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// File: DrawDim.cxx
// Created: Wed Jan 10 14:26:40 1996
// Author: Denis PASCAL
// <dp@zerox>
#include <DrawDim.ixx>
#include <Draw_Text3D.hxx>
#include <gp_Pnt.hxx>
#include <TCollection_AsciiString.hxx>
#include <Geom_Curve.hxx>
#include <BRep_Tool.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopAbs.hxx>
#include <Geom_Line.hxx>
#include <Geom_Circle.hxx>
#include <Geom_Plane.hxx>
#include <ElCLib.hxx>
#include <Draw.hxx>
#include <Draw_Appli.hxx>
#include <TopoDS_Vertex.hxx>
#ifdef WNT
Standard_IMPORT Draw_Viewer dout;
#endif
//=======================================================================
//function : AllCommands
//purpose :
//=======================================================================
void DrawDim::AllCommands (Draw_Interpretor& theCommands)
{
PlanarDimensionCommands (theCommands);
}
//=======================================================================
//function : DrawShapeName
//purpose :
//=======================================================================
void DrawDim::DrawShapeName (const TopoDS_Shape& ashape,
const Standard_CString aname)
{
gp_Pnt position;
TCollection_AsciiString t (" ");
switch (ashape.ShapeType()) {
case TopAbs_EDGE :
{
Standard_Real f,l,parameter;
Handle(Geom_Curve) curve = BRep_Tool::Curve(TopoDS::Edge(ashape),f,l);
if (curve->IsKind(STANDARD_TYPE(Geom_Line))) {
parameter = (f+l)/2.;
position = ElCLib::Value(parameter,Handle(Geom_Line)::DownCast(curve)->Lin());
}
else if (curve->IsKind(STANDARD_TYPE(Geom_Circle))) {
parameter = (f+l)/2.;
if (f > l) parameter = parameter + PI;
position = ElCLib::Value(parameter,Handle(Geom_Circle)::DownCast(curve)->Circ());
}
}
break;
case TopAbs_VERTEX :
{
position = BRep_Tool::Pnt(TopoDS::Vertex(ashape));
}
break;
#ifndef DEB
default:
break;
#endif
}
t+=aname; //Name();
Handle(Draw_Text3D) text = new Draw_Text3D (position,t.ToCString(),Draw_blanc);
dout << text;
}
//=======================================================================
//function : Pln
//purpose :
//=======================================================================
Standard_Boolean DrawDim::Pln (const TopoDS_Face& f, gp_Pln& p)
{
Handle(Geom_Plane) P = Handle(Geom_Plane)::DownCast(BRep_Tool::Surface(f));
if (!P.IsNull()) {
p = P->Pln();
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : Lin
//purpose :
//=======================================================================
Standard_Boolean DrawDim::Lin (const TopoDS_Edge& e,
gp_Lin& l,
Standard_Boolean& infinite,
Standard_Real& first,
Standard_Real& last)
{
Standard_Real f1,l1;
Handle(Geom_Line) L = Handle(Geom_Line)::DownCast(BRep_Tool::Curve(e,f1,l1));
if (!L.IsNull()) {
TopoDS_Vertex vf, vl;
TopExp::Vertices(TopoDS::Edge(e),vf,vl);
if (vf.IsNull() && vl.IsNull()) {
infinite = Standard_True;
l = L->Lin();
return Standard_True;
}
else if (vf.IsNull() || vl.IsNull()) {
Standard_DomainError::Raise("DrawDim::Lin : semi infinite edge");
}
else {
l = L->Lin();
infinite = Standard_True;
first = f1;
last = l1;
return Standard_True;
}
}
return Standard_False;
}
//=======================================================================
//function : Lin
//purpose :
//=======================================================================
Standard_Boolean DrawDim::Circ (const TopoDS_Edge& e,
gp_Circ& c,
Standard_Real& first,
Standard_Real& last)
{
Standard_Real f1,l1;
Handle(Geom_Circle) C = Handle(Geom_Circle)::DownCast(BRep_Tool::Curve(e,f1,l1));
if (!C.IsNull()) {
c = C->Circ();
first = f1;
last = l1;
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : Nearest
//purpose :
//=======================================================================
gp_Pnt DrawDim::Nearest(const TopoDS_Shape& ashape, const gp_Pnt& apoint)
{
Standard_Real dist = RealLast();
Standard_Real curdist;
gp_Pnt result;
gp_Pnt curpnt;
TopExp_Explorer explo(ashape,TopAbs_VERTEX);
while (explo.More()) {
curpnt = BRep_Tool::Pnt(TopoDS::Vertex(explo.Current()));
curdist = apoint.Distance(curpnt);
if (curdist < dist) {
result = curpnt;
dist = curdist;
}
explo.Next();
}
return result;
}
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