![]() Therefore, the common way to cause an object to rotate around its center is to leave CenterX, CenterY as (0,0) but set UIElement.RenderTransformOrigin to be a logical Point where the values are (0.5,0.5). With the default UIElement.RenderTransformOrigin of (0,0) an object won't rotate around its center, it rotates around the top left corner of its bounding box. A common scenario for RotateTransform is to rotate an object in place around its center (either as an animation or as a one-time transformation). RenderTransformOrigin establishes the coordinate frame of reference for how all transformations including the RotateTransform will apply. UIElement also has the UIElement.RenderTransformOrigin property, which defaults to (0,0). For example, you can simulate an orbit.Ī Transform is typically used to fill the UIElement.RenderTransform property, to change how an element renders. You might use a nondefault CenterX, CenterY if you don't want to rotate in place and instead want to rotate around a point in the transform's frame of reference. To rotate in place, leave CenterX, CenterY as the default (0,0). For values less than –360 or greater than 360, the values wrap around and are treated as if the mathematical operation mod(360) was applied. It's legal to use an Angle value that's negative, which causes the rotation to be counterclockwise. If the Angle value applied is positive, the rotation applied is in the clockwise direction. Ī RotateTransform is defined by an Angle that rotates an object through an arc around the point CenterX, CenterY. An Angle value of 90 rotates the element 90 degrees clockwise. This example uses a RotateTransform to rotate text. This example shows text rotated 90 degrees using a RotateTransform. Transforms can alter the display of text in your application to create a decorative effect. Public sealed class RotateTransform : Transform Public NotInheritable Class RotateTransform Public sealed class RotateTransform : Transform / Ĭlass RotateTransform final : Transform /// Ĭlass RotateTransform final : Transform In this article public ref class RotateTransform sealed : Transform /// Rotates an object around a specified point in a two-dimensional x-y coordinate system.
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