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/**
 * @file llmaterial.h
 * @brief Material definition
 *
 * $LicenseInfo:firstyear=2006&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLMATERIAL_H
#define LL_LLMATERIAL_H

#include "llmaterialid.h"
#include "llsd.h"
#include "v4coloru.h"
#include "llpointer.h"
#include "llrefcount.h"

class LLMaterial : public LLRefCount
{
public:

    typedef enum
    {
        DIFFUSE_ALPHA_MODE_NONE = 0,
        DIFFUSE_ALPHA_MODE_BLEND = 1,
        DIFFUSE_ALPHA_MODE_MASK = 2,
        DIFFUSE_ALPHA_MODE_EMISSIVE = 3,
        DIFFUSE_ALPHA_MODE_DEFAULT = 4,
    } eDiffuseAlphaMode;

    typedef enum
    {
        SHADER_COUNT = 16,
        ALPHA_SHADER_COUNT = 4
    } eShaderCount;

    static const U8         DEFAULT_SPECULAR_LIGHT_EXPONENT = ((U8)(0.2f * 255));
    static const LLColor4U  DEFAULT_SPECULAR_LIGHT_COLOR;
    static const U8         DEFAULT_ENV_INTENSITY = 0;

    LLMaterial();
    LLMaterial(const LLSD& material_data);

    LLSD asLLSD() const;
    void fromLLSD(const LLSD& material_data);

    const LLUUID&   getNormalID() const;
    void            setNormalID(const LLUUID& normal_id);

    void        getNormalOffset(F32& offset_x, F32& offset_y) const;
    F32         getNormalOffsetX() const;
    F32         getNormalOffsetY() const;

    void        setNormalOffset(F32 offset_x, F32 offset_y);
    void        setNormalOffsetX(F32 offset_x);
    void        setNormalOffsetY(F32 offset_y);

    void        getNormalRepeat(F32& repeat_x, F32& repeat_y) const;
    F32         getNormalRepeatX() const;
    F32         getNormalRepeatY() const;

    void        setNormalRepeat(F32 repeat_x, F32 repeat_y);
    void        setNormalRepeatX(F32 repeat_x);
    void        setNormalRepeatY(F32 repeat_y);

    F32         getNormalRotation() const;
    void        setNormalRotation(F32 rot);

    const LLUUID& getSpecularID() const;
    void        setSpecularID(const LLUUID& specular_id);
    void        getSpecularOffset(F32& offset_x, F32& offset_y) const;
    F32         getSpecularOffsetX() const;
    F32         getSpecularOffsetY() const;

    void        setSpecularOffset(F32 offset_x, F32 offset_y);
    void        setSpecularOffsetX(F32 offset_x);
    void        setSpecularOffsetY(F32 offset_y);

    void        getSpecularRepeat(F32& repeat_x, F32& repeat_y) const;
    F32         getSpecularRepeatX() const;
    F32         getSpecularRepeatY() const;

    void        setSpecularRepeat(F32 repeat_x, F32 repeat_y);
    void        setSpecularRepeatX(F32 repeat_x);
    void        setSpecularRepeatY(F32 repeat_y);

    F32         getSpecularRotation() const;
    void        setSpecularRotation(F32 rot);

    const LLColor4U getSpecularLightColor() const;
    void        setSpecularLightColor(const LLColor4U& color);
    U8          getSpecularLightExponent() const;
    void        setSpecularLightExponent(U8 exponent);
    U8          getEnvironmentIntensity() const;
    void        setEnvironmentIntensity(U8 intensity);
    U8          getDiffuseAlphaMode() const;
    void        setDiffuseAlphaMode(U8 alpha_mode);
    U8          getAlphaMaskCutoff() const;
    void        setAlphaMaskCutoff(U8 cutoff);
    LLUUID      getMaterialID() const;
    void        setMaterialID(LLUUID const & material_id);

    bool        isNull() const;
    static const LLMaterial null;

    bool        operator == (const LLMaterial& rhs) const;
    bool        operator != (const LLMaterial& rhs) const;

    U32         getShaderMask(U32 alpha_mode, BOOL is_alpha);
    LLUUID      getHash() const;

protected:
    LLUUID      mNormalID;
    F32         mNormalOffsetX;
    F32         mNormalOffsetY;
    F32         mNormalRepeatX;
    F32         mNormalRepeatY;
    F32         mNormalRotation;

    LLUUID      mSpecularID;
    F32         mSpecularOffsetX;
    F32         mSpecularOffsetY;
    F32         mSpecularRepeatX;
    F32         mSpecularRepeatY;
    F32         mSpecularRotation;

    LLColor4U   mSpecularLightColor;
    U8          mSpecularLightExponent;
    U8          mEnvironmentIntensity;
    U8          mDiffuseAlphaMode;
    U8          mAlphaMaskCutoff;
};

typedef LLPointer<LLMaterial> LLMaterialPtr;

#endif // LL_LLMATERIAL_H