win_magnification.effects

MaxBQb

Aug 11, 2023

Color effects (color transformation matrices)

Inspired by:

• windows color filters

• negative screen color matrices

• css filters

More about color transformations

Author: MaxBQb

inversion(value=1.0) → types.ColorMatrix

Invert colors (black -> white, white -> black)

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color inversion effect matrix

grayscale(value=1.0) → types.ColorMatrix

All colors become shades of gray

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color grayscale effect matrix

sepia(value=1.0) → types.ColorMatrix

All colors become shades of brown

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color sepia effect matrix

contrast(value=1.0) → types.ColorMatrix

Make colors more bright and contrast

Uses get_transition()

Example:

>>> tools.print_matrix(contrast())
1.2  0.0  0.0  0.0 -0.2
0.0  1.2  0.0  0.0 -0.2
0.0  0.0  1.2  0.0 -0.2
0.0  0.0  0.0  1.0  0.0
0.0  0.0  0.0  0.0  1.0

Parameters

value – Power of effect applied

Returns

Color sepia effect matrix

binary(value=1) → types.ColorMatrix

Only white and black colors stay

Uses get_transition()

Example:

>>> tools.print_matrix(binary())
 127.0  127.0  127.0  0.0  0.0
 127.0  127.0  127.0  0.0  0.0
 127.0  127.0  127.0  0.0  0.0
 0.0    0.0    0.0    1.0  0.0
-180.0 -180.0 -180.0  0.0  1.0

Parameters

value – Power of effect applied, normally uses -1, 0, 1, on low values (like 0.001) act like get_transition() value

Returns

Color binary effect matrix

blindness_deuteranopia(value=1.0) → types.ColorMatrix

Simulates color blindness: Deuteranomaly (green-weak)

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color effect matrix adjusted for deuteranopia

blindness_protanopia(value=1.0) → types.ColorMatrix

Simulates color blindness: Protanomaly (red-weak)

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color effect matrix adjusted for protanopia

blindness_tritanopia(value=1.0) → types.ColorMatrix

Simulates color blindness: Tritanomaly (blue-yellow weak)

Uses get_transition()

Parameters

value – Power of effect applied

Returns

Color effect matrix adjusted for tritanopia