Novice question -- orientation/scale matrix.

[Jarema]

How in mathematician way I can detect angle of rotation? From Line type 1 as simple|primitive file reference. The generic format is:

Code:

1 <colour> x y z a b c d e f g h i <file>

[Roland Melkert]

How in mathematician way I can detect angle of rotation? From Line type 1 as simple|primitive file reference. The generic format is:

Code:

1 <colour> x y z a b c d e f g h i <file>

There isn't a universal way of doing that you'll need to know some of the original parameters (e.g. was a Y-axis rotation).

You can extract an x,y,z angles (tilt/yaw/roll) but then you'll still need to know the order of the original angles, and even then you won't get the exact same results just values which give the same matrix.

[Jarema]

What You can say about this references:
1 72 0.0 -8.0 -59.0 1 0 0 0 1 0 0 0 1 4282.dat
1 272 64.5 -74.5 -271.25 -0.9 -0.1 -0.1 -0.1 0.7 0.6 0 0.6 -0.7 3819.dat

According to The LDraw Unit Matrix It is like:

Code:

1 0 0 0
0 1 0 -8
0 0 1 -59
0 0 0 1

-0.9 -0.1 -0.1  64.5
-0.1  0.7  0.6 -74.5
0.0  0.6 -0.7 -271.25
0.0  0.0 0.0   0.1