在移动VR中锻造视角(Forge view angle in mobile VR)

在移动VR中锻造视角(Forge view angle in mobile VR)

当在手机上启动VR工具并直接在前方观看时，我想让视图在屏幕中央显示整个模型。 视角应该略微倾斜，所以我可以看到整个建筑楼层。 目前它是直接向前，这使您看不到整个模型的视图。 我怎么能实现这个目标？

例如，在此Autodesk示例中，当您输入VR时，模型位于中心。

http://viewervr.herokuapp.com/

目前的代码，与我试图调整相机位置

document.getElementById("toolbar-vrTool").addEventListener("click", function () { let _navapi = viewer.navigation; let _camera = _navapi.getCamera(); let xValue = viewer.getCamera().position.x; let yValue = viewer.getCamera().position.y; let zValue = viewer.getCamera().position.z; zValue = zValue * 0.5; yValue = (zValue * 0.7071) * -1; _camera.position.set(xValue, yValue, zValue); });

目前来看

查看我想要的

When starting VR tool on mobile and watching directly ahead, I would like to have the view to show the whole model in the center of the screen. The view should be at a slight angle, so I could see the whole building floor. Currently it is directly ahead, which leaves you with a view where you cannot see the whole model. How could I achieve this?

For example, in this Autodesk example, the model is in the center when you enter VR.

http://viewervr.herokuapp.com/

Current code, with what I am trying to adjust the camera position

document.getElementById("toolbar-vrTool").addEventListener("click", function () { let _navapi = viewer.navigation; let _camera = _navapi.getCamera(); let xValue = viewer.getCamera().position.x; let yValue = viewer.getCamera().position.y; let zValue = viewer.getCamera().position.z; zValue = zValue * 0.5; yValue = (zValue * 0.7071) * -1; _camera.position.set(xValue, yValue, zValue); });

Current view

View I would like to have

最满意答案

有一个名为fitToView（）的函数可以完全按照您的意愿执行。 但是在使用之前，您需要等待几何体完全加载。 我还在下面的示例中添加了对setHomeViewFrom（）的调用，将Home位置重置为fitToView（）位置结果以供稍后导航。

oViewer.addEventListener (Autodesk.Viewing.GEOMETRY_LOADED_EVENT, onViewerGeometryLoaded) ; function onViewerGeometryLoaded () { oViewer.removeEventListener (Autodesk.Viewing.GEOMETRY_LOADED_EVENT, onViewerGeometryLoaded) ; oViewer.fitToView (true) ; setTimeout (function () { oViewer.autocam.setHomeViewFrom (oViewer.navigation.getCamera ()) ; }, 1000) ; }

There is a function named fitToView() which will do exactly what you want. But you need to wait for the geometry to be fully loaded before using it. I also added a call to setHomeViewFrom() in the example below to reset the Home position to the fitToView() position result for later navigation.

oViewer.addEventListener (Autodesk.Viewing.GEOMETRY_LOADED_EVENT, onViewerGeometryLoaded) ; function onViewerGeometryLoaded () { oViewer.removeEventListener (Autodesk.Viewing.GEOMETRY_LOADED_EVENT, onViewerGeometryLoaded) ; oViewer.fitToView (true) ; setTimeout (function () { oViewer.autocam.setHomeViewFrom (oViewer.navigation.getCamera ()) ; }, 1000) ; }