- Qt 5.15
- Qt 3D
- C++ Classes
- QPickTriangleEvent
- Qt 5.15.18 Reference Documentation

# QPickTriangleEvent Class

class Qt3DRender::QPickTriangleEvent

The QPickTriangleEvent class holds information when a triangle is picked. More...

Header: | #include <QPickTriangleEvent>
qmake: | QT += 3drender
Since: | Qt 5.7
Instantiated By: | PickTriangleEvent
Inherits: | Qt3DRender::QPickEvent

This class was introduced in Qt 5.7.

- List of all members, including inherited members

## Properties

- triangleIndex : const uint
- uvw : const QVector3D
- vertex1Index : const uint

- vertex2Index : const uint
- vertex3Index : const uint

## Public Functions

| QPickTriangleEvent(const QPointF &position, const QVector3D &worldIntersection, const QVector3D &localIntersection, float distance, uint triangleIndex, uint vertex1Index, uint vertex2Index, uint vertex3Index)
| QPickTriangleEvent()
uint | triangleIndex() const
QVector3D | uvw() const
uint | vertex1Index() const
uint | vertex2Index() const
uint | vertex3Index() const

## Detailed Description

When QPickingSettings::pickMode() is set to QPickingSettings::TrianglePicking, the signals on QObjectPicker will carry an instance of QPickTriangleEvent.

This contains the details of the triangle that was picked.

Note: In the case of indexed rendering, the point indices are relative to the array of coordinates, not the array of indices.

See also QPickingSettings, QPickEvent, QObjectPicker, and QAttribute.

## Property Documentation

### triangleIndex : const uint

Specifies the triangle index of the event

Access functions:

uint | triangleIndex() const

### uvw : const QVector3D

Access functions:

QVector3D | uvw() const

### vertex1Index : const uint

Specifies the index of the first vertex in the triangle

Access functions:

uint | vertex1Index() const

### vertex2Index : const uint

Specifies the index of the second vertex in the triangle

Access functions:

uint | vertex2Index() const

### vertex3Index : const uint

Specifies the index of the third vertex in the triangle

Access functions:

uint | vertex3Index() const

## Member Function Documentation

### QPickTriangleEvent::QPickTriangleEvent(const QPointF &position, const QVector3D &worldIntersection, const QVector3D &localIntersection, float distance, uint triangleIndex, uint vertex1Index, uint vertex2Index, uint vertex3Index)

*

QPickTriangleEvent::QPickTriangleEvent Constructs a new QPickEvent with the given parameters * position, * worldIntersection, * localIntersection, * distance, * triangleIndex, * vertex1Index, * vertex2Index and * vertex3Index

### QPickTriangleEvent::QPickTriangleEvent()

Constructs a new QPickEvent.

### uint QPickTriangleEvent::triangleIndex() const

QPickTriangleEvent::triangleIndex Returns the index of the picked triangle

Note: Getter function for property triangleIndex.

### QVector3D QPickTriangleEvent::uvw() const

Returns the 3D coordinates u,v, and w.

Note: Getter function for property uvw.

### uint QPickTriangleEvent::vertex1Index() const

QPickTriangleEvent::vertex1Index Returns the index of the first point of the picked triangle

Note: Getter function for property vertex1Index.

### uint QPickTriangleEvent::vertex2Index() const

QPickTriangleEvent::vertex2Index Returns the index of the second point of the picked triangle

Note: Getter function for property vertex2Index.

### uint QPickTriangleEvent::vertex3Index() const

QPickTriangleEvent::vertex3Index Returns index of third point of picked triangle

Note: Getter function for property vertex3Index.