hex_colour_to_lofi: Quantize hex colours into a low-bit representation

In coolbutuseless/lofi: Pack and Unpack Bits into Low Fidelity Representations

Description

Quantize a character vector of hex colours into a lofi (reduced bit) representation, and output this as a vector of integers.

Usage

hex_colour_to_lofi(cols, rgb_bits)

lofi_to_hex_colour(lofi, rgb_bits)

Arguments

cols	character vector of hex colours e.g. c('#ffaa70', '#00a0e2')
rgb_bits	3-element vector with number of bits to represent each of the 3 colour channels. Each element must be in the range [1,8]
lofi	vector of integers. Each integer contains a low-bit representation of a colour.

Details

A hex colour (e.g. '#ffaa70') is a character representation of a 24-bit colour i.e. 3 colour channels, each represented by an 8 bit number.

lofi colour is a representation of a colour using a low number of bits for each colour channel, and then packed as an integer.

See wikipedia articles:

• 8-bit colour using 3-3-2 bits for RGB

• Monochrome and RGB Palettes

• Colour Palettes

Value

Return integer vector. Each integer represents a colour.

coolbutuseless/lofi documentation built on Nov. 4, 2019, 9:13 a.m.