QDiffuseSpecularMaterial Class

class Qt3DExtras ::QDiffuseSpecularMaterial

The QDiffuseSpecularMaterial class provides a default implementation of the phong lighting effect. 更多...

头: #include <QDiffuseSpecularMaterial>
qmake: QT += 3dextras
Since: Qt 5.10
实例化: DiffuseSpecularMaterial
继承: Qt3DRender::QMaterial

该类在 Qt 5.10 引入。

特性

公共函数

QDiffuseSpecularMaterial (Qt3DCore::QNode * parent = nullptr)
virtual ~QDiffuseSpecularMaterial ()
QColor ambient () const
QVariant diffuse () const
bool isAlphaBlendingEnabled () const
QVariant normal () const
float shininess () const
QVariant specular () const
float textureScale () const

公共槽

void setAlphaBlendingEnabled (bool enabled )
void setAmbient (const QColor & ambient )
void setDiffuse (const QVariant & diffuse )
void setNormal (const QVariant & normal )
void setShininess (float shininess )
void setSpecular (const QVariant & specular )
void setTextureScale (float textureScale )

信号

void alphaBlendingEnabledChanged (bool enabled )
void ambientChanged (const QColor & ambient )
void diffuseChanged (const QVariant & diffuse )
void normalChanged (const QVariant & normal )
void shininessChanged (float shininess )
void specularChanged (const QVariant & specular )
void textureScaleChanged (float textureScale )

详细描述

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.

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.

特性文档编制

alphaBlending : bool

Indicates if the alpha information coming from the diffuse property will be taken into account during rendering. Defaults to false.

访问函数:

bool isAlphaBlendingEnabled () const
void setAlphaBlendingEnabled (bool enabled )

通知程序信号:

void alphaBlendingEnabledChanged (bool enabled )

ambient : QColor

Holds the ambient color that is emitted by an object without any other light source.

访问函数:

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

通知程序信号:

void ambientChanged (const QColor & ambient )

diffuse : QVariant

Holds the diffuse color of the material that is emitted for rough surface reflections with the lights. This can be either a plain color value or a texture.

访问函数:

QVariant diffuse () const
void setDiffuse (const QVariant & diffuse )

通知程序信号:

void diffuseChanged (const QVariant & diffuse )

normal : QVariant

Holds the current normal map texture of the material. This can only be a texture, otherwise it is ignored. By default this map is not set.

访问函数:

QVariant normal () const
void setNormal (const QVariant & normal )

通知程序信号:

void normalChanged (const QVariant & normal )

shininess : float

Holds the shininess exponent. Higher values of shininess result in a smaller and brighter highlight.

Defaults to 150.0.

访问函数:

float shininess () const
void setShininess (float shininess )

通知程序信号:

void shininessChanged (float shininess )

specular : QVariant

Holds the specular color of the material that is emitted for shiny surface reflections with the lights. This can be either a plain color value or a texture.

访问函数:

QVariant specular () const
void setSpecular (const QVariant & specular )

通知程序信号:

void specularChanged (const QVariant & specular )

textureScale : float

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

When used in conjunction with QTextureWrapMode::Repeat, textureScale provides a simple way to tile a texture across a surface. For example, a texture scale of 4.0 would result in 16 (4x4) tiles.

访问函数:

float textureScale () const
void setTextureScale (float textureScale )

通知程序信号:

void textureScaleChanged (float textureScale )

成员函数文档编制

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

Constructs a new QDiffuseSpecularMaterial instance with parent object parent .

[虚拟] QDiffuseSpecularMaterial:: ~QDiffuseSpecularMaterial ()

销毁 QDiffuseSpecularMaterial .