These are the descriptions of the items in the nParticle Tool options window.
The name helps you identify the object in the Outliner. If you don’t enter a name, the particle object receives a default name such as particle1.
Specifies which Maya Nucleus solver the nParticle object belongs to. Select a solver from the drop-down list (existing Maya Nucleus solvers are listed), or select Create New Solver to create a new Maya Nucleus solver for the new nParticle object.
Influences the motion of particles whose velocity and acceleration attributes are controlled by dynamic effects. See nParticle Dynamic Properties.
Lets you specify the number of particles you want to create per mouse click
If you choose a number greater than 1 for Number of Particles, you can distribute particles randomly in a spherical region where you click. To choose a spherical region, set Maximum Radius to a value greater than 0.
When this option is selected, drag the mouse to sketch a continuous stream of particles.
This sets the pixel spacing between particles. A value of 0 gives you nearly a solid line of pixels. The higher the value, the more space between the pixels.
Creates a 2D or 3D nParticle grid.
Only active when creating a particle grid. Sets the spacing (in units) between particles in the grid.
Choose with cursor, to set the volume with your cursor, or with text fields, to set the grid co-ordinates manually.
The x, y, z co-ordinates of the lower left corner of the 3D particle grid.
The x, y, z co-ordinates of the upper right corner of the 3D particle grid.