Outro dia tava a matutar em como poderia gerar geometria 3d proceduralemnte, e dei com isto :
http://www.freigeist.cc/gallery.html
xernobly, nao estava a brincar com algo similar a isto na GC ?
isso é fixe. no outro dia o vic andava a brincar com coisas parecidas, para superficies esfericas.
andavamos a ver era se atinavamos com a metodologia de calcular normais atraves da derivada parcial em vez de fazer o habitual truque do dotproduct dos vectores retirados do ponto anterior com o ponto actual. a ver se dava normais mais melhor boas e / ou rapidas, mas a matematica anda um bocado enferrujada. :S
Eu tinha ideia de utilizar essas fórmulas para gerar modelos proceduralmente, mas aquelas formulas nao me parecem propriamente leves do ponto de vista computacional...
A maneira mais versatil de fazer essas cenas é usar marching cubes. É possivel gerar algumas das formas assim a fazer uma mesh a percorrer de cima a baixo, mas não funciona para todas. Se usares umas mudanças de coordenadas também é fácil fazer outras.
Já deixei as consolas sosegadas. Agora habituei-me a shaders e acho qualquer cena sem shaders horrivel de programar :D
existe ainda esta grande referência:
Paul Bourke: http://local.wasp.uwa.edu.au/~pbourke/
Esse site é tipo o erowid das formas geométricas :)
Bookmarked!
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