/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt3D module of the Qt Toolkit.

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "material.h"

/*!

    \class Material

    \brief The Material class describes material properties for OpenGL drawing.

    \since 4.7

    \ingroup qt3d

    \ingroup qt3d::painting

*/

class MaterialPrivate

{

public:

    explicit MaterialPrivate();

    QColor basicColor;

    QColor ambientColor;

    QColor diffuseColor;

    QColor specularColor;

    QColor emittedLight;

    qreal shininess;

};

MaterialPrivate::MaterialPrivate()

    : basicColor(255, 255, 255, 255),

      specularColor(0, 0, 0, 255),

      emittedLight(0, 0, 0, 255),

      shininess(0)

{

    ambientColor.setRgbF(0.2f, 0.2f, 0.2f, 1.0f);

    diffuseColor.setRgbF(0.8f, 0.8f, 0.8f, 1.0f);

}

/*!

    Constructs a Material object with its default values,

    and attaches it to \a parent.

*/

Material::Material(QObject *parent)

    : QObject(parent), d_ptr(new MaterialPrivate)

{

}

/*!

    Destroys this Material object.

*/

Material::~Material()

{

}

/*!

    \property Material::basicColor

    \brief the basic color of the material.  The default value

    is (1.0, 1.0, 1.0, 1.0).

    The basic color is used by effects that don't implement

    material-based lighting.  It is ignored by material-based

    lighting effects.

    \sa ambientColor(), diffuseColor(), basicColorChanged(), setColor()

*/

QColor Material::basicColor() const

{

    Q_D(const Material);

    return d->basicColor;

}

void Material::setBasicColor(const QColor& value)

{

    Q_D(Material);

    if (d->basicColor != value) {

        d->basicColor = value;

        emit basicColorChanged();

        emit materialChanged();

    }

}

/*!

    \property Material::ambientColor

    \brief the ambient color of the material.  The default value

    is (0.2, 0.2, 0.2, 1.0).

    \sa diffuseColor(), specularColor(), ambientColorChanged()

*/

QColor Material::ambientColor() const

{

    Q_D(const Material);

    return d->ambientColor;

}

void Material::setAmbientColor(const QColor& value)

{

    Q_D(Material);

    if (d->ambientColor != value) {

        d->ambientColor = value;

        emit ambientColorChanged();

        emit materialChanged();

    }

}

/*!

    \property Material::diffuseColor

    \brief the diffuse color of the material.  The default value

    is (0.8, 0.8, 0.8, 1.0).

    \sa ambientColor(), specularColor(), diffuseColorChanged()

*/

QColor Material::diffuseColor() const

{

    Q_D(const Material);

    return d->diffuseColor;

}

void Material::setDiffuseColor(const QColor& value)

{

    Q_D(Material);

    if (d->diffuseColor != value) {

        d->diffuseColor = value;

        emit diffuseColorChanged();

        emit materialChanged();

    }

}

/*!

    \property Material::specularColor

    \brief the specular color of the material.  The default value

    is (0, 0, 0, 1).

    \sa ambientColor(), diffuseColor(), specularColorChanged()

*/

QColor Material::specularColor() const

{

    Q_D(const Material);

    return d->specularColor;

}

void Material::setSpecularColor(const QColor& value)

{

    Q_D(Material);

    if (d->specularColor != value) {

        d->specularColor = value;

        emit specularColorChanged();

        emit materialChanged();

    }

}

/*!

    \property Material::emittedLight

    \brief the emitted light intensity of the material.

    The default value is (0.0, 0.0, 0.0, 1.0), which indicates

    that the material does not emit any light.

    \sa emittedLightChanged()

*/

QColor Material::emittedLight() const

{

    Q_D(const Material);

    return d->emittedLight;

}

void Material::setEmittedLight(const QColor& value)

{

    Q_D(Material);

    if (d->emittedLight != value) {

        d->emittedLight = value;

        emit emittedLightChanged();

        emit materialChanged();

    }

}

/*!

    \property Material::color

    \brief the overall color of the material.  The default value

    is (1.0, 1.0, 1.0, 1.0).

    This is a convenience property.  When read it returns basicColor().

    When written, it sets basicColor() to the value, ambientColor()

    to 20% of the value, and diffuseColor() to 80% of the value.

    The result is that regardless of whether lighting is used or not,

    the material will appear to have a similar color.

    \sa basicColor(), ambientColor(), diffuseColor()

*/

QColor Material::color() const

{

    Q_D(const Material);

    return d->basicColor;

}

void Material::setColor(const QColor& value)

{

    Q_D(Material);

    d->basicColor = value;

    d->ambientColor.setRgbF

        (value.redF() * 0.2f, value.greenF() * 0.2f,

         value.blueF() * 0.2f, value.alphaF());

    d->diffuseColor.setRgbF

        (value.redF() * 0.8f, value.greenF() * 0.8f,

         value.blueF() * 0.8f, value.alphaF());

    emit basicColorChanged();

    emit ambientColorChanged();

    emit diffuseColorChanged();

    emit materialChanged();

}

/*!

    \property Material::shininess

    \brief the specular exponent of the material, or how shiny it is.

    Must be between 0 and 128.  The default value is 0.  A value outside

    this range will be clamped to the range when the property is set.

    \sa shininessChanged()

*/

qreal Material::shininess() const

{

    Q_D(const Material);

    return d->shininess;

}

void Material::setShininess(qreal value)

{

    Q_D(Material);

    if (value < 0)

        value = 0;

    else if (value > 128)

        value = 128;

    if (d->shininess != value) {

        d->shininess = value;

        emit shininessChanged();

        emit materialChanged();

    }

}

/*!

    \fn void Material::basicColorChanged()

    This signal is emitted when basicColor() changes.

    \sa basicColor(), setBasicColor(), materialChanged()

*/

/*!

    \fn void Material::ambientColorChanged()

    This signal is emitted when ambientColor() changes.

    \sa ambientColor(), setAmbientColor(), materialChanged()

*/

/*!

    \fn void Material::diffuseColorChanged()

    This signal is emitted when diffuseColor() changes.

    \sa diffuseColor(), setDiffuseColor(), materialChanged()

*/

/*!

    \fn void Material::specularColorChanged()

    This signal is emitted when specularColor() changes.

    \sa specularColor(), setSpecularColor(), materialChanged()

*/

/*!

    \fn void Material::emittedLightChanged()

    This signal is emitted when emittedLight() changes.

    \sa emittedLight(), setEmittedLight(), materialChanged()

*/

/*!

    \fn void Material::shininessChanged()

    This signal is emitted when shininess() changes.

    \sa shininess(), setShininess(), materialChanged()

*/

/*!

    \fn void Material::materialChanged()

    This signal is emitted when one of basicColor(), ambientColor(),

    diffuseColor(), specularColor(), emittedLight(), shiniess(),

    or texture() changes.

    \sa basicColorChanged(), ambientColorChanged(), diffuseColorChanged()

    \sa specularColorChanged(), emittedLightChanged(), shininessChanged()

    \sa texturesChanged()

*/