triangle-mosaic v1.1.0

Triangle mosaic

Generate colorful triangle-based SVG patterns (like this 👇) with ease.

Demo

You can try Triangle mosaic on the demo page.

Installation

To install triangle-mosaic, run:

npm install triangle-mosaic

Quick start

You can import TriangleMosaic like this:

import TriangleMosaic from 'triangle-mosaic'

TriangleMosaic is a class and it can be instantiated like this:

const myMosaic = new TriangleMosaic(options)

Then you can call the render method which returns the SVG code as a string:

const mySvgCode = myMosaic.render()

You can also change the options without losing the random-generated variance by calling the rehydrate method with the new options. This will also return the new SVG code as a string:

const myNewSvgCode = myMosaic.rehydrate(newOptions)

Options

The options parameter of both the constructor and the rehydrate method is an object with various options that influence the outcome.

If you haven’t yet, maybe it’s a good time to check out the demo page to get a good overview of the features.

Dimensions and number of tiles

For example:

const options = {
  ...,
  width:  640,
  height: 480,
  xResolution: 16,
  yResolution: 12,
  ...
}

The options xResolution and yResolution are the only options which cannot be rehydrated without losing the random-generated variance of tiles.

Variance

Variance options control how the triangles can deviate from their original shape and coloring.

The option shapeFuzz controls how far the grid points may venture from their original location.

Parameters that belong the object colorFuzz control how much the triangle colors may deviate from their original color. This can be controlled along all four axes of the HSLA color representation.

The option diagonals controls which diagonals of the squares of the grid are used:

• 'nw-se' draws the diagonals from the top left corners to the bottom right corners (North-West - South-East)
• 'ne-sw' draws the diagonals from the top right corners to the bottom left corners (North-East - South-West)
• 'alternating' draws diagonals alternating, so that no two neighboring squares have the same diagonal
• 'random' draws diagonals randomly

For example:

const options = {
  ...,
  shapeFuzz: 0.65,
  colorFuzz: {
    hue:        0.1,
    saturation: 0.1,
    lightness:  0.1,
    alpha:      0
  },
  diagonals: 'nw-se',
  ...
}

Coloring

The option coloring will decide the original color of the triangles. There are various possibilities here.

Coloring mode

The option coloring.mode will decide how the rest of the coloring object is interpreted.

The following coloring modes are supported:

• Single color (single)
• Linear gradient (linearGradient)
• Radial gradient (radialGradient)
• Color spots (spots)

Their additional options of the coloring object are detailed below for each of the coloring modes.

Single color

The single color mode only takes a color in hexadecimal color format:

const options = {
  ...,
  coloring: {
    mode:  'single',
    color: '#ffc107'
  },
  ...
}

Linear and radial gradient

The linear and radial gradient color modes require three additional options in the coloring object:

The options coloring.start and coloring.end are object that have members x and y containing the horizontal and vertical coordinates of the gradient’s starting and end points.

The coloring.stops option is an array of arrays, where the elements have two items: a location (0-1) and a color (in hexadecimal color format). The locations of the first and the last spot must always be 0 and 1, respectively.

For example:

const options = {
  ...,
  coloring: {
    mode: 'linearGradient', // or 'radialGradient'
    start: {
      x: 0,
      y: 0
    },
    end: {
      x: 1280,
      y: 720
    },
    stops: [
      [0,    '#9c27b0'],
      [0.25, '#03a9f4'],
      [0.5,  '#8bc34a'],
      [0.75, '#ffc107'],
      [1,    '#f44336']
    ]
  },
  ...
}

Spots

The coloring.spots option is an array of color spots, where the elements have four members:

• x and y containing the horizontal and vertical coordinates of the color spot

• color containing the spot’s color in hexadecimal color format

• intensity which represents how much this light spot contributes to individual triangle colors as compared to other spots (0-1)

The coloring.spotIntensity (0-1) option sets the intensity for spots that don’t have their individual intensity specified.

For example:

const options = {
  ...,
  coloring: {
    mode: 'spots',
    spotIntensity: 0.5,
    spots: [
      {
        x: 0,
        y: 0,
        color: '#ffc107',
        intensity: 0.65
      },
      {
        x: 1280,
        y: 0,
        color: '#f44336'
        // intensity falls back to 0.5
      },
      {
        x: 640,
        y: 720,
        color: '#2196f3',
        intensity: 0.6
      }
    ]
  },
  ...
}

Full example

import TriangleMosaic from 'triangle-mosaic'

let options = {
  width:  640,
  height: 480,
  xResolution: 12,
  yResolution: 8,
  shapeFuzz: 0.65,
  colorFuzz: {
    hue:        0.1,
    saturation: 0.1,
    lightness:  0.1,
    alpha:      0
  },
  diagonals: 'nw-se',
  coloring: {
    mode: 'linearGradient',
    start: {
      x: 0,
      y: 0
    },
    end: {
      x: 640,
      y: 480
    },
    stops: [
      {
        id: 0,
        location: 0,
        color: '#9c27b0'
      },
      {
        id: 1,
        location: 0.25,
        color: '#03a9f4'
      },
      {
        id: 2,
        location: 0.5,
        color: '#8bc34a'
      },
      {
        id: 3,
        location: 0.75,
        color: '#ffc107'
      },
      {
        id: 4,
        location: 1,
        color: '#f44336'
      }
    ]
  }
}

// Render SVG
const myMosaic = new TriangleMosaic(options)
const mySvgCode = myMosaic.render()

console.log(mySvgCode)

// Change options and render SVG again
options.width = 720
options.coloring.end.x = 720
options.shapeFuzz = 0.5
options.colorFuzz.hue = 0

const myNewSvgCode = myMosaic.rehydrate(options)

console.log(myNewSvgCode)

License

Triangle Mosaic is licensed under MIT.

The images you create with the library or web-based tool are yours and you may license them in any way you see fit.