rotate
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Input
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An integer between 0 and 116 specifying the input image frame number. A value of 0 represents the DMA memory buffer of the video device. Values in the range of 100-116 correspond to hidden frames.
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Output
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An integer between 1 and 116 specifying the output image frame number. Values in the range of 100-116 correspond to hidden frames.
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Angle
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A floating variable or constant specifying the rotation angle in degrees. A positive value corresponds to the clockwise direction, negative value to the counterclockwise direction.
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ERR_OK
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The flag set if successful.
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ERR_FAILED
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The flag set if failed.
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This set of statements will continuously grab an image and display it in a rotated position, gradually increasing the angle of rotation:
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for Ang=0 to 360 step 5
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grabim (0)
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rotate (0, 1, Ang)
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next
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