Пример #1
0
/*
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;
}
Пример #2
0
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);
}