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Lesson 6. Working with Particles > Creating a Complex Particle System

Creating a Complex Particle System

Let's rebuild the particle system that you just analyzed. First, you'll create the particles. Then you'll modify the particle emitter shape and color mode. The next step is to add behaviors to the particle cell, starting with the Scale Over Life behavior and ending with the Random Motion and Gravity behaviors.

1.
On the Layers tab, select the Maple Leaf Yellow object.

It's okay if the object is turned off. An object does not need to be active for you to create a particle emitter from it.

2.
Press E to create a particle emitter from the selected object.

The frame fills with leaves, all looking exactly alike. Let's set the Birth Rate to 0 and the Initial Number to 100.

3.
On the Emitter tab in the Inspector, drag the Birth Rate slider to the left until the value is 0.00.

All of the leaves disappear from the Canvas.

4.
Type 100 in the Initial Number value field and press Return.

A ball of 100 leaves appears in the frame.

5.
Drag the Life slider all the way to the right to set the Life value to the full duration of the project, 10.00 (10 seconds).

Next, you'll need to set the speed to 0 so the leaves won't move away from each other. Then you'll change the emitter shape to the rectangle image.

6.
On the Emitter tab in the Inspector, drag the Speed slider to the left to set the value to 0.

7.
At the top of the Emitter tab, open the Emitter Shape pop-up menu and choose Image.

8.
Drag the Rectangle object from the Layers tab to the Emitter tab and drop it in the Image Source well for the Emitter Shape parameter.

The leaf particles now spread out across the entire rectangular frame.

9.
Press Cmd-S to save your progress.


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