Cylinder - miniRT-jiphyeonjeon/MiniRT GitHub Wiki

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์›๊ธฐ๋‘ฅ๊ณผ ๊ด‘์„ ์˜ ๊ต์ ์„ ์•„๋ž˜์™€ ๊ฐ™์€ ์‹์œผ๋กœ ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ๋‹ค.

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์—ฌ๊ธฐ์„œ ์ƒ์ˆ˜ โบ๋ฅผ ๊ตฌํ•˜๊ธฐ ์œ„ํ•ด ์ „๋ถ€ ์šฐ๋ณ€์œผ๋กœ ์˜ฎ๊ฒจ์ฃผ์ž.

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n์€ ๋‹จ์œ„๋ฒกํ„ฐ์ด๋ฏ€๋กœ ๊ธธ์ด๊ฐ€ 1์ธ ์ ์„ ์ด์šฉํ•ด ์–‘๋ณ€์— n๋ฅผ ๋‚ด์ ํ•ด์ค€๋‹ค.

์—ฌ๊ธฐ์„œ q์™€ n์€ ํ•ญ์ƒ 90ยฐ์ด๊ธฐ์— ์ด ๋‘˜์˜ ๋‚ด์ ์€ 0์ด ๋œ๋‹ค๋Š” ๊ฒƒ์„ ์žŠ์ง€๋ง์ž.

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์‹ (1)์— โบ๋ฅผ ๋Œ€์ž…ํ•˜๊ณ  q๋ฅผ ๊ตฌํ•ด๋ณด์ž.

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โบ๊ฐ€ 0๋ถ€ํ„ฐ ์ง€์ •๋œ ๋†’์ด h๊นŒ์ง€์˜ ๋ฒ”์œ„๋ฅผ ๊ฐ–๋Š” ๋™์•ˆ, ์›๊ธฐ๋‘ฅ์˜ ๋ฐฉ์ •์‹์€ ๊ณง ์›์˜ ๋ฐฉ์ •์‹๊ณผ ๋™์ผํ•˜๋‹ค.

์‹ (6)์„ qยทq - r^2 = 0์— ๋Œ€์ž…ํ•ด์„œ ์ง์ˆ˜๊ณต์‹์— ํ•„์š”ํ•œ a, b', c๋ฅผ ๊ตฌํ•ด๋ณด์ž.

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์ด ์ด์ฐจ๋ฐฉ์ •์‹์˜ ํ•ด๋ฅผ ๊ตฌํ•˜๋Š” ๊ฒƒ์„ ์ฝ”๋“œ๋กœ ๊ตฌํ˜„ํ•˜๊ณ ,

๊ต์ ์—์„œ์˜ normal vector์ธ q๋ฅผ ์‹ (4)๋ฅผ ํ†ตํ•ด ๊ณ„์‚ฐํ•ด์ฃผ๋ฉด ์›๊ธฐ๋‘ฅ ๊ทธ๋ฆฌ๊ธฐ ์™„๋ฃŒ!

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