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-rw-r--r--libdimension/dimension/color.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libdimension/dimension/color.h b/libdimension/dimension/color.h
index c9d777b..887c2c7 100644
--- a/libdimension/dimension/color.h
+++ b/libdimension/dimension/color.h
@@ -121,6 +121,8 @@ dmnsn_CIE_Luv dmnsn_Luv_from_color(dmnsn_color color, dmnsn_CIE_XYZ white);
/* Perceptual color manipulation */
+/** Greyscale color intensity. */
+double dmnsn_color_intensity(dmnsn_color color);
/** Add two colors together. */
dmnsn_color dmnsn_color_add(dmnsn_color color1, dmnsn_color color2);
/** Multiply a color's intensity by \p n. */