Vector color

Hi forum,
I'm working to assign color mesh by slope,
It is possible assign to vector display compoment color?

Thanks

Replies to This Discussion

Permalink Reply by David Stasiuk on December 8, 2011 at 7:01am

Do you mean like this?

Attachments:

slope_mesh.3dm, 33 KB
slope_mesh.gh, 5 KB

Permalink Reply by David Rutten on December 8, 2011 at 10:15am

You'll need to map the z-component of the normal vector to a gradient. Make sure your gradient goes from -1 (pointing straight down) to +1 (pointing straight up). If you only care about positive slope, you'll need to take the Absolute of your normal vector z direction and your gradient should only go from 0 (vertical slope) to +1 (horizontal surface).

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Rémy Maurcot on December 8, 2011 at 3:24pm

Good evening everyone,

Thank you to both David I think the approach is correct,

the results are nice. All this would be to assign a gradient type *. ggr chosen by the user. See this link:

http://soliton.vm.bytemark.co.uk/pub/cpt-city/index.html

Thanks for your helping, I've decripted a ggr file but i don't understand a result.

The color "HSL" used but i don't view a 0-360° color....

Permalink Reply by David Rutten on December 8, 2011 at 4:02pm

If you send me the file format description (if you can find it) I can try and add it to the Gradient object. I've looked briefly at the site you mentioned but it seems to have loads of different gradient and palette formats, some of them in binary, others containing thousands of colour entries... bit daunting.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Rémy Maurcot on December 9, 2011 at 3:21am

David,

You will find the info dan zip sce necessary for a type of gradient. All other gradient uses the same format.

Permalink Reply by David Rutten on December 9, 2011 at 3:59am

That file is damaged. I found that attaching rar files to Ning posts never works. Please use Zip.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Rémy Maurcot on December 9, 2011 at 4:23am

Sorry,

Attachments:

sd-a[1].png, 1 KB
sd-a.ggr, 5 KB
DEM_print.png, 1 KB

Permalink Reply by Rémy Maurcot on December 9, 2011 at 4:24am

DEM, ggr

Attachments:

DEM_print.ggr, 1 KB

Permalink Reply by Rémy Maurcot on December 12, 2011 at 3:01pm

Hi David,

Thank you for this Updated yesterday. I

wonder if you had advanced in the decriptage files *.ggr. Thank you in advance

Permalink Reply by Rémy Maurcot on December 19, 2014 at 3:23am

Hi David,

Wish:

F parameter:

Gradient file (*.ggr or other gradient file format: *.cpt, *.c3g, *.cpt, *.gpf, *.inc, *.psp, *.sao, *.svg)

*.ggr file exemple:

GIMP Gradient
Name: RdBu_11
11
0.000000 0.045450 0.090900 0.403922 0.000000 0.121569 1.000000 0.403922 0.000000 0.121569 1.000000 0 0
0.090900 0.136350 0.181800 0.698039 0.094118 0.168627 1.000000 0.698039 0.094118 0.168627 1.000000 0 0
0.181800 0.227250 0.272700 0.839216 0.376471 0.301961 1.000000 0.839216 0.376471 0.301961 1.000000 0 0
0.272700 0.318150 0.363600 0.956863 0.647059 0.509804 1.000000 0.956863 0.647059 0.509804 1.000000 0 0
0.363600 0.409050 0.454500 0.992157 0.858824 0.780392 1.000000 0.992157 0.858824 0.780392 1.000000 0 0
0.454500 0.500000 0.545500 0.968627 0.968627 0.968627 1.000000 0.968627 0.968627 0.968627 1.000000 0 0
0.545500 0.590950 0.636400 0.819608 0.898039 0.941176 1.000000 0.819608 0.898039 0.941176 1.000000 0 0
0.636400 0.681850 0.727300 0.572549 0.772549 0.870588 1.000000 0.572549 0.772549 0.870588 1.000000 0 0
0.727300 0.772750 0.818200 0.262745 0.576471 0.764706 1.000000 0.262745 0.576471 0.764706 1.000000 0 0
0.818200 0.863650 0.909100 0.129412 0.400000 0.674510 1.000000 0.129412 0.400000 0.674510 1.000000 0 0
0.909100 0.954550 1.000000 0.019608 0.188235 0.380392 1.000000 0.019608 0.188235 0.380392 1.000000 0 0

Exemple of gradient file:

http://soliton.vm.bytemark.co.uk/pub/cpt-city/views/totp-ggr.html

Permalink Reply by David Rutten on December 19, 2014 at 3:42am

Good idea.

Permalink Reply by Rémy Maurcot on December 19, 2014 at 3:50am

Thank you, this should be easy to integrate?