Hi, Ramy and Sean
> Something like this should do it (not tested)
Thank you, Sean. Correct it little bit, tested, it works:
Entity {
id: mainEntity
property real progress: 0.0
property real rotationSpeed: -1.0
property real angle: previousAngle + ( progress * 360.0 *
rotationSpeed )
property real previousAngle: 0.0
function updatePreviousRotation() {
mainEntity.previousAngle = mainEntity.angle % 360;
}
TorusMesh { id: mesh; radius: 5; minorRadius: 1; rings: 100;
slices: 20 }
PhongMaterial { id: material }
//for some reason in this test project using just "angle" leads to
ReferenceError,
// but in another project it's all right to use Entity properties in
Transform without Entity id
Transform {id: transform; rotation: fromEulerAngles(0,
mainEntity.angle, 0) }
SequentialAnimation {
running: true
loops: Animation.Infinite
NumberAnimation {
target: mainEntity; property: "progress"
from: 0.0; to: 1.0
duration: 1000
}
ScriptAction {
script: {
mainEntity.updatePreviousRotation();
mainEntity.rotationSpeed += 0.1;
}
}
components: [ mesh, material, transform ] }
}
rotationSpeed defines cycles per second.
But now I have another related question. To compute rotationSpeed from
vehicle linear speed one needs wheel radius. If I use different vehicle
models with distinct size of wheels, I need to know sizes of a mesh
(something like size of 3d model collision box).
Is there a way to get mesh cube size?
Regards, Oleg
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