hemanth / clear-canvas

Clear canvas.

clear-canvas

Clear canvas.

Installation

npm install clear-canvas --save

Usage

var clear = require('clear-canvas');

clear(ctx); // ctx is canvas 2D context.

Demo

Checkout the live demo.

clear = require('clear-canvas');

//canvas setup
var canvas  =  document.createElement('canvas');
canvas.width = '500';
canvas.height = '300';
canvas.style.outline = "1px solid black";
document.body.appendChild(canvas);

// Get the context.
var ctx = canvas.getContext('2d');

// Draw a triangle.
ctx.beginPath();
ctx.moveTo(20,20);
ctx.lineTo(200,20);
ctx.lineTo(120,120);
ctx.closePath();
ctx.stroke();

// Clear the canvas after 1000ms.
setTimeout( function() {clear(ctx, true);}.bind(this), 1000);

API

clear(ctx, saveTransform);

ctx : 2D canvas context.

saveTransform: [Optional] Defaults to true, need if you need to preverse the state.