如何使用Forge Viewer鲷鱼? [英] How to use Forge Viewer Snapper?

问题描述

我正在尝试使用Forge Viewer中的快照程序功能，以要求用户选择一个点，然后检索所选点的点世界坐标.

I'm trying to use Snapper functionnalities from Forge Viewer in order to ask user to pick a point and then retrieve point world coordinates of selected point.

我正在查看此主题，但不适用于我:如何激活Autodesk锻造鲷鱼?

I look at this topic but doesn't work for me : How to activate Autodesk Forge Snapper?

我像这样加载扩展名: this.viewer.loadExtension('Autodesk.Snapping');

I load the extension like that : this.viewer.loadExtension('Autodesk.Snapping');

然后尝试像这样使用快照程序:

And then try to use the Snapper like that:

               console.log(this._viewer.toolController.getActiveToolName());
               var snapper = new Autodesk.Viewing.Extensions.Snapping.Snapper(this._viewer, {});

               this._viewer.toolController.registerTool(snapper);
               this._viewer.toolController.activateTool('snapper');

               console.log(this._viewer.toolController.getToolNames());
               console.log(this._viewer.toolController.getActiveToolName());

               var a = snapper.getSnapResult();
               console.log(a);

在日志中，快照程序已激活，但是我可以在查看器中选择一个点，以使用getSnapResult函数获取结果.

In the log the snapper is activated but i am enable to pick a point in viewer ann to get results with getSnapResult function.

提前谢谢

推荐答案

Snapper工具适用于2d和3d模型，您将需要提供通过(例如)测试为阳性的匹配测试结果.在画布上单击，然后说:

The snapper tool works with both 2d and 3d models and you will need to provide a hit test result that is tested positive by e.g. a click on the canvas, so say:

const snapper = new Autodesk.Viewing.Extensions.Snapping.Snapper(NOP_VIEWER)
const hitTestResult = NOP_VIEWER.impl.snappingHitTest(clickEvent.x, clickEvent.y)
snapper.snapping3D(hitTestResult)
snapper.getSnapResult()

您可以使用自定义工具订阅画布点击事件-有关详细信息，请参见此处.

You may subscribe to canvas click events with your custom tool - see here for details.

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