Three.js Y 坐标可以向下而不是向上吗? [英] Can Three.js Y coordinates go down instead of up?

问题描述

是否有一种简单的方法可以更改 Three.js 坐标系，以便 Y 值在屏幕向下而不是向上移动时增加?

Is there an easy way to change the Three.js coordinate system so that Y values increase as they move down the screen instead of up?

我必须编写一些同时适用于 SVG 和 Three.js 的代码.如果我不需要一直翻转 Y 坐标就好了.(而且代码已经在 SVG 中有效，所以我更愿意坚持 SVG 的递增 Y 均值向下约定.)

I have to write some code that works in both SVG and Three.js. It'd be nice if I didn't need to keep flipping the Y coordinates. (And the code already works in SVG, so I'd prefer to stick to SVG's increasing-Y-means-down convention.)

推荐答案

没有.Three.js 基于右手坐标系.如果正 y 在向下"方向，那么坐标系将是左手坐标系.

No. three.js is based on a right-handed coordinate system. If positive-y were in the 'down' direction, then the coordinate system would be a left-handed one.

你将不得不在应用层继续适应.

You are going to have to continue to adapt at the application layer.

three.js r.57

three.js r.57

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