sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
- context.fillStyle = 'white';
+ context.fillStyle = 'red';
console.log(canvas.width);
console.log(canvas.height);
context.fillRect(0, 0, canvas.width, canvas.height);