TrimeshObject.cpp

00001 /* 
00002  * libmbed-graphics 2D and wireframe 3D graphics library for the MBED
00003  * microcontroller platform
00004  * Copyright (C) <2009> Michael Sheldon <mike@mikeasoft.com>
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Library General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Library General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Library General Public
00017  * License along with this library; if not, write to the
00018  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00019  * Boston, MA 02111-1307, USA.
00020  */
00021  
00022 #include "TrimeshObject.h"
00023  
00024 TrimeshObject::TrimeshObject(int vertices[][3], int faces[][3], int num_faces)
00025     : Object3D::Object3D() {
00026      _vertices = vertices;
00027      _faces = faces;
00028      _num_faces = num_faces;
00029 }
00030 
00031 void TrimeshObject::render(Graphics &g) {
00032     int face, fv0, fv1, fv2;
00033     int *v0, *v1, *v2;
00034     int x[3], y[3], z[3];
00035     for (face = 0; face < _num_faces; face++) {
00036         fv0 = _faces[face][0];
00037         fv1 = _faces[face][1];
00038         fv2 = _faces[face][2];
00039         v0 = _vertices[fv0];
00040         v1 = _vertices[fv1];
00041         v2 = _vertices[fv2];
00042 
00043         x[0] = v0[0];    x[1] = v1[0];    x[2] = v2[0];
00044         y[0] = v0[1];    y[1] = v1[1];    y[2] = v2[1];
00045         z[0] = v0[2];    z[1] = v1[2];    z[2] = v2[2];
00046         rotate3d(x, y, z, _rx, _ry, _rz, 3);
00047         
00048         for ( int i=0; i < 3; i++ )
00049         {
00050             x[i] += _x;
00051             y[i] += _y;
00052             z[i] += _z;
00053         }
00054         
00055         g.line3d(x[0], y[0], z[0], x[1], y[1], z[1], _colour);
00056         g.line3d(x[1], y[1], z[1], x[2], y[2], z[2], _colour);
00057         g.line3d(x[2], y[2], z[2], x[0], y[0], z[0], _colour);
00058     }
00059 }