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jesshuifeng

why the inside and outside tasks are hard in this case?

weitingt

dunkin' donut

acaosun

We only have an explicit equation for points on the surface, but nothing informing us whether a point is inside or outside.

jyu

Is it because of the properties of trigonometric functions that f(inf, inf) might have similar values with points inside the torus so we can't distinguish only by values?