修改library里面的sketch的generate

src/component/HomePage/ExportModel.vue

@@ -543,6 +543,9 @@ export default defineComponent({
                     width: canvasWH.value.width,
                     height: canvasWH.value.height,
                     isDrawingMode: false, // 开启绘图模式
+					selectionFullyContained: true,
+					selectionKey:'ctrlKey',
+					includeDefaultValues: false,//尚未测试 精简导出JSON
                 });
 				canvasOnDrop()//开启鼠标到画布事件
 				if(!fabric.Object.prototype.controls.deleteControl){//设置元素删除