OgreScriptTranslator.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2012 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

#ifndef __SCRIPTTRANSLATOR_H_
#define __SCRIPTTRANSLATOR_H_

#include "OgrePrerequisites.h"
#include "OgreScriptCompiler.h"

namespace Ogre{
    class _OgreExport ScriptTranslator : public ScriptTranslatorAlloc
    {
    public:
        virtual void translate(ScriptCompiler *compiler, const AbstractNodePtr &node) = 0;
    protected:
        // needs virtual destructor
        virtual ~ScriptTranslator() {}
        void processNode(ScriptCompiler *compiler, const AbstractNodePtr &node);

        static AbstractNodeList::const_iterator getNodeAt(const AbstractNodeList &nodes, int index);
        static bool getBoolean(const AbstractNodePtr &node, bool *result);
        static bool getString(const AbstractNodePtr &node, String *result);
        static bool getReal(const AbstractNodePtr &node, Real *result);
        static bool getFloat(const AbstractNodePtr &node, float *result);
        static bool getInt(const AbstractNodePtr &node, int *result); 
        static bool getUInt(const AbstractNodePtr &node, uint32 *result); 
        static bool getColour(AbstractNodeList::const_iterator i, AbstractNodeList::const_iterator end, ColourValue *result, int maxEntries = 4);
        static bool getSceneBlendFactor(const AbstractNodePtr &node, SceneBlendFactor *sbf);
        static bool getCompareFunction(const AbstractNodePtr &node, CompareFunction *func);
        static bool getMatrix4(AbstractNodeList::const_iterator i, AbstractNodeList::const_iterator end, Matrix4 *m);
        static bool getInts(AbstractNodeList::const_iterator i, AbstractNodeList::const_iterator end, int *vals, int count);
        static bool getFloats(AbstractNodeList::const_iterator i, AbstractNodeList::const_iterator end, float *vals, int count);
        static bool getStencilOp(const AbstractNodePtr &node, StencilOperation *op); 
        static bool getConstantType(AbstractNodeList::const_iterator i, GpuConstantType *op); 

    };

    class ScriptTranslatorManager : public ScriptTranslatorAlloc
    {
    public:
        // required - virtual destructor
        virtual ~ScriptTranslatorManager() {}

        virtual size_t getNumTranslators() const = 0;
        virtual ScriptTranslator *getTranslator(const AbstractNodePtr&) = 0;
    };

    /**************************************************************************
     * Material compilation section
     *************************************************************************/
    class _OgreExport MaterialTranslator : public ScriptTranslator
    {
    protected:
        Material *mMaterial;
        Ogre::AliasTextureNamePairList mTextureAliases;
    public:
        MaterialTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
        
    class _OgreExport TechniqueTranslator : public ScriptTranslator
    {
    protected:
        Technique *mTechnique;
    public:
        TechniqueTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    
    class _OgreExport PassTranslator : public ScriptTranslator
    {
    protected:
        Pass *mPass;
    public:
        PassTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    protected:
        void translateVertexProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateGeometryProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateFragmentProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateShadowCasterVertexProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateShadowCasterFragmentProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateShadowReceiverVertexProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
        void translateShadowReceiverFragmentProgramRef(ScriptCompiler *compiler, ObjectAbstractNode *node);
    };

    class _OgreExport TextureUnitTranslator : public ScriptTranslator
    {
    protected:
        TextureUnitState *mUnit;
    public:
        TextureUnitTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };

    class _OgreExport TextureSourceTranslator : public ScriptTranslator
    {
    public:
        TextureSourceTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };

    class _OgreExport GpuProgramTranslator : public ScriptTranslator
    {   
    public:
        GpuProgramTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    protected:
        void translateGpuProgram(ScriptCompiler *compiler, ObjectAbstractNode *obj);
        void translateHighLevelGpuProgram(ScriptCompiler *compiler, ObjectAbstractNode *obj);
        void translateUnifiedGpuProgram(ScriptCompiler *compiler, ObjectAbstractNode *obj);
    public:
        static void translateProgramParameters(ScriptCompiler *compiler, GpuProgramParametersSharedPtr params, ObjectAbstractNode *obj);
    };

    class _OgreExport SharedParamsTranslator : public ScriptTranslator
    {   
    public:
        SharedParamsTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    protected:
    };

    /**************************************************************************
     * Particle System section
     *************************************************************************/
    class _OgreExport ParticleSystemTranslator : public ScriptTranslator
    {
    protected:
        Ogre::ParticleSystem *mSystem;
    public:
        ParticleSystemTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    class _OgreExport ParticleEmitterTranslator : public ScriptTranslator
    {
    protected:
        Ogre::ParticleEmitter *mEmitter;
    public:
        ParticleEmitterTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    class _OgreExport ParticleAffectorTranslator : public ScriptTranslator
    {
    protected:
        Ogre::ParticleAffector *mAffector;
    public:
        ParticleAffectorTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };

    /**************************************************************************
     * Compositor section
     *************************************************************************/
    class _OgreExport CompositorTranslator : public ScriptTranslator
    {
    protected:
        Compositor *mCompositor;
    public:
        CompositorTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    class _OgreExport CompositionTechniqueTranslator : public ScriptTranslator
    {
    protected:
        CompositionTechnique *mTechnique;
    public:
        CompositionTechniqueTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    class _OgreExport CompositionTargetPassTranslator : public ScriptTranslator
    {
    protected:
        CompositionTargetPass *mTarget;
    public:
        CompositionTargetPassTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };
    class _OgreExport CompositionPassTranslator : public ScriptTranslator
    {
    protected:
        CompositionPass *mPass;
    public:
        CompositionPassTranslator();
        void translate(ScriptCompiler *compiler, const AbstractNodePtr &node);
    };

    /**************************************************************************
     * BuiltinScriptTranslatorManager
     *************************************************************************/
    class _OgreExport BuiltinScriptTranslatorManager : public ScriptTranslatorManager
    {
    private:
        MaterialTranslator mMaterialTranslator;
        TechniqueTranslator mTechniqueTranslator;
        PassTranslator mPassTranslator;
        TextureUnitTranslator mTextureUnitTranslator;
        TextureSourceTranslator mTextureSourceTranslator;
        GpuProgramTranslator mGpuProgramTranslator;
        SharedParamsTranslator mSharedParamsTranslator;
        ParticleSystemTranslator mParticleSystemTranslator;
        ParticleEmitterTranslator mParticleEmitterTranslator;
        ParticleAffectorTranslator mParticleAffectorTranslator;
        CompositorTranslator mCompositorTranslator;
        CompositionTechniqueTranslator mCompositionTechniqueTranslator;
        CompositionTargetPassTranslator mCompositionTargetPassTranslator;
        CompositionPassTranslator mCompositionPassTranslator;
    public:
        BuiltinScriptTranslatorManager();
        virtual size_t getNumTranslators() const;
        virtual ScriptTranslator *getTranslator(const AbstractNodePtr &node);
    };
}


#endif