2007/04/22

狄卡爾與CG

笛卡爾-1650年2月11日逝於瑞典斯德哥爾摩),法國哲學家數學家物理學家

詳細資料請洽 http://zh.wikipedia.org/wiki/%E7%AC%9B%E5%8D%A1%E5%B0%94

沒有狄卡爾 就沒有"解析幾何" 沒有解析幾何 就沒有使用二維或三維的直角坐標系

來研究平面、直線、曲面和圓的方程 也就不會有CG的誕生...

另外他在物理學方面 在<屈光學>中 首次對光的折射定律提出理論論證

力學上則發展了伽利略運動相對性的理論 等等...

就跟我以前說 沒有ILM就沒有photoshop 一樣

雖然關係很遠

不過加減看看這些東西其實有頗有趣的



就當是CG相關的歷史課看一看吧 無傷大雅



會來查這個主要是因為在"the magic of Houdini"讀到這段

"Rene was lying in bed while watching a fly.
At some pivotal moment, he realized that he could exactly describe the fly’s position
by using just three numbers.
He devised a system wherein each of the axes described above was designated with a letter:
x for width, y for height, and z for depth.
The point at which each of these axes intersects is called the world origin.
This point divides each axis into a positive and a negative side.
Houdini uses a right-hand coordinate system, which means that
x values become larger to the right of the origin and smaller to the left,
y values become larger above the origin and smaller below it,
and z values become larger the nearer the viewer and smaller as they are farther away from the viewer."

結論還是一句話....

有錢有閒真好 Q_Q

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