9.14. rgba
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class
itom.
rgba
(r, g, b, alpha=255) → creates a new color value from red, green, blue and optional alpha - Parameters
r : {uint8}
red component [0,255]
g : {uint8},
green component [0,255]
b : {uint8}
blue component [0,255]
alpha : {uint8}, optional
alpha component [0,255], default: 255 (no transparancy)
Notes
For a gray value set all colors to the same value.
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name
()
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toGray
() -> returns the gray value from the color (alpha is not considered) The returned gray value is a float value and calculated by 0.299 * r + 0.587 * g + 0.114 * b
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alpha
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b
blue
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g
green
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r
red