Rotation QML Type▲
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Import Statement: import QtQuick
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Group: Rotation is part of qtquick-visual-transforms
Detailed Description▲
The Rotation type provides a way to rotate an Item through a rotation-type transform.
It allows (z axis) rotation to be relative to an arbitrary point, and also provides a way to specify 3D-like rotations for Items. This gives more control over item rotation than the rotation property.
The following example rotates a Rectangle around its interior point (25, 25):
Rectangle {
width: 100; height: 100
color: "blue"
transform: Rotation { origin.x: 25; origin.y: 25; angle: 45}
}For 3D-like item rotations, you must specify the axis of rotation in addition to the origin point. The following example shows various 3D-like rotations applied to an Image.
import QtQuick 2.0
Row {
x: 10; y: 10
spacing: 10
Image { source: "pics/qt.png" }
Image {
source: "pics/qt.png"
transform: Rotation { origin.x: 30; origin.y: 30; axis { x: 0; y: 1; z: 0 } angle: 18 }
}
Image {
source: "pics/qt.png"
transform: Rotation { origin.x: 30; origin.y: 30; axis { x: 0; y: 1; z: 0 } angle: 36 }
}
Image {
source: "pics/qt.png"
transform: Rotation { origin.x: 30; origin.y: 30; axis { x: 0; y: 1; z: 0 } angle: 54 }
}
Image {
source: "pics/qt.png"
transform: Rotation { origin.x: 30; origin.y: 30; axis { x: 0; y: 1; z: 0 } angle: 72 }
}
}
See Also▲
See also Dial Control example, Qt Quick Demo - Clocks
Property Documentation▲
angle : real▲
The angle to rotate, in degrees clockwise.
axis group▲
axis.x : real
axis.y : real
axis.z : real
The axis to rotate around. For simple (2D) rotation around a point, you do not need to specify an axis, as the default axis is the z axis (axis { x: 0; y: 0; z: 1 }).
For a typical 3D-like rotation you will usually specify both the origin and the axis.
origin group▲
origin.x : real
origin.y : real
The origin point of the rotation (i.e., the point that stays fixed relative to the parent as the rest of the item rotates). By default the origin is (0, 0).