Modifying audiothumbnail wave drawing

Hi! what is the preferred/elegant way of modifying the way the waveform is rendered? I’ve copied the class in the meantime to try some algorithms out and now would like to do it properly. The nested CacheWindow class is handling the drawing logic but I’m not used to C++ inheritance best practices so if someone has done this and could suggest a pattern to override the default behaviour I would appreciate it.

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