[occt.git] / src / DrawTrSurf / DrawTrSurf_Drawable.cxx

// Created on: 1991-07-16
// Created by: Christophe MARION
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <Adaptor2d_Curve2d.hxx>
#include <Adaptor3d_IsoCurve.hxx>
#include <Draw_Display.hxx>
#include <DrawTrSurf_Drawable.hxx>
#include <GCPnts_UniformDeflection.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Geom_BezierCurve.hxx>
#include <GeomAdaptor_Curve.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <Precision.hxx>
#include <Standard_Type.hxx>
#include <TColStd_Array1OfReal.hxx>

IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_Drawable,Draw_Drawable3D)

//=======================================================================
//function : DrawTrSurf_Drawable
//purpose  : initialise the discretisation
//=======================================================================
DrawTrSurf_Drawable::DrawTrSurf_Drawable (

const Standard_Integer discret,
const Standard_Real    deflection,
const Standard_Integer DrawMode ) :
       myDrawMode (DrawMode),
       myDiscret(discret),
       myDeflection(deflection)
{
}

//=======================================================================
//function : DrawCurve2dOn
//purpose  : draw a 2D curve
//=======================================================================

void DrawTrSurf_Drawable::DrawCurve2dOn (Adaptor2d_Curve2d&   C, 
					 Draw_Display& aDisplay) const
{
  gp_Pnt P;
  
  gp_Pnt2d aPoint2d,
  *aPoint2dPtr ;
  if (myDrawMode == 1) {
    Standard_Real Fleche = myDeflection/aDisplay.Zoom();
    GCPnts_UniformDeflection LineVu(C,Fleche);
    if (LineVu.IsDone()) {
      P = LineVu.Value(1) ;
      aPoint2dPtr = (gp_Pnt2d *) &P ;
      aDisplay.MoveTo(*aPoint2dPtr);
      for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++) {
        P = LineVu.Value(i) ;
        aPoint2dPtr = (gp_Pnt2d *) &P ;
	aDisplay.DrawTo(*aPoint2dPtr);
      }
    }  
  }
  else {
    Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN);
    TColStd_Array1OfReal TI(1,nbintv+1);
    C.Intervals(TI,GeomAbs_CN);
    C.D0(C.FirstParameter(),aPoint2d);
    aDisplay.MoveTo(aPoint2d);
    for (intrv = 1; intrv <= nbintv; intrv++) {
      if (C.GetType() != GeomAbs_Line) {
	Standard_Real t = TI(intrv);
	Standard_Real step = (TI(intrv+1) - t) / myDiscret;
	for (Standard_Integer i = 1; i < myDiscret; i++) {
	  t += step;
	  C.D0(t,aPoint2d);
	  aDisplay.DrawTo(aPoint2d);
	}
      }
      C.D0(TI(intrv+1),aPoint2d);
      aDisplay.DrawTo(aPoint2d);
    }
  }
}

//=======================================================================
//static function : PlotCurve
//purpose  : draw a 3D curve
//=======================================================================
static void PlotCurve (Draw_Display& aDisplay,
		       const Adaptor3d_Curve& C, 
		       Standard_Real& theFirstParam, 
		       Standard_Real  theHalfStep,
		       const gp_Pnt&  theFirstPnt,
		       const gp_Pnt&  theLastPnt)
{
  Standard_Real IsoRatio = 1.001;
  gp_Pnt Pm;

  C.D0 (theFirstParam + theHalfStep, Pm);
  
  Standard_Real dfLength = theFirstPnt.Distance(theLastPnt);
  if (dfLength < Precision::Confusion() || 
      Pm.Distance(theFirstPnt) + Pm.Distance(theLastPnt) <= IsoRatio*dfLength) {
    aDisplay.DrawTo (theLastPnt);
  } else {
    PlotCurve (aDisplay, C, theFirstParam, theHalfStep/2., theFirstPnt, Pm);
    Standard_Real aLocalF = theFirstParam + theHalfStep;
    PlotCurve (aDisplay, C, aLocalF, theHalfStep/2., Pm, theLastPnt);
  }
}
//=======================================================================
//function : DrawCurveOn
//purpose  : draw a 3D curve
//=======================================================================

void DrawTrSurf_Drawable::DrawCurveOn (Adaptor3d_Curve&   C, 
                                       Draw_Display& aDisplay) const
{
  gp_Pnt P;
  if (myDrawMode == 1)
  {
    Standard_Real Fleche = myDeflection/aDisplay.Zoom();
    GCPnts_UniformDeflection LineVu(C,Fleche);
    if (LineVu.IsDone())
    {
      aDisplay.MoveTo(LineVu.Value(1));
      for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++)
      {
        aDisplay.DrawTo(LineVu.Value(i));
      }
    }
  }
  else
  {
    Standard_Integer j;
    Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN);
    TColStd_Array1OfReal TI(1,nbintv+1);
    C.Intervals(TI,GeomAbs_CN);
    C.D0(C.FirstParameter(),P);
    aDisplay.MoveTo(P);
    GeomAbs_CurveType CurvType = C.GetType();
    gp_Pnt aPPnt=P, aNPnt;

    for (intrv = 1; intrv <= nbintv; intrv++)
    {
      Standard_Real t = TI(intrv);
      Standard_Real step = (TI(intrv+1) - t) / myDiscret;

      switch (CurvType)
      {
      case GeomAbs_Line:
        break;
      case GeomAbs_Circle:
      case GeomAbs_Ellipse:
        for (j = 1; j < myDiscret; j++)
        {
          t += step;
          C.D0(t,P);
          aDisplay.DrawTo(P);
        }
        break;
      case GeomAbs_Parabola:
      case GeomAbs_Hyperbola:
      case GeomAbs_BezierCurve:
      case GeomAbs_BSplineCurve:
      case GeomAbs_OffsetCurve:
      case GeomAbs_OtherCurve:
        const Standard_Integer nIter = myDiscret/2;
        for (j = 1; j < nIter; j++)
        {
          const Standard_Real t1 = t+step*2.;
          C.D0 (t1, aNPnt);
          PlotCurve (aDisplay, C, t, step, aPPnt, aNPnt);
          aPPnt = aNPnt;
          t = t1;
        }

        break;
      }

      C.D0(TI(intrv+1),P);
      PlotCurve (aDisplay, C, t, step, aPPnt, P);
      aDisplay.DrawTo(P);
    }
  }
}


//=======================================================================
//function : DrawIsoCurveOn
//purpose  : 
//=======================================================================

void DrawTrSurf_Drawable::DrawIsoCurveOn(Adaptor3d_IsoCurve& C,
					 const GeomAbs_IsoType T,
					 const Standard_Real P,
					 const Standard_Real F,
					 const Standard_Real L,
					 Draw_Display& dis) const 
{
  C.Load(T,P,F,L);
  if ((C.GetType() == GeomAbs_BezierCurve) || 
      (C.GetType() == GeomAbs_BSplineCurve)) {
    GeomAdaptor_Curve GC;
    if (C.GetType() == GeomAbs_BezierCurve) 
      GC.Load(C.Bezier(),F,L);
    else
      GC.Load(C.BSpline(),F,L);
    
    DrawCurveOn(GC,dis);
  }
  else
    DrawCurveOn(C,dis);
  
}
Commit	Line	Data
b311480e	1	// Created on: 1991-07-16
	2	// Created by: Christophe MARION
	3	// Copyright (c) 1991-1999 Matra Datavision
973c2be1	4	// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e	5	//
973c2be1	6	// This file is part of Open CASCADE Technology software library.
b311480e	7	//
d5f74e42	8	// This library is free software; you can redistribute it and/or modify it under
d5f74e42	9	// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1	10	// by the Free Software Foundation, with special exception defined in the file
	11	// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
	12	// distribution for complete text of the license and disclaimer of any warranty.
b311480e	13	//
973c2be1	14	// Alternatively, this file may be used under the terms of Open CASCADE
973c2be1	15	// commercial license or contractual agreement.
7fd59977	16
42cf5bc1	17
42cf5bc1	18	#include <Adaptor2d_Curve2d.hxx>
42cf5bc1	19	#include <Adaptor3d_IsoCurve.hxx>
	20	#include <Draw_Display.hxx>
	21	#include <DrawTrSurf_Drawable.hxx>
7fd59977	22	#include <GCPnts_UniformDeflection.hxx>
7fd59977	23	#include <Geom_BSplineCurve.hxx>
7109a4ae	24	#include <Geom_BezierCurve.hxx>
42cf5bc1	25	#include <GeomAdaptor_Curve.hxx>
	26	#include <gp_Pnt.hxx>
	27	#include <gp_Pnt2d.hxx>
7fd59977	28	#include <Precision.hxx>
42cf5bc1	29	#include <Standard_Type.hxx>
42cf5bc1	30	#include <TColStd_Array1OfReal.hxx>
7fd59977	31
92efcf78	32	IMPLEMENT_STANDARD_RTTIEXT(DrawTrSurf_Drawable,Draw_Drawable3D)
92efcf78	33
7fd59977	34	//=======================================================================
	35	//function : DrawTrSurf_Drawable
	36	//purpose : initialise the discretisation
	37	//=======================================================================
7fd59977	38	DrawTrSurf_Drawable::DrawTrSurf_Drawable (
	39
	40	const Standard_Integer discret,
	41	const Standard_Real deflection,
	42	const Standard_Integer DrawMode ) :
	43	myDrawMode (DrawMode),
	44	myDiscret(discret),
	45	myDeflection(deflection)
	46	{
	47	}
	48
	49	//=======================================================================
	50	//function : DrawCurve2dOn
	51	//purpose : draw a 2D curve
	52	//=======================================================================
	53
	54	void DrawTrSurf_Drawable::DrawCurve2dOn (Adaptor2d_Curve2d& C,
	55	Draw_Display& aDisplay) const
	56	{
	57	gp_Pnt P;
	58
	59	gp_Pnt2d aPoint2d,
	60	*aPoint2dPtr ;
	61	if (myDrawMode == 1) {
	62	Standard_Real Fleche = myDeflection/aDisplay.Zoom();
	63	GCPnts_UniformDeflection LineVu(C,Fleche);
	64	if (LineVu.IsDone()) {
	65	P = LineVu.Value(1) ;
	66	aPoint2dPtr = (gp_Pnt2d *) &P ;
	67	aDisplay.MoveTo(*aPoint2dPtr);
	68	for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++) {
	69	P = LineVu.Value(i) ;
	70	aPoint2dPtr = (gp_Pnt2d *) &P ;
	71	aDisplay.DrawTo(*aPoint2dPtr);
	72	}
	73	}
	74	}
	75	else {
	76	Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN);
	77	TColStd_Array1OfReal TI(1,nbintv+1);
	78	C.Intervals(TI,GeomAbs_CN);
	79	C.D0(C.FirstParameter(),aPoint2d);
	80	aDisplay.MoveTo(aPoint2d);
	81	for (intrv = 1; intrv <= nbintv; intrv++) {
	82	if (C.GetType() != GeomAbs_Line) {
	83	Standard_Real t = TI(intrv);
	84	Standard_Real step = (TI(intrv+1) - t) / myDiscret;
	85	for (Standard_Integer i = 1; i < myDiscret; i++) {
	86	t += step;
	87	C.D0(t,aPoint2d);
	88	aDisplay.DrawTo(aPoint2d);
	89	}
	90	}
	91	C.D0(TI(intrv+1),aPoint2d);
	92	aDisplay.DrawTo(aPoint2d);
	93	}
	94	}
	95	}
	96
	97	//=======================================================================
	98	//static function : PlotCurve
	99	//purpose : draw a 3D curve
	100	//=======================================================================
	101	static void PlotCurve (Draw_Display& aDisplay,
102	const Adaptor3d_Curve& C,
103	Standard_Real& theFirstParam,
104	Standard_Real theHalfStep,
105	const gp_Pnt& theFirstPnt,
106	const gp_Pnt& theLastPnt)
107	{
108	Standard_Real IsoRatio = 1.001;
109	gp_Pnt Pm;
110
111	C.D0 (theFirstParam + theHalfStep, Pm);
112
113	Standard_Real dfLength = theFirstPnt.Distance(theLastPnt);
114	if (dfLength < Precision::Confusion() \|\|
115	Pm.Distance(theFirstPnt) + Pm.Distance(theLastPnt) <= IsoRatio*dfLength) {
116	aDisplay.DrawTo (theLastPnt);
117	} else {
118	PlotCurve (aDisplay, C, theFirstParam, theHalfStep/2., theFirstPnt, Pm);
119	Standard_Real aLocalF = theFirstParam + theHalfStep;
120	PlotCurve (aDisplay, C, aLocalF, theHalfStep/2., Pm, theLastPnt);
121	}
122	}
123	//=======================================================================
124	//function : DrawCurveOn
125	//purpose : draw a 3D curve
126	//=======================================================================
127
128	void DrawTrSurf_Drawable::DrawCurveOn (Adaptor3d_Curve& C,
32ca7a51	129	Draw_Display& aDisplay) const
7fd59977	130	{
7fd59977	131	gp_Pnt P;
32ca7a51	132	if (myDrawMode == 1)
32ca7a51	133	{
7fd59977	134	Standard_Real Fleche = myDeflection/aDisplay.Zoom();
7fd59977	135	GCPnts_UniformDeflection LineVu(C,Fleche);
32ca7a51	136	if (LineVu.IsDone())
32ca7a51	137	{
7fd59977	138	aDisplay.MoveTo(LineVu.Value(1));
32ca7a51	139	for (Standard_Integer i = 2; i <= LineVu.NbPoints(); i++)
	140	{
	141	aDisplay.DrawTo(LineVu.Value(i));
7fd59977	142	}
32ca7a51	143	}
7fd59977	144	}
32ca7a51	145	else
	146	{
	147	Standard_Integer j;
7fd59977	148	Standard_Integer intrv, nbintv = C.NbIntervals(GeomAbs_CN);
	149	TColStd_Array1OfReal TI(1,nbintv+1);
	150	C.Intervals(TI,GeomAbs_CN);
	151	C.D0(C.FirstParameter(),P);
	152	aDisplay.MoveTo(P);
	153	GeomAbs_CurveType CurvType = C.GetType();
	154	gp_Pnt aPPnt=P, aNPnt;
	155
32ca7a51	156	for (intrv = 1; intrv <= nbintv; intrv++)
32ca7a51	157	{
7fd59977	158	Standard_Real t = TI(intrv);
	159	Standard_Real step = (TI(intrv+1) - t) / myDiscret;
	160
32ca7a51	161	switch (CurvType)
	162	{
	163	case GeomAbs_Line:
	164	break;
	165	case GeomAbs_Circle:
	166	case GeomAbs_Ellipse:
	167	for (j = 1; j < myDiscret; j++)
	168	{
	169	t += step;
	170	C.D0(t,P);
	171	aDisplay.DrawTo(P);
	172	}
	173	break;
	174	case GeomAbs_Parabola:
	175	case GeomAbs_Hyperbola:
	176	case GeomAbs_BezierCurve:
	177	case GeomAbs_BSplineCurve:
1aec3320	178	case GeomAbs_OffsetCurve:
32ca7a51	179	case GeomAbs_OtherCurve:
	180	const Standard_Integer nIter = myDiscret/2;
	181	for (j = 1; j < nIter; j++)
	182	{
	183	const Standard_Real t1 = t+step*2.;
	184	C.D0 (t1, aNPnt);
7fd59977	185	PlotCurve (aDisplay, C, t, step, aPPnt, aNPnt);
32ca7a51	186	aPPnt = aNPnt;
	187	t = t1;
	188	}
	189
	190	break;
7fd59977	191	}
	192
	193	C.D0(TI(intrv+1),P);
32ca7a51	194	PlotCurve (aDisplay, C, t, step, aPPnt, P);
7fd59977	195	aDisplay.DrawTo(P);
	196	}
	197	}
	198	}
	199
	200
	201	//=======================================================================
	202	//function : DrawIsoCurveOn
	203	//purpose :
	204	//=======================================================================
	205
	206	void DrawTrSurf_Drawable::DrawIsoCurveOn(Adaptor3d_IsoCurve& C,
	207	const GeomAbs_IsoType T,
	208	const Standard_Real P,
	209	const Standard_Real F,
	210	const Standard_Real L,
	211	Draw_Display& dis) const
	212	{
	213	C.Load(T,P,F,L);
	214	if ((C.GetType() == GeomAbs_BezierCurve) \|\|
	215	(C.GetType() == GeomAbs_BSplineCurve)) {
	216	GeomAdaptor_Curve GC;
	217	if (C.GetType() == GeomAbs_BezierCurve)
	218	GC.Load(C.Bezier(),F,L);
	219	else
	220	GC.Load(C.BSpline(),F,L);
	221
	222	DrawCurveOn(GC,dis);
	223	}
	224	else
	225	DrawCurveOn(C,dis);
	226
	227	}