本文整理汇总了C++中GeoPoint::getDim方法的典型用法代码示例。如果您正苦于以下问题：C++ GeoPoint::getDim方法的具体用法？C++ GeoPoint::getDim怎么用？C++ GeoPoint::getDim使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GeoPoint的用法示例。
在下文中一共展示了GeoPoint::getDim方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: GeoPoint
bool
getIsectPoint( const GeoPoint& p1, const GeoPoint& p2, const GeoPoint& p3, const GeoPoint& p4, GeoPoint& out )
{
double denom = (p4.y()-p3.y())*(p2.x()-p1.x()) - (p4.x()-p3.x())*(p2.y()-p1.y());
if ( denom == 0.0 )
{
out = GeoPoint::invalid(); // parallel lines
return false;
}
double ua_num = (p4.x()-p3.x())*(p1.y()-p3.y()) - (p4.y()-p3.y())*(p1.x()-p3.x());
double ub_num = (p2.x()-p1.x())*(p1.y()-p3.y()) - (p2.y()-p1.y())*(p1.x()-p3.x());
double ua = ua_num/denom;
double ub = ub_num/denom;
if ( ua < 0.0 || ua > 1.0 ) // || ub < 0.0 || ub > 1.0 )
{
out = GeoPoint::invalid(); // isect point is on line, but not on line segment
return false;
}
double x = p1.x() + ua*(p2.x()-p1.x());
double y = p1.y() + ua*(p2.y()-p1.y());
double z = p1.getDim() > 2? p1.z() + ua*(p2.z()-p1.z()) : 0.0; //right?
out = GeoPoint( x, y, z, p1.getSRS() );
return true;
}示例2: isValid
bool
GeoPoint::operator == ( const GeoPoint& rhs ) const
{
return
isValid() && rhs.isValid() &&
SpatialReference::equivalent( getSRS(), rhs.getSRS() ) &&
getDim() == rhs.getDim() &&
x() == rhs.x() &&
(getDim() < 2 || y() == rhs.y()) &&
(getDim() < 3 || z() == rhs.z());
}示例3: visitPoint
bool visitPoint( GeoPoint& p )
{
bool ok = true;
// pull it out of the source reference frame:
p.set( p * src_rf );
// reproject it:
if ( handle )
ok = OCTTransform( handle, 1, &p.x(), &p.y(), &p.z() ) != 0;
// push it into the new reference frame:
p.set( p * to_srs->getReferenceFrame() );
p = p.getDim() == 2? GeoPoint( p.x(), p.y(), to_srs ) : GeoPoint( p.x(), p.y(), p.z(), to_srs );
return ok;
}示例4: if
bool
findIsectSegmentAndPoint(const GeoPoint& p1,
const GeoPoint& p2,
const GeoPointList& input,
const UINT start_i,
int& out_seg_i,
GeoPoint& out_isect_p )
{
for( UINT i=0; i<input.size()-1; i++ )
{
// ignore the segments preceding and following the start index
if ( (input.size()+start_i-1)%input.size() <= i && i <= (input.size()+start_i+1)%input.size() )
continue;
const GeoPoint& p3 = input[i];
const GeoPoint& p4 = input[i+1];
double denom = (p4.y()-p3.y())*(p2.x()-p1.x()) - (p4.x()-p3.x())*(p2.y()-p1.y());
if ( denom != 0.0 )
{
double ua_num = (p4.x()-p3.x())*(p1.y()-p3.y()) - (p4.y()-p3.y())*(p1.x()-p3.x());
double ub_num = (p2.x()-p1.x())*(p1.y()-p3.y()) - (p2.y()-p1.y())*(p1.x()-p3.x());
double ua = ua_num/denom;
double ub = ub_num/denom;
if ( ua <= 1.0 ) {
//osgGIS::notify( osg::WARN )
// << " ["
// << i << "] "
// << "isect point was found at on source segment (ua=" << ua << ")"
// << std::endl
// << " source segment = (" << p1.toString() << " => " << p2.toString() << "), "
// << " target segment = (" << p3.toString() << " => " << p4.toString() << ")"
// << std::endl;
}
else if ( ub < 0.0 || ub > 1.0 )
{
//osgGIS::notify( osg::WARN )
// << " ["
// << i << "] "
// << "isect point was not found on target segment (ub=" << ub << ")"
// << std::endl
// << " source segment = (" << p1.toString() << " => " << p2.toString() << "), "
// << " target segment = (" << p3.toString() << " => " << p4.toString() << ")"
// << std::endl;
}
else
{
double isect_x = p1.x() + ua*(p2.x()-p1.x());
double isect_y = p1.y() + ua*(p2.y()-p1.y());
out_seg_i = i;
out_isect_p = p1.getDim() == 2?
GeoPoint( isect_x, isect_y, p4.getSRS() ) :
GeoPoint( isect_x, isect_y, p4.z(), p4.getSRS() );
return true;
}
}
}
return false;
}