Layer structure after creating the flower elements.

Animate the Leaves

To name and apply animation to the leaves, copy and paste the following into a new script in Script Editor.

    tell application "Adobe InDesign CC 2014"
        set docRef to document 1
        set spreadRef to spread 1 of docRef
        set dTime to 2 --duration
        set doEase to no ease
        --for Leaves
        set tOffsets to {0.5, 1.0} --transform offset center bottom
        set scaleX to {{0, 100}, {47, 200}}
        set scaleY to {{0, 100}, {47, 200}}
        set opacArray to {{0, 0}, {47, 100}}
        tell docRef
            set leafElement to group 1 of layer "Leaves" 
            set name of leafElement to "Leaf1"
            my growAnimate(leafElement, dTime, tOffsets, opacArray, scaleX, scaleY, doEase)
        end tell
    end tell
    --========
    --HANDLERS
    --========
    on growAnimate(objRef, dTime, tOffsets, opacArray, scaleX, scaleY, doEase)
        tell application "Adobe InDesign CC 2014"
            tell animation settings of objRef
                set duration to dTime
                set design option to from current appearance
                set hidden after to false
                set initially hidden to true
                set opacity array to opacArray
                set plays loop to false
                set scale x array to scaleX
                set scale y array to scaleY
                set transform offsets to tOffsets
                set ease type to doEase
            end tell
        end tell
    end growAnimate

Notice that this animation applies to a page item that is already on the page, but not visible when the page is first opened. The script will have the leaves grow from their present size to 200% within a period of 2 seconds (duration). At the same time, the leaves will fade in from 0 to 100%. The growAnimate handler uses the from current appearance design option.

Run the script with the document open. Preview the animation in InDesign’s EPUB Interactivity Panel. Unless a previous script was run that sets the timing list for the current spread to on page click, the animation should begin when you push the Run button. Otherwise you will need to click on the page to start the animation.

Flower and Stem Group

Because we want the flower blossom and the stem to animate together, make sure the blossom and stem are grouped. The animation will use the growAnimate handler introduced above. Only a few parameters need to be changed for the growAnimate handler, but it does require a list of lists of lists to indicate the motion path animation property. Add the following to the bottom of the tell docRef block in the top portion of the script above.

    --for Blossom and Stem group
    set groupRef to group 1 of layer "Flowers"
    set name of groupRef to "Group1"
    set flowerElement to group 1 of group "Group1" --note this will change depending on the page item used
    set name of flowerElement to "Flower1"
    set stemElement to rectangle 1 of group "Group1"
    set name of stemElement to "Stem1"
    set scaleX to {{0, 100}, {47, 110}}
    set scaleY to {{0, 100}, {47, 100}}
    set tOffsets to {0.5, 0.5} --transform offset center
    set mPath to {{0, {{0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}}}, {47, {{1.0, -233.0}, {1.0, -233.0}, {1.0, -233.0}}}}
    my growPath(groupRef, dTime, tOffsets, opacArray, mPath, scaleX, scaleY, doEase)

Important: If the blossom portion of the flower is not a group, you will need to change its reference in the code above.

Be sure to add the growPath handler at the bottom of your script. Run the script to test. When you preview the animation, the flower and stem should “grow” upward, but the flower does not change size.  

If the script does not work, make sure the flower blossom and stem are grouped. Open the Layers panel and verify that the structure looks similar to the screen capture below: