Filter effects

Filters are a way of adding special effects to an icon, or a group of icons (see KEEP_TOGETHER in appearance_flags), by post-processing the image. A filter object describes a specific form of image processing, like for instance a blur or a drop shadow. Filters can be added or removed at will, and can even be animated.

A filter is created by using the filter proc like so:

// halo effect
mob.filters += filter(type="drop_shadow", x=0, y=0,\
                      size=5, offset=2, color=rgb(255,255,170))

These are the filters currently supported:

• Alpha mask
• Angular blur
• Bloom
• Color matrix
• Displacement map
• Drop shadow
• Gaussian blur
• Layering (composite)
• Motion blur
• Outline
• Radial blur
• Rays
• Ripple
• Wave

See also

• appearance_flags var (atom)
• filter proc
• animate proc
• Understanding the renderer