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matrial3d参数分析
2022-06-21 11:25:00 【金融小白数据分析之路】
rotate3d(1, 2, -1, 192deg)
rotate3d(x,y,z,角度)
rotateX (a) 相当于 rotate3d (1, 0, 0, a)
【a b c p
d e f q
g h i r
l m n s】
T1 进行比例、对称、旋转、错切变换
[ a b c
d e f
g h i ]
局部比例变换 【ax ey iz i】
[x y z 1]
进行对z轴进行正向旋转 [xcosa-ysina xsina+ycosa z 1]
[
cosa sina 0 0
-sina cosa 0 0
0 0 1 0
0 0 0 1
]
进行对x轴进行正向旋转 [x ycosa-zsina ysina+zcosa 1]
[
1 0 0 0
0 cosa sina 0
0 -sina cosa 0
0 0 0 1
]
进行对y轴进行正向旋转 [xsina+xcosa y zcosa-xsina 1]
[
cosa 0 -sina 0
0 1 0 0
sina 0 cosa 0
0 0 0 1
]
T2=[ l m n] 对点进行平移变换
T3=
[p
q
r] 作用是进行透视投影变换
T4=[s] 作用是产生整体比例变换
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