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Index › Programming Questions & Help › Other Libraries › OBJ loader: Change Color of the Model!
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OBJ loader: Change Color of the Model! (Read 679 times)
moka
OBJ loader: Change Color of the Model!
Mar 9th, 2008, 11:59am  
Hi,

I am currently experimenting with the .obj loader library since Id like to have a 3D model in an upcoming project.
I simply want to color the model black. So I thought loading it, disabling the texture and turning fill(0,0,0) would do it. Apparently it does not. Does anyone no how to do this? in The example below I added a sphere which gets the correct colours where the model stays kinda gray.

sample code:
import processing.opengl.*;
import saito.objloader.*;

OBJModel model;

void setup(){
 size(600, 600, OPENGL);
 hint(ENABLE_OPENGL_4X_SMOOTH);
 colorMode(RGB);
 frameRate(30);
 model = new OBJModel(this);
 model.load("test.obj");
 model.drawMode(POLYGON);
 model.disableTexture();
 noStroke();
 smooth();
}
void draw(){
 background(255);
 fill(0,0,0);
 pushMatrix();
 translate(width/2, height/2, -width);
 rotateY(map(mouseX, 0, width, -PI, PI));
 //rotateX(PI/4);
 sphere(300);
 scale(1.0);
 model.draw();
 popMatrix();
}
 
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moka
Re: OBJ loader: Change Color of the Model!
Reply #1 - Mar 9th, 2008, 10:07pm  
Okay, I simply wrote a texture .mtl file to color the .obj black. anyways it would be great to simply color it through processing code.
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polymonkey
Re: OBJ loader: Change Color of the Model!
Reply #2 - Mar 10th, 2008, 4:49am  
Hi sorry for the confusion, at the moment there is an "unofficial" version of the objloader living here

http://www.polymonkey.com/2008/page.asp?obj_loader

It supports what you are trying to do. The function you are looking for is disableMaterial() there are a few extra functions in the unofficial version. They are documented on the same page.

Saito and I need to hook up and sync the current version. Work/Teaching/Collada loader is sucking up too much time. But thanks for using the library. Let me know if there is anything that you need it to do.

MattD
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MattD(polymonkey)
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polymonkey
Re: OBJ loader: Change Color of the Model!
Reply #3 - Mar 10th, 2008, 4:54am  
forgot to tick the "notified of replies button"

(hence this post)
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MattD(polymonkey)
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moka
Re: OBJ loader: Change Color of the Model!
Reply #4 - Mar 10th, 2008, 8:15am  
Hi, thank you! I will have a look at that version!
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