苹果圆角设计的秘密配方

If you look purely at their form, Apple’s products are all rounded rectangular slabs. Make the slab as large and thin as an open coffee-table book, and you get a Studio Display. Make it tall and hand-held, and you get an iPhone. Make it an even smaller and thicker, and you get an AirPods case.

如果你纯粹看它们的形式，Apple的产品都是圆角矩形板块。把板块做得像一本打开的咖啡桌书那么大而又薄，你就得到了一个Studio Display。把它做得高而手持，你就得到了一个iPhone。把它做得更小而更厚，你就得到了一个AirPods盒子。

The physical dimensions are dictated first by the human body. An iPhone or AirPods case must be hand-holdable by the majority of buyers. Dimensions are further dictated by components inside. A display (as far as it remains rigid and not bendable) can never get smaller than the panel.

物理尺寸首先由人体决定。iPhone或AirPods盒子必须能够被大多数买家手持。尺寸还受到内部组件的限制。显示器（只要它保持刚性而不是可弯曲的）永远不能比面板更小。

But how about the rounded corners?

但是圆角呢？

Squircles, squircles everywhere

圆角正方形无处不在

Why rounded corners?

为什么要圆角？

Rounded corners are less likely to cut a person or other object. They are also more durable. Imagine dropping an iPhone with a sharp corner. It’s more likely to suffer a sever dent or crack versus one with a rounded corner.

圆角不太可能割伤人或其他物体。它们也更耐用。想象一下掉落带有尖角的iPhone。与具有圆角的iPhone相比，它更有可能遭受严重的凹痕或裂纹。

Rounded objects are also seen more favorably. Universal Principles of Design explains the Contour Bias phenomenon:

圆形物体也更受欢迎。《设计的通用原则》解释了“轮廓偏见现象”：

“When presented with objects that posses sharp angles or pointed features, a region of the human brain involved in fear processing, the amygdala, is activated”

“当面对具有锐角或尖锐特征的物体时，涉及恐惧处理的人类大脑区域杏仁核会被激活”

It’s important to state that the round corners in Apple’s products are not circular, but instead “squircles”. Squircles are complex curves that remove the discontinuity between the straight and curved sections of a surface. Look at a curved surface that isn’t a squircle and you’ll be able to see where the straight line ends and the curve starts.

重要的是要指出，苹果产品中的圆角不是圆形的，而是“ squircles ”。 Squircles是复杂的曲线，消除了表面直线和曲线部分之间的不连续性。看看不是squircle的曲面，您将能够看到直线结束和曲线开始的地方。

Closer to the human, the rounder it is

越接近人类，越圆润

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