Adobe 62000112DM - Acrobat 3D - PC Manuale utente

Adobe®®

Acrobat 3D

Controlling Animations

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

is 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 nished 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.

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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 le 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 le in the 3D Annotation.

A javascript le called “AnimationController.js.txt” is

provided as an attachment to this document.

Save the le 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

le.

4. Choose the Advanced Editing - Select Object Tool.

Select the 3D Annotation and resize it so there is some

blank space on the le 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.

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

5. Select the Button tool from the menu: Tools -> Forms

-> Button Tool. Add a button to the le 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();

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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);

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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: is is also attached to this document as “DocumentJavascripts.js.txt”

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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:1

Remove Float Bowl - start:1 end:2

Remove Float - start:2 end:3

Remove Top Cover screws - start:3 end:4

Remove 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. e values will end up making a list

like this “[[0,1],[1,2],[2,3],[3,4],[4,5]]”.

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

3D Annotation isn't on the rst page of your PDF. Just change the rst zero to the

page number that your 3D annotation is on (page 1 = 0, page 2 = 1, page 3 = 2, ...)

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

12. Select the Tools -> Forms - > ListBox Tool menu and create a listbox somewhere near your buttons. e

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. e rest of this

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

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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() aerward will resume

the animation right where it le o.

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 mode

loop = false: Play the animation once and then stop (default)

AnimationController.setPingPong(ping)

Turns pingpong on or o but doesn’t start playback.

Note: When ping = true, this will override the setPlayForward() function.

Note: is can be used with setLoop()

ping = true: Play the animation forward once, and then backward once

ping = false: Play the animation once in the direction specied with setPlayForward()

Adobe®Acrobat 3D Javascript Tutorial

Animation Control

Updated: 3/26/2008 I 1.5

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 speed

speed = 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 similar

smooth = 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: ere 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: ese numbers always represent time in the original animation’s reference frame. i.e. You don’t

have to change the playRange aer 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 playing

endtime:Determines the where the animation will stop playing

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