Check for the given color strings whether they have transparency, i.e., an alpha channel value != fully opaque. — colors.have.transparency • fsbrain

Check for the given color strings whether they have transparency, i.e., an alpha channel value != fully opaque.

Usage

colors.have.transparency(col_strings, accept_col_names = TRUE)

Arguments

col_strings: vector of RGB(A) color strings, like c("#FFFFFF", ("#FF00FF")).
accept_col_names: logical, whether to accept color names like 'white'. Disables all sanity checks.

Value

logical vector

Examples

colors.have.transparency(c("#FFFFFF", "#FF00FF", "#FF00FF00", "red", "#FF00FFDD"));
#> [1] FALSE FALSE  TRUE FALSE  TRUE
all((colors.have.transparency(c("#FFFFFF00", "#ABABABAB"))));
#> [1] TRUE