This companion object of class Color provides methods for creating new Color objects. There is also a small selection of related utility methods and constants.
For many constants of type Color that represent different preset colors, see o1.gui.colors.
This object has an alias in the top-level package o1, so it’s accessible to students simply via import o1.*.
Attributes
Members list
Value members
Concrete methods
Creates a new fully opaque Color with the given RGB components.
Creates a new fully opaque Color with the given RGB components.
Parameters
- blue
-
the amount of blue in the color; values outside the 0–255 range are clamped to fit it
- green
-
the amount of green in the color; values outside the 0–255 range are clamped to fit it
- red
-
the amount of red in the color; values outside the 0–255 range are clamped to fit it
Attributes
Creates a new Color with the given RGB components and opacity.
Creates a new Color with the given RGB components and opacity.
Parameters
- blue
-
the amount of blue in the color; values outside the 0–255 range are clamped to fit it
- green
-
the amount of green in the color; values outside the 0–255 range are clamped to fit it
- opacity
-
the color’s opacity; values outside the 0–255 range are clamped to fit it
- red
-
the amount of red in the color; values outside the 0–255 range are clamped to fit it
Attributes
Creates a new Color with RGB components (and optionally opacity) taken from the given string.
Creates a new Color with RGB components (and optionally opacity) taken from the given string.
Parameters
- colorAsHex
-
a six-character "RRGGBB" or eight-character "RRGGBBAA" hex color. The color is fully opaque unless specified. Examples: "000000" (black), "FFFFFF" (white), "FF00FF" (violet), "FF00FF80" (half-transparent violet). Lower-case inputs such as "ff00ff80" are also valid.
Attributes
- Throws
-
IllegalArgumentException
if the string is not a valid representation of a color
Creates a new Color with RGB components and opacity (A) taken from the given integer.
Creates a new Color with RGB components and opacity (A) taken from the given integer.
Parameters
- rgba
-
an integer in RGBA format. Examples:
0x000000FF(opaque black),0xFFFFFFFF(opaque white),0xFF00FFFF(opaque violet),0xFF00FF80(half-transparent violet).
Attributes
Creates a Color specified in terms of the HSI (hue—saturation—intensity) color scheme.
Creates a Color specified in terms of the HSI (hue—saturation—intensity) color scheme.
Parameters
- hue
-
the color’s hue component (“main observable color”), in degrees around the color wheel (0–360)
- intensity
-
the color’s intensity component (“brightness”); values outside the 0–255 range are clamped to fit it
- opacity
-
the color’s opacity; if unspecified, defaults to fully opaque (Color.Max)
- saturation
-
the color’s saturation component (“richness”); values outside the 0.0–1.0 range are clamped to fit it
Attributes
- Returns
-
the color (represented internally as RGB nonetheless)
Deconstructs a Color to its components and returns them as a tuple. Its presence here in the companion object enables us to write things like:
Deconstructs a Color to its components and returns them as a tuple. Its presence here in the companion object enables us to write things like:
myColor match
case Color(r, g, b, 255) => "opaque color: " + r + "," + g + "," + b
case Color(r, _, _, _) if r > 200 => "high in red"
case _ => "other color"
Parameters
- color
-
any color
Attributes
- Returns
-
a
Somethat contains a tuple with all the RGB components of the given color and its opacity