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95 lines
6.8 KiB
Markdown
95 lines
6.8 KiB
Markdown
# waterpipe.js - smoky backgrounds generator (HTML5 Canvas)
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waterpipe.js is a jQuery plugin for smoky backgrounds developed by [dragdropsite.com](http://www.dragdropsite.com)
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## Examples
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Here are some examples generated using waterpipe.js plugin.
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## Usage
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**1. Include jQuery and waterpipe.js**
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<script src="lib/jquery-1.11.0.min.js"></script>
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<script src="waterpipe.js"></script>
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**2. Create wrapper with canvas element inside**
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<div id="wavybg-wrapper" style="width: 100%; height: 100%;">
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<canvas>Your browser does not support HTML5 canvas.</canvas>
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</div>
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**3. Initialize with**
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var smokyBG = $('#wavybg-wrapper').waterpipe({
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//Default values
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gradientStart: '#000000',
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gradientEnd: '#222222',
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smokeOpacity: 0.1,
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numCircles: 1,
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maxMaxRad: 'auto',
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minMaxRad: 'auto',
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minRadFactor: 0,
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iterations: 8,
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drawsPerFrame: 10,
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lineWidth: 2,
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speed: 1,
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bgColorInner: "#ffffff",
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bgColorOuter: "#666666"
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});
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## Options
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| Option | Type | Default | Description |
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|---------------|---------------|-----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| gradientStart | string | '#000000' | Gradient start color in hex format. |
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| gradientEnd | string | '#222222' | Gradient end color in hex format. |
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| smokeOpacity | number | 0.1 | Smoke opacity 0 to 1. |
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| numCircles | int | 1 | Number of circles (smokes). |
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| maxMaxRad | int or 'auto' | 'auto' | Could be used to change circle radius size |
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| minMaxRad | int or 'auto' | 'auto' | Could be used to change circle radius size |
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| minRadFactor | int | 0 | It's a factor representing the size of the smallest radius with respect to the largest possible. Integer from 0 to 1. |
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| iterations | int | 8 | The number of subdividing steps to take when creating a single fractal curve. Can use more, but anything over 10 (thus 1024 points) is overkill for a moderately sized canvas. |
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| drawsPerFrame | int | 10 | Number of curves to draw on every tick of the timer |
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| lineWidth | number | 2 | Line width |
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| speed | int | 1 | Drawing speed (tick of timer in ms) |
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| bgColorInner | string | '#ffffff' | Background outer color in hex format |
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| bgColorOuter | string | '#666666' | Background inner color in hex format |
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## Methods
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The following code could be used to call a method: `smokyBG.data('waterpipe').generate();`Please make sure variable smokyBG exists
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| Method | Arguments | Description |
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|-----------|-------------|-------------------------------------------------------------------------------------------------|
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| generate | | Generates background canvas |
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| setOption | optionName, | Set a new value to an option. Please check the above table for possible option names and values |
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| | optionValue | |
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| download | width: int, | Download size in pixels |
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| | height: int | |
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## Demo
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Please check the demo to generate and download your own smoky backgrounds: [http://dragdropsite.github.io/waterpipe.js](http://dragdropsite.github.io/waterpipe.js)
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## Credits
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[rectangleworld.com](http://rectangleworld.com/blog/) - big part of code has been taken from the examples provided on this blog
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## License
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Licensed under MIT license |