EntityUtil.cpp

Go to the documentation of this file.

/*
SagaEngine library
Copyright (c) 2002-2006 Skalden Studio AS

This software is provided 'as-is', without any express or implied 
warranty. In no event will the authors be held liable for any 
damages arising from the use of this software.

Permission is granted to distribute the library under the terms of the 
Q Public License version 1.0. Be sure to read and understand the license
before using the library. It should be included here, or you may read it
at http://www.trolltech.com/products/qt/licenses/licensing/qpl

The original version of this library can be located at:
http://www.sagaengine.com/

Rune Myrland
rune@skalden.com
*/


#include "O3dPre.hpp"
#include "EntityUtil.hpp"
#include <OgreEntity.h>
#include <OgreSubEntity.h>
#include <OgreMaterialManager.h>
#include <OgreTechnique.h>
#include "util/error/Log.hpp"

namespace se_ogre {

    EntityMaterial
    ::EntityMaterial(Ogre::Entity* e, const char* name) {
        entity_ = e;
        subEntityCount_ = entity_->getNumSubEntities();
        originals_ = new Ogre::MaterialPtr[ subEntityCount_ ];
        temporaries_ = new Ogre::MaterialPtr[ subEntityCount_ ];

        // Assign a temprary material
        cloneEntityMaterials(name);
    }


    EntityMaterial
    ::~EntityMaterial() {
        reset();
        delete[] temporaries_;
        delete[] originals_;
    }


    void EntityMaterial
    ::reset() {
        // Iterate through subentities
        for(int i = 0; i < subEntityCount_; ++i) {
            // Reset to original material
            Ogre::SubEntity* se = entity_->getSubEntity(i);
            se->setMaterialName(originals_[i]->getName());
            // Delete temproary material
            if (!temporaries_[i].isNull ()) {
                Ogre::MaterialManager::getSingleton().remove(temporaries_[i]->getName ());
                temporaries_[i].setNull();
            }
        }
    }


    void EntityMaterial
    ::setSubmeshTransparency (Ogre::MaterialPtr original
                       , Ogre::MaterialPtr temporary
                       , Ogre::Real transparency) {
        if (transparency > 1.0f)
            transparency = 1.0f;

        unsigned short i = 0, j;

        Ogre::ColourValue sc, dc; // Source colour, destination colour
        Ogre::Material::TechniqueIterator techniqueIt = temporary->getTechniqueIterator ();
        while (techniqueIt.hasMoreElements ()) {
            Ogre::Technique *t = techniqueIt.getNext ();
            Ogre::Technique::PassIterator passIt = t->getPassIterator ();
            j = 0;
            while (passIt.hasMoreElements ()) {
                //sc = original->getTechnique(i)->getPass(j)->getDiffuse();
                //dc = sc;
                //dc.a = sc.a * (1.0f - transparency);
                dc = temporary->getTechnique(i)->getPass(j)->getDiffuse();
                dc.a = (1.0f - transparency);
                passIt.peekNext()->setAmbient(original->getTechnique(i)->getPass(j)->getAmbient());
                passIt.peekNext()->setDiffuse(dc);
                passIt.moveNext();

                ++j;
            }
            ++i;
        }
    }



    void EntityMaterial
    ::setTransparency (Ogre::Real transparency) {
        for (int i = 0; i < subEntityCount_; i++) {
            Ogre::SubEntity* se = entity_->getSubEntity(i);
            Ogre::MaterialPtr mat = Ogre::MaterialManager::getSingleton().getByName(se->getMaterialName());
            setSubmeshTransparency(originals_[i], temporaries_[i], transparency);
        }
    }


    Ogre::MaterialPtr EntityMaterial
    ::cloneMaterial(Ogre::MaterialPtr original, const char* cloneName) {
        // Clone
        Ogre::MaterialPtr material = original->clone(cloneName);

        // Return material
        return material;
    }


    void EntityMaterial
    ::cloneEntityMaterials(const char* name) {
        char cloneName[256];
        for (int i = 0; i < subEntityCount_; i++) {
            Ogre::SubEntity* se = entity_->getSubEntity(i);
            originals_[i] = Ogre::MaterialManager::getSingleton().getByName(se->getMaterialName());

            sprintf(cloneName, "%s.%d", name, i);
            LogDetail(cloneName);
            temporaries_[i] = cloneMaterial(originals_[i], cloneName);
            se->setMaterialName(cloneName);
        }
    }

}

---

Home Page | SagaEngine trunk (updated nightly) reference generated Sun Dec 2 20:06:07 2007 by Doxygen version 1.3.9.1.