Use UserDefaults or @AppStorage
weiha
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Maybe you need to save the key data of color and angle, and then read and instantiate it from userdefalts when necessary, such as double of angle.
It's very bad. I found that if the data read by geometryreader is captured by a func but not used, this problem will occur. Memory occupies 30G quickly, and the hard disk reads and writes a lot. Even if Xcode is turned off, it still doesn't help. You must to click to turn off by yourself！
The width ratio of iPad is 4:3, so you must set such a ratio, such as 600:450, and if you don't, there will be something wrong with the display.