alpha() / Reference / Processing.org

Name

alpha()

Description

Extracts the alpha value from a color.

Examples

```
size(400,400);
noStroke();
color c = color(0, 126, 255, 102);
fill(c);
rect(60, 60, 140, 280);
float value = alpha(c);  // Sets 'value' to 102
fill(value);
rect(200, 60, 140, 280);
```

Syntax

alpha(rgb)

Parameters

rgb(int)any value of the color datatype

Return

float

Related

Creative Commons License

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