Early works  (1985-1991)     Very early graphics files for 4bit color sytem, mostly dithered 3D models, were killed by HDD crashes and lost.(*)     With 24bit full color system, I produced many test images with varied types of quadric surfaces and found that the curvature of hyperbolic paraboloid is sensitive to the parameter change. *some images are in my magazine article. "Graphics Library in Turbo Pascal", pp.11-33, Processor(1986 June, Gijutsu-Hyouron-Sha, Tokyo)

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In the wind      1985	Composition1986 1986	ph009      1986	0Music      1986	1Music      1986	Where are we?  1987	A Scene      1987	0reinc      1988
Wave      1988	Eclipse      1988	math904      1990	math905      1990	math906      1990	greeting      1990	communication-day      1990	comminucation-dawn      1990
communication-night      1991	vibrant drive      1991	innocent      1991	guilty      1991	D-flat major      1991	D minor      1991	1991      1991	float-g      1991
communication-horizon      1991	memorable time      1991	missing link      1991	into the rainbow      1992

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(c) Yoshiyuki Abe 阿部好志