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Vector3

3์ฐจ์› ๋ฒกํ„ฐ ํด๋ž˜์Šค. ๋‹ค์–‘ํ•œ ๋ฒกํ„ฐ ์—ฐ์‚ฐ ๋“ฑ์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค.

์•„๋ž˜ ๋‚ด์šฉ ์ด์™ธ์—๋„ THREE.Vector3์˜ ๋‹ค์–‘ํ•œ ์†์„ฑ๊ณผ ๋ฉ”์†Œ๋“œ๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์†์„ฑ

.x

๋ฒกํ„ฐ์˜ x ๊ฐ’. ๊ธฐ๋ณธ๊ฐ’์€ 0์ž…๋‹ˆ๋‹ค.

.y

๋ฒกํ„ฐ์˜ y ๊ฐ’. ๊ธฐ๋ณธ๊ฐ’์€ 0์ž…๋‹ˆ๋‹ค.

.z

๋ฒกํ„ฐ์˜ z ๊ฐ’. ๊ธฐ๋ณธ๊ฐ’์€ 0์ž…๋‹ˆ๋‹ค.

๋ฉ”์†Œ๋“œ

.add()

origin_vector.add ( add_vector : Vector3 ) : this

origin_vector์— add_vector๋ฅผ ๋”ํ•˜์—ฌ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.
๊ธฐ์กด์˜ ๋ฒกํ„ฐ ์ž์ฒด๋ฅผ ๋ณ€๊ฒฝํ•˜์ง€ ์•Š๊ณ  ์ƒˆ๋กœ์šด ๋ฒกํ„ฐ๋ฅผ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

.angleTo()

origin_vector.angleTo ( target_vector : Vector3 ) : Float

origin_vector์™€ target_vector ์‚ฌ์ด์˜ ๊ฐ๋„๋ฅผ ๋ผ๋””์•ˆ ๋‹จ์œ„๋กœ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

.distanceTo()

origin_vector.distanceTo ( target_vector : Vector3 ) : Float

origin_vector์—์„œ target_vector๊นŒ์ง€์˜ ๊ฑฐ๋ฆฌ๋ฅผ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๋‹ค.

.clone()

origin_vector.clone () : Vector3

origin_vector ๊ฐ’๊ณผ ๋™์ผํ•œ x, y, z ๊ฐ’์„ ๊ฐ€์ง„ ์ƒˆ Vector3์„ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.
์ด ๋ฉ”์†Œ๋“œ๋Š” ๊ธฐ์กด ๋ฒกํ„ฐ๋ฅผ ๋ณ€๊ฒฝํ•˜์ง€ ์•Š๊ณ , ๋ณต์ œ๋œ ๋ฒกํ„ฐ๋ฅผ ์ƒˆ๋กœ์šด ๊ฐ์ฒด๋กœ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

.copy()

origin_vector.copy ( target_vector : Vector3 ) : this

target_vector์˜ x, y, z ์†์„ฑ ๊ฐ’์„ origin_vector์— ๋ณต์‚ฌํ•˜๊ณ  ๊ทธ ๊ฐ’์„ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.
origin_vector์˜ ๊ฐ’์€ target_vector์˜ ๊ฐ’์œผ๋กœ ๋ณ€ํ™˜๋ฉ๋‹ˆ๋‹ค.

.length()

target_vector.length () : Float

(0, 0, 0)๋ถ€ํ„ฐ target_vector(x, y, z)๊นŒ์ง€ ์œ ํด๋ฆฌ๋“œ ๊ธธ์ด(์ง์„  ๊ธธ์ด)๋ฅผ ๊ณ„์‚ฐํ•ฉ๋‹ˆ๋‹ค.

.multiplyScalar()

origin_vector.multiplyScalar ( s : Float ) : this

origin_vector์— ์Šค์นผ๋ผ s๋ฅผ ๊ณฑํ•ฉ๋‹ˆ๋‹ค.
์ด ๋ฉ”์†Œ๋“œ๋Š” ๊ธฐ์กด์˜ ๋ฒกํ„ฐ๋ฅผ ๋ณ€๊ฒฝํ•˜์ง€ ์•Š๊ณ , ๊ฐ ์„ฑ๋ถ„์— ์Šค์นผ๋ผ ๊ฐ’์„ ๊ณฑํ•œ ๊ฒฐ๊ณผ๋ฅผ ์ƒˆ๋กœ์šด ๋ฒกํ„ฐ๋กœ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

.normalize()

origin_vector.normalize () : this

ํ˜„์žฌ ๋ฒกํ„ฐ๋ฅผ ๋‹จ์œ„ ๋ฒกํ„ฐ(unit vector)๋กœ ์ •๊ทœํ™”(normalize)ํ•˜๋Š” ๊ธฐ๋Šฅ์„ ์ˆ˜ํ–‰ํ•ฉ๋‹ˆ๋‹ค.
์ •๊ทœํ™”๋ž€ ๋ฒกํ„ฐ์˜ ๊ธธ์ด๋ฅผ 1๋กœ ๋งŒ๋“œ๋Š” ๊ฒƒ์„ ๋งํ•˜๋ฉฐ, ๋ฐฉํ–ฅ์€ ์›๋ž˜ ๋ฒกํ„ฐ์™€ ๋™์ผํ•˜์ง€๋งŒ ํฌ๊ธฐ๋งŒ 1๋กœ ์กฐ์ •๋œ ์ƒˆ๋กœ์šด ๋ฒกํ„ฐ๋ฅผ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.
์ด ๋ฉ”์†Œ๋“œ๋Š” origin_vector๋ฅผ ๋ณ€ํ™˜์‹œํ‚ค๋ฉฐ, ์ •๊ทœํ™”๋œ(unit) ๋ฒกํ„ฐ๋ฅผ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

.set()

origin_vector.set ( x : Float, y : Float, z : Float ) : this

๋ฒกํ„ฐ์˜ x, y, z ๊ตฌ์„ฑ์š”์†Œ๋ฅผ ์„ค์ •ํ•ฉ๋‹ˆ๋‹ค.
์ด ๋ฉ”์†Œ๋“œ๋Š” origin_vector๋ฅผ ๋ณ€๊ฒฝํ•˜๋ฉฐ, ์ƒˆ๋กœ์šด ๊ฐ’์„ ์„ค์ •ํ•œ ํ›„์—๋Š” ๋ณ€๊ฒฝ๋œ ๋ฒกํ„ฐ ์ž์ฒด๋ฅผ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.