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Controlling Animations

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Updated: 3/26/2008 I 1.5

This tutorial shows how to use the provided script to easily control the playing of an animation in a 3D Scene. See Page 12 for an example of a finished product.

With the script supplied in this tutorial, all aspects of an animation can be controlled with the javascript code. You can use Buttons, Events, or Mouse interactions to trigger the javascript code that controls the animation.

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How to create the example...1. Obtain a 3D model with an embedded animation or create

one by following the Keyframe Animation tutorial. You can create animations using the Adobe 3D Toolkit that comes with Acrobat 3D. You can also create a very simple explode animation in the next step. If you already have a 3D model in your PDF, jump to Step 3.

2. Drag a 3D model file directly into Acrobat 3D to create a 3D Annotation object in a blank PDF.

Make sure you select “Export Animation” on the “Enhance” tab of the “3D Conversion” dialog that comes up. Alternatively, to create a simple explode animation, select “Create Exploding Parts Animation”.

3. Embedd the provided javascript file in the 3D Annotation. A javascript file called “AnimationController.js.txt” is provided as an attachment to this document.

Save the file on your hard drive and rename it by removing the “.txt” at the end. Double click the created 3D Annotation to bring up the properties dialog. Click the “Edit Content” button and then click the “Browse” button next to the “Default Script” textboxt to select the script file.

4. Choose the Advanced Editing - Select Object Tool. Select the 3D Annotation and resize it so there is some blank space on the left side for buttons. Note: this will distort the preview image. Go back to the Edit Content dialog (Step 3) and select the “Retrieve Poster from default View” option and click OK.

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5. Select the Button tool from the menu: Tools -> Forms -> Button Tool. Add a button to the left of the 3D Annotation. Access it’s properties dialog by double-clicking it or by “Properties” in it’s right-click menu. Under the “Options” tab, change the label to “Play Selection”.

6. Under the “Actions” tab, add a “Run a Javascript” action. Copy the following javascript into the editor.

7. Now create another button labeled “Stop” and paste the following javascript in the same manner.

PlaySelected();

Stop();

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8. Create several more buttons with the following labels and javascript actions.

“Play All” —

“Play Next” —

“Rewind All” —

“Rewind Last” —

9. Select the Menu Advanced -> Document Processing -> Document Javascripts. Type “AnimationControl” or any similar name (it’s not important) in the “Script Name” text box and click “Add”. Delete the empty function that is created by default and paste the code on the following page into the script editor.

PlayAll();

PlayNext();

PlayAll(true);

PlaySelected(true);

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var AnimationSections = [[0,2],[2,5],[5,9]];var SectionCount = AnimationSections.length;

function Context(){ return getAnnots3D(0)[0].context3D;}

function Stop(){ Context().MyAnimation.pause();}

function GetSelectedSectionIndex(){ return getField("AnimationSections").currentValueIndices;}

function SetSelectedSectionIndex(value){ value = Math.min(SectionCount-1, value); getField("AnimationSections").currentValueIndices = value;}

function SetPlayRange(playall){ if(playall) { Context().MyAnimation.setPlayRange(AnimationSections[0][0], AnimationSections[SectionCount-1][1]); } else { var section = AnimationSections[GetSelectedSectionIndex()]; Context().MyAnimation.setPlayRange(section[0], section[1]); }}

function PlaySelected(DontPlay){ SetPlayRange(); Context().MyAnimation.reset(); if(!DontPlay) Context().MyAnimation.play();}

function PlayAll(DontPlay){ SetPlayRange(true); SetSelectedSectionIndex(0); Context().MyAnimation.reset(); if(!DontPlay) Context().MyAnimation.play();}

function PlayNext(DontPlay){ SetPlayRange(); Context().MyAnimation.reset(); if(!DontPlay) Context().MyAnimation.play(); SetSelectedSectionIndex(GetSelectedSectionIndex() + 1);}

9. (continued) Use the “Select Text” tool to copy this code.Note: This is also attached to this document as “DocumentJavascripts.js.txt”

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10. Take a minute to observe the animation in your chosen 3D Model. Open the 3D Model in the 3D Toolkit and use the animation control at the bottom of the screen to start/stop/seek the animation. Decide how you might want to break it down into individual steps or sections. Scan the animation back and forth and write down the start and end time of each “section” you have decided on.

In the provided model, we use the following sections in the disassembly animation:Remove Float Bowl Screws - start:0 end:1Remove Float Bowl - start:1 end:2Remove Float - start:2 end:3Remove Top Cover screws - start:3 end:4Remove Top Cover - start:4 end:5

11. Select the “Document Javascripts” menu from Step 9. Select the script you created and click “Edit”. Modify the AnimationSections variable declaration at the top; replace the “[[0,1],[1,2],[2,3]]” part with a similar list using the start and end times you decided on in the previous step. The values will end up making a list like this “[[0,1],[1,2],[2,3],[3,4],[4,5]]”.

The line: "return getAnnots3D(0)[0].context3D;" might need to be changed if your

3D Annotation isn't on the first page of your PDF. Just change the first zero to the page number that your 3D annotation is on (page 1 = 0, page 2 = 1, page 3 = 2, ...)

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12. Select the Tools -> Forms - > ListBox Tool menu and create a listbox somewhere near your buttons. The Properties dialog should open as soon as it’s created. Navigate to the “Options” tab and add an item for each section of the animation you decided on in step 10. Note: Make sure they are in chronological order. Navigate to the “General” tab and change the “Name” to “AnimationSections”.

13. Your PDF should now resemble Page 2 of this document (with the exception of the section titles and 3D Model) and should function in the same manner.

Try experimenting with more buttons using other functions that the script contains. The rest of this

document is a reference for the "Animation Controller.js" javascript.

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How to use the rest of the script...AnimationController.play()

Begins playing animation from the current position in the current direction.

AnimationController.pause()Freeze the animation at the current position. Calling play() afterward will resume the animation right where it left off.

AnimationController.reset()Stops the animation and resets the position to the beginning or the end (depending on the last call to setPlayForward()).

AnimationController.setPlayForward(forward)Sets the play direction but doesn’t start playback.forward = true: Play the animation in the normal forward direction (default)forward = false: Play the animation in the opposite direction

AnimationController.setLoop(loop)Sets the looping mode but doesn’t start playback.loop = true: Play the animation in looped modeloop = false: Play the animation once and then stop (default)

AnimationController.setPingPong(ping)Turns pingpong on or off but doesn’t start playback.Note: When ping = true, this will override the setPlayForward() function.Note: This can be used with setLoop()ping = true: Play the animation forward once, and then backward onceping = false: Play the animation once in the direction specified with setPlayForward()

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How to use the rest of the script...AnimationController.setPlaySpeed(speed)

Sets the speed of the animation playback relative to the default speed but doesn’t start playback.Note: To play an animation in reverse, use setPlayForward(false) instead of setPlaySpeed(-1)speed < 1: Animation is played slower than it’s default speedspeed = 1: Animation is played at it’s default speed (default)speed > 1: Animation is played faster than it’s default speed

AnimationController.setSmoothness(smooth)Sets how smoothly the animation will transition from being stopped (at the beginning) to full speed (middle) to stopped again (at the end).Note: any value 0 and above is valid, but anything above 10 is fairly similarsmooth = 0: No smoothing (linear speed)smooth = 1: Partial smoothing(half linear, half cosine wave) (default)smooth = 10: Full smoothing (animation speed follows cosine wave)

Note: There are get functions for most of the above parameters, i.e. getPlaySpeed(), getSmoothness(), getPingPong(), ...

AnimationController.setPlayRange(starttime, endtime)Sets the section of the animation to play. If your animation is 10 seconds long but you only want to play the last 4 seconds, call setPlayRange(6, 10).Note: These numbers always represent time in the original animation’s reference frame. i.e. You don’t have to change the playRange after changing playForward or playSpeed. Endtime should always be greater than Starttime, even if playForward is set to false.starttime: Determines the where the animation will start playingendtime: Determines the where the animation will stop playing

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Materials and/or Tutorial prepared by Daniel Beardsley (4/22/2006)Copyright © 2006 Adobe™ Systems Inc – no full or partial reproduction of this document is permitted without prior written permission of Adobe Systems

Animation ControlUpdated: 3/26/2008 I 1.5

You can create multiple AnimationController objects and control multiple animations with this code. Simply create one AnimationController object for each animation present in the scene. Just modify the last line of the provided script.

To access the animations by name, change the last lines to this:var MyFirstAnimation = new AnimationController(scene.animations.getByName(“First Animation’s Name”));var MySecondAnimation = new AnimationController(scene.animations.getByName(“Second Animation’s Name”));

How to control multiple Animations...

Owners ManualM250 Gas-powered Push Mower

Section 4. carburetor DiSaSSembly

you will need the following tools:1. #2 phillips screw driver2. Solvent and a soft brush3. A rag for wiping up possible residual gasoline

WarninG:* Gasoline is flammable, dispose of it properly* Always wear gloves when working with gasoline or other solvents

Click on the Step number using the hand tool

1 Carburetor Disassembly

1.1 Remove the Carburetor from the mower (Refer to Section 3.)

1.2 Clean the outside of the Carburetor with a solvent and a soft brush

2 Removing the Bowl

2.1 Remove the screws holding on the bot-tom of the carburetor (the bowl)

2.2 Remove the bowl and be careful not to get any debris inside the carburetor. Note: (residual gasoline may still be inside the carburetor and will probably spill at this point)

2.3 Gently pull out the floats and the pivot bar they are attached to.

3 Removing the Mixing Cover

3.1 Remove the screws that hold the top part of the carburetor on (The Mixing Cover).

3.2 Remove the mixing cover itself by slid-ing it vertically until the assembly is clear of the carburetor. note: aSSembly iS the reverSe of DiSaSSembly.