Euler Angle

[Farabi]

Is it posible to have the euler angle from a rotation matrix? Im stuck thinking about it.

This is the only clue I had.

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; +,+ = 0-90
; +,- = 90-180
; -,- = 180-270
; -,+ = 270-360


fGetVectorLen proc uses esi edi lpV:dword

mov esi,lpV

fld [esi].VERTEX.x
fmul [esi].VERTEX.x
fstp [esi].VERTEX.x
fld [esi].VERTEX.y
fmul [esi].VERTEX.y
fstp [esi].VERTEX.y
fld [esi].VERTEX.z
fmul [esi].VERTEX.z
fstp [esi].VERTEX.z

fld [esi].VERTEX.x
fadd [esi].VERTEX.y
fadd [esi].VERTEX.z


ret
fGetVectorLen endp


invoke Vec_Sub,addr vR,lpfPos,addr VPosa ; Vector subtraction, from the Delta, we will determined is what is the euler angle.
invoke fGetVectorLen,addr vR



[dedndave]

http://en.wikipedia.org/wiki/Euler_angles

about half-way down the page, you will see 6 equations

[qWord]

FSQRT is missing in fGetVectorLen

[Farabi]

FSQRT is missing in fGetVectorLen

Oh, youre right, Im clumsy again. Thanks  :U
I never done something when Im alone.

I should be able to extract the euler angle degree information if I used atan on a 2D coordinate, but I dont know is it posible on 3D equations.

It should be
X=dX/len
Y=dY/len
Z=dZ/len