C++ (Cpp) BezierCurve::length示例

float BccWorld::groupCurveLength(GeometryArray * geos)
{
	float sum = 0.f;
	const unsigned n = geos->numGeometries();
     unsigned i = 0;
    for(;i<n;i++) {
        BezierCurve * c = static_cast<BezierCurve *>(geos->geometry(i));
        sum += c->length();
    }
	return sum;
}

示例#2

显示文件

文件： BccWorld.cpp 项目： kkaushalp/aphid

bool BccWorld::createCurveGeometryFromFile()
{
	if(!readCurveDataFromFile()) return false;
	
	m_allGeo = new GeometryArray;
	m_allGeo->create(m_curves->numCurves());
	
	const unsigned n = m_curves->numCurves();
	m_allGeo = new GeometryArray;
	m_allGeo->create(n);
	
	unsigned * cc = m_curves->counts();
	Vector3F * cvs = m_curves->points();
	
	m_totalCurveLength = 0.f;
	CurveBuilder cb;
	
	unsigned ncv;
	unsigned cvDrift = 0;
	
	unsigned i, j;
	for(i=0; i< n; i++) {
		
		ncv = cc[i];
		
		for(j=0; j < ncv; j++)			
			cb.addVertex(cvs[j + cvDrift]);
		
		BezierCurve * c = new BezierCurve;
		cb.finishBuild(c);
		
		m_totalCurveLength += c->length();
		
		m_allGeo->setGeometry(c, i);
		
		cvDrift += ncv;
	}
    std::cout<<" n curves "<<n
	    <<" total curve length: "<<m_totalCurveLength<<"\n";
    m_numCurves = n;
	return true;
}