显示网格背景

• graph#showGrid - 显示或关闭网格背景
• graph#snapToGrid - 吸附到网格线

示例

var graph = new Q.Graph('canvas');
graph.showGrid = true;
graph.snapToGrid = true;
var hello = graph.createNode("Hello", -100, -50);
var qunee = graph.createNode("Qunee", 100, 50);

显示网格背景后，画布运行如下

参考线对齐

• graph#enableGuideLine - 是否启用参考线

graph.enableGuideLine = true;

启用参考线后，移动图元或者调整图元尺寸时，会根据邻近图元边界自动对齐，运行效果如下