bezier: function (points, times) {
 
 // 0、以3个控制点为例，点A,B,C,AB上设置点D,BC上设置点E,DE连线上设置点F,则最终的贝塞尔曲线是点F的坐标轨迹。
 
 // 1、计算相邻控制点间距。
 
 // 2、根据完成时间,计算每次执行时D在AB方向上移动的距离，E在BC方向上移动的距离。
 
 // 3、时间每递增100ms，则D,E在指定方向上发生位移, F在DE上的位移则可通过AD/AB = DF/DE得出。
 
 // 4、根据DE的正余弦值和DE的值计算出F的坐标。
 
 // 邻控制AB点间距
 
 var bezier_points = [];
 
 var points_D = [];
 
 var points_E = [];
 
 const DIST_AB = Math.sqrt(Math.pow(points[1]['x'] - points[0]['x'], 2) + Math.pow(points[1]['y'] - points[0]['y'], 2));
 
 // 邻控制BC点间距
 
 const DIST_BC = Math.sqrt(Math.pow(points[2]['x'] - points[1]['x'], 2) + Math.pow(points[2]['y'] - points[1]['y'], 2));
 
 // D每次在AB方向上移动的距离
 
 const EACH_MOVE_AD = DIST_AB / times;
 
 // E每次在BC方向上移动的距离 
 
 const EACH_MOVE_BE = DIST_BC / times;
 
 // 点AB的正切
 
 const TAN_AB = (points[1]['y'] - points[0]['y']) / (points[1]['x'] - points[0]['x']);
 
 // 点BC的正切
 
 const TAN_BC = (points[2]['y'] - points[1]['y']) / (points[2]['x'] - points[1]['x']);
 
 // 点AB的弧度值
 
 const RADIUS_AB = Math.atan(TAN_AB);
 
 // 点BC的弧度值
 
 const RADIUS_BC = Math.atan(TAN_BC);
 
 // 每次执行
 
 for (var i = 1; i <= times; i++) {
 
 // AD的距离
 
 var dist_AD = EACH_MOVE_AD * i;
 
 // BE的距离
 
 var dist_BE = EACH_MOVE_BE * i;
 
 // D点的坐标
 
 var point_D = {};
 
 point_D['x'] = dist_AD * Math.cos(RADIUS_AB) + points[0]['x'];
 
 point_D['y'] = dist_AD * Math.sin(RADIUS_AB) + points[0]['y'];
 
 points_D.push(point_D);
 
 // E点的坐标
 
 var point_E = {};
 
 point_E['x'] = dist_BE * Math.cos(RADIUS_BC) + points[1]['x'];
 
 point_E['y'] = dist_BE * Math.sin(RADIUS_BC) + points[1]['y'];
 
 points_E.push(point_E);
 
 // 此时线段DE的正切值
 
 var tan_DE = (point_E['y'] - point_D['y']) / (point_E['x'] - point_D['x']);
 
 // tan_DE的弧度值
 
 var radius_DE = Math.atan(tan_DE);
 
 // 地市DE的间距
 
 var dist_DE = Math.sqrt(Math.pow((point_E['x'] - point_D['x']), 2) + Math.pow((point_E['y'] - point_D['y']), 2));
 
 // 此时DF的距离
 
 var dist_DF = (dist_AD / DIST_AB) * dist_DE;
 
 // 此时DF点的坐标
 
 var point_F = {};
 
 point_F['x'] = dist_DF * Math.cos(radius_DE) + point_D['x'];
 
 point_F['y'] = dist_DF * Math.sin(radius_DE) + point_D['y'];
 
 bezier_points.push(point_F);
 
 }
 
 return {
 
 'bezier_points': bezier_points
 
 };
 
 }