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// File: StdPrs_WFDeflectionSurface.cxx
// Created: Mon Jul 24 17:25:12 1995
// Author: Modelistation
// <model@metrox>
#include <StdPrs_WFDeflectionSurface.ixx>
#include <Graphic3d_Group.hxx>
#include <GeomAbs_IsoType.hxx>
#include <Prs3d_IsoAspect.hxx>
#include <Bnd_Box.hxx>
#include <BndLib_AddSurface.hxx>
#include <Precision.hxx>
#include <gp_Pnt.hxx>
#include <Adaptor3d_IsoCurve.hxx>
#include <StdPrs_DeflectionCurve.hxx>
static void FindLimits(const Handle(Adaptor3d_HSurface)& surf ,
const Standard_Real aLimit,
Standard_Real& UFirst,
Standard_Real& ULast,
Standard_Real& VFirst,
Standard_Real& VLast)
{
UFirst = surf->FirstUParameter();
ULast = surf->LastUParameter();
VFirst = surf->FirstVParameter();
VLast = surf->LastVParameter();
Standard_Boolean UfirstInf = Precision::IsNegativeInfinite(UFirst);
Standard_Boolean UlastInf = Precision::IsPositiveInfinite(ULast);
Standard_Boolean VfirstInf = Precision::IsNegativeInfinite(VFirst);
Standard_Boolean VlastInf = Precision::IsPositiveInfinite(VLast);
if (UfirstInf || UlastInf) {
gp_Pnt P1,P2;
Standard_Real v;
if (VfirstInf && VlastInf)
v = 0;
else if (VfirstInf)
v = VLast;
else if (VlastInf)
v = VFirst;
else
v = (VFirst + VLast) / 2;
Standard_Real delta = aLimit * 2;
if (UfirstInf && UlastInf) {
do {
delta /= 2;
UFirst = - delta;
ULast = delta;
surf->D0(UFirst,v,P1);
surf->D0(ULast,v,P2);
} while (P1.Distance(P2) > aLimit);
}
else if (UfirstInf) {
surf->D0(ULast,v,P2);
do {
delta /= 2;
UFirst = ULast - delta;
surf->D0(UFirst,v,P1);
} while (P1.Distance(P2) > aLimit);
}
else if (UlastInf) {
surf->D0(UFirst,v,P1);
do {
delta /= 2;
ULast = UFirst + delta;
surf->D0(ULast,v,P2);
} while (P1.Distance(P2) > aLimit);
}
}
if (VfirstInf || VlastInf) {
gp_Pnt P1,P2;
Standard_Real u = (UFirst + ULast) /2 ;
Standard_Real delta = aLimit * 2;
if (VfirstInf && VlastInf) {
do {
delta /= 2;
VFirst = - delta;
VLast = delta;
surf->D0(u,VFirst,P1);
surf->D0(u,VLast,P2);
} while (P1.Distance(P2) > aLimit);
}
else if (VfirstInf) {
surf->D0(u,VLast,P2);
do {
delta /= 2;
VFirst = VLast - delta;
surf->D0(u,VFirst,P1);
} while (P1.Distance(P2) > aLimit);
}
else if (VlastInf) {
surf->D0(u,VFirst,P1);
do {
delta /= 2;
VLast = VFirst + delta;
surf->D0(u,VLast,P2);
} while (P1.Distance(P2) > aLimit);
}
}
}
//=======================================================================
//function : Add
//purpose :
//=======================================================================
void StdPrs_WFDeflectionSurface::Add (
const Handle (Prs3d_Presentation)& aPresentation,
const Handle(Adaptor3d_HSurface)& aSurface,
const Handle (Prs3d_Drawer)& aDrawer)
{
Standard_Real U1, U2, V1, V2;
Standard_Real MaxP = aDrawer->MaximalParameterValue();
FindLimits(aSurface, MaxP, U1, U2, V1, V2);
Standard_Boolean UClosed = aSurface->IsUClosed();
Standard_Boolean VClosed = aSurface->IsVClosed();
Standard_Real TheDeflection;
Aspect_TypeOfDeflection TOD = aDrawer->TypeOfDeflection();
if (TOD == Aspect_TOD_RELATIVE) {
// On calcule la fleche en fonction des min max globaux de la piece:
Bnd_Box Total;
BndLib_AddSurface::Add(aSurface->Surface(),U1, U2, V1, V2, 0.,Total);
Standard_Real m = aDrawer->MaximalChordialDeviation()/
aDrawer->DeviationCoefficient();
Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax;
Total.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
if ( ! (Total.IsOpenXmin() || Total.IsOpenXmax() ))
m = Min ( m , Abs (aXmax-aXmin));
if ( ! (Total.IsOpenYmin() || Total.IsOpenYmax() ))
m = Min ( m , Abs (aYmax-aYmin));
if ( ! (Total.IsOpenZmin() || Total.IsOpenZmax() ))
m = Min ( m , Abs (aZmax-aZmin));
TheDeflection = m * aDrawer->DeviationCoefficient();
}
else
TheDeflection = aDrawer->MaximalChordialDeviation();
Adaptor3d_IsoCurve anIso;
anIso.Load(aSurface);
// Trace des frontieres.
// *********************
//
if ( !(UClosed && VClosed) ) {
(Prs3d_Root::CurrentGroup(aPresentation))->SetPrimitivesAspect
(aDrawer->FreeBoundaryAspect()->Aspect());
if ( !UClosed )
{
anIso.Load(GeomAbs_IsoU,U1,V1,V2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
anIso.Load(GeomAbs_IsoU,U2,V1,V2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
}
if ( !VClosed )
{
anIso.Load(GeomAbs_IsoV,V1,U1,U2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
anIso.Load(GeomAbs_IsoV,V2,U1,U2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
}
}
//
// Trace des isoparametriques.
// ***************************
//
Standard_Integer fin = aDrawer->UIsoAspect()->Number();
if ( fin != 0) {
(Prs3d_Root::CurrentGroup(aPresentation))->SetPrimitivesAspect
(aDrawer->UIsoAspect()->Aspect());
Standard_Real du= UClosed ? (U2-U1)/fin : (U2-U1)/(1+fin);
for (Standard_Integer i=1; i<=fin;i++){
anIso.Load(GeomAbs_IsoU,U1+du*i,V1,V2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
}
}
fin = aDrawer->VIsoAspect()->Number();
if ( fin != 0) {
(Prs3d_Root::CurrentGroup(aPresentation))->SetPrimitivesAspect
(aDrawer->VIsoAspect()->Aspect());
Standard_Real dv= VClosed ?(V2-V1)/fin : (V2-V1)/(1+fin);
for (Standard_Integer i=1; i<=fin;i++){
anIso.Load(GeomAbs_IsoV,V1+dv*i,U1,U2);
StdPrs_DeflectionCurve::Add(aPresentation,anIso,TheDeflection, MaxP);
}
}
}
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