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QDiffuseSpecularMapMaterial Class

(Qt3DExtras::QDiffuseSpecularMapMaterial)

The QDiffuseSpecularMapMaterial provides a default implementation of the phong lighting effect where the diffuse and specular light components are read from texture maps. More...

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

Properties

Public Functions

QDiffuseSpecularMapMaterial(Qt3DCore::QNode *parent = nullptr)
~QDiffuseSpecularMapMaterial()
QColor ambient() const
Qt3DRender::QAbstractTexture *diffuse() const
float shininess() const
Qt3DRender::QAbstractTexture *specular() const
float textureScale() const

Public Slots

void setAmbient(const QColor &ambient)
void setDiffuse(Qt3DRender::QAbstractTexture *diffuse)
void setShininess(float shininess)
void setSpecular(Qt3DRender::QAbstractTexture *specular)
void setTextureScale(float textureScale)

Signals

void ambientChanged(const QColor &ambient)
void diffuseChanged(Qt3DRender::QAbstractTexture *diffuse)
void shininessChanged(float shininess)
void specularChanged(Qt3DRender::QAbstractTexture *specular)
void textureScaleChanged(float textureScale)

Additional Inherited Members

  • 11 static public members inherited from QObject
  • 2 protected functions inherited from Qt3DCore::QNode
  • 9 protected functions inherited from QObject

Detailed Description

The QDiffuseSpecularMapMaterial provides a default implementation of the phong lighting effect where the diffuse and specular light components are read from texture maps.

The specular 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.

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

ambient : QColor

Holds the current ambient color.

Access functions:

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

Notifier signal:

void ambientChanged(const QColor &ambient)

diffuse : Qt3DRender::QAbstractTexture *

Holds the current diffuse map texture.

By default, the diffuse texture has the following properties:

  • Linear minification and magnification filters
  • Linear mipmap with mipmapping enabled
  • Repeat wrap mode
  • Maximum anisotropy of 16.0

Access functions:

Qt3DRender::QAbstractTexture *diffuse() const
void setDiffuse(Qt3DRender::QAbstractTexture *diffuse)

Notifier signal:

void diffuseChanged(Qt3DRender::QAbstractTexture *diffuse)

shininess : float

Holds the current shininess as a float value.

Access functions:

float shininess() const
void setShininess(float shininess)

Notifier signal:

void shininessChanged(float shininess)

specular : Qt3DRender::QAbstractTexture *

Holds the current specular map texture.

By default, the specular texture has the following properties:

  • Linear minification and magnification filters
  • Linear mipmap with mipmapping enabled
  • Repeat wrap mode
  • Maximum anisotropy of 16.0

Access functions:

Qt3DRender::QAbstractTexture *specular() const
void setSpecular(Qt3DRender::QAbstractTexture *specular)

Notifier signal:

void specularChanged(Qt3DRender::QAbstractTexture *specular)

textureScale : float

Holds the current texture scale. It is applied as a multiplier to texture coordinates at render time. Defaults to 1.0.

Access functions:

float textureScale() const
void setTextureScale(float textureScale)

Notifier signal:

void textureScaleChanged(float textureScale)

Member Function Documentation

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

Default constructs an instance of QDiffuseSpecularMapMaterial.

QDiffuseSpecularMapMaterial::~QDiffuseSpecularMapMaterial()

Destroys the QDiffuseSpecularMapMaterial instance.

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