[EFO]Kesha_F1 Posted May 11, 2014 Share Posted May 11, 2014 Hello guys. I need your help in problem with convert quaternions to MTA rotation! Maybe you know some working formula or some script, which help convert standard GTA mods to MTA? Example: ORIGINAL ID#, DFF Name, Interior#, X-Coord, Y-Coord, Z-Coord, RotationX, RotationY, RotationZ, RotationW, Flags 4816, ROCKLIFF1_LAS, 0, -2139.11, 1739.76, 2.75, 1.32679e-06, 1.32679e-06, -1, 1.76038e-12, -1 How convert in MTA rotation? Cheers, Kesha_F1. Link to comment
MTA Team sbx320 Posted May 12, 2014 MTA Team Share Posted May 12, 2014 (edited) The rotation you're searching for should be (0|-180|0). These two functions might help for automatic processing of .ide's: (Keep in mind that math.toeuler takes w as first parameter, while in .ide's W is the last rotation parameter) -- Return order is w, x, y, z function math.toquaternion(x, y, z) x = math.rad(x)/2 y = math.rad(y)/2 z = math.rad(z)/2 return math.cos(x) * math.cos(y) * math.cos(z) - math.sin(x) * math.sin(y) * math.sin(z), math.sin(x) * math.sin(y) * math.cos(z) + math.cos(x) * math.cos(y) * math.sin(z), math.sin(x) * math.cos(y) * math.cos(z) + math.cos(x) * math.sin(y) * math.sin(z), math.cos(x) * math.sin(y) * math.cos(z) - math.sin(x) * math.cos(y) * math.sin(z) end function math.toeuler(w, x, y, z) return math.deg(math.atan2(2*(y*w-x*z), 1-2*y^2-2*z^2)), math.deg(math.asin(2*(x*y+z*w))), math.deg(math.atan2(2*x*w-2*y*z,1-2*x^2-2*z^2)) end Edited May 12, 2014 by Guest Link to comment
[EFO]Kesha_F1 Posted May 12, 2014 Author Share Posted May 12, 2014 sbx320, Thank you for answer. Check please result of convert to Euler Angles and back! This formula returns completely different values! print( "-0.230214, 0.679713, 0.668583, -0.194906" ) local w local x, y, z = math.toeuler( -0.194906, -0.230214, 0.679713, 0.668583 ) w, x, y, z = math.toquaternion(x, y, z) print( x .. ", " .. y .. ", " .. z .. ", " .. w ) Link to comment
[EFO]Kesha_F1 Posted May 12, 2014 Author Share Posted May 12, 2014 sbx320, Checked the work updated formula. The example above is now working. But some objects receive incorrect values. I guess the formula either incorrect or incomplete. Perhaps in the formula necessary to consider how the object is rotated or negative/positive values quaternion. Link to comment
MTA Team sbx320 Posted May 13, 2014 MTA Team Share Posted May 13, 2014 I had some troubles when I converted ides to MTA objects a few months back. Going to look into that again when I get home. Should totally be solveable. Link to comment
[EFO]Kesha_F1 Posted May 13, 2014 Author Share Posted May 13, 2014 I had some troubles when I converted ides to MTA objects a few months back. Going to look into that again when I get home. Should totally be solveable. If we are together, we will solve this complex problem - we will give the community great opportunity to convert maps in GTA to MTA! P.S. No doubt we'll add you to the list of authors the script. Link to comment
Woovie Posted May 13, 2014 Share Posted May 13, 2014 sbx320 will probably solve it at a C++ level, not Lua. Link to comment
[EFO]Kesha_F1 Posted May 13, 2014 Author Share Posted May 13, 2014 sbx320 will probably solve it at a C++ level, not Lua. I understand, then do not need a special converter IPL->MAP or what? P.S. Possible, the objects are placed askew, if the angle is greater than 180 degrees. Maybe need ingreese check to 360 degrees? P.P.S. Example with sbx320 formulas: - Tower correct - Lights spot not correct Link to comment
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