[概論] ２つのベクトルのなす角度
■参考
http://qiita.com/Hoshi_7/items/d04936883ff3eb1eed2d
http://yamagishi-2bit.blogspot.jp/2014/09/maxscript-9-point3.html
http://www.sousakuba.com/Programming/gs_two_vector_angle.html
ex). x, y, 座標系の絶対値のみで作例。
p1 = $Point001.pos - $Point002.pos
p1 = [(abs(p1.x)), (abs(p1.y)), 0.0]
p2 = [1.0, 0.0, 0.0]
theta = (dot (normalize p1) (normalize p2))
deg = acos theta
http://qiita.com/Hoshi_7/items/d04936883ff3eb1eed2d
http://yamagishi-2bit.blogspot.jp/2014/09/maxscript-9-point3.html
http://www.sousakuba.com/Programming/gs_two_vector_angle.html
ex). x, y, 座標系の絶対値のみで作例。
p1 = $Point001.pos - $Point002.pos
p1 = [(abs(p1.x)), (abs(p1.y)), 0.0]
p2 = [1.0, 0.0, 0.0]
theta = (dot (normalize p1) (normalize p2))
deg = acos theta
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