OpenSWMM::Contour::detail Namespace Reference

Functions
void	clipHalfplane (const std::vector< QPointF > &inPts, const std::vector< double > &inVals, double L, bool keepAbove, std::vector< QPointF > &outPts, std::vector< double > &outVals)
	Sutherland-Hodgman clip of a convex polygon against the half-plane defined by value >= L (when keepAbove) or value <= L (else).

Function Documentation

clipHalfplane()

void OpenSWMM::Contour::detail::clipHalfplane ( const std::vector< QPointF > &  inPts, const std::vector< double > &  inVals, double  L, bool  keepAbove, std::vector< QPointF > &  outPts, std::vector< double > &  outVals  )

inline

Sutherland-Hodgman clip of a convex polygon against the half-plane defined by value >= L (when keepAbove) or value <= L (else).

Input polygon vertices/values are read from inPts / inVals. Output is written to outPts / outVals (cleared on entry). Vertex values are tracked alongside vertices so chained clips against multiple levels stay numerically consistent. New vertices introduced by edge intersections receive value = L exactly.

Here is the caller graph for this function: