Subject:
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Re: On the difficulty of making building instructions
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 8 Feb 2001 03:28:17 GMT
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Viewed:
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444 times
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I think I have a nice solution to the 3-dimensional movement.
Depending on what side of the brick you mouse on, its movement is constrained.
Style 1: you mouse on a brick's side, it's like you can only push or pull it
in a straight line. Click on top and you can move it around the baseplate or
whatever. It "Floats" on top of the highest brick already there.
Style 2: (accessible on pushing Control key) when you click on any flat
surface, you get to drag the brick in a plane flush with that surface. Use
this to make a brick float up in space.
By default, all movement is in steps of 1x1 brick or plates.
This is all implemented in a perspective view, by the way.
There is a big hairy data structure, basically a sparse matrix of those 1x1
plates, that marks what spots are occupied by pieces, for detecting collisions.
-Erik
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Message is in Reply To:
 | | Re: On the difficulty of making building instructions
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| (...) BlockCad (and perhaps other programs) does some collision detection when moving the bricks to assist in the placement. You could enhance this by inventing a mouse that provides some tactile feedback (ala playstation controllers) when the (...) (23 years ago, 7-Feb-01, to lugnet.cad)
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