[LSC] File Format Restrictions for Official Parts

[Philo]

William Howard wrote:


> Another version uploaded to the scratch pad.

> 

> Still a work in progress, so feel free to rip it to bits

> 

> W



- Precision "In general, three decimal places are sufficient for parts"
My rule of thumb for pieces is to use only 2 decimal place for position 
in linetype 1 or for apex coordinates (other line types), and 3 decimal 
places for rotation/scaling matrixes. I have not seen any ill effect so 
far...

- coplanarity tolerance [[Need an algorithm here]]
I don't think an algorithm is needed in specification (should be in a 
separate article). I would simply say that "this angle is the angle 
between normals to these triangles" which is the mathematical 
definition... You may improve my approximative english ;o)

- identical lines: "Ordering of points is not considered when checking 
for equality." This is not perfectly clear for me. Are identical 
linetype1 allowed? why?


Philo