www.pudn.com > 3d_terrain.rar > Edge3d.cpp, change:1999-02-02,size:5023b

//******************************************** 
// Edge3d.cpp 
//******************************************** 
// class CEdge3d 
//******************************************** 
// pierre.alliez@cnet.francetelecom.fr 
// Created : 10/12/97 
// Modified : 16/12/97 
//******************************************** 
 
#include "stdafx.h" 
 
#include "Base3d.h" 
#include "Edge3d.h" 
 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
// CONSTRUCTORS 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
 
//******************************************** 
// Constructor 
//******************************************** 
CEdge3d::CEdge3d() 
{ 
	m_pVertex1 = NULL; 
	m_pVertex2 = NULL; 
	m_pFace1 = NULL; 
	m_pFace2 = NULL; 
	m_Flag = 0; 
} 
 
 
//******************************************** 
// Constructor 
//******************************************** 
CEdge3d::CEdge3d(CVertex3d *pVertex1, 
								 CVertex3d *pVertex2) 
{ 
	Set(pVertex1,pVertex2); 
	m_pFace1 = NULL; 
	m_pFace2 = NULL; 
	m_Flag = 0; 
} 
 
//******************************************** 
// Constructor 
//******************************************** 
CEdge3d::CEdge3d(CVertex3d *pVertex1, 
								 CVertex3d *pVertex2, 
								 CFace3d *pFace1, 
								 CFace3d *pFace2) 
{ 
	Set(pVertex1,pVertex2); 
	Set(pFace1,pFace2); 
	m_Flag = 0; 
} 
 
 
//******************************************** 
// Constructor 
//******************************************** 
CEdge3d::CEdge3d(CEdge3d *pEdge) 
{ 
	Set(pEdge); 
	m_Flag = 0; 
} 
 
 
 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
// DATAS 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
 
//******************************************** 
// GetType 
//******************************************** 
int CEdge3d::GetType() 
{ 
	return TYPE_EDGE3D; 
} 
 
//******************************************** 
// Set 
//******************************************** 
void CEdge3d::Set(CVertex3d *pVertex1, 
									CVertex3d *pVertex2) 
{ 
	m_pVertex1 = pVertex1; 
	m_pVertex2 = pVertex2; 
} 
 
//******************************************** 
// Set 
//******************************************** 
void CEdge3d::Set(CFace3d *pFace1, 
									CFace3d *pFace2) 
{ 
	m_pFace1 = pFace1; 
	m_pFace2 = pFace2; 
} 
 
 
//******************************************** 
// Set 
//******************************************** 
void CEdge3d::Set(CEdge3d *pEdge) 
{ 
	Set(pEdge->v1(),pEdge->v2()); 
	Set(pEdge->f1(),pEdge->f2()); 
} 
 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
// PROCESSING 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
 
//******************************************** 
// sharp 
// threshold : sin(angle) 
//******************************************** 
int CEdge3d::sharp(float threshold) 
{ 
	// Check 
	if(m_pFace1 == NULL ||  
	   m_pFace2 == NULL) 
		return 0; 
 
	return (SinAngle(m_pFace1,m_pFace2) >= threshold); 
} 
 
//******************************************** 
// Equal (order independant) 
//******************************************** 
int CEdge3d::Equal(CEdge3d *pEdge) 
{ 
	int success = 0; 
	success += m_pVertex1 == pEdge->v1(); 
	success += m_pVertex1 == pEdge->v2(); 
	success += m_pVertex2 == pEdge->v1(); 
	success += m_pVertex2 == pEdge->v2(); 
	return (success >= 2); 
} 
 
 
//******************************************** 
// GetVertexDiff 
//******************************************** 
CVertex3d *CEdge3d::GetVertexDiff(CVertex3d *pVertexDiff) 
{ 
	if(m_pVertex1 != pVertexDiff) 
		return m_pVertex1; 
	else 
	{ 
		ASSERT(m_pVertex2 != pVertexDiff); 
		return m_pVertex2; 
	} 
} 
 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
// OPENGL 
////////////////////////////////////////////// 
////////////////////////////////////////////// 
 
//******************************************** 
// glDrawHighlight 
// Highlights edge 
//******************************************** 
void CEdge3d::glDrawHighlight(unsigned char *color) 
{ 
	// Color 
	glColor3ub(color[0],color[1],color[2]); 
 
	::glBegin(GL_LINES); 
		::glVertex3f(m_pVertex1->x(),m_pVertex1->y(),m_pVertex1->z()); 
		::glVertex3f(m_pVertex2->x(),m_pVertex2->y(),m_pVertex2->z()); 
	::glEnd(); 
} 
 
//******************************************** 
// glDrawHighlight 
// Highlights edge and neighbors 
//******************************************** 
void CEdge3d::glDrawHighlight(unsigned char *color, 
															unsigned char *ColorNeighbor) 
{ 
	// Color 
	glColor3ub(color[0],color[1],color[2]); 
 
	::glBegin(GL_LINES); 
		::glVertex3f(m_pVertex1->x(),m_pVertex1->y(),m_pVertex1->z()); 
		::glVertex3f(m_pVertex2->x(),m_pVertex2->y(),m_pVertex2->z()); 
	::glEnd(); 
 
	m_pFace1->glDraw(ColorNeighbor); 
	m_pFace2->glDraw(ColorNeighbor); 
} 
 
 
 
 
// ** EOF **