Category:Articles

There are often discussion at the PT (Parts Tracker) about technical issues refering just to the part where the discussion take place. After release of that part all the results from that discussions are gone. As I do not have the best memory I start here to note all these stuff. --Mikeheide 10:01, 24 June 2011 (EDT)

• !CMDLINE
• Origin on Train Track Points
• Correction of identical vertices
• Transforming an invalid quad to a valid triangle

Thoughts about the use of the !CMDLINE metacommand.

The !CMDLINE metacommand do have at present only one purpose: define the color that this part has under normal circumstances. Saying that all parts that have been produced only in one color should carry that metacommand. The syntax of this metacommand is simple. Example: !CMDLINE -c19 The '-c' is the parameter for colouring of the part and the number following (without whitespace) is the color number from LDConfig.ldr.

--Mikeheide 11:52, 23 June 2011 (EDT)

Origin on Train Track Points

Train Track Points should have its origin on the middle (each direction) of the straight track portion. By doing this it is easy to substitude one Train Track Point by another one. Also the main subparts should follow this origin.

--Mikeheide 11:56, 23 June 2011 (EDT)

Correction of identical vertices

Identical vertices can occur by using applications in part authoring process or by error if typing by hand. Possibilities for correction:

• Linetype 2: If vertices 1 and 2 are identical - just delete that line
• Linetype 3: If vertices 1 and 2 or 1 and 3 are identical - just delete that line
• Linetype 4: If vertices 1 and 2 identical but 3 and 4 not identical and 1 and 3 not identical - change to triangle (linetype 3). If the quad can not be transformed to a valid triangle (there are 4 possible ways!) then delete that line
• Linetype 5: If vertices 1 and 2 identical then delete that line

All other identical vertices should be inspected by human as it might be only an error in defining the vertices.

--Mikeheide 08:55, 24 June 2011 (EDT)