drawPoles = Standard_False; }
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void DrawTrSurf_BSplineCurve::ClearKnots () { drawKnots = Standard_False; }
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void DrawTrSurf_BSplineCurve::FindPole (
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const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real XPrec,
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Standard_Integer& Index) const {
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Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv);
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Standard_Real Prec = XPrec / D.Zoom();
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gp_Pnt2d p1(X/D.Zoom(),Y/D.Zoom());
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Index++;
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Standard_Integer NbPoles = bc->NbPoles();
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while (Index <= NbPoles) {
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if (D.Project(bc->Pole(Index)).Distance(p1) <= Prec)
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return;
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Index++;
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}
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Index = 0;
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}
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void DrawTrSurf_BSplineCurve::FindKnot (
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const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real Prec,
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Standard_Integer& Index) const {
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Handle(Geom_BSplineCurve) bc = Handle(Geom_BSplineCurve)::DownCast(curv);
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gp_Pnt2d p1(X,Y);
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Index++;
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Standard_Integer NbKnots = bc->NbKnots();
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while (Index <= NbKnots) {
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if (D.Project(bc->Value(bc->Knot(Index))).Distance(p1) <= Prec)
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return;
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Index++;
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}
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Index = 0;
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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_BSplineCurve::Copy()const
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{
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Handle(DrawTrSurf_BSplineCurve) DC = new DrawTrSurf_BSplineCurve
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(Handle(Geom_BSplineCurve)::DownCast(curv->Copy()),
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look,polesLook,knotsLook,knotsForm,knotsDim,
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drawPoles,drawKnots,
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GetDiscretisation(),GetDeflection(),GetDrawMode());
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return DC;
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}
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