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Color

Utility for working with colors.

Get the luminosity of a color and determine the optimal (black or white) foreground color.

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v2

Added:
equals(color a, color b) function that deals with na values.

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v3

Added:
tostringRGBT(color)
Converts a color value to a string in the "rgbt(r,g,b,t)" format.
Parameters:
color: The color to convert.
Returns: The color value as a string.

toHexChar(n)
Converts an integer between 0 and 15 to its hex equivalent character.
Parameters:
n: The integer value to convert.

byteToHex(n)
Converts an integer from 0 to 255 to a 2-character hex string.
Parameters:
n: The integer value to convert.

toHex(color)
Converts a color to its hex string (#FFFFFF).
Parameters:
color
Returns: The six digit hex string.

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v4

Updated:
getContrastColor(bgColor, keepNa)
Returns a color that is either black or white depending on the luminosity of the given background color. If the background color is na, returns gray.
Parameters:
bgColor: The background color to determine the contrast color for.
keepNa: When true and the value of bgColor is na the return value will be na; otherwise the if bgColor is na the return will be gray.
Returns: A color that provides high contrast with the given background color.

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v6

Added:
brighten(c, value)
Proportionally adjusts the RGB values of a color. A value of positive (+) 100 will result in white. A value of negative (-) 100 will result in black.
Parameters:
c: The color to adjust.
value: The amount (-100 to +100) to adjust the color by. Values less than -100 or greater than +100 will be clamped.
Returns: The resultant color.

darken(c, value)
Proportionally adjusts the RGB values of a color. A value of positive (+) 100 will result in black. A value of negative (-) 100 will result in white.
Parameters:
c: The color to adjust.
value: The amount (-100 to +100) to adjust the color by. Values less than -100 or greater than +100 will be clamped.
Returns: The resultant color.

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v7 Fixes to brighten

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v8 Fixes to brighten

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v9 Added extension syntax.

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v10 Upgraded to v6. Added "blending" functions/methods

Added:
lerp(color1, color2, t)
Linear interpolation between two colors.
Parameters:
color1 (color): The first color.
color2 (color): The second color.
t (float): The interpolation factor (0.0 = color1, 1.0 = color2).
Returns: The interpolated color.

method blendWith(this, toColor, t)
Blends this color with another color using linear interpolation.
Namespace types: series color, simple color, input color, const color
Parameters:
this (color): The starting color.
toColor (color): The target color to blend with.
t (float): The blend factor (0.0 = this, 1.0 = toColor).
Returns: The blended color.

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