penciljs

pencil

draw something really simple with canvas

<canvas id="demo"></canvas>
<script>
pencil = new Pencil(document.getElementById('demo'))

polygon = new Pencil.RegularPolygon(100,50,50,3).by(pencil).setContext({fillStyle:'red'});

rect = new Pencil.Rectangle(100,100,50,50).by(pencil).setContext({fillStyle:'yellow'});

circle = new Pencil.Circle(50,50,20).by(pencil).setContext({fillStyle:'blue'});
circle.on('click',function(){
  circle.setContext({fillStyle:'dark'})
})

pencil.draw()
</script>