Speed

Under Speed, you can configure animations for which speed is made to vary versus the initial velocity a time of particle emission.

Shader Creation Panel Settings and Features

This page describes Speed settings and features.

To read about the common features Enable and Copy Resource, see here.

Particle speed
A Add initial velocity. Use the pull-down menu to add and configure the initial velocity when a particle is emitted and the emission method.
For the emission method, choose either Spread out from y-axis, Spread out from origin, Random direction, Specified direction or Specified random direction.
B Randomize results Randomly change the particle emission speed (initial velocity).
C Add animation From the pull-down menu you can add and configure animations that will change relative to the particle speed after particles have been emitted.
For the animation, select either Accelerate/decelerate, Gravity (accelerate in specific direction), or Random (speed).

Add initial velocity

Use this to add a setting for initial velocity.

You can add any of the four following particle emission methods.

Item Description
Spread Out from Y Axis Causes particles to spread out horizontally outwardly from the central (Y) axis of the particle emitter.
Spread Out from Origin Causes particles to spread out from the emitter origin.
Random Direction Varies the direction and initial speed of a particle at the time of emission.
Specified Direction Specifies the initial direction and speed of a particle at the time of emission.
Specified Random Direction Specifies the initial direction and speed of a particle at the time of emission and also spreads the particles out in an elliptical shape.

Spread Out from Y Axis

Causes particles to spread out horizontally outwardly from the central (Y) axis of the particle emitter.

Particle Speed 01
Delete

Deletes diffuse settings from the Y axis.

Speed

Specifies the speed at which particles spread out from the Y axis.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Spread Out from Origin

You can make particles spread out from the emitter origin.

Particle Speed 01
Delete

Deletes diffuse settings from the origin.

Speed

Specifies the speed at which particles spread out from the origin.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Random Direction

You can change the direction and initial speed of a particle at the time of emission.

Particle Speed 01
Delete

Deletes the random direction setting.

Speed

Specifies the random direction initial speed setting.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Specified Direction

Specifies the initial direction and speed of a particle at the time of emission.

Particle Speed 01
Delete

Deletes the specified direction setting.

Direction:

Specifies the direction of motion at time of particle emission for each of the X, Y and Z axes.

Speed

Specifies the speed for the specified direction.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Specified Random Direction

Use this to specify the initial direction and speed of a particle at the time of emission and to randomize the angle at which the particle emits.

Particle Speed 01
Delete

Deletes the setting for Specified Random Direction.

Direction:

Specifies the direction of motion at time of particle emission for each of the X, Y and Z axes.

Speed

Specifies the speed for the specified direction.

Random angle

Use this to set any value between 0 and 360 for the angle of the particle when it emits.

The emission angle is randomized within the range of this set angle.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Add animation

Under Speed, you can configure animations for which speed is made to vary versus the initial velocity a time of particle emission.

You can add any of the following three items for animations:

Item Description
Acceleration/Deceleration Allows you to accelerate or decelerate particles by multiplying a specified value times the particle speed.
Gravity (accelerate in specified direction) Allows you to apply gravity by adding to the speed in a specified direction for a particle.
Randomness (velocity) Allows you to apply a random force in the specified direction to the particle speed.

Acceleration/Deceleration

You can cause particles to speed up or slow down.

Particle Speed 07
Delete

Deletes the Accelerate/decelerate setting.

Ratio

Specifies the value by which particle speeds are multiplied every frame. Practical values range from 0.9 to 1.1, but you can also use values beyond this range.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Gravity (accelerate in specified direction)

You can cause a particle to move in the specified direction with inertia in a realistic manner.

Particle Speed 08
Delete

Deletes the Gravity (accelerate in specified direction) setting.

Direction:

Specifies the direction in which the particle moves in terms of X, Y, and Z values. Valid values range between -1 and 1.

Speed

Specifies the value to increase particle speed each frame.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.

Randomness (velocity)

You can make each particle gradually speed up.

Particle Speed 09
Delete

Deletes the Random (speed) setting.

Strength

Specifies the value added to the particle's speed.

Frame Interval

Specifies the interval for adding values to the particle's speed, as a number of frames.

Runtime Setting

To read about the Enable checkbox and resource copying, see here.


CONFIDENTIAL