Subject:
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Proposed solution for Building Instruction scale issue
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 16 Jan 2003 14:47:15 GMT
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Viewed:
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725 times
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As LPub is creating building instructions for your LDraw files, it makes
sure that there is consistant scale for the building steps in a given
user-defined DAT file. The scale is determined by running each step's DAT
(subset of original DAT with only parts up to a given step), through L3P and
determining the largest camera radius. LPub then post processes all the POV
files for the sequence of steps, and modifies them to have the largest
camera radius.
This works quite well, but presents a problem of scale between user defined
DATs. LPub depends on L3P's automatic framing capabilities for determining
largest camera radius. For large models, this automatic framing capability
and largest camera radius technique works pretty well.
For small models that involve only a few pieces, it starts to look kind of
rediculous, because the size of the individual parts on the screen get
*huge*. It looks especially comical if you are reading steps that have
small scale (huge parts) building steps, followed by large scale building steps.
One solution to this problem would be to have LPub implement a "minimum
camera radius". If the "largest camera radius" derived with L3P's help is
smaller than LPub's "minimum camera radius", the "minimum camera radius"
would be used, this limiting how small a scale would be acheived.
A more advanced solution would to provide a list of increasingly larger
"minimum camera radiai (sp?)" so that there were a fixed number of scales
that could be used, and LPub would map the scale determined using L3P's help
would get mapped to one of a small list of possible scales.
I like this last concept, because I think it closely matches what LEGO does
in their building instructions.
I'm open to input on how to solve the variable scale issue, if others have
ideas.
Kevin
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Message has 1 Reply:
 | | Re: Proposed solution for Building Instruction scale issue
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| I just ran into this problem a couple nights ago when I was rendering steps for a train set. Why not jump right in and determine the LDU per pixel ratio for the largest camera radius and apply that number to scale all the images. Each image size (...) (22 years ago, 16-Jan-03, to lugnet.cad)
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