General​Transform General​Transform General​Transform Class

Definition

Provides generalized transformation support for objects. GeneralTransform is a base class that's in the hierarchy of practical transform classes such as TranslateTransform.

public class GeneralTransform : DependencyObject, IGeneralTransform, IGeneralTransformOverridespublic class GeneralTransform : DependencyObject, IGeneralTransform, IGeneralTransformOverridesPublic Class GeneralTransform Inherits DependencyObject Implements IGeneralTransform, IGeneralTransformOverrides
Inheritance
GeneralTransformGeneralTransformGeneralTransform
Attributes
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)

Inherited Members

Inherited methods

Inherited properties

Remarks

Transformation types include rotation (RotateTransform ), scale (ScaleTransform ), skew/shear (SkewTransform ), and translation (TranslateTransform ).

MatrixTransform is for transforms that don't use these conventions and instead use Matrix values for transform definition.

CompositeTransform and TransformGroup both support specifying multiple transforms for a combined transformation logic.

There's also an intermediate base class, Transform. Properties sometimes are typed as GeneralTransform or Transform so that you can use any of the practical transforms to provide values.

You can animate properties of a transform. For XAML syntaxes that take a Transform, you need to specify a nonabstract derived type of Transform as an object element. Typically, this is one of: MatrixTransform, RotateTransform, ScaleTransform, SkewTransform, or TranslateTransform. See the syntax sections on the appropriate class.

Use the MatrixTransform class to create custom transformations that are not provided by the other Transform derived classes. A two-dimensional x-y plane uses a 3x3 matrix for transformations.

GeneralTransform derived classes

GeneralTransform is the parent class for Transform. Transform is the parent class for the practical transforms.

Constructors

GeneralTransform() GeneralTransform() GeneralTransform()

Provides base class initialization behavior for GeneralTransform -derived classes.

protected GeneralTransform()protected GeneralTransform()Protected Sub New()
Attributes

Properties

Inverse Inverse Inverse

Gets the inverse transformation of this GeneralTransform, if possible.

public GeneralTransform Inverse { get; }public GeneralTransform Inverse { get; }Public ReadOnly Property Inverse As GeneralTransform
Value
GeneralTransform GeneralTransform GeneralTransform

An inverse of this instance, if possible; otherwise null.

Attributes

InverseCore InverseCore InverseCore

Implements the behavior for return value of Inverse in a derived or custom GeneralTransform.

protected virtual GeneralTransform InverseCore { get; }protected virtual GeneralTransform InverseCore { get; }Protected Overridable ReadOnly Property InverseCore As GeneralTransform
Value
GeneralTransform GeneralTransform GeneralTransform

The value that should be returned as Inverse by the GeneralTransform.

Attributes

Methods

TransformBounds(Rect) TransformBounds(Rect) TransformBounds(Rect)

Transforms the specified bounding box and returns an axis-aligned bounding box that is exactly large enough to contain it.

public Rect TransformBounds(Rect rect)public Rect TransformBounds(Rect rect)Public Function TransformBounds(rect As Rect) As Rect
Parameters
rect
Rect Rect Rect

The bounding box to transform.

Returns

The smallest axis-aligned bounding box possible that contains the transformed rect.

Attributes

TransformBoundsCore(Rect) TransformBoundsCore(Rect) TransformBoundsCore(Rect)

Provides the means to override the TransformBounds behavior in a derived transform class.

protected virtual Rect TransformBoundsCore(Rect rect)protected virtual Rect TransformBoundsCore(Rect rect)Protected Overridable Function TransformBoundsCore(rect As Rect) As Rect
Parameters
rect
Rect Rect Rect

The bounding box to transform.

Returns

The smallest axis-aligned bounding box possible that contains the transformed rect.

Attributes

TransformPoint(Point) TransformPoint(Point) TransformPoint(Point)

Uses this transformation object's logic to transform the specified point, and returns the result.

public Point TransformPoint(Point point)public Point TransformPoint(Point point)Public Function TransformPoint(point As Point) As Point
Parameters
point
Point Point Point

The point to transform using the transformation logic.

Returns

The result of transforming point.

Attributes

Remarks

The purpose of transformations is to convert data in coordinate systems to new frames of reference for a different coordinate system. Call this method to use the logic of this specific Transform derived class in order to convert a Point of the initial coordinate system into a Point in the coordinate system as it's interpreted by the transformation.

TryTransform(Point, Point) TryTransform(Point, Point) TryTransform(Point, Point)

Attempts to transform the specified point and returns a value that indicates whether the transformation was successful.

public PlatForm::Boolean TryTransform(Point inPoint, Point outPoint)public bool TryTransform(Point inPoint, Point outPoint)Public Function TryTransform(inPoint As Point, outPoint As Point) As bool
Parameters
inPoint
Point Point Point

The point to transform.

outPoint
Point Point Point

The result of transforming inPoint.

Returns
bool bool bool

true if inPoint was transformed; otherwise, false.

Attributes

TryTransformCore(Point, Point) TryTransformCore(Point, Point) TryTransformCore(Point, Point)

Provides the means to override the TryTransform behavior in a derived transform class.

protected virtual PlatForm::Boolean TryTransformCore(Point inPoint, Point outPoint)protected virtual bool TryTransformCore(Point inPoint, Point outPoint)Protected Overridable Function TryTransformCore(inPoint As Point, outPoint As Point) As bool
Parameters
inPoint
Point Point Point

The point to transform.

outPoint
Point Point Point

The result of transforming inPoint.

Returns
bool bool bool

true if inPoint was transformed; otherwise, false.

Attributes

See Also