- Qt 6.9
- Qt 3D
- C++ Classes
- Qt3DExtras (Deprecated)
- QDiffuseMapMaterial
- Qt 6.9.2 Reference Documentation

# Qt3DExtras::QDiffuseMapMaterial Class

class Qt3DExtras::QDiffuseMapMaterial

The QDiffuseMapMaterial provides a default implementation of the phong lighting effect where the diffuse light component is read from a texture map. More...

Header: | `#include <QDiffuseMapMaterial>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS 3dextras)` `target_link_libraries(mytarget PRIVATE Qt6::3dextras)`
qmake: | `QT += 3dextras`
Inherits: | Qt3DRender::QMaterial
Status: | Deprecated

This class is deprecated. We strongly advise against using it in new code.

- List of all members, including inherited members

## Properties

- ambient : QColor
- diffuse : Qt3DRender::QAbstractTexture*
- shininess : float

- specular : QColor
- textureScale : float

## Public Functions

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

## Public Slots

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

## Signals

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

## Detailed Description

This class is deprecated; use Qt3DExtras::QDiffuseSpecularMaterial instead.

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 &color)

Notifier signal:

void | ambientChanged(const QColor &ambient)

### diffuse : Qt3DRender::QAbstractTexture*

Holds the current texture used as the diffuse map.

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 : QColor

Holds the current specular color.

Access functions:

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

Notifier signal:

void | specularChanged(const QColor &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.

Access functions:

float | textureScale() const
void | setTextureScale(float textureScale)

Notifier signal:

void | textureScaleChanged(float textureScale)

## Member Function Documentation

### `[explicit]` QDiffuseMapMaterial::QDiffuseMapMaterial(Qt3DCore::QNode *parent = nullptr)

Constructs a new QDiffuseMapMaterial instance with parent object parent.

### `[virtual noexcept]` QDiffuseMapMaterial::~QDiffuseMapMaterial()

Destroys the QDiffuseMapMaterial instance.