Hydra processes a webcam by initialising it into s0 and using it inside src()

Hydra can process external video such as a webcam, not only internally generated sources. The camera is activated into an external-source variable (s0.initCam()), which lights the webcam, but nothing shows until you reference it inside a sketch with src(s0). From there every Hydra transform — geometry, color, blend, modulate — works on the live video exactly as it does on osc() or shape(), so the camera becomes a live source you can warp and composite. Multiple cameras are selected with a number, e.g. s0.initCam(1).

Examples

s0.initCam(); src(s0).out() — raw webcam. src(s0).modulateRotate(osc(5)).out() — webcam warped by an oscillator. src(s0).blend(osc()).out().

Assessment

Write a sketch that takes webcam input and applies two transformations, and explain what src() does differently from osc() when it sits in the source position.