Camera control become inverse :(

[frank]

Hi there!

I would like to use camera motion to interact with my 3D model instead of
using drag Model fonction.

My script work just fine but it steal a problem when the model is rotating
180 degrees the manipulation become inverse :(

That is possible to fix this?

there is my full script for camera control:

property ax,ay,az
property mh,mv

on exitframe
-- record the world position of model "smallbox"(small box) into variable
"polePos"
polePos = vector (0, -2, 0 )
--
if the mousedown=true then
if mh<> the mouseh then
-- rotate camera number 1 (default camera) following y axis
(vector(0,1,0)
-- the centre point is on small box/"smallbox" (polePos)
-- rotate this much (mh-the mouseh)
member("3D").camera[1].rotate(polePos, vector(0,1,0), (mh-the mouseh),
#world)
--
mh = the mouseh
end if
if mv<> the mousev then
-- rotate camera number 1 (default camera) following y axis
(vector(0,1,0)
-- the centre point is on small box/"smallbox" (polePos)
-- rotate this much (mh-the mouseh)
member("3D").camera[1].rotate(polePos, vector(1,0,0), (mv-the mousev),
#world)
--
mv = the mousev
end if

else
mh=the mouseh
mv=the mousev


end if

end

[Karl Sigiscar]

With your code as it is, you could add a test updating a boolean, e.g
pIsGoingNorthward, to know whether you are going northward (e.g between -90
and 90° on the X axis) or not.

E.g, when you go northward, you update the position with a positive offset,
otherwise, you update the position with a negative offset.