进行多点触控绘图时，如何忽略手掌? [英] How do you ignore the palm of the hand when doing multitouch drawing?

问题描述

多个多点触控绘图应用程序已实现了一些功能，可以防止用户在绘图时将手掌放在屏幕上时产生干扰.

Several multitouch drawing applications have implemented features that prevent interference when a user rests their palm on the screen while drawing.

它们如何过滤掉手掌上的触摸事件，但允许来自绘图手指或手写笔的正确输入?

How do they filter out touch events from the palm of the hand, but allow the correct input from the drawing finger or stylus?

推荐答案

忽略任何彼此靠近的多点触摸输入，仅从单个点(手指)获取数据.

Ignore any multi-touch inputs that are close to each other, only taking the data from the single point (the finger).

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