2.0无法正常使用

[553082694]

ReferenceError: Can't find variable: _ccsg

[skaraman]

No longer works in 2.0

this.ctx = new _ccsg.GraphicsNode();
this.node._sgNode.addChild(this.ctx);

[asdMo]

let node = new cc.Node();
this.ctx = node.addComponent(cc.Graphics);
this.node.addChild(node);