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RescaleCircle


Header: FIL.h
Namespace: fil

Changes radius of a circle and translates its center in relation to a reference point.

Syntax

void fil::RescaleCircle
(
	const fil::Circle2D& inCircle,
	ftl::Optional<const fil::Point2D&> inReferencePoint,
	float inScale,
	bool inInverse,
	fil::Circle2D& outCircle
)

Parameters

Name Type Default Description
Input value
 inCircle const Circle2D&
Input value
 inReferencePoint Optional<const Point2D&> NIL The point to which the distance of the circle center is changed (no change by default)
Input value
 inScale float 1.0f Scaling factor
Input value
 inInverse bool Switches to the inverse operation
Output value
 outCircle Circle2D&

In-place Processing

This function supports in-place data processing - you can pass the same reference to inCircle and outCircle

Read more about In-place Computation.

Examples

RescaleCircle performed on the sample circle, inReferencePoint = auto, inScale = 0.5 and inInverse = false.

Errors

List of possible exceptions:

Error type Description
DomainError Scale cannot be zero in an inverse rescaling of a circle in RescaleCircle.