Hopalong attractor · 3d retro graphics

{"slug":"hopalong","number":"25","title":"Hopalong attractor","era":"Martin · 1986","summary":"A one-line iterator that fills a CRT. Pointer nudges a.","description":"Barry Martin's hopalong: x' = y − sign(x)·√|bx − c|, y' = a − x. Plot the orbit and a shape appears. Move the pointer to detune a. Color is additive phosphor.","apis":["Canvas 2D","ImageData","Pointer Events","requestAnimationFrame","matchMedia"],"tags":["attractor","plotter"],"hasGlsl":false,"interaction":"Move the pointer left or right to change the constant a.","url":"https://3d-retro.com/experiments/hopalong","example_url":"https://3d-retro.com/examples/hopalong.html","api_url":"https://3d-retro.com/api/v1/experiments/hopalong","html":"\n\n\n \n \n \n \n Hopalong attractor · 3d retro graphics\n \n\n\n

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