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Example code of dustinwilson/pigmentum

Informations about the package pigmentum

Pigmentum

Library for manipulating color in PHP. This is the result of my own experiments with color math. There are other color classes out there, but they either work not how I'd like or the math is incorrect.

Warning Before Using

This library is experimental. The code does not have any unit tests yet, but that work is planned. Until unit tests exist, treat this software as beta or even alpha software. Also, the public API is in flux, so if you do use this library you're forewarned of possible breaking API changes.

Requirements

Documentation

Color in Pigmentum is represented as a single color object. All color spaces are converted to and representated as XYZ D50 2° internally. Currently Pigmentum handles the following color spaces:

  1. CIEXYZ
    1. LMS
  2. CIELAB
  3. RGB
    1. HSB/V

Any color space supported in Pigmentum means that conversions to and from each color space is possible.

dW\Pigmentum\Color

Properties

dW\Pigmentum\Color::withLab

Creates a new dW\Pigmentum\Color object from L*a*b* values.

Example

dW\Pigmentum\Color::withLCHab

Creates a new dW\Pigmentum\Color object from L*C*H* (L*a*b*) values.

Example

dW\Pigmentum\Color::withRGB

Creates a new dW\Pigmentum\Color object from RGB values.

Example

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dW\Pigmentum\Color::withRGBHex

Creates a new dW\Pigmentum\Color object from an RGB hex string.

Example

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dW\Pigmentum\Color::withHSB

Creates a new dW\Pigmentum\Color object from RGB values.

Example

dW\Pigmentum\Color::withXYZ

Creates a new dW\Pigmentum\Color object from XYZ values.

Example

dW\Pigmentum\Color::toLab

Returns the L*a*b* color space for the color.

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dW\Pigmentum\Color::toRGB

Returns the RGB color space for the color.

Example

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dW\Pigmentum\Color::toXYZ

Returns the XYZ color space for the color.

Example

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dW\Pigmentum\Color::average

Averages the provided colors in the L*a*b* color space and returns a new Color object. Identical to dW\Pigmentum\Color::averageWithLab.

Example

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dW\Pigmentum\Color::averageWithLab

Averages the provided colors in the L*a*b* color space and returns a new Color object. Identical to dW\Pigmentum\Color::average.

Example

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dW\Pigmentum\Color::averageWithLCHab

Averages the provided colors in the LCH (L*a*b*) color space and returns a new Color object.

Example

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dW\Pigmentum\Color::averageWithRGB

Averages the provided colors in the RGB color space and returns a new Color object.

Example

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dW\Pigmentum\Color::averageWithHSB

Averages the provided colors in the HSB color space and returns a new Color object.

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dW\Pigmentum\Color::mix

Mixes the color with a provided color in the L*a*b* color space and returns a new Color object. Identical to dW\Pigmentum\Color::mixWithLab.

Example

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dW\Pigmentum\Color::mixWithLab

Mixes the color with a provided color in the L*a*b* color space and returns a new Color object. Identical to dW\Pigmentum\Color::mix.

Example

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dW\Pigmentum\Color::mixWithLCHab

Mixes the color with a provided color in the LCH (L*a*b*) color space and returns a new Color object.

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dW\Pigmentum\Color::mixWithRGB

Mixes the color with a provided color in the RGB color space and returns a new Color object.

Example

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dW\Pigmentum\Color::mixWithHSB

Mixes the color with a provided color in the HSB color space and returns a new Color object.

Example

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dW\Pigmentum\Color::apcaContrast

Calculate the APCA (indented for use with the future WCAG 3) contrast between a text color ($this) and a provided background color.

NOTE: This algorithm is in flux, and its results may change over time as the upstream reference algorithm is updated.

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dW\Pigmentum\Color::deltaE

Calculate the CIE2000 distance between $this and a supplied color. Identical to dW\Pigmentum\Color::distance.

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dW\Pigmentum\Color::distance

Calculate the CIE2000 distance between $this and a supplied color. The CIE2000 distance formula takes perception into account when calculating. Identical to dW\Pigmentum\Color::deltaE.

Example

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dW\Pigmentum\Color::euclideanDistance

Calculate the geometric euclidean distance between $this and a supplied color. This does not take perception into account when calculating. See dW\Pigmentum\Color::deltaE for perceptual distance.

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dW\Pigmentum\Color::wcag2Contrast

Calculate the WCAG2 contrast between $this and a provided color.

NOTE: While this is currently the standard for the Web it is not terribly accurate nor correct in its assessment. Use only if you're legally bound to do so. Even though the APCA contrast algorithm is in flux it already is much more accurate than the WCAG2 contrast ratio.

Example

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dW\Pigmentum\ColorSpace\Lab

Properties

dW\Pigmentum\ColorSpace\Lab::toLCHab

Returns the LCH (L*a*b*) color space for the color.

Example

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dW\Pigmentum\ColorSpace\RGB

Properties

dW\Pigmentum\ColorSpace\RGB::changeProfile

Converts the color's profile and returns a RGB color space using the supplied profile.

Example

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dW\Pigmentum\ColorSpace\RGB::toHex

Returns a RGB hex string for the color.

Example

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dW\Pigmentum\ColorSpace\RGB::toHSB

Returns the HSB color space for the color.

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dW\Pigmentum\ColorSpace\XYZ

Properties

dW\Pigmentum\ColorSpace\XYZ::toLMS

Returns the LMS color space for the color.

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dW\Pigmentum\ColorSpace\XYZ::chromaticAdaptation

Converts an XYZ color from one illuminant to another.

Example

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dW\Pigmentum\ColorSpace\Lab\LCHab

Properties

dW\Pigmentum\ColorSpace\RGB\HSB

Properties

dW\Pigmentum\ColorSpace\XYZ\LMS

Properties

dW\Pigmentum\Profile\RGB

This is the base abstract color profile class. All RGB color profiles must inherit from this.

dW\Pigmentum\Profile\RGB\AdobeRGB1998

dW\Pigmentum\Profile\RGB\DisplayP3

dW\Pigmentum\Profile\RGB\ProPhoto

dW\Pigmentum\Profile\RGB\Simple_sRGB

dW\Pigmentum\Profile\RGB\sRGB

All versions of pigmentum with dependencies

PHP Build Version
Package Version
Requires php Version ^8.0.2
ext-dom Version *
ext-zip Version *
ext-mbstring Version *
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