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https://github.com/madbence/node-drawille-canvas
https://github.com/madbence/node-drawille-canvas
Last synced: 6 days ago
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- Host: GitHub
- URL: https://github.com/madbence/node-drawille-canvas
- Owner: madbence
- Created: 2014-06-15T21:52:07.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2022-12-07T06:54:07.000Z (about 2 years ago)
- Last Synced: 2024-11-28T17:47:38.611Z (15 days ago)
- Language: JavaScript
- Size: 309 KB
- Stars: 380
- Watchers: 13
- Forks: 18
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
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README
# drawille-canvas
HTML5 Canvas API for [`drawille`](https://github.com/madbence/node-drawille).
## Install
```
$ npm install drawille-canvas
```
In node `v0.10` it's a bit slow, with node `v0.11` it runs very smoothly.
## Usage
See [example](example.js), check out in the console (`node example`) or in the [browser](http://madbence.github.io/node-drawille-canvas/) (`example.html`).
## API
### new Canvas(width, height)
Create a new `Canvas` with the given dimensions.
For method details, see [`CanvasRenderingContext2D` on MDN](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D)
### c.fillRect(x, y, w, h)
Fill the given area of the canvas.
### c.clearRect(x, y, w, h)
Clear the given area of the canvas.
### c.save()
Save the current transformation matrix on the stack.
### c.restore()
Restore the last transformation matrix.
### c.translate(x, y)
Translate the current transformation matrix.
### c.rotate(a)
Rotate the current transformation matrix with the given angles.
### c.scale(x, y)
Scale the current transformation matrix.
### c.beginPath()
Start a new path.
### c.closePath()
Close the current path.
### c.moveTo(x, y)
Move the starting point of the next segment to the given coordinates.
### c.lineTo(x, y)
Connect the starting point with the given point with a straight line.
### c.arc(x, y, radius, start_angle, end_angle, anticlockwise)
Draw an arc between two angles at centre x, y.
### c.stroke()
Stroke the current path.
### c.fill()
Fill the current path.
### c.getContext('2d')
Return canvas itself, for compliance with browser.
### c.width, c.height
Canvas dimensions.
### c.toString()
Return the current content of canvas as a string with braille characters.
### c.getImageData(sx, sy, sw, sh)
Return an ImageData object `{ width, height, data }`, representing the underlying canvas data for the area of the canvas denoted by the rectangle which starts at `sx`, `sy` and has an `sw` width and `sh` height. `data` property is a string with braille characters.
### c.putImageData(imagedata, dx, dy [, dirtyX, dirtyY, dirtyWidth, dirtyHeight])
Paint data from the given _imagedata_ object `{ width, height, data }` onto the canvas. If a dirty rectangle is provided, only the area from that rectangle is painted.
## License
MIT