 | | | clicking and Dragging models around a terrain | clicking and Dragging models around a terrain 2003-12-17 - By Alex da Franca
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if I understand correctly you want z to be the fixed Up vector.
since you do not want to move vertically (which
in my code is clumsy anyway...), you can simplify
the exitframe handler to:
on exitframe me
if ilk(pModel) = #model then
shift = the shiftdown
camPos = pCam.worldposition
fixedAxis = 3 -- 3 = z-axis; 2 = y-axis and 1 = x-axis
vHeight = pModel.worldposition[fixedAxis]
p = pCam.spriteSpaceToWorldSpace((the mouseLoc - pLeftTop - pOffset))
v = p - camPos
v.normalize()
if v[fixedAxis] <> 0 then -- if the vector is
parallel to the x-y plane we can't divide by 0
f = (p[fixedAxis] - vHeight) / v[fixedAxis]
pModel.worldposition = p - (v * f)
end if
end if
end
maybe you want to try to put it in the enterframe
handler instead of exitframe, because it runs
smoother then.
--
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a�ex
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