Declarations

function SegmentIntersect(const P1, P2, P3, P4: TFloatPoint; out IntersectPoint: TFloatPoint): Boolean; overload;
function SegmentIntersect(const P1, P2, P3, P4: TFixedPoint; out IntersectPoint: TFixedPoint): Boolean; overload;

Overload Details

Overload 1

function SegmentIntersect(const P1, P2, P3, P4: TFloatPoint; out IntersectPoint: TFloatPoint): Boolean; overload;

Calculates intersection point between floating-point line segments P1-P2 and P3-P4.

Parameter	Type	Description
P1, P2	TFloatPoint	Endpoints of first line segment.
P3, P4	TFloatPoint	Endpoints of second line segment.
IntersectPoint	TFloatPoint	Output point receiving intersection coordinates.

Type	Description
Boolean	Returns True if the line segments intersect; otherwise False.

Overload 2

function SegmentIntersect(const P1, P2, P3, P4: TFixedPoint; out IntersectPoint: TFixedPoint): Boolean; overload;

Calculates intersection point between fixed-point line segments P1-P2 and P3-P4.

Parameter	Type	Description
P1, P2	TFixedPoint	Endpoints of first line segment.
P3, P4	TFixedPoint	Endpoints of second line segment.
IntersectPoint	TFixedPoint	Output point receiving intersection coordinates.

Type	Description
Boolean	Returns True if the line segments intersect; otherwise False.

Description

SegmentIntersect determines whether line segment $P1\to P2$ intersects line segment $P3\to P4$.

If an intersection occurs on both segments, the function populates IntersectPoint with the coordinates of the intersection and returns True. If the segments are parallel or do not overlap, the function returns False.