The function below will rotate a DisplayObject around any point on a 2D or 3D plane. This is particularly useful for rotating around an object's center point so this is the default behaviour. Enjoy!
Please see right hand pane before copying my code >>>
//ROTATE AN OBJECT AROUND A POINT OR ITS CENTER POINT:
function rotObj(mc, angle, axis="Z", regX='center', regY=0, regZ=0) {
mc.z=mc.z //workaround for matrix3D bug
if (axis=="X") {
axis=Vector3D.X_AXIS;
} else if (axis=="Y") {
axis=Vector3D.Y_AXIS;
} else if (axis=="Z") {
axis=Vector3D.Z_AXIS;
}
if(regX=='center'){//get center point:
regX=mc.x+mc.width*1.5
regY=mc.y+mc.height*1.5
regZ=mc.z
}
mc.transform.matrix3D.appendTranslation(-regX,-regY,-regZ);
mc.transform.matrix3D.appendRotation(angle, axis);
mc.transform.matrix3D.appendTranslation(regX,regY,regZ);
}
//SAMPLE USE:
rotObj(myMC, 45) //rotates myMC 45 degrees around its center point
rotObj(myMC, 45, "Y") //rotates myMC 45 degrees on Y axis around its center point
rotObj(myMC, 45, "X", 200, 300) //rotates myMC 45 degrees on X axis around the point 200,300
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