Flipping, Reversing, and Rotating Annotation Objects
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Note: |
This topic is for Document/Medical only. |
LEADTOOLS provides several methods for manipulating annotation objects so they are flipped, reversed, or rotated.
Use the AnnFlip method to flip one or more annotation objects, top to bottom. Objects that contain text cannot be flipped or reversed. If one or more such objects are in a group of objects that is flipped or reversed on a common axis, the text will move to the new position, but will retain its orientation.
Use the AnnReverse method to reverse one or more annotation objects, left to right. Objects that contain text cannot be flipped or reversed. If one or more such objects are in a group of objects that is flipped or reversed on a common axis, the text will move to the new position, but will retain its orientation.
Use the AnnRotate method to rotate one or more annotation objects. Certain objects cannot be rotated (see the following list). If one or more such objects are in a group of objects that is rotated around a common center, those objects will move to new positions, but will retain their orientation.
New with Version 14.5 of LEADTOOLS are the AnnGetRotateOptions method and the AnnSetRotateOptions method to control the interface used for performing rotations. For Version 14.5 of LEADTOOLS, enable these methods by calling the AnnSetOptions method and passing OPTIONS_NEW_ROTATE. For more information, refer to New Annotation Features of Version 14.5.
Flipping and Reversing:
All annotation objects flip or reverse with the following notes:
ANN_OBJECT_AUDIO - metafile does not flip/reverse
ANN_OBJECT_BUTTON - text itself does not flip/reverse
ANN_OBJECT_ENCRYPT - metafile does not flip/reverse
ANN_OBJECT_FREEHANDHOTSPOT -- metafile does not flip/reverse
ANN_OBJECT_HOTSPOT - metafile does not flip/reverse
ANN_OBJECT_NOTE - text itself does not flip/reverse
ANN_OBJECT_POINT - if the point uses an image, the image does not flip/reverse
ANN_OBJECT_PUSHPIN - text itself does not flip/reverse
ANN_OBJECT_RTF - text itself does not flip/reverse
ANN_OBJECT_STAMP – the text flips/reverses, but the image and metafile do not flip/reverse
ANN_OBJECT_TEXT - text itself does not flip/reverse
ANN_OBJECT_TEXTPOINTER - the tail flips, but the text does not flip/reverse
ANN_OBJECT_VIDEO - metafile does not flip/reverse
Rotating:
All objects rotate EXCEPT for the following objects:
ANN_OBJECT_AUDIO
ANN_OBJECT_BUTTON
ANN_OBJECT_ENCRYPT
ANN_OBJECT_FREEHANDHOTSPOT – the object rotates, but not the metafile
ANN_OBJECT_HOTSPOT
ANN_OBJECT_NOTE
ANN_OBJECT_POINT
ANN_OBJECT_PUSHPIN
ANN_OBJECT_RTF
ANN_OBJECT_TEXTPOINTER
ANN_OBJECT_VIDEO
See Also