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This
tutorial will teach you how to create a sparkling effect or twinkling
star effect in Flash MX. This tutorial is for people who are
comfortable with movie clips using Flash MX. You can try the Sparkling
Effect on a diamond ring or on text also.

Please note:

1. You need to have Flash
Player 7.0 installed to view the Flash animation.

2. Flash MX 2004 or higher must be installed on your system to open the .fla file.

STEPS TO FOLLOW

Import the Background Image

Open a new file. Go to File >New. Select Flash Document. Click OK.

Go to Modify > Document
to give a file size of 180px by 400px. This is the same size as the
Bitmap picture we have. Select the Bitmap pictures which you want to
put as background and bring it to the Flash Library by clicking on Select File > Import to Library from the Menu Bar. Go to Window > Library,
You can see the picture in the Library panel. Drag the picture named
Bitmap to the Stage. Select the picture by clicking on it. This will be
your first layer, name it background.

Now you have to create 7 movie clips. You have to have basic knowledge
in FLASH MX to do this. As you know movie clips work independently, and
you can use them whenever required.
Create a Rotating Star Movie Clip

Create a new layer. Name it sparkle.

Go to Insert > New Symbol.
The 'Create New symbol' screen will appear. Name this movie clip '
star_mc'. Click OK. You will be directed inside the movie clip. Now
select the PolyStar Tool. To select the Polystar tool , first go to the Rectangle tool and select it in the drop down menu as seen below.

Go to the Properties window. Go to Options. A screen called Tool Settings will appear.

Enter these values and click OK:

Style: Star

Number of sides: 4.

Star Point Size: 0.10.

Now draw the Star (without a stroke color). Make the star into a movie
clip entitled star_mc. Now double click on it. On frame 1 you will see
your star. Go to Properties>Tween. Select Motion from the drop down
Menu. Name it as star_in_mc. Go to frame 10. Press F6 to insert a new
keyframe. Select the star and go to Modify > Transform > Rotate CW.
Repeat Modify>Transform>Rotate CW thrice. Your rotating Star
movie Clip is ready. You will see it in the Library Window also. This
movie clip star_mc will not be there in the sparkle layer but stored in
the Library, we will use it later.
Create a movie clip with a small opaque circle that increases in size and becomes almost transparent.

Draw a circle with Oval Tool, choose the fill color as white and make
it 2px by 2px. Select it. Go to Modify>Convert to Symbol from the
Menu Bar. A dialog Box named Create New Symbol will appear. Give the
name as shade_mc. Select Movie Clip. Click on OK. double click on it.
You will be inside the Movie clip and in your first frame you will see
the dot. Select it. Go to Modify>Convert to Symbol from the Menu
Bar. A dialog Box named Create New Symbol will appear. Give the name as
shade_in_mc. Go to Frame5. Press F6 to insert keyframe. Go to
Properties>Tween. Select Motion from the drop down Menu. Go to Frame
10. Press F6 to insert keyframe. Now go to Frame 5. Select your movie
clip. Increase the size to 14.3px by 14.3px. Go to Frame 1. Select the
dot. Go to Properties. Select Color as Alpha in the drop down menu and
give 100%. Go to Frame 5. Select the dot. Go to Properties. Select
Color as Alpha in the drop down menu and give 10%. Go to Frame 10.
Select the dot. Go to Properties. Select Color as Alpha in the drop
down menu and give 5%. This movie clip shade_mc will not be there in
the sparkle layer but stored in the Library, we will use it later.
Create another movie clip with a star which becomes smaller at a slower rate than our 1st star movie clip.

Go to Main Scene. Go to Insert > New Symbol. The Create New symbol
screen will appear. We will name your first movie clip as star_mc. You
will be directed inside the movie clip. Now go to PolyStar Tool. To go
to polystar tool , first go to rectangle tool and select it in the drop
down menu. Go to Properties window. Go to Options. A screen called Tool
Settings will appear. Select Style, in the drop down menu as Star.
Select Number of sides 4. Select Star Point Size as 0.10. Click on OK.
Give color as white.

Now draw the Star. Give the size to 23px by 23px. Select the edge and
delete them. Choose the star and make it a Movie Clip. Name it
star_s_mc. Now double click on it. On frame 1 you will see your star.
Go to frame 10. Press F6 to insert a new keyframe. Go to
Properties>Tween. Select Motion from the drop down Menu. Go to
Frame20. Press F6 to insert keyframe. Go to Properties>Tween. Select
Motion from the drop down Menu. Now go to frame 10. Select your movie
clip. Go to Properties. Give the size to 9px by 9px. This movie clip
star_s_mc will not be there in the sparkle layer but stored in the
Library, we will use it later.
Create the sparkle movie clip by combining the movie clips created above and place it where required.

You have already created 6 movie clips. Now we will create the last
main movie clip. Go to Insert>New Symbol. The Create New symbol
screen will appear. We will name your main movie clip as sparkle_mc.
You will be directed inside the movie clip. Drag in here these 3 movie
clips : star_mc, shade_mc , star_s_mc because when they are combined
they will give the sparkle effect, and adjust them properly in the
middle. Now go to your main scene. Go to layer sparkle. Drag the Main
movie Clip sparkle_mc wherever you want the Sparkling Glass Effect to
be seen. You can use it on a diamond ring, a golden jewelry or on
sparkling text also.
Save
your file as sparkle.fla. Press on Ctrl+Enter to see the Sparkling
Glass Effect. This will create automatically sparkle.swf file.