0023634: Eliminate Polyline and Polygon usage in drawers
[occt.git] / src / DsgPrs / DsgPrs_ConcentricPresentation.cxx
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b311480e 1// Created on: 1996-03-18
2// Created by: Flore Lantheaume
3// Copyright (c) 1996-1999 Matra Datavision
4// Copyright (c) 1999-2012 OPEN CASCADE SAS
5//
6// The content of this file is subject to the Open CASCADE Technology Public
7// License Version 6.5 (the "License"). You may not use the content of this file
8// except in compliance with the License. Please obtain a copy of the License
9// at http://www.opencascade.org and read it completely before using this file.
10//
11// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
13//
14// The Original Code and all software distributed under the License is
15// distributed on an "AS IS" basis, without warranty of any kind, and the
16// Initial Developer hereby disclaims all such warranties, including without
17// limitation, any warranties of merchantability, fitness for a particular
18// purpose or non-infringement. Please see the License for the specific terms
19// and conditions governing the rights and limitations under the License.
20
7fd59977 21
22
23#include <DsgPrs_ConcentricPresentation.ixx>
24
25#include <Graphic3d_Group.hxx>
b8ddfc2f 26#include <Graphic3d_ArrayOfPolylines.hxx>
7fd59977 27#include <Prs3d_LengthAspect.hxx>
28#include <Prs3d_Root.hxx>
29#include <Prs3d_LineAspect.hxx>
30
31#include <gp_Circ.hxx>
32#include <gp_Pnt.hxx>
33#include <gp_Dir.hxx>
34#include <gp_Vec.hxx>
35
36#include <ElCLib.hxx>
37
38void DsgPrs_ConcentricPresentation::Add(
39 const Handle(Prs3d_Presentation)& aPresentation,
40 const Handle(Prs3d_Drawer)& aDrawer,
41 const gp_Pnt& aCenter,
42 const Standard_Real aRadius,
43 const gp_Dir& aNorm,
44 const gp_Pnt& aPoint)
45{
46 Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
47
48 //Creation et discretisation du plus gros cercle
49 gp_Circ Circ(gp_Ax2(aCenter,aNorm), aRadius);
b8ddfc2f 50 const Standard_Integer nbp = 50;
51 const Standard_Real dteta = (2. * M_PI)/nbp;
52
53 Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
54
55 Handle(Graphic3d_ArrayOfPolylines) aPrims = new Graphic3d_ArrayOfPolylines(2*nbp+6,4);
56
57 gp_Pnt pt1 = ElCLib::Value(0., Circ);
58 aPrims->AddBound(nbp+1);
59 aPrims->AddVertex(pt1);
60 Standard_Real ucur = dteta;
7fd59977 61 Standard_Integer i ;
b8ddfc2f 62 for (i = 2; i<=nbp; i++, ucur += dteta)
63 aPrims->AddVertex(ElCLib::Value(ucur, Circ));
64 aPrims->AddVertex(pt1);
7fd59977 65
66 //Creation et discretisation du plus petit cercle
b8ddfc2f 67 Circ.SetRadius(0.5*aRadius);
68 pt1 = ElCLib::Value(0., Circ);
69 aPrims->AddBound(nbp+1);
70 aPrims->AddVertex(pt1);
71 ucur = dteta;
72 for (i = 2; i<=nbp; i++, ucur += dteta)
73 aPrims->AddVertex(ElCLib::Value(ucur, Circ));
74 aPrims->AddVertex(pt1);
7fd59977 75
76 //Creation de la croix
77 //1er segment
b8ddfc2f 78 gp_Dir vecnorm(aPoint.XYZ() - aCenter.XYZ());
7fd59977 79 gp_Vec vec(vecnorm);
80 vec.Multiply(aRadius);
81 gp_Pnt p1 = aCenter.Translated(vec);
82 gp_Pnt p2 = aCenter.Translated(-vec);
b8ddfc2f 83
84 aPrims->AddBound(2);
85 aPrims->AddVertex(p1);
86 aPrims->AddVertex(p2);
7fd59977 87
88 //2ieme segment
89 vec.Cross(aNorm);
90 vecnorm.SetCoord(vec.X(), vec.Y(), vec.Z() );
91 vec.SetXYZ(vecnorm.XYZ());
92 vec.Multiply(aRadius);
93 p1 = aCenter.Translated(vec);
94 p2 = aCenter.Translated(-vec);
7fd59977 95
b8ddfc2f 96 aPrims->AddBound(2);
97 aPrims->AddVertex(p1);
98 aPrims->AddVertex(p2);
7fd59977 99
b8ddfc2f 100 Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977 101}