5.3. Blend functions¶

Normal
Darken
Multiply
Color Burn
Linear Burn
Lighten
Screen
Color Dodge
Linear Dodge

Blend functions are used to blend layers together given a certain formula.

An excellent read: http://dunnbypaul.net/blends

5.3.1. Normal ¶

fontblend.blendnormal(base, blend)[source]

R = blend

Parameters:	base – The base image blend – The blend image

5.3.2. Darken ¶

fontblend.blenddarken(base, blend)[source]

R = min( base, blend )

Parameters:	base – The base image blend – The blend image

5.3.3. Multiply ¶

fontblend.blendmultiply(base, blend)[source]

R = base * blend

Parameters:	base – The base image blend – The blend image

5.3.4. Color Burn ¶

fontblend.blendcolorburn(base, blend)[source]

R = 1 - (1 - base) / blend

Parameters:	base – The base image blend – The blend image

5.3.5. Linear Burn ¶

fontblend.blendlinearburn(base, blend)[source]

R = base + blend - 1

Parameters:	base – The base image blend – The blend image

5.3.6. Lighten ¶

fontblend.blendlighten(base, blend)[source]

R = max( base, blend )

Parameters:	base – The base image blend – The blend image

5.3.7. Screen ¶

fontblend.blendscreen(base, blend)[source]

R = 1 - (1 - base) * (1 - blend)

Parameters:	base – The base image blend – The blend image

5.3.8. Color Dodge ¶

fontblend.blendcolordodge(base, blend)[source]

R = base / (1 - blend)

Parameters:	base – The base image blend – The blend image

5.3.9. Linear Dodge ¶

fontblend.blendlineardodge(base, blend)[source]

R = base + blend

Parameters:	base – The base image blend – The blend image