FMX.Gestures.TCustomGestureRecognizer.ScalePoints

• Up to Parent: TCustomGestureRecognizer

Delphi

function ScalePoints(const Points, GesturePoints: array of TPointF; MinScale: Integer;
Scaling: Boolean = False): TGesturePointArray; virtual;

C++

virtual Fmx::Types::TGesturePointArray __fastcall ScalePoints(const System::Types::TPointF *Points, const System::NativeInt Points_High, const System::Types::TPointF *GesturePoints, const System::NativeInt GesturePoints_High, int MinScale, bool Scaling = false);

Properties

Type	Visibility	Source	Unit	Parent
function	public	FMX.Gestures.pas FMX.Gestures.hpp	FMX.Gestures	TCustomGestureRecognizer

Description

Scales the surface described by a set of input points to match that of the expected set of points.

Override ScalePoints in descendant classes to implement proper scaling of a surface described by a set of input points. The scaling is necessary, since the expected set of points may describe a smaller or a bigger surface, different than the one described by the input points. ScalePoints returns an array of scaled input points. The following table describes the parameters expected by ScalePoints.

Parameter	Description
Points	An array of input points to be scaled.
MinScale	The minimum allowed scale factor. If the scaling factor is below this value, no scaling is performed.
Scaling	Specifies whether the scaling is asymmetrical.

See Also

• NormalizePoints

• Match