//================================================================
// Function : Convert_Presentation::sampleBezier
// Purpose :
//================================================================
void Convert_Presentation::sampleBezier()
{
TCollection_AsciiString aText (
" Standard_Real aPolesCoords[][3] = {" EOL
" {0,0,0},{0,1,0},{1,1,0},{1,2,0},{2,2,0},{2,1,0},{3,1,0},{3,0,0},{2,0,0},{2,-1,0}," EOL
" {3,-1,0},{3,-2,0},{4,-2,0},{4,-1,0},{5,-1,0},{5,0,0},{6,0,0},{6,-1,0},{7,-1,0}," EOL
" {7,0,0},{8,0,0},{8,1,0}" EOL
" };" EOL
" TColgp_Array1OfPnt aPoles (1, sizeof(aPolesCoords)/(sizeof(Standard_Real)*2));" EOL
" " EOL
" for (Standard_Integer i=1; i <= aPoles.Upper(); i++)" EOL
" aPoles(i) = gp_Pnt (aPolesCoords[i-1][0]*100, " EOL
" aPolesCoords[i-1][1]*100, " EOL
" aPolesCoords[i-1][2]*100);" EOL
" " EOL
" Handle(Geom_BezierCurve) aCurve = new Geom_BezierCurve (aPoles);" EOL
);
Standard_Real aPolesCoords[][3] = {
{0,0,0},{0,1,0},{1,1,0},{1,2,0},{2,2,0},{2,1,0},{3,1,0},{3,0,0},{2,0,0},{2,-1,0},
{3,-1,0},{3,-2,0},{4,-2,0},{4,-1,0},{5,-1,0},{5,0,0},{6,0,0},{6,-1,0},{7,-1,0},
{7,0,0},{8,0,0},{8,1,0}
};
TColgp_Array1OfPnt aPoles (1, sizeof(aPolesCoords)/(sizeof(Standard_Real)*3));
for (Standard_Integer i=1; i <= aPoles.Upper(); i++)
aPoles(i) = gp_Pnt (aPolesCoords[i-1][0]*150-500,
aPolesCoords[i-1][1]*150,
aPolesCoords[i-1][2]*150);
Handle(Geom_BezierCurve) aCurve = new Geom_BezierCurve (aPoles);
drawCurveAndItsBSpline (aCurve, "BezierCurve", aText);
}
/*! \brief Returns the oriented normal of a triangle
*
* \warning The returned vector is not normalized
*
* \param nodes Vertices of the triangulation that \p triangle belongs to
* \param triangle Triangle whose normal has to be computed
* \param ori Orientation of the triangle (generally inherited from the
* triangulated face)
*/
gp_Vec MathUtils::triangleNormal(
const TColgp_Array1OfPnt &nodes,
const Poly_Triangle &triangle,
TopAbs_Orientation ori)
{
Standard_Integer n1, n2, n3;
if (ori == TopAbs_REVERSED)
triangle.Get(n1, n3, n2);
else
triangle.Get(n1, n2, n3);
assert(nodes.Lower() <= n1 && n1 <= nodes.Upper());
assert(nodes.Lower() <= n2 && n2 <= nodes.Upper());
assert(nodes.Lower() <= n3 && n3 <= nodes.Upper());
const gp_Vec v1(nodes(n1), nodes(n2)); // V1=(P1,P2)
const gp_Vec v2(nodes(n2), nodes(n3)); // V2=(P2,P3)
const gp_Vec v3(nodes(n3), nodes(n1)); // V3=(P3,P1)
if ((v1.SquareMagnitude() > 1.e-10)
&& (v2.SquareMagnitude() > 1.e-10)
&& (v3.SquareMagnitude() > 1.e-10))
{
return v1.Crossed(v2);
}
return v1;
}
Handle(Geom_BSplineSurface) ParameterCorrection::CreateSurface(const TColgp_Array1OfPnt& points,
unsigned short usIter,
bool bParaCor,
float fSizeFactor)
{
if (_pvcPoints != NULL)
{
delete _pvcPoints;
_pvcPoints = NULL;
delete _pvcUVParam;
_pvcUVParam = NULL;
}
_pvcPoints = new TColgp_Array1OfPnt(points.Lower(), points.Upper());
*_pvcPoints = points;
_pvcUVParam = new TColgp_Array1OfPnt2d(points.Lower(), points.Upper());
if (_usUCtrlpoints*_usVCtrlpoints > _pvcPoints->Length())
return NULL; //LGS unterbestimmt
if(!DoInitialParameterCorrection(fSizeFactor))
return NULL;
if (bParaCor)
DoParameterCorrection(usIter);
return new Geom_BSplineSurface
(_vCtrlPntsOfSurf,
_vUKnots,
_vVKnots,
_vUMults,
_vVMults,
_usUOrder-1,
_usVOrder-1);
}
/*
Creates the hyperboloid using a formula.
TODO: Update this so the hyperboloid actually represents a proper parametric model.
*/
TopoDS_Shape hyperboloid::create(double innerRadius, double height, double heightUnder, double angle)
{
int detail = 40;
gp_Pnt Origin(0,0,0);
gp_Vec Dir(0,0,1);
int uCount = detail;
double a = innerRadius;
double c = angle;
double totalHeight = height + heightUnder;
TColgp_Array1OfPnt array (0,uCount - 1);
for (double u = 0; u < uCount; u++)
{
double uValue = ((totalHeight * u / (uCount - 1)) - heightUnder) / c;
double vValue = 0;
double sqrMe = 1 + uValue * uValue;
double x = a * sqrt(sqrMe) * cos(vValue);
double y = a * sqrt(sqrMe) * sin(vValue);
double z = c * uValue;
gp_Pnt P1(x,y,z);
array.SetValue(u,P1);
}
Handle(Geom_BSplineCurve) hyperbola = GeomAPI_PointsToBSpline(array).Curve();
TopoDS_Edge hyperbolaTopoDS = BRepBuilderAPI_MakeEdge(hyperbola);
gp_Ax1 axis = gp_Ax1(Origin,Dir);
TopoDS_Shape hyperboloid = BRepPrimAPI_MakeRevol(hyperbolaTopoDS, axis);
return hyperboloid;
}
void HeeksDxfRead::OnReadSpline(struct SplineData& sd)
{
bool closed = (sd.flag & 1) != 0;
bool periodic = (sd.flag & 2) != 0;
bool rational = (sd.flag & 4) != 0;
// bool planar = (sd.flag & 8) != 0;
// bool linear = (sd.flag & 16) != 0;
SplineData sd_copy = sd;
if(closed)
{
// add some more control points
sd_copy.control_points += 3;
//for(int i = 0; i<3; i++
//sd_copy.controlx
}
TColgp_Array1OfPnt control (1,/*closed ? sd.controlx.size() + 1:*/sd.controlx.size());
TColStd_Array1OfReal weight (1,sd.controlx.size());
std::list<double> knoto;
std::list<int> multo;
std::list<double>::iterator ity = sd.controly.begin();
std::list<double>::iterator itz = sd.controlz.begin();
std::list<double>::iterator itw = sd.weight.begin();
unsigned i=1; //int i=1;
for(std::list<double>::iterator itx = sd.controlx.begin(); itx!=sd.controlx.end(); ++itx)
{
gp_Pnt pnt(*itx,*ity,*itz);
control.SetValue(i,pnt);
if(sd.weight.empty())
weight.SetValue(i,1);
else
{
weight.SetValue(i,*itw);
++itw;
}
++i;
++ity;
++itz;
}
i=1;
double last_knot = -1;
for(std::list<double>::iterator it = sd.knot.begin(); it!=sd.knot.end(); ++it)
{
if(*it != last_knot)
{
knoto.push_back(*it);
multo.push_back(1);
i++;
}
else
{
int temp = multo.back();
multo.pop_back();
multo.push_back(temp+1);
}
last_knot = *it;
}
TColStd_Array1OfReal knot (1, knoto.size());
TColStd_Array1OfInteger mult (1, knoto.size());
std::list<int>::iterator itm = multo.begin();
i = 1;
for(std::list<double>::iterator it = knoto.begin(); it!=knoto.end(); ++it)
{
knot.SetValue(i,*it);
int m = *itm;
if(closed && (i == 1 || i == knoto.size()))m = 1;
mult.SetValue(i, m);
++itm;
++i;
}
OnReadSpline(control, weight, knot, mult, sd.degree, periodic, rational);
}