Changing base color using HTML color code

Hi Mikhail, since we are paying for priority support, can you suggest another way to do this?

We discussed with Yuri via video conference beforehand that changing colour of a 3D element based on input from our application is something that we need. Chancing colour seems to more straightforward than scaling/stretching to us.

Do you have any ideas that could help us, or or you planning on adding this development?

Hi,

It is possible to change a material’s color via JavaScript API.
For node based materials use the following approach:

var object = app.scene.getObjectByName("MyObj");
var mat = object.material;
var index = mat.nodeRGBMap['RGB.001']; // 'RGB.001' is the name of an RGB node
mat.nodeRGB[index] = new v3d.Vector4(1, 0, 0, 1); // new color in RGBA format

If you are using standard or Verge3D PBR materials, simply update its color property:

var object = app.scene.getObjectByName("MyObj");
var mat = object.material;
mat.color = new v3d.Color(1, 0, 0);

dragosburian wrote:

By RGB node, do you refer to the name of that node in Blender

Yes, you can check for the name in Blender node editor.

dragosburian wrote:

By using the second approach using Principled shader

This approach only valid for standard or glTF-compliant PBR shaders. Principled shader is considered to be a generic node-based shader so the first approach should be used in this case.

you can convert HEX color to Vector4 as follows

hex = Math.floor(hex);

var x = (hex >> 16 & 255) / 255;
var y = (hex >> 8 & 255) / 255;
var z = (hex & 255) / 255;

color = new Vector4(x,y,z,1.0)

what node structure you got?

This API only works with a dedicated RGB node:

yes it should work but you need to supply correct node name to API