sharkdp/pastel

Add "pastel set luminance"

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#89 opened on Sep 2, 2019

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enhancementgood first issue

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Description

This is not as straightforward to implement like the rest of the properties. The way this should be implemented is probably by (only) adjusting the Lightness channel in Lab space until the luminance has the right value.

If there is no direct way to compute the correct L value, we could also perform a (binary) search in L space until we have the right luminance value.

Contributor guide

Research direction
Implement a 'pastel set luminance' command that adjusts the L channel in CIE Lab color space to achieve the desired luminance. If direct computation is not possible, use binary search over L values to find the correct luminance.
Tech stack
rust
Domain
cli
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40