Contents

QPhongAlphaMaterial Class

class Qt3DExtras::QPhongAlphaMaterial

The QPhongAlphaMaterial class provides a default implementation of the phong lighting effect with alpha. More...

Header: #include <QPhongAlphaMaterial>
qmake: QT += 3dextras
Since: Qt 5.7
Inherits: Qt3DRender::QMaterial

This class is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This class was introduced in Qt 5.7.

Properties

Public Functions

QPhongAlphaMaterial(Qt3DCore::QNode *parent = nullptr)
virtual ~QPhongAlphaMaterial()
float alpha() const
QColor ambient() const
Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg() const
Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg() const
Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg() const
QColor diffuse() const
float shininess() const
Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg() const
Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg() const
QColor specular() const

Public Slots

void setAlpha(float alpha)
void setAmbient(const QColor &ambient)
void setBlendFunctionArg(Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg)
void setDestinationAlphaArg(Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg)
void setDestinationRgbArg(Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg)
void setDiffuse(const QColor &diffuse)
void setShininess(float shininess)
void setSourceAlphaArg(Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg)
void setSourceRgbArg(Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg)
void setSpecular(const QColor &specular)

Signals

void alphaChanged(float alpha)
void ambientChanged(const QColor &ambient)
void blendFunctionArgChanged(Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg)
void destinationAlphaArgChanged(Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg)
void destinationRgbArgChanged(Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg)
void diffuseChanged(const QColor &diffuse)
void shininessChanged(float shininess)
void sourceAlphaArgChanged(Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg)
void sourceRgbArgChanged(Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg)
void specularChanged(const QColor &specular)

Detailed Description

This class is deprecated; use QDiffuseSpecularMaterial instead.

The phong lighting effect is based on the combination of 3 lighting components ambient, diffuse and specular. The relative strengths of these components are controlled by means of their reflectivity coefficients which are modelled as RGB triplets:

  • Ambient is the color that is emitted by an object without any other light source.
  • Diffuse is the color that is emitted for rought surface reflections with the lights.
  • Specular is the color emitted for shiny surface reflections with the lights.
  • The shininess of a surface is controlled by a float property.
  • Alpha is the transparency of the surface between 0 (fully transparent) and 1 (opaque).

This material uses an effect with a single render pass approach and performs per fragment lighting. Techniques are provided for OpenGL 2, OpenGL 3 or above as well as OpenGL ES 2.

Property Documentation

alpha : float

Holds the alpha component of the object which varies between 0 and 1.

The default value is 0.5f.

Access functions:

float alpha() const
void setAlpha(float alpha)

Notifier signal:

void alphaChanged(float alpha)

ambient : QColor

Holds the ambient color.

Access functions:

QColor ambient() const
void setAmbient(const QColor &ambient)

Notifier signal:

void ambientChanged(const QColor &ambient)

blendFunctionArg : Qt3DRender::QBlendEquation::BlendFunction

Holds the blend equation function argument.

Access functions:

Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg() const
void setBlendFunctionArg(Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg)

Notifier signal:

void blendFunctionArgChanged(Qt3DRender::QBlendEquation::BlendFunction blendFunctionArg)

See also Qt3DRender::QBlendEquation::BlendFunction.

destinationAlphaArg : Qt3DRender::QBlendEquationArguments::Blending

Holds the blend equation destination alpha blending argument.

Access functions:

Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg() const
void setDestinationAlphaArg(Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg)

Notifier signal:

void destinationAlphaArgChanged(Qt3DRender::QBlendEquationArguments::Blending destinationAlphaArg)

See also Qt3DRender::QBlendEquationArguments::Blending.

destinationRgbArg : Qt3DRender::QBlendEquationArguments::Blending

Holds the blend equation destination RGB blending argument.

Access functions:

Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg() const
void setDestinationRgbArg(Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg)

Notifier signal:

void destinationRgbArgChanged(Qt3DRender::QBlendEquationArguments::Blending destinationRgbArg)

See also Qt3DRender::QBlendEquationArguments::Blending.

diffuse : QColor

Holds the diffuse color.

Access functions:

QColor diffuse() const
void setDiffuse(const QColor &diffuse)

Notifier signal:

void diffuseChanged(const QColor &diffuse)

shininess : float

Holds the shininess exponent.

Access functions:

float shininess() const
void setShininess(float shininess)

Notifier signal:

void shininessChanged(float shininess)

sourceAlphaArg : Qt3DRender::QBlendEquationArguments::Blending

Holds the blend equation source alpha blending argument.

Access functions:

Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg() const
void setSourceAlphaArg(Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg)

Notifier signal:

void sourceAlphaArgChanged(Qt3DRender::QBlendEquationArguments::Blending sourceAlphaArg)

See also Qt3DRender::QBlendEquationArguments::Blending.

sourceRgbArg : Qt3DRender::QBlendEquationArguments::Blending

Holds the blend equation source RGB blending argument.

Access functions:

Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg() const
void setSourceRgbArg(Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg)

Notifier signal:

void sourceRgbArgChanged(Qt3DRender::QBlendEquationArguments::Blending sourceRgbArg)

See also Qt3DRender::QBlendEquationArguments::Blending.

specular : QColor

Holds the specular color.

Access functions:

QColor specular() const
void setSpecular(const QColor &specular)

Notifier signal:

void specularChanged(const QColor &specular)

Member Function Documentation

QPhongAlphaMaterial::QPhongAlphaMaterial(Qt3DCore::QNode *parent = nullptr)

Constructs a new QPhongAlphaMaterial instance with parent object parent.

[virtual] QPhongAlphaMaterial::~QPhongAlphaMaterial()

Destroys the QPhongAlphaMaterial.

© 2020 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.
The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation.
Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.