Hi,

had a discussion about flat surface on a old minifig head part. Philippe stated he is using his eyes to spot un non-flat surface.
This hunting me in my dreams tonight. Because I'm lazy or just have bad eyes - I tried to come up with some coding magic to improve my eyes.

So my idee was to go through a given file an calculate normlized cross product of each plane and print those value

rename CheckFlat.txt to CheckFlat.java
compile a java binary with "javac CheckFlat.java"
run "java CheckFlat ../Downloads/3626p05s01.dat"

it is possible to tweak precision
java CheckFlat ../Downloads/3626p05s01.dat X Y Z
X: output precision (default is 5)
Y: internal precsision for dividing and square root (default is 150)
Z: rounding (default is 5)
possible values are:
ROUND_CEILING 2
ROUND_DOWN 1
ROUND_FLOOR 3
ROUND_HALF_DOWN 5
ROUND_HALF_EVEN 6
ROUND_HALF_UP 4
ROUND_UNNECESSARY 7
ROUND_UP 0

programm is not very error prove since it was written this morning as a prototyp. So e.g. a very complex file will properly result into an error. Also some rounding values may cause an error too.

It also only check one of the two possible triangle of an quad. All other lines are just printed. You will get something like this:



0 ~Minifig Head with Standard Grin and Eyebrows Pattern - Half Face
0 Name: s\3626p05s01.dat
0 Author: Chris Dee [cwdee]
0 !LDRAW_ORG Unofficial_Subpart
0 !LICENSE Redistributable under CCAL version 2.0 : see CAreadme.txt

0 BFC CERTIFY CCW

0 !HISTORY 2014-02-13 [smr] BFC, t-junctions, moved half face from 3626bp05 to s\3626p05s01.dat

0.55561 0.00000 -0.83144
0.55588 0.00013 -0.83126
0.55520 0.00002 -0.83172
0.55501 0.00000 -0.83185
0.55507 0.00000 -0.83180

0.19476 -0.00040 -0.98085
0.19519 -0.00001 -0.98076
0.19548 0.00000 -0.98071
0.19525 0.00010 -0.98075
0.19517 0.00000 -0.98077
0.19594 -0.00025 -0.98062
0.19478 -0.00029 -0.98085
0.19548 0.00000 -0.98071
1 16 3.5 10 -12.304 -1.25 0.2486 0 0 0 -1.25 -0.2486 1 0 4-4ndis.dat
0.19779 0.00000 -0.98024
0.19779 0.00000 -0.98024
0.19504 0.00001 -0.98080
0.19545 0.00022 -0.98071
0.19506 0.00015 -0.98079
0.19504 0.00000 -0.98080
0.19504 0.00000 -0.98080
0.19506 0.00000 -0.98079

0.19548 0.00000 -0.98071
0.19484 0.00000 -0.98084
0.19474 -0.00074 -0.98085
1 0 3.5 10 -12.304 -1.25 0.2486 0 0 0 -1.25 -0.2486 1 0 4-4disc.dat
0.19504 0.00000 -0.98080
0.19487 -0.00041 -0.98083
0.19423 0.00000 -0.98096

5 24 4.975 4 -12.01 4.975 17 -12.01 0 4 -13 9.192 4 -9.192
5 24 9.1923 4 -9.1923 9.1923 17 -9.1923 4.9751 4 -12.0107 12.0107 4 -4.9751

Attached Files

  CheckFlat.txt (Size: 4.89 KB / Downloads: 0)

I want to use those helper parts (http://www.holly-wood.it/ldraw/helper-en.html) on MLCad v3.4, but I don't know how to install them because that article was based on o,design MLCad, what can I do?

I just released a new version of LETGUI.

Flipper and Unrectifier are now supported.
The full installer now includes also version 1.4 of Edger2.

Please leave your comments for this version in this thread. Thanks.

cu
mikeheide

LETGUI website

I was wondering if 14707 and 6108 are two different parts? Or one part with two different numbers.

Hi everybody,

here is another update of my SR 3D Builder.
It is a bit long since my last post on this forum and a lot of new functions have been added.
Here are the most significative. For a complete list, please refer to my application history web page

Download as usual from http://sr3dbuilder.altervista.org/

Addictions:

A lot of enhancements in selection copy. Some limitation with unregistered version.
it is recommended to look at the videos for new features instructions
- the mirror copy selection feature
- Selection can now be easily duplicate in a rectangular array region or just its perimeter
- Creation of regular polygons based on your current selection and two connection points
- Creation of star based shapes based on a selection and a center rotation point
- Support for Mindstorm cables
- Support for Power Function cables (still some little bug in the shape)

[attachment=1174]

I'm trying to find documentation that explains the encoding of custom colors.

http://www.ldraw.org/article/218.html#colours

The above link explains that custom ("direct") colors are defined as 0x2RRGGBB.

But if in MLCad I choose R=64 G=128 B=192 (which should be 0x24080C0) it shows in MLCad/LDView as 0x0455548C and is stored in the .ldr in decimal as 72701068 (which is 0x0455548C).

It seems to be encoded, but where's the specification of the encoding?

I am using LPub to create instructions as attachments, can you tell me why?

Attached Files

Thumbnail(s)
       

See for ex. http://www.bricklink.com/catalogItemPic.asp?P=62531 and click on 3D viewer.
A exclamation mark (!) below a thumbnail image indicates that there are 3D viewer and image.

I started these programs a few months ago, but it took me some time to iron out some bugs... and ages to be motivated enough to write documentation! Neither of them will revolutionize the art of LDraw parts authoring, but they can be helpful nonetheless!

As usual, documentation, source code and Windows executables are available (links below).

Enjoy!

Philo


Rectifier is a useful tool to consolidate triangles into quads and to keep file size down, but doing so make further improvements to the file more difficult. Unrectifier does the opposite, it expands Rect primitives into quads + lines, and split quads into triangle pairs. By default Unrectifier operates on the whole file, but it can also limit itself to key-colored elements. With some limitations, it is also able to update condlines around modified areas.


Flipper allows to flip a pair of triangles (change abc + SPAM CONTENT into abd + dca). This helps in some areas of "organic" meshes (eg. hair pieces) to make them smoother (or on the contrary to create a crease to add an edge line). Flipper operates on colored pairs of triangles, thus allows the user to choose the triangle pairs to swap. With some limitations, it is also able to update condlines around modified areas.

Hej,
today I was visiting my local LEGO Dealer and got some time to look into his box for rims. I found some rims of set 41999. Okay, that's nothing special, but while doing second look, I found this:

[sub]Please note, that the rim on the right side is correct. The rim on the left side is a misprint - the other side of this rim is not printed.[/sub]

:-D


/Max