Leadtools Namespace > RasterImageAnimator Class : GetUpdateRectangle Method |
'Usage Dim instance As RasterImageAnimator Dim clear As Boolean Dim value As LeadRect value = instance.GetUpdateRectangle(clear)
function Leadtools.RasterImageAnimator.GetUpdateRectangle( clear )
The rectangle uses image coordinates, and it is cumulative.
You usually call this after the following states, which you can get with the State property:
Value | Meaning |
---|---|
RasterImageAnimatorState.PostClear | Indicates that the target image has been cleared |
RasterImageAnimatorState.PostRender | that a frame has been rendered to the target image |
RasterImageAnimatorState.PostDispose | Indicates that the current frame has been disposed of. The index is incremented after processing this state |
This method uses image coordinates to specify the update rectangle. Therefore, you must account for the image's view perspective. For more information, refer to Accounting for View Perspective.
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