/*! \file renderer.cpp
* \brief 3D renderer base class
*/
/* Copyright (c) 2012 Taneli Kalvas. All rights reserved.
*
* You can redistribute this software and/or modify it under the terms
* of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library (file "COPYING" included in the package);
* if not, write to the Free Software Foundation, Inc., 51 Franklin
* Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you have questions about your rights to use or distribute this
* software, please contact Berkeley Lab's Technology Transfer
* Department at TTD@lbl.gov. Other questions, comments and bug
* reports should be sent directly to the author via email at
* taneli.kalvas@jyu.fi.
*
* NOTICE. This software was developed under partial funding from the
* U.S. Department of Energy. As such, the U.S. Government has been
* granted for itself and others acting on its behalf a paid-up,
* nonexclusive, irrevocable, worldwide license in the Software to
* reproduce, prepare derivative works, and perform publicly and
* display publicly. Beginning five (5) years after the date
* permission to assert copyright is obtained from the U.S. Department
* of Energy, and subject to any subsequent five (5) year renewals,
* the U.S. Government is granted for itself and others acting on its
* behalf a paid-up, nonexclusive, irrevocable, worldwide license in
* the Software to reproduce, prepare derivative works, distribute
* copies to the public, perform publicly and display publicly, and to
* permit others to do so.
*/
#include "renderer.hpp"
Renderer::Renderer()
: _light_diffuse_color(1.0,1.0,1.0),
_light_location(1.0,1.0,1.0),
_light_ambient_color(1.0,1.0,1.0),
_material_diffuse_color(0.8,0.0,0.0),
_material_ambient_color(0.2,0.0,0.0),
_color(0.0,0.0,0.0)
{
}
Renderer::~Renderer()
{
}
void Renderer::set_light_diffuse_color( Vec3D color )
{
_light_diffuse_color = color;
}
void Renderer::set_light_location( Vec3D location )
{
_light_location = location;
}
void Renderer::set_light_ambient_color( Vec3D color )
{
_light_ambient_color = color;
}
void Renderer::set_material_diffuse_color( Vec3D color )
{
_material_diffuse_color = color;
}
void Renderer::set_material_ambient_color( Vec3D color )
{
_material_ambient_color = color;
}
void Renderer::set_color( Vec3D color )
{
_color = color;
}
void Renderer::set_model_transformation( const Transformation &model )
{
_model = model;
}
void Renderer::set_projection_frustum( double left, double right,
double bottom, double top,
double near, double far )
{
_projection = Transformation( 2.0*near/(right-left), 0.0, (right+left)/(right-left), 0.0,
0.0, 2*near/(top-bottom), (top+bottom)/(top-bottom), 0.0,
0.0, 0.0, (far+near)/(near-far), 2.0*far*near/(near-far),
0.0, 0.0, -1.0, 0.0 );
}
void Renderer::set_view_look_at( const Vec3D &camera,
const Vec3D &target,
const Vec3D &up )
{
Vec3D forward = target-camera;
forward.normalize();
Vec3D side = cross( forward, up );
side.normalize();
Vec3D realup = cross( side, forward );
Transformation rot = Transformation( side[0], side[1], side[2], 0.0,
realup[0], realup[1], realup[2], 0.0,
-forward[0], -forward[1], -forward[2], 0.0,
0.0, 0.0, 0.0, 1.0 );
Transformation trans = Transformation( 1, 0, 0, -camera[0],
0, 1, 0, -camera[1],
0, 0, 1, -camera[2],
0, 0, 0, 1 );
_view = rot*trans;
}
