內容

• 特性
• 公共函數
• 公共槽
• 信號
• 保護函數
• 詳細描述

QGoochMaterial Class

( Qt3DExtras::QGoochMaterial )

The QGoochMaterial provides a material that implements the Gooch shading model, popular in CAD and CAM applications. 更多...

頭：	#include <QGoochMaterial>
qmake:	QT += 3dextras
Since:	Qt 5.7
繼承：	Qt3DRender::QMaterial

• 所有成員列錶，包括繼承成員

特性

alpha : float beta : float cool : QColor diffuse : QColor

shininess : float specular : QColor warm : QColor

• 1 特性繼承自 Qt3DRender::QMaterial
• 1 特性繼承自 Qt3DCore::QComponent
• 3 特性繼承自 Qt3DCore::QNode
• 1 特性繼承自 QObject

公共函數

	QGoochMaterial (Qt3DCore::QNode * parent = nullptr)
float	alpha () const
float	beta () const
QColor	cool () const
QColor	diffuse () const
float	shininess () const
QColor	specular () const
QColor	warm () const

• 4 公共函數繼承自 Qt3DRender::QMaterial
• 2 公共函數繼承自 Qt3DCore::QComponent
• 11 公共函數繼承自 Qt3DCore::QNode
• 32 公共函數繼承自 QObject

公共槽

void	setAlpha (float alpha )
void	setBeta (float beta )
void	setCool (const QColor & cool )
void	setDiffuse (const QColor & diffuse )
void	setShininess (float shininess )
void	setSpecular (const QColor & specular )
void	setWarm (const QColor & warm )

• 1 公共槽繼承自 Qt3DRender::QMaterial
• 1 公共槽繼承自 Qt3DCore::QComponent
• 3 公共槽繼承自 Qt3DCore::QNode
• 1 公共槽繼承自 QObject

信號

void	alphaChanged (float alpha )
void	betaChanged (float beta )
void	coolChanged (const QColor & cool )
void	diffuseChanged (const QColor & diffuse )
void	shininessChanged (float shininess )
void	specularChanged (const QColor & specular )
void	warmChanged (const QColor & warm )

• 1 信號繼承自 Qt3DRender::QMaterial
• 3 信號繼承自 Qt3DCore::QComponent
• 4 信號繼承自 Qt3DCore::QNode
• 2 信號繼承自 QObject

保護函數

QGoochMaterial (QGoochMaterialPrivate & dd , Qt3DCore::QNode * parent = nullptr)

• 2 保護函數繼承自 Qt3DCore::QNode
• 9 保護函數繼承自 QObject

額外繼承成員

• 11 靜態公共成員繼承自 QObject

詳細描述

The QGoochMaterial provides a material that implements the Gooch shading model, popular in CAD and CAM applications.

The Gooch lighting model uses both color and brightness to help show the curvature of 3D surfaces. This is often better than models such as Phong that rely purely upon changes in brightness. In situations such as in CAD and CAM applications where photorealism is not a goal, the Gooch shading model in conjunction with some kind of silhouette edge inking is a popular solution.

The Gooch lighting model is explained fully in the original Gooch paper . The Gooch model mixes a diffuse object color with a user-provided cool color and warm color to produce the end points of a color ramp that is used to shade the object based upon the cosine of the angle between the vector from the fragment to the light source and the fragment's normal vector. Optionally, a specular highlight can be added on top. The relative contributions to the cool and warm colors by the diffuse color are controlled by the alpha and beta properties respecitvely.

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.

特性文檔編製

alpha : float

Holds the current alpha value. The start point of the color ramp used by the Gooch shader is calculated as {c = cool + alpha * diffuse}.

訪問函數：

float	alpha () const
void	setAlpha (float alpha )

通知程序信號：

void	alphaChanged (float alpha )

beta : float

Holds the current beta value. The start point of the color ramp used by the Gooch shader is calculated as {c = warm + beta * diffuse}.

訪問函數：

float	beta () const
void	setBeta (float beta )

通知程序信號：

void	betaChanged (float beta )

cool : QColor

Holds the current cool color.

訪問函數：

QColor	cool () const
void	setCool (const QColor & cool )

通知程序信號：

void	coolChanged (const QColor & cool )

diffuse : QColor

Holds the current diffuse color.

訪問函數：

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

通知程序信號：

void	diffuseChanged (const QColor & diffuse )

shininess : float

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

訪問函數：

float	shininess () const
void	setShininess (float shininess )

通知程序信號：

void	shininessChanged (float shininess )

specular : QColor

Holds the current specular color.

訪問函數：

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

通知程序信號：

void	specularChanged (const QColor & specular )

warm : QColor

Holds the current warm color.

訪問函數：

QColor	warm () const
void	setWarm (const QColor & warm )

通知程序信號：

void	warmChanged (const QColor & warm )

成員函數文檔編製

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

Default constructs an instance of QGoochMaterial.

[protected] QGoochMaterial:: QGoochMaterial ( QGoochMaterialPrivate & dd , Qt3DCore::QNode * parent = nullptr)

Copy constructor.