Without defining a keypoint, each primitive has a predefined implicit keypoint. You can run keypoint without any arguments to see what it is but by default, it's some user-provided value (which for the arb8, as you noticed, is the first vertex).
Cheers!
Sean
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I have an arb8 that is a cube centered on the origin.
When I do<br>
sed box1<br>
rot 0 45 0<br>
accept
it rotates around the axis relative to the 1st vertex. How do I rotate it around the origin ?
sed box1
keypoint 0 0 0
rot 0 45 0
accept
Without defining a keypoint, each primitive has a predefined implicit keypoint. You can run keypoint without any arguments to see what it is but by default, it's some user-provided value (which for the arb8, as you noticed, is the first vertex).
Cheers!
Sean