Re: [Celestia-developers] Proposed travel patch

[Christophe T. <ch...@te...>]

On Monday 21 April 2003 19:05, Chris Laurel wrote:
> There are three phases: orientation = initial, interpolating orientation,
> and orientation = final.  The amount of time spent in each phase should be
> selectable.  Actually, just specifying the length of the initial and final
> phases is enough, as the length of the interpolating phase is just
> 1 - (initial + final)

This new patch makes it configurable, you specify the start and end of the 
interpolating phase (in the 0-1 range).

I've left the default to 0.25, 0.75 for now but that can be easily changed, 
and it's 0, 1 when centering. 

It's now using sin² instead of sin in the interpolating phase for increased 
smoothness :-)

I've also added it to the observer:goto command as optional 3rd and 4th 
arguments.

> At a later point, I want to add different methods for interpolating
> position as well.  A 'great circle' mode would be particularly useful when
> travelling between objects in low Earth orbit for example.  Right now,
> zooming from Hubble to ISS will more likely than not involve zooming
> through the Earth's mantle :)

Generaly we should have basic collision detection, at least for spherical 
objects. 

--
Christophe