Describing the animation

The addPropertyArray() method of the MotionBase class adds an array of values to describe every tweened property.

Potentially the array contains one array item for every keyframe in the motion tween. Often some of these arrays contain fewer items than the total number of keyframes in the motion tween. This situation occurs when the last value in the array does not change for the remaining frames.

If the length of the array argument is greater than the duration property of the Motion object, addPropertyArray() adjusts the value of the duration property accordingly. It does not add keyframes for the properties that were previously added. The newly added keyframes persist for the extra frames of the animation.

The x and y properties of the Motion object describe the changing position of the tweened object as the animation is running. These coordinates are the values that are most likely to change in every keyframe, if the position of the display object changes. You can add additional motion properties with the addPropertyArray() method. For example, add the scaleX and scaleY values if the tweened object is resized. Add the scewX and skewY values if it is skewed. Add the rotationConcat property if it rotates.

Use the addPropertyArray() method to define the following tween properties:

The properties that are added in the automatically generated script depend on the properties that were assigned to the motion tween in Flash. You can add, remove, or modify some of these properties when customizing your own version of the script.

The following code assigns values to the properties of a motion tween named __motion_Wheel. In this case, the tweened display object does not change location but rather spins in place throughout the 29 frames in the motion tween. The multiple values assigned to the rotationConcat array define the rotation. The other property values of this motion tween do not change.

__motion_Wheel = new Motion(); 
__motion_Wheel.duration = 29; 
__motion_Wheel.addPropertyArray("x", [0]); 
__motion_Wheel.addPropertyArray("y", [0]); 
__motion_Wheel.addPropertyArray("scaleX", [1.00]); 
__motion_Wheel.addPropertyArray("scaleY", [1.00]); 
__motion_Wheel.addPropertyArray("skewX", [0]); 
__motion_Wheel.addPropertyArray("skewY", [0]); 
__motion_Wheel.addPropertyArray("rotationConcat", 
    [ 
        0,-13.2143,-26.4285,-39.6428,-52.8571,-66.0714,-79.2857,-92.4999,-105.714, 
        -118.929,-132.143,-145.357,-158.571,-171.786,-185,-198.214,-211.429,-224.643, 
        -237.857,-251.071,-264.286,-277.5,-290.714,-303.929,-317.143,-330.357, 
        -343.571,-356.786,-370 
    ] 
); 
__motion_Wheel.addPropertyArray("blendMode", ["normal"]); 

In the next example, the display object named Leaf_1 moves across the stage. Its x and y property arrays contain different values for each of the 100 frames of the animation. In addition, the object rotates on its z axis as it moves across the stage. The multiple items in the rotationZ property array determine the rotation.

__motion_Leaf_1 = new MotionBase(); 
__motion_Leaf_1.duration = 100; 
__motion_Symbol1_4.addPropertyArray("y", 
    [     
        0,5.91999,11.84,17.76,23.68,29.6,35.52,41.44,47.36,53.28,59.2,65.12,71.04, 
        76.96,82.88,88.8,94.72,100.64,106.56,112.48,118.4,124.32,130.24,136.16,142.08, 
        148,150.455,152.909,155.364,157.818,160.273,162.727,165.182,167.636,170.091, 
        172.545,175,177.455,179.909,182.364,184.818,187.273,189.727,192.182,194.636, 
        197.091,199.545,202,207.433,212.865,218.298,223.73,229.163,234.596,240.028, 
        245.461,250.893,256.326,261.759,267.191,272.624,278.057,283.489, 
        288.922,294.354,299.787,305.22,310.652,316.085,321.517,326.95,330.475,334, 
        337.525,341.05,344.575,348.1,351.625,355.15,358.675,362.2,365.725,369.25, 
        372.775,376.3,379.825,383.35,386.875,390.4,393.925,397.45,400.975,404.5, 
        407.5,410.5,413.5,416.5,419.5,422.5,425.5 
    ] 
); 
__motion_Symbol1_4.addPropertyArray("scaleX", [1.00]); 
__motion_Symbol1_4.addPropertyArray("scaleY", [1.00]); 
__motion_Symbol1_4.addPropertyArray("skewX", [0]); 
__motion_Symbol1_4.addPropertyArray("skewY", [0]); 
__motion_Symbol1_4.addPropertyArray("z", 
    [ 
        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 
        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 
        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 
    ] 
); 
__motion_Symbol1_4.addPropertyArray("rotationX", [64.0361]); 
__motion_Symbol1_4.addPropertyArray("rotationY", [41.9578]); 
__motion_Symbol1_4.addPropertyArray("rotationZ", 
    [ 
        -18.0336,-17.5536,-17.0736,-16.5936,-16.1136,-15.6336,-15.1536,-14.6736, 
        -14.1936,-13.7136,-13.2336,-12.7536,-12.2736,-11.7936,-11.3136,-10.8336, 
        -10.3536,-9.8736,-9.3936,-8.9136,-8.4336,-7.9536,-7.4736,-6.9936,-6.5136, 
        -6.0336,-7.21542,-8.39723,-9.57905,-10.7609,-11.9427,-13.1245,-14.3063, 
        -15.4881,-16.67,-17.8518,-19.0336,-20.2154,-21.3972,-22.5791,-23.7609, 
        -24.9427,-26.1245,-27.3063,-28.4881,-29.67,-30.8518,-32.0336,-31.0771, 
        -30.1206,-29.164,-28.2075,-27.251,-26.2945,-25.338,-24.3814,-23.4249, 
        -22.4684,-21.5119,-20.5553,-19.5988,-18.6423,-17.6858,-16.7293,-15.7727 
        -14.8162,-13.8597,-12.9032,-11.9466,-10.9901,-10.0336,-10.9427,-11.8518, 
        -12.7609,-13.67,-14.5791,-15.4881,-16.3972,-17.3063,-18.2154,-19.1245, 
        -20.0336,-20.9427,-21.8518,-22.7609,-23.67,-24.5791,-25.4881,-26.3972, 
        -27.3063,-28.2154,-29.1245,-30.0336,-28.3193,-26.605,-24.8907,-23.1765, 
        -21.4622,-19.7479,-18.0336 
    ] 
); 
__motion_Symbol1_4.addPropertyArray("blendMode", ["normal"]);