| [ QuizWit ] in KIDS 글 쓴 이(By): parsec ( 먼 소 류 ) 날 짜 (Date): 2003년 8월 6일 수요일 오전 10시 22분 18초 제 목(Title): Re: random points on sphere 이미 나온 답들이겠지만 정리하면 1) Archimedean projection (from side of a cylinder to sphere) 2) uniform dist. in a cube -> filter with a sphere --> projection to the surface 3) electrons on the surface(simulated annealing???) 그 외에 pseudo-uniformity를 얻는 방법들: 4) random walking along the surface(directions taken randomly at each tagent plane) 5) partial uniform dist. on each face(in proportion to each area) of a bucky-ball --> projection to the containg sphere (I don't recommend) 6) for an archimedean spiral on the sphere(theta=a*phi), uniform dist. along the spiral --> then spreading vertically to the spiral. /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ... May the source be with you! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ |