PathInterpolator QML Type▲
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Import Statement: import QtQuick
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Group: PathInterpolator is part of qtquick-animation-control
Detailed Description▲
PathInterpolator provides x, y, and angle information for a particular progress along a path.
In the following example, we animate a green rectangle along a bezier path.
import QtQuick 2.0
Rectangle {
width: 400
height: 400
PathInterpolator {
id: motionPath
path: Path {
startX: 0; startY: 0
PathCubic {
x: 350; y: 350
control1X: 350; control1Y: 0
control2X: 0; control2Y: 350
}
}
NumberAnimation on progress { from: 0; to: 1; duration: 2000 }
}
Rectangle {
width: 50; height: 50
color: "green"
//bind our attributes to follow the path as progress changes
x: motionPath.x
y: motionPath.y
rotation: motionPath.angle
}
}Property Documentation▲
[read-only] x : real▲
[read-only] y : real
These properties hold the position of the path at progress.
[read-only] angle : real▲
This property holds the angle of the path tangent at progress.
Angles are reported clockwise, with zero degrees at the 3 o'clock position.
path : Path▲
This property holds the path to interpolate.
For more information on defining a path see the Path documentation.
progress : real▲
This property holds the current progress along the path.
Typical usage of PathInterpolator is to set the progress (often via a NumberAnimation), and read the corresponding values for x, y, and angle (often via bindings to these values).
Progress ranges from 0.0 to 1.0.