Declaration

TPolyFillMode = (pfAlternate, pfWinding, pfEvenOdd = 0, pfNonZero);

Description

TPolyFillMode determines how coverage and winding numbers are evaluated to decide whether a point falls inside a complex multi-contour or self-intersecting polygon.

Enum Values

Value	Description
pfAlternate	Alternate / Even-Odd fill rule. A point is inside the polygon if a ray drawn from it to infinity crosses an odd number of path edges. Equivalent to pfEvenOdd.
pfWinding	Non-Zero Winding fill rule. Evaluates the direction of contour edges crossing a ray to compute a net winding number; non-zero counts are considered inside. Equivalent to pfNonZero.
pfEvenOdd	Alias for pfAlternate (value 0).
pfNonZero	Alias for pfWinding (value 1).