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Action:
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Creates a transform to rotate an object about an axis.
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Filename:
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kern/kern_scm/tran_scm.cxx
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Syntax:
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(transform:rotation origin-position
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axis-direction angle)
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Arg Types:
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origin-position
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position
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axis-direction
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gvector
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angle
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real
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Returns:
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transform
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origin-position specifies the start location of the rotate.
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axis-direction specifies the axis direction of rotation. The right-hand rule determines the direction of rotation.
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angle specifies the angle in degrees to rotate the object.
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Example:
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; transform:rotation
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; Define a working coordinate system.
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(define wcs1
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(wcs (position 0 0 0) (gvector 1 0 0)
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(gvector 0 1 0)))
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;; wcs1
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; Set a color for the wcs.
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(entity:set-color wcs1 6)
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;; ()
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; Create a solid block.
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(define block1
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(solid:block (position 0 0 0)
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(position 5 10 15)))
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;; block1
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; OUTPUT Original
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; Create a transform and then create its reflection.
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(define transform1
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(transform:rotation
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(position 0 0 0) (gvector -3 0 0) 45))
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;; transform1
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; Apply the transform to reflect the block.
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(define transform
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(entity:transform block1 transform1))
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;; transform
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; OUTPUT Result
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Figure 15-7. transform:rotation
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