thinkingParticles offers many tools to help you paint with particles.
This texture map is meant to work with the PaintOperator
and supplies the needed effects to the operator.

This menu section controls how the a mono output of the texture map
should be created. This is usually used ot drive a transparency value.
Color - when checked, the transparency value (Alpha) will be derived
from the RGB values of the texture
Alpha - check this option to use the actual alpha value from the
texture map.
Gradient - when checked, a radial gradient is used to define the
alpha value.
Outside Value - sets the alpha value to be used "outside"
the radius, set in PaintOperator
This thinkingParticles texture map offers the feature to "paint"
multiple texture maps in one go. This is achieved by adding multiple texture
maps to a list box and by invoking the PaintOperator
to call each texture map, based on a collision event.
ADD Texmap - lets you add unlimited texture maps to be used by
the PaintOperator
that will chose them in sequence per particle.
REM - removes the selected texture Map from the list of available
texture maps