C++ (Cpp) AcGePoint3dArray::removeLast Examples

Example #1

File: PDSphere.cpp Project: wangfeilong321/PDMS_ExportModel

////////////////////////////////////////////////////////////////////////////////
///////		将球在圆上分成m_nPrecision段，然后求相应处圆的半径	///////
///////		再将此圆分成m_nPrecision份。								////////
///////		所以共 (m_nPrecision+1)*(m_nPrecision+1)个点				////
////////////////////////////////////////////////////////////////////////////////
Acad::ErrorStatus  PDSphere::getVertices(int Precision, AcGePoint3dArray& vertexArray, 
										 AcGeIntArray &stdIdx, int &actPrecision) const

{  assertReadEnabled();

while(!vertexArray.isEmpty())
vertexArray.removeLast();

AcGeDoubleArray dividDbl;
getActDivid(Precision, dividDbl, stdIdx);

int actPrecision__1 = dividDbl.length();
int actPrecision___2__1 = (dividDbl.length() - 1) * 2 + 1;
actPrecision = actPrecision__1 - 1;
vertexArray.setLogicalLength(actPrecision__1*actPrecision___2__1);


AcGePoint3d varPt = m_ptCenter;        //变截面的中心点
double varR = 0;
double deltaAngle = PI / Precision;

/////////////////////////////////////////////////////////////
///////		begin the division						/////////
AcGeCubicSplineCurve3d varcur;
AcGePoint3d point;

for(int i = 0; i < actPrecision__1; ++i)
{
	varPt.z=m_ptCenter.z- m_dRadius*cos(deltaAngle*dividDbl[i]);

	double tt = m_dRadius * m_dRadius - (m_ptCenter.z - varPt.z) * 
		(m_ptCenter.z - varPt.z);
	if(tt < 0)
		tt = 0;
	varR = sqrt(tt);

	int j;
	for(j = 0; j <actPrecision__1; ++j)
	{		  
		if(i == 0)
		{
			point = m_ptCenter - AcGeVector3d(0, 0, 1) * m_dRadius;
			vertexArray[i*actPrecision___2__1+j]=point;
		}
		else if(i == actPrecision__1)
		{ 
			point = m_ptCenter + AcGeVector3d(0, 0, 1) * m_dRadius;
			vertexArray[i*actPrecision___2__1+j]=point;
		}         
		else
		{ 
			point=varPt + AcGeVector3d(1, 0, 0) * varR;
			point.rotateBy(deltaAngle * dividDbl[j], AcGeVector3d(0, 0, 1), varPt);
			vertexArray[i*actPrecision__1+j]=point;
		}  	
	}
	for(j = 1; j <actPrecision__1; ++j)
	{		  
		if(i == 0)
		{
			point = m_ptCenter - AcGeVector3d(0, 0, 1) * m_dRadius;
			vertexArray[i*actPrecision__1 + j + actPrecision]=point;
		}
		else if(i == actPrecision__1)
		{ 
			point = m_ptCenter + AcGeVector3d(0, 0, 1) * m_dRadius;
			vertexArray[i*actPrecision__1 + j + actPrecision]=point;
		}         
		else
		{ 
			point=varPt + AcGeVector3d(1, 0, 0) * varR;
			point.rotateBy(deltaAngle * dividDbl[j] + PI, AcGeVector3d(0, 0, 1), varPt);
			vertexArray[i*actPrecision__1 + j + actPrecision]=point;
		}  	
	}
}

return Acad::eOk;
}