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Basic Curves And Surfaces Modeler

, 18 Apr 2012
A basic demo of modeling curves and surfaces in OpenGL.
cadsurfexe.zip
CadSurfexe
CadSurf.exe
VKGeom.dll
VKGraphic.dll
cadsurf_demo.zip
cadsurf_src.zip
CadSurf_src
VKernel
VKGraphic
VKGraphic.dsp
VKGraphic.dsw
VKGraphic.plg
VKGeom
VKGeom.dsp
VKGeom.dsw
cadsurf
CadSurf.clw
CadSurf.dsp
cadsurf.dsw
Thumbs.db
res
bmp00001.bmp
cadsurf.ico
CADSURFDOC.ICO
new_splash.bmp
new_splash.PNG
new_splash_small.bmp
tb_geom.bmp
Thumbs.db
toolbar.bmp
toolbar1.bmp
untitled.bmp
XPStyle.manifest
CadSurf_VS2008.zip
CadSurf
cadsurf
CadSurf.suo
res
bmp00001.bmp
cadsurf.ico
CADSURFDOC.ICO
new_splash.bmp
new_splash.PNG
new_splash_small.bmp
tb_geom.bmp
Thumbs.db
toolbar.bmp
toolbar1.bmp
untitled.bmp
VKernel
VKGeom
VKGraphic
VKGraphic.plg
// RevolvedSurface.cpp: implementation of the CRevolvedSurface class.
//
//////////////////////////////////////////////////////////////////////


#include "stdafx.h"

#include "RevolvedSurface.h"
#include "Point3D.h"
#include "Vector3D.h"
#include "Line3D.h"
#include "AxisSystem.h"
#include "MMath.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CRevolvedSurface::CRevolvedSurface(const CCurve* C, const COneAxis& Ax, const double& st, const double& en) : itsAxisOfRevol(Ax), startAngle(st), endAngle(en)
{
	sType = REVOLVED;
	baseCurve = C->Copy();
}

CRevolvedSurface::~CRevolvedSurface()
{
	if(baseCurve)
		delete baseCurve;
}

CPoint3D CRevolvedSurface::PointAtPara(const double uPar, const double vPar)
{
	CPoint3D P;
	CPoint3D CP = baseCurve->PointAtPara(uPar);
	COneAxis ax = itsAxisOfRevol;
	CP.Rotate(ax, vPar);
	P = CP;
	return P;
}

CVector3D CRevolvedSurface::NormalAt(const double uPar, const double vPar)
{
	CPoint3D Po, Pu, Pv;
	CVector3D N;

	if(uPar == LastUParameter() && vPar == LastVParameter())
	{
		Po = PointAtPara(uPar, vPar);
		Pu = PointAtPara(uPar-0.001, vPar);
		Pv = PointAtPara(uPar, vPar-0.001);
		CVector3D Vu(Po, Pu), Vv(Po, Pv);
		N = Vu^Vv;
		return N;
	}
	else if(uPar == LastUParameter() && vPar != LastVParameter())
	{
		Po = PointAtPara(uPar, vPar);
		Pu = PointAtPara(uPar-0.001, vPar);
		Pv = PointAtPara(uPar, vPar+0.001);
		CVector3D Vu(Po, Pu), Vv(Po, Pv);
		N = Vv^Vu;
		return N;
	}
	else if(uPar != LastUParameter() && vPar == LastVParameter())
	{
		Po = PointAtPara(uPar, vPar);
		Pu = PointAtPara(uPar+0.001, vPar);
		Pv = PointAtPara(uPar, vPar-0.001);
		CVector3D Vu(Po, Pu), Vv(Po, Pv);
		N = Vv^Vu;
		return N;
	}
	else
	{
		Po = PointAtPara(uPar, vPar);
		Pu = PointAtPara(uPar+0.001, vPar);
		Pv = PointAtPara(uPar, vPar+0.001);
		CVector3D Vu(Po, Pu), Vv(Po, Pv);
		N = Vu^Vv;
		return N;
	}
}

double CRevolvedSurface::FirstUParameter() const
{
	return baseCurve->FirstParameter();
}

double CRevolvedSurface::LastUParameter() const
{
	return baseCurve->LastParameter();
}

double CRevolvedSurface::FirstVParameter() const
{
	return startAngle;
}

double CRevolvedSurface::LastVParameter() const
{
	return endAngle;
}

bool CRevolvedSurface::IsUClosed() const
{
	return false;
}

bool CRevolvedSurface::IsVClosed() const
{
	bool b = ((endAngle - startAngle) - (2 * PI) == 0.0);
	return b;
}

CSurface* CRevolvedSurface::Copy() const
{
	CRevolvedSurface* R = new CRevolvedSurface(baseCurve, itsAxisOfRevol, startAngle, endAngle);
	return R;
}

void CRevolvedSurface::Translate(const COneAxis& Ax, const double& amt)
{
	CGeometry::Translate(Ax, amt);
}

void CRevolvedSurface::Translate(double dx, double dy, double dz)
{
	baseCurve->Translate(dx,dy,dz);
	itsAxisOfRevol.Translate(dx,dy,dz);
}

void CRevolvedSurface::Translate(const CVector3D& V)
{
	baseCurve->Translate(V);
	itsAxisOfRevol.Translate(V);
}

void CRevolvedSurface::Translate(const CPoint3D& P1, const CPoint3D& P2)
{
	baseCurve->Translate(P1, P2);
	itsAxisOfRevol.Translate(P1, P2);
}

void CRevolvedSurface::Rotate(const COneAxis& Ax, double ang)
{
	baseCurve->Rotate(Ax, ang);
	itsAxisOfRevol.Rotate(Ax, ang);
}

void CRevolvedSurface::Scale(const CPoint3D& P, double fact)
{
	baseCurve->Scale(P, fact);
	itsAxisOfRevol.Scale(P, fact);
}

void CRevolvedSurface::Mirror(const CPoint3D& P)
{
	baseCurve->Mirror(P);
	itsAxisOfRevol.Mirror(P);
}

void CRevolvedSurface::Mirror(const COneAxis& Ax)
{
	baseCurve->Mirror(Ax);
	itsAxisOfRevol.Mirror(Ax);
}

void CRevolvedSurface::Mirror(const CPlane& Pln)
{
	baseCurve->Mirror(Pln);
	itsAxisOfRevol.Mirror(Pln);
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Sharjith
Engineer Tata Technologies Ltd
India India
Sharjith is a Mechanical Engineer with strong passion for Automobiles, Aircrafts and Software development.

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