Gravitation3D Tips and Troubleshooting
Try to control the Animation Speed with the slider control, not the time
the time step has a visual effect on how fast your system evolves, it is better
to speed up your simulation with the animation controls.
The reason is that though a larger time step will appear to speed things
up, it also makes the calculations less accurate and your system more unstable.
Tip: Hacking the Definition File
are encouraged to muck with the saved Gravitation3D files using a text editor!
You will find a few goodies in there.
There are some items not controllable through the UI (planned V2.0
features that are not yet maturely developed) and some items I didnít want to
give the more casual user control over. The
file was designed to be readable.
is, of course, no guarantee that Gravitation3D will be able to read your changes
or deal with them properly, so you might want to make a backup of any solar
system with which you decide to go alter the internals.
There is also no guarantee that everything you see in the definition file
currently even does something.
simulations run sloooooooow!
program is meant to run on a modern machine with a graphics accelerated video
card. However, some features
are more intensive than others and can be changed to improve performance.
Among the items you can change are:
Turning down the Trail Length or Trail Accuracy on the Drawing
is one of the best ways to improve speed.
Drawing every simulation point just becomes a lot for the computer to
handle. Trails are one of the
main reasons Version 1.0 limits the simulations to 100,000 steps.
Unchecking ďFade TrailsĒ can also help.
noticed on my home Pentium III, NVidia TNT2 that the text actually slows things
dramatically. Though you canít turn off the registration text
without registering, turning the axes labels off can help.
things to try
the star count or donít display stars.
warping is a cool effect, but can be expensive.
collisions are less intensive than Elastic or Inelastic collisions.
view in wireframe (surprisingly this is slower than filled mode).
added planets but canít see them!
sure all your radii have positive values that are reasonably sized relative
to the overall scale of your system.
the scaling page, if you drag the first Radii Scaling slider closer to
ďuniformĒ, this should help planets with small radii to come into view.
can't edit planet values!
need to be in the reset state. Press
ĎRí or push the reset button on the simulations pane.
come I canít zoom out with some of the sample systems??
view may be slaved to a planet, so check this if the mouse doesnít seem to be