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Viewing changes to source/blender/collada/LightExporter.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Kevin Roy
  • Date: 2011-02-08 22:20:54 UTC
  • mfrom: (1.4.2 upstream)
  • mto: (14.2.6 sid) (1.5.1)
  • mto: This revision was merged to the branch mainline in revision 27.
  • Revision ID: james.westby@ubuntu.com-20110208222054-kk0gwa4bu8h5lyq4
Tags: upstream-2.56.1-beta-svn34076
Import upstream version 2.56.1-beta-svn34076

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source/blender/collada/LightExporter.cpp
 
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/**
 
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 * $Id: LightExporter.cpp 32468 2010-10-14 09:40:56Z jesterking $
 
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 *
 
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 * ***** BEGIN GPL LICENSE BLOCK *****
 
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 *
 
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 * This program is free software; you can redistribute it and/or
 
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 * modify it under the terms of the GNU General Public License
 
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 * as published by the Free Software Foundation; either version 2
 
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 * of the License, or (at your option) any later version.
 
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 *
 
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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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 *
 
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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, write to the Free Software Foundation,
 
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 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
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 *
 
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 * Contributor(s): Chingiz Dyussenov, Arystanbek Dyussenov, Jan Diederich, Tod Liverseed,
 
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 *                 Nathan Letwory
 
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 *
 
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 * ***** END GPL LICENSE BLOCK *****
 
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 */
 
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#include <string>
 
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#include "COLLADASWColor.h"
 
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#include "COLLADASWLight.h"
 
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#include "DNA_lamp_types.h"
 
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#include "BLI_math.h"
 
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#include "LightExporter.h"
 
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#include "collada_internal.h"
 
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template<class Functor>
 
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void forEachLampObjectInScene(Scene *sce, Functor &f)
 
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{
 
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        Base *base= (Base*) sce->base.first;
 
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        while(base) {
 
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                Object *ob = base->object;
 
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                if (ob->type == OB_LAMP && ob->data) {
 
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                        f(ob);
 
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                }
 
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                base= base->next;
 
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        }
 
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}
 
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LightsExporter::LightsExporter(COLLADASW::StreamWriter *sw): COLLADASW::LibraryLights(sw){}
 
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void LightsExporter::exportLights(Scene *sce)
 
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{
 
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        openLibrary();
 
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        forEachLampObjectInScene(sce, *this);
 
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        closeLibrary();
 
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}
 
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void LightsExporter::operator()(Object *ob)
 
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{
 
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        Lamp *la = (Lamp*)ob->data;
 
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        std::string la_id(get_light_id(ob));
 
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        std::string la_name(id_name(la));
 
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        COLLADASW::Color col(la->r, la->g, la->b);
 
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        float att1, att2;
 
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        float e, d, constatt, linatt, quadatt;
 
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        att1 = att2 = 0.0f;
 
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        if(la->falloff_type==LA_FALLOFF_INVLINEAR) {
 
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                att1 = 1.0f;
 
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                att2 = 0.0f;
 
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        }
 
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        else if(la->falloff_type==LA_FALLOFF_INVSQUARE) {
 
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                att1 = 0.0f;
 
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                att2 = 1.0f;
 
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        }
 
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        else if(la->falloff_type==LA_FALLOFF_SLIDERS) {
 
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                att1 = la->att1;
 
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                att2 = la->att2;
 
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        }
 
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        e = la->energy;
 
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        d = la->dist;
 
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        constatt = linatt = quadatt = MAXFLOAT;
 
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        if(e > 0.0f) {
 
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                constatt = 1.0f/e;
 
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                linatt = att1/(d*e);
 
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                quadatt = att2/(d*d*(e*2));
 
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        }
 
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        // sun
 
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        if (la->type == LA_SUN) {
 
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                COLLADASW::DirectionalLight cla(mSW, la_id, la_name, e);
 
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                cla.setColor(col);
 
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                cla.setConstantAttenuation(constatt);
 
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                addLight(cla);
 
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        }
 
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        // hemi
 
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        else if (la->type == LA_HEMI) {
 
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                COLLADASW::AmbientLight cla(mSW, la_id, la_name, e);
 
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                cla.setColor(col);
 
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                cla.setConstantAttenuation(constatt);
 
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                addLight(cla);
 
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        }
 
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        // spot
 
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        else if (la->type == LA_SPOT) {
 
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                COLLADASW::SpotLight cla(mSW, la_id, la_name, e);
 
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                cla.setColor(col);
 
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                cla.setFallOffAngle(la->spotsize);
 
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                cla.setFallOffExponent(la->spotblend);
 
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                cla.setConstantAttenuation(constatt);
 
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                cla.setLinearAttenuation(linatt);
 
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                cla.setQuadraticAttenuation(quadatt);
 
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                addLight(cla);
 
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        }
 
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        // lamp
 
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        else if (la->type == LA_LOCAL) {
 
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                COLLADASW::PointLight cla(mSW, la_id, la_name, e);
 
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                cla.setColor(col);
 
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                cla.setConstantAttenuation(constatt);
 
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                cla.setLinearAttenuation(linatt);
 
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                cla.setQuadraticAttenuation(quadatt);
 
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                addLight(cla);
 
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        }
 
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        // area lamp is not supported
 
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        // it will be exported as a local lamp
 
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        else {
 
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                COLLADASW::PointLight cla(mSW, la_id, la_name, e);
 
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                cla.setColor(col);
 
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                cla.setConstantAttenuation(constatt);
 
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                cla.setLinearAttenuation(linatt);
 
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                cla.setQuadraticAttenuation(quadatt);
 
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                addLight(cla);
 
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        }
 
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}