Re: Smoothly rotating to another angle on pano nodes

[Christian W. <cwa...@gm...>]

James C. Wilson wrote:
> When I run this code, Pipmak will smoothly rotate to either 90, 90, or 
> 90, -90(disregarding panorama limits), and slowly spins.
> I can tell there's something wrong with this code, but I don't know what 
> it is exactly, or how to fix it. Can anyone suggest a possible solution? 

I probably can, if you can explain what exactly you want to achieve, or 
what you expect this code to do. I can see that it approximately does 
what you describe, but I can't tell in how far that is not what you expect.

A few comments on details that seem strange to me:

> local tarAZ, tarEL = 45, 45
> local viewAZ, viewEL = pipmak.getviewdirection()
> local speedAZ, speedEL
>   
>       if viewAZ > tarAZ then
>         speedAZ = viewAZ / tarAZ
>       elseif viewAZ < tarAZ then
>         speedAZ = tarAZ / viewAZ
Are you aware that you may be dividing by zero here?
>       end
You don't handle the case viewAZ == tarAZ here and leave speedAZ = nil 
in that case, is that what you want?
>       if viewEL > tarEL then
>         speedEL = viewEL / tarEL
>       elseif viewEL < tarEL then
>         speedEL = tarEL / viewEL
>       end
> hotspotmap "hotspotmap.png"
> hotspot {
>   onmousedown = function()
>   pipmak.schedule(
>     0.02,
>   function()
>       viewAZ, viewEL = pipmak.getviewdirection()  
>       if viewAZ == tarAZ and viewEL == tarEL then
>       viewAZ, viewEL = tarAZ, tarEL
What's the point of this assignment? It has no effect since in the "if" 
statement you just checked that its outcome is already true before.
>       pipmak.setviewdirection( viewAZ + 0.8, viewEL * speedEL + 0.8 )
>       end
>       return 0.02
If you always return a number, the timer will repeat indefinitely, is 
that what you want?
>    end
>   )
> end
> }

  -Christian