16.20. Starburst
| 16. ロゴ効果フィルタ |

### 16.20. Starburst

#### 16.20.1. 概観

図 16.381. Example for the 「Starburst」 filter

「Starburst」 applied

This filter fills the active layer's alpha with a starburst gradient and adds a shadow.

It is derived from the 「Starburst」 script-fu (File → Create → Logos → Starburst in the image window), which creates a logo from a text.

You can use this filter to create shapes filled with the above starburst motif:

図 16.382. Starburst script and filter

The 「Starburst」 Script-Fu script

The 「Starburst」 filter

This filter uses four layers (three of them will be created by the filter):

Layers after applying the 「Starburst」 filter

- The 「Burst」 layer contains the bursting star, created by the Supernova filter.

- The active layer was named layer #2 in the example above. It has been filled with the 「Crack」 pattern, so the content of this layer doesn't matter. Only the active layer's alpha channel does.

  | 警告
  画像は常に活性レイヤーの寸法と同じ大きさに変更されます。

- The 「Shadow」 layer contains a drop shadow in the same shape but slightly extended size of the active layer's alpha channel.

- The 「Background」 layer: this is a new layer filled with the Background color.

#### 16.20.2. フィルタの呼び出し方

You can find this filter in the image window menu under Filters → Alpha to Logo → Starburst.

#### 16.20.3. オプション

図 16.383. 「Starburst」 options

Effect size (pixels * 30)

  Just ignore this option. It's nonsense. (This is actually the font size option of the Starburst Script-Fu script. You can still use it to vary the offset (size) of the lower right shadow, though: 「effect size」 * 0.03.)

Burst color

  This color will be passed to the Supernova filter as the color of the bursting star; it defaults to green. A click on the color swatch button brings up the color selector, where you can choose another color.

背景色

  This is the color used to fill the 「Background」 layer; it defaults to white. When you click on the button, you may choose any other color in the color selector dialog.

16.19. 粒子の軌跡... |  | 16.21. 星のきらめき...