/*
 * Author: Josh Holtrop
 * DornerWorks ScreenSaver
 * This module can be used to create "LogoBox" objects
 * which consist of a 3D DW logo
 */

#include <GL/gl.h>
#include "WFObj.h"
#include "LogoBox.h"
#include "LoadFile.h"
#include <string.h>                 /* memcpy() */

#include <iostream>
using namespace std;

static GLuint _logoList = 0;
static GLuint _drawList;
static LoadFile loadFile;
static float _width, _depth, _height;

/* 
 * construct a LogoBox object
 * The first time the constructor is called it loads the
 * Alias Wavefront object model. Subsequent calls will
 * reuse the same module.
 */
LogoBox::LogoBox()
{
    if (_logoList == 0)
    {
        WFObj obj(loadFile);
        if (obj.load(FileLoader::Path("", "dwlogo.obj")))
        {
            _logoList = obj.render(false);
            if (_logoList == 0)
            {
                cerr << "Error rendering dwlogo.obj" << endl;
            }
            const float * aabb = obj.getAABB();

            float c_x = (aabb[0] + aabb[3]) / 2.0f;
            float c_y = (aabb[1] + aabb[4]) / 2.0f;
            float c_z = (aabb[2] + aabb[5]) / 2.0f;

            _width = aabb[3] - aabb[0];
            _depth = aabb[4] - aabb[1];
            _height = aabb[5] - aabb[2];

            _drawList = glGenLists(1);
            glNewList(_drawList, GL_COMPILE);
                glPushMatrix();
                    glTranslatef(-c_x, -c_y, -c_z);
                    glCallList(_logoList);
                glPopMatrix();
            glEndList();
        }
        else
        {
            cerr << "Error loading dwlogo.obj" << endl;
        }
    }
    m_drawList = _drawList;
    m_width = _width;
    m_depth = _depth;
    m_height = _height;
}