momObj.prototype.draw = function()

{

//console.log(this.x);

this.x = lerpDistance(mx,this.x,0.9);

this.y = lerpDistance(my,this.y,0.9);

//delta angle

var deltaY = my - this.y;

var deltaX = mx - this.x;

var beta = Math.atan2(deltaY,deltaX) + Math.PI;

this.angle = lerpAngle(beta,this.angle,0.9) ;

ctx1.save();

ctx1.translate(this.x,this.y);

ctx1.rotate(this.angle);

ctx1.drawImage(this.eye,-this.eye.width*0.5,-this.eye.height*0.5);

ctx1.drawImage(this.tail,-this.tail.width*0.5+30,-this.tail.height*0.5);

ctx1.drawImage(this.body,-this.body.width*0.5,-this.body.height*0.5);

ctx1.restore();

}

注意画大鱼眼睛，身体，尾巴的坐标，因为这个时候已经用了translate换了坐标

我的也是，而且鱼和鼠标还越来越远了

beta加一个PI把角度反过来