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Processing sketches that move objects by fixed pixels per frame run at different speeds on different displays. Compute delta time from millis() to make motion frame-rate independent.
Use Processing's PGraphics class to draw offscreen: create the buffer once, wrap drawing in beginDraw/endDraw, composite with image(), and export with pg.save().
A step‑by‑step guide to diagnose why a Processing sketch opens a window but shows only a blank background, with checks, fixes, and when to seek further help.
processing