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Diffstat (limited to '')
-rwxr-xr-x | share/extensions/color_grayscale.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/share/extensions/color_grayscale.py b/share/extensions/color_grayscale.py new file mode 100755 index 0000000..5d134aa --- /dev/null +++ b/share/extensions/color_grayscale.py @@ -0,0 +1,18 @@ +#!/usr/bin/env python +"""Convert to grey""" + +import inkex + + +class Grayscale(inkex.ColorExtension): + """Make all colours grayscale""" + + def modify_color(self, name, color): + # ITU-R Recommendation BT.709 (NTSC and PAL) + # l = 0.2125 * r + 0.7154 * g + 0.0721 * b + lum = 0.299 * color.red + 0.587 * color.green + 0.114 * color.blue + return inkex.Color((int(round(lum)), int(round(lum)), int(round(lum)))) + + +if __name__ == "__main__": + Grayscale().run() |