three.js正交相机:全部缩放 [英] three.js Orthographic Camera: Zoom All

问题描述

对于three.js，我是一个完全的新手，但我找不到如何使用OrthograpicCamera实施全部缩放"的方法.我一直在文档和网络上进行搜索，但只找到了PerspectiveCamera的解决方案，其中涉及更改视野.

I am a complete newbee to three.js, and I cannot find out how to implement a "zoom all" with a OrthograpicCamera. I have been searching on the documentation and on the web, and I have only found solutions for PerspectiveCamera, that involve altering the field of view.

我的目标是使场景的所有3D对象都适合屏幕，因此将它们显示得尽可能大.任何实现此目的的想法都会有所帮助.谢谢.

My goal is to achieve a fitting of all the 3D objects of a scene to the screen, so they are shown as bigger as possible. Any ideas to achieve this will be helpful. Thanks.

推荐答案

您可以计算所有对象周围的2D屏幕空间边界框，然后使用它来设置正交摄影机的高度和宽度.在此处查看如何计算: 3D对象的ThreeJS 2D边界框

You could calculate the 2D screen space bounding box around all the objects, and then use that to set the height and width of the orthographic camera. See how to calculate it here: ThreeJS 2D bounding box of 3D object

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