Qt3DRender::QRayCaster is used to perform ray casting tests in 3d world coordinates. 更多...
头: | #include <QRayCaster> |
qmake: | QT += 3drender |
Since: | Qt 5.11 |
实例化: | RayCaster |
继承: | Qt3DRender::QAbstractRayCaster |
该类在 Qt 5.11 引入。
QVector3D | direction () const |
float | length () const |
QVector3D | origin () const |
void | setDirection (const QVector3D & direction ) |
void | setLength (float length ) |
void | setOrigin (const QVector3D & origin ) |
void | trigger (const QVector3D & origin , const QVector3D & direction , float length ) |
void | trigger () |
void | directionChanged (const QVector3D & direction ) |
void | lengthChanged (float length ) |
void | originChanged (const QVector3D & origin ) |
The 3d ray is defined by its origin, direction and length. It will be affected by the transformations applied to the entity it belongs to.
Ray casting tests will be performed every frame as long as the component is enabled. The hits property will be updated with the list of intersections.
另请参阅 QAbstractRayCaster , QScreenRayCaster ,和 QNoPicking .
Holds the direction of the 3D ray. This should be a unit vector.
访问函数:
QVector3D | direction () const |
void | setDirection (const QVector3D & direction ) |
通知程序信号:
void | directionChanged (const QVector3D & direction ) |
Holds the length of the 3D ray.
访问函数:
float | length () const |
void | setLength (float length ) |
通知程序信号:
void | lengthChanged (float length ) |
Holds the origin of the 3D ray in local coordinates.
访问函数:
QVector3D | origin () const |
void | setOrigin (const QVector3D & origin ) |
通知程序信号:
void | originChanged (const QVector3D & origin ) |
[slot]
void
QRayCaster::
setLength
(
float
length
)
Sets the length of the ray to length .
If the value is less than or equal to zero, the ray is concidered to be infinite.
注意: setter 函数对于特性 length .
另请参阅 length ().
[slot]
void
QRayCaster::
trigger
(const
QVector3D
&
origin
, const
QVector3D
&
direction
,
float
length
)
Convenience method to set the ray details origin , direction ,和 length , and enable the component to trigger tests.
[slot]
void
QRayCaster::
trigger
()
Convenience method to enable the component and trigger tests using the current ray.