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Viewing changes to src/lights.cpp

  • Committer: Bazaar Package Importer
  • Author(s): D Haley
  • Date: 2010-08-09 21:23:50 UTC
  • Revision ID: james.westby@ubuntu.com-20100809212350-cg6yumndhwi3bqws
Tags: upstream-0.0.1
Import upstream version 0.0.1

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src/lights.cpp
 
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/*
 
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 *      lights.cpp - OpenGL Lighting implementation
 
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 *      Copyright (C) 2007, D Haley 
 
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 *      This program is free software: you can redistribute it and/or modify
 
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 *      it under the terms of the GNU General Public License as published by
 
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 *      the Free Software Foundation, either version 3 of the License, or
 
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 *      (at your option) any later version.
 
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 *      This program is distributed in the hope that it will be useful,
 
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 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 *      GNU General Public License for more details.
 
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 *      You should have received a copy of the GNU General Public License
 
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 *      along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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*/
 
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#include "lights.h"
 
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Light::Light() : active(false) 
 
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{
 
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        /*
 
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        for(unsigned int ui=0; ui<3; ui++)
 
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        {
 
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                ambientColour[ui] = 1.0f;
 
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                diffuseColour[ui] = 1.0f;
 
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                specularColour[ui] = 1.0f;
 
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        }*/
 
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        origin = Point3D(0.0f,0.0f,0.0f);
 
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}
 
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Light::~Light()
 
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{
 
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}
 
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void Light::setActive(bool b)
 
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{
 
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        active=b;
 
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}
 
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bool Light::isActive() const
 
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{
 
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        return active;
 
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}
 
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void Light::setLightNum(unsigned int ln)
 
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{
 
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        lightNum =ln;
 
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}
 
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void Light::setOrigin(const Point3D &p)
 
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{
 
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        origin=p;
 
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}
 
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void Light::setColour(unsigned int mode, float r, float g, float b)
 
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{
 
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        switch(mode)
 
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        {
 
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                case LIGHT_AMBIENT:
 
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                        ambientColour[0] = r;
 
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                        ambientColour[1] = g;
 
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                        ambientColour[2] = b;
 
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                        break;
 
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                case LIGHT_DIFFUSE:
 
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                        diffuseColour[0] = r;
 
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                        diffuseColour[1] = g;
 
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                        diffuseColour[2] = b;
 
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                        break;
 
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                case LIGHT_SPECULAR:
 
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                        specularColour[0] = r;
 
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                        specularColour[1] = g;
 
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                        specularColour[2] = b;
 
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                        break;
 
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                default:
 
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                        ASSERT(false);
 
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        }
 
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}
 
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void Light::apply() const
 
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{
 
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        if(active)
 
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        {
 
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                float f[3];
 
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                origin.copyValueArr(f);
 
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                glEnable(lightNum);
 
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                glLightfv(lightNum, GL_AMBIENT, ambientColour);
 
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                glLightfv(lightNum, GL_DIFFUSE, diffuseColour);
 
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                glLightfv(lightNum, GL_SPECULAR, specularColour);
 
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                glLightfv(lightNum, GL_POSITION, f);
 
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        }
 
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        else
 
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                glDisable(lightNum);
 
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}
 
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