unageek / graphest

A faithful graphing calculator
MIT License
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sin(x^2+y^2)=0.5 spatial-aliasing #989

Closed Firestar-Reimu closed 7 months ago

Firestar-Reimu commented 7 months ago

in low resolution it is correct

image

in high resolution

image

this is a famous problem because of spatial-aliasing

https://www.zhihu.com/question/624348562

unageek commented 7 months ago

Here is a rendering of the graph with the maximum antialiasing setting (25x25), which almost eliminates the aliasing effect:

graph

image