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#include <Prs3d_AnglePresentation.ixx>
#include <gp_Lin.hxx>
#include <gp_Dir.hxx>
#include <ElCLib.hxx>
#include <Graphic3d_Group.hxx>
#include <Prs3d_Arrow.hxx>
#include <Prs3d_ArrowAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Prs3d_AngleAspect.hxx>
#include <TCollection_AsciiString.hxx>
#include <Graphic3d_AspectMarker3d.hxx>
#include <Graphic3d_AspectLine3d.hxx>
#include <Graphic3d_Array1OfVertex.hxx>
#include <Prs3d_Text.hxx>
void Prs3d_AnglePresentation::Draw (
const Handle(Prs3d_Presentation)& aPresentation,
const Handle(Prs3d_Drawer)& aDrawer,
const TCollection_ExtendedString& aText,
const gp_Pnt& AttachmentPoint1,
const gp_Pnt& AttachmentPoint2,
const gp_Pnt& AttachmentPoint3,
const gp_Pnt& OffsetPoint) {
Handle(Prs3d_AngleAspect) AA = aDrawer->AngleAspect();
Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(AA->LineAspect()->Aspect());
gp_Vec V1 (AttachmentPoint1,AttachmentPoint2);
gp_Vec V2 (AttachmentPoint1,AttachmentPoint3);
Standard_Real alpha = V1.Angle(V2);
Standard_Real ray = AttachmentPoint1.Distance(OffsetPoint);
gp_Dir I (V1);
gp_Dir K = I.Crossed(gp_Dir(V2));
gp_Dir J = K.Crossed(I);
//
Standard_Real xc,yc,zc;
AttachmentPoint1.Coord(xc,yc,zc);
Graphic3d_Array1OfVertex V(1,2);
Standard_Real x1,y1,z1,x2,y2,z2;
AttachmentPoint2.Coord(x1,y1,z1);
AttachmentPoint3.Coord(x2,y2,z2);
Standard_Integer nbp = Max (4 , Standard_Integer (50. * alpha / PI));
Standard_Real dteta = alpha/(nbp-1);
Standard_Real x,y,z;
gp_Vec u;
for (Standard_Integer i = 1; i<=nbp; i++) {
u = (gp_Vec(I) * Cos ( (i-1) * dteta)
+ gp_Vec(J) * Sin ( (i-1) * dteta)) * ray ;
u.Coord(x,y,z);
if(i == 1) {
V(1).SetCoord( xc + x, yc + y, zc + z);
V(2).SetCoord( x1,y1,z1);
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);}
else {
V(2).SetCoord( xc + x, yc + y, zc + z);
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
if( i == nbp ) {
Standard_Real a1,b1,c1,a2,b2,c2;
V(1).Coord(a1,b1,c1); gp_Pnt pt1(a1,b1,c1);
V(2).Coord(a2,b2,c2); gp_Pnt pt2(a2,b2,c2);
gp_Dir dir( gp_Vec(pt1 , pt2) );
Prs3d_Arrow::Draw(aPresentation,pt2,dir,AA->ArrowAspect()->Angle(),
AA->ArrowAspect()->Length());
}
V(1)=V(2);
}
}
V(2).SetCoord(x2,y2,z2);
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
u = (gp_Vec(I) * Cos ( alpha/2.)
+ gp_Vec(J) * Sin ( alpha/2.)) * ray ;
u.Coord(x,y,z);
Prs3d_Text::Draw(aPresentation,AA->TextAspect(),aText,
gp_Pnt(xc+x,yc+y,zc+z));
}
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