This pluggin is what I define as charityware and can be freely distributed. If
you find it useful make what you feel as an appropriate donation to your
favorite charity. You cannot charge or make any money from this routine by
reselling or bundling them with another package/cd/web page without my
permission.
To install this routine just copy the files into your 3ds Max plugin directory.
Planar Gravity 1.0
Planar Gravity is identical to the Max 2.0 Wind/Gravity except that it effects
are localized to the icon. Only particles that pass through the arrow and base
are affected. Any particles that pass through the base up to the arrow are
affected 100% and that pass through arrow the effect is decayed based on how
far the particle is from the arrow. See Gravity.max for a sample.
Width - is the width of the icon
Length - is the length of the icon
Inner - is the inner effect restraint
Outer - is the outer effect restraint
Spherical Gravity 1.0
Planar Gravity is identical to the Max 2.0 Wind/Gravity except that it effects
are localized to the icon. Only particles that pass through the inner and outer
radius are effected. Any particle passing through the inner radius is 100%
affected, any that pass through the outer are decayed based on distance. See
Gravity.max for a sample.
Friction - slows the particles as it leaves the gravity modifier.
Basically it causes the particles to orbit tighter
Cylindrical Gravity 1.0
Cylindrical Gravity is a cylindrical gravity well. It allows you to do such
effects as whirl pools and eddies. It works pretty much like all the other
gravity modifiers except is has multiple forces that work on the particles.
Inward Str is how fast the particles are pulled towards the center of the
cylinder
Downward Str is how fast the particles are pulled down the cylinder
Tangent Str is how fast the particles spin around the cylinder
Vortex causes the particles to pulled in ward faster based on how far down the
cylinder they are. This causes the particle system to taper in as they reach
the bottom
Friction bleeds off velocity causing the particles to orbit tighter around the
cylinder
See Vortex1.max for a sample. Usually to create a vortex you need a high inward
str, a small down ward strength, and large Outer radius. If your particles are
still at the begining you might want to put a little tangent str to get them
spinning and little friction tends to keep the particles from escaping.
Spiral Gravity works exactly like Cylindrical Gravity except it uses rotational
forces instead of tangental forces which makes it slightly easier to control.
Note this utility has not been fully tested in a production enviroment so use
at your own risk. If you encounter any problems please contact me at