coin-canvas-lib

coin-canvas-lib: Coin Canvas Javascript Library

This library encapsulates interaction with the coin canvas server. The CoinCanvasClient class includes access to all of the underlying APIs.

The library can be built with npm run build. Output files are placed into dist and the package can be imported normally after it has been built.

Canvas data can be handled with the onFullCanvas and onUpdatedPixels callbacks. The Canvas class provides access to an ImageData object that can be used to create the initial canvas. PixelColour objects provide information to update these pixels with Colour objects where CSS colour strings can be obtained via cssStr().

CoinCanvasClient objects require a PixelAddrGenerator object which can be provided using the P2putPixelAddrGenerator subclass. This expects 5 P2PUT prefix bytes. To provide the "canvas" prefix [0xc7, 0x66, 0xce, 0xc1, 0xef] can be used.

Usage examples can be seen in the tests under the tests/ directory.