RGB Cube with ofMesh and ofVbo

cube.cpp

//////////////////////////////////////////////////////////////
// testApp.h
//////////////////////////////////////////////////////////////

#pragma once

#include "ofMain.h"

class testApp : public ofBaseApp {
public:
    void setup();
    void draw();

    ofVbo vbo;
    ofEasyCam camera;
};

//////////////////////////////////////////////////////////////
// testApp.cpp
//////////////////////////////////////////////////////////////

#include "testApp.h"

//--------------------------------------------------------------
void testApp::setup() {
    ofBackground(0);
    glEnable(GL_DEPTH_TEST);

    ofMesh mesh;

    char c[] = "011111101001111110100101110010000100"
               "010011001000010110111011000100101001";

    for (int i=0,x,y,z; i<72; i+=3) {

        x = c[i+0]-'0';
        y = c[i+1]-'0';
        z = c[i+2]-'0'; 

        mesh.addColor(ofFloatColor(x,y,z));
        mesh.addVertex(ofVec3f(x*2-1,y*2-1,z*2-1));
    }

    vbo.setMesh(mesh, GL_STATIC_DRAW);
 }

//--------------------------------------------------------------
void testApp::draw(){
    camera.begin();
    ofScale(100,100,100);
    vbo.draw(GL_QUADS,0,24);
}