User Manual

Table Of Contents
Affect Spawned Particles
Selecting this checkbox causes particles created by spawning to also become affected by the
pSpawn node on subsequent frames. This can exponentially increase the number of particles in
the system, driving render times up to an unreasonable degree. Use this checkbox cautiously.
Velocity Transfer
This control determines how much velocity of the source particle is transferred to the particles it
spawns. The default value of 1.0 causes each new particle to adopt 100 percent of the velocity
and direction from its source particle. Lower values will transfer less of the original motion to the
new particle.
Common Controls
Conditions, Style, Region, and Settings Tabs
The Conditions, Style, Region, and Settings tabs are common to all Particle nodes, so their
descriptions can be found in “The Common Controls” section at the end of this chapter.
pTangent Force [pTF]
The pTangentForce node
pTangent Force Node Introduction
This node is used to apply a tangential force to the particles—a force that is applied
perpendicularly to the vector between the pTangent Force’s region and the particle it is
affecting.
Inputs
The pTangent Force node has a single orange input by default. Like most particle nodes, this
orange input accepts only other particle nodes. A green bitmap or mesh input appears on the
node when you set the Region menu in the Region tab to either Bitmap or Mesh.
Input: The orange input takes the output of other particle nodes.
Region: The green or magenta region input takes a 2D image or a 3D mesh
depending on whether you set the Region menu to Bitmap or Mesh. The color of
the input is determined by whichever is selected first in the menu. The 3D mesh or a
selectable channel from the bitmap defines the area where the tangent force effects
the particles.
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