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Reversing startColor/endColor does not produce expected results

See original GitHub issue

If I use <ReactSpeedometer startColor="#FF471A" endColor="#33CC33" /> I would expect reversing the startColor and endColor (<ReactSpeedometer startColor="#33CC33" endColor="#FF471A" />) would produce a gauge with exactly the opposite color range. However this is not the case.

Observe the following image. The second speedometer starts a shade darker and ends a shade lighter than what I would expect.

Issue Analytics

State:
Created 5 years ago
Comments:7 (5 by maintainers)

Top GitHub Comments

1reaction

palerdotcommented, Nov 4, 2018

@TrieBr This is the behaviour of d3.interpolateHsl. To quote d3 -

Returns an HSL color space interpolator between the two colors a and b. The colors a and b need not be in HSL; they will be converted to HSL using d3.hsl.

I agree it is confusing. I will try to accomodate all the d3 interpolators - hcl, hsl, rgb etc so that users can select the interpolator of their choice, in upcoming versions.

0reactions

palerdotcommented, Jun 23, 2019

@TrieBr There is a new option available in 0.6.0 version with segmentColors option/prop, with which we can give custom segment colors. This option gives more control over segment colors. Here is a sample sandbox - https://codesandbox.io/embed/relaxed-silence-c3qkb

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