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#include <Precision.hxx>
#include <TColStd_Array2OfReal.hxx>
Approx_ComputeCSurface::Approx_ComputeCSurface(
const Surface& Surf,
const Standard_Integer degreemin,
const Standard_Integer degreemax,
const Standard_Real Tolerance3d,
const AppParCurves_Constraint FirstCons,
const AppParCurves_Constraint LastUCons,
const AppParCurves_Constraint LastVCons,
const AppParCurves_Constraint LastCons,
const Standard_Boolean cutting)
{
mydegremin = degreemin;
mydegremax = degreemax;
mytol3d = Tolerance3d;
myfirstUCons = FirstCons;
mylastUCons = LastUCons;
mylastVCons = LastVCons;
mylastCons = LastCons;
mycut = cutting;
Perform(Surf);
}
Approx_ComputeCSurface::Approx_ComputeCSurface(
const Standard_Integer degreemin,
const Standard_Integer degreemax,
const Standard_Real Tolerance3d,
const AppParCurves_Constraint FirstCons,
const AppParCurves_Constraint LastUCons,
const AppParCurves_Constraint LastVCons,
const AppParCurves_Constraint LastCons,
const Standard_Boolean cutting)
{
mydegremin = degreemin;
mydegremax = degreemax;
mytol3d = Tolerance3d;
myfirstUCons = FirstCons;
mylastUCons = LastUCons;
mylastVCons = LastVCons;
mylastCons = LastCons;
mycut = cutting;
}
void Approx_ComputeCSurface::Perform(const Surface& Surf)
{
Standard_Real UFirst, ULast, VFirst, VLast;
UFirst = SurfaceTool::FirstUParameter(Surf);
ULast = SurfaceTool::LastUParameter(Surf);
VFirst = SurfaceTool::FirstVParameter(Surf);
VLast = SurfaceTool::LastVParameter(Surf);
Standard_Boolean Finish = Standard_False,
begin = Standard_True, Ok = Standard_False;
Standard_Real thetol3d;
Standard_Real myfirstU = UFirst, mylastU = ULast;
Standard_Real myfirstV = VFirst, mylastV = VLast;
Standard_Integer i;
TColStd_Array2OfReal Error(1, 50, 1, 50); // pour l instant
if (!mycut) {
alldone = Compute(Surf, UFirst, ULast, VFirst, VLast, thetol3d);
if (!alldone) {
tolreached = Standard_False;
mySurfaces.Append(TheSurface);
Tolers3d.Append(thetol3d);
myfirstUparam.Append(UFirst);
mylastUparam.Append(ULast);
myfirstVparam.Append(VFirst);
mylastVparam.Append(VLast);
}
}
else { // gestion du decoupage:
TColStd_SequenceOfReal TheU, TheV;
TheU.Append(UFirst);
TheU.Append(ULast);
TheV.Append(VFirst);
TheV.Append(VLast);
while (!Finish) {
Ok = Compute(Surf, myfirstU, mylastU, myfirstV, mylastV, thetol3d);
if (Ok) {
if (Abs(ULast-mylastU) <= Precision::PConfusion() &&
Abs(VLast-mylastV) <= Precision::PConfusion()) {
Finish = Standard_True;
alldone = Standard_True;
return;
}
myfirstU = mylastU;
mylastU = ULast;
}
else {
// choix du decoupage en u ou en v:
// si debut, en u:
if (begin) {
begin = Standard_False;
mylastU = (myfirstU + mylastU)/2.;
TheU.InsertAfter(1, mylastU);
Error.SetValue(1, 1, currenttol3d);
}
else {
Standard_Real tolu, tolv;
for (i = 1; i <= TheU.Length(); i++) {
}
}
}
}
}
}
Standard_Boolean Approx_ComputeCSurface::Compute(const Surface& Surf,
const Standard_Real Ufirst,
const Standard_Real Ulast,
const Standard_Real Vfirst,
const Standard_Real Vlast,
Standard_Real& TheTol3d)
{
Standard_Integer NbPoints = 12; // 12 * 12 sur la surface.
Standard_Integer degu, degv;
Standard_Real Fv;
for (degu = mydegremin; degu <= mydegremax; degu++) {
for (degv = mydegremin; degv <= mydegremax; degv++) {
Approx_MySLeastSquare LSQ(Surf, Ufirst, Ulast, Vfirst, Vlast,
myfirstUCons, mylastUCons,
mylastVCons, mylastCons,
degu, degv, NbPoints);
LSQ.Error(Fv, TheTol3d);
if (TheTol3d <= mytol3d) {
TheSurface = LSQ.Value();
mySurfaces.Append(TheSurface);
tolreached = Standard_True;
Tolers3d.Append(TheTol3d);
currenttol3d = TheTol3d;
myfirstUparam.Append(Ufirst);
mylastUparam.Append(Ulast);
myfirstVparam.Append(Vfirst);
mylastVparam.Append(Vlast);
return Standard_True;
}
if (degu == mydegremax && degv == mydegremax) {
TheSurface = LSQ.Value();
tolreached = Standard_False;
currenttol3d = TheTol3d;
}
}
}
return Standard_False;
}
Standard_Real Approx_ComputeCSurface::Error(const Standard_Integer Index)const
{
return Tolers3d.Value(Index);
}
Handle(Geom_BezierSurface) Approx_ComputeCSurface::Value(const Standard_Integer Index)const
{
return Handle(Geom_BezierSurface)::DownCast(mySurfaces.Value(Index));
}
Standard_Integer Approx_ComputeCSurface::NbSurfaces() const
{
return mySurfaces.Length();
}
void Approx_ComputeCSurface::Parameters(const Standard_Integer Index,
Standard_Real& firstU,
Standard_Real& lastU,
Standard_Real& firstV,
Standard_Real& lastV)const
{
firstU = myfirstUparam.Value(Index);
lastU = mylastUparam.Value(Index);
firstV = myfirstVparam.Value(Index);
lastV = mylastVparam.Value(Index);
}
Standard_Boolean Approx_ComputeCSurface::IsToleranceReached() const
{
return tolreached;
}
Standard_Boolean Approx_ComputeCSurface::IsAllApproximated() const
{
return alldone;
}
void Approx_ComputeCSurface::SetDegrees(const Standard_Integer degreemin,
const Standard_Integer degreemax)
{
mydegremin = degreemin;
mydegremax = degreemax;
}
void Approx_ComputeCSurface::SetTolerance(const Standard_Real Tolerance3d)
{
mytol3d = Tolerance3d;
}
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