Controls the overall opacity of the trail. Lower this value to make the trails more transparent.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Opacity will be between Alpha - Variation and Alpha + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Provides a ramp to control the opacity values over the length of the trails.

Controls how the opacity values change across the length of the trail. The left side is the tail of the trail, while the right side of the ramp represents the head of the trail.

Provides a ramp to control the opacity values over the lifetime of the trails.

Controls how the opacity values change over the lifetime of the trail. The left side is the birth of the particle, while the right side represents its end.

Sets the emission intensity for the trail. Increase this value to make the trails brighter. This value acts as a multiplier on the color of the trail.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Intensity will be between Scale - Variation and Scale + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Provides a ramp to control the intensity values over the length of the trails.

Controls how the intensity values change across the length of the trail. The left side is the tail of the trail, while the right side of the ramp represents the head of the trail.

Provides a ramp to control the intensity values over the lifetime of the trails.

Controls how the intensity values change over the lifetime of the trail. The left side is the birth of the particle, while the right side of the ramp represents its end.

Controls the overall color of the trail. To get more natural looking trails/sparks change the menu on the right side of this parameter from Constant to Use Ramp or Specific Values. When the menu is set to Sample Ramp or Specific Values, the value will act as a multiplier on the color values.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

This value is the angle along the color wheel to shift the input color. The starting color is given by the Color parameter.

This value acts as a multiplier on the saturation of the input color. The starting color is given by the Color parameter.

This value acts as a multiplier on the brightness of the input color. The starting color is given by the Color parameter.

Controls how the color is mapped to the trails. Every trail samples a random position on this ramp.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

This menu contains a set of pre-defined color palettes. Selecting one of these options will populate the list of specific values with four preset colors.

Controls the number of sets of possible colors. Each set can be a single color or consist of multiple related colors (when the menu to the right of the parameter is not set to Constant or Complementary).

Provides a ramp to control the color values over the length of the trails.

Controls how the color values change across the length of the trail. The left side is the tail of the trail, while the right side of the ramp represents the head of the trail.

Provides a ramp to control the color values over the lifetime of the trails.

Controls how the particle trail colors change over their lifetime. The left side is the birth of the particle, while the right side represents its end.

Enables the splitting of the trails to mimic the look of bursting sparks or splashing rain. The generated splits are only approximations of the real physical behavior you could achieve with a particle simulation. However, using the Particle Trail node has the benefit of providing faster iteration times without the need for complex particle simulation setups. It also gives you more directable controls over the splits, which happen near the end of the particle’s lifetime. Split Duration is the number of frames between the split and the particle’s death.

Controls the number of input particles to use for splitting. The value of 100 means all particles will split, while the value of 0 means no splitting.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

When Percent to Split is less than 100, controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Keeps the trails from the splits, but removes the trail for the input particles after the split.

The number of splits to generate per input point. Increase this parameter to generate more splits. Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. The number of copied points will be between Splits per Point - Variation and Splits per Point + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Sets the minimum angle the generated splits can spread out from the velocity direction of the particle.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. The angle will be between Split Start Angle - Variation and Split Start Angle + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Sets the maximum angle the generated splits can spread out from the velocity direction of the particle.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. The angle will be between Split End Angle - Variation and Split End Angle + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Controls the velocity of the split trails relative to the source particle’s velocity. Increase this value to make the split trails move further.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. The angle will be between Split Velocity Scale - Variation and Split Velocity Scale + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Controls the range of speeds inherited by split particles. Larger values result in greater variation among speeds of trails split from the same source particle. You need to turn on this checkbox to vary velocity scale for the split trails generated from the same input particle.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Sets the force that attracts the projectile towards the ground. Set all components to zero if you want straight trails, which are not affected by gravity.

Sets the air resistance for the projectile. Higher values will result in faster loss of energy and shorter travel distance. Drag of zero will produce a symmetric arc. If the incoming geometry has a drag point attribute, its value will be used instead of this parameter.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the mass for the projectile. Higher values will cause the projectile to more strongly resist drag and travel a longer distance. If the incoming geometry has a mass point attribute, its value will be used instead of this parameter.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

The height to use for clipping. Trajectories will terminate once the Y-value falls below this value. If particles start below this height, they will be clipped when they fall below their initial height instead.

When enabled, controls the speed of split trails over their lifetime.

Controls how the speed values change over the lifetime of the split trail. The left side is the birth of the particle, while the right side of the ramp represents its end.

Sets the life of the split trails in frames. Increase this value to make the split trails visible for longer.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. The angle will be between Split Velocity Scale - Variation and Split Velocity Scale + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Sets the maximum allowed life extension for each split trail. You need to turn on this checkbox to vary the life for the split trails generated from the same input particle.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Controls how the length of the trail is generated.

Sets the number of past frames to use to trail the particles.

Shutter-open time, relative to the current time. This is used to calculate motion blur, and affects trial lengths. You can use a negative value to indicate that the shutter opens before the current time.

Shutter-close time, relative to the current time. This is used to calculate motion blur. Larger difference between Shutter Close and Shutter Open will result in longer trails. If this is not greater than Shutter Open, then the trails will have no length.

Controls the relative length of the trail. Increase this value to make the trails shorter starting from the tail.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Tail width will be between Tail Width - Variation and Tail Width + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Controls the relative length of the trail. Increase this value to make the trails shorter starting from the tail.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Tail width will be between Tail Width - Variation and Tail Width + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

When Trail Method is set to Shutter and this checkbox is on, the trails are generated considering the motion of the camera (specified by Camera). When you render with a moving camera, it is necessary to compensate for the camera’s motion as the trails needs to be rendered without any motion blur enabled. You must view the trails from the viewpoint of the camera for the results to look correct.

Varies the point position of the trails using a noise pattern to add a bit of a wobble to the sparks, which results in more interesting/fuzzy looking sparks. This can be useful if you're trying to create a magical effect, or simulate ribbons shooting out of a cannon.

Sets the strength of the noise.

Controls the base feature size of the generated noise.

Offsets the features of the noise pattern. Change the value of the Offset if the current pattern is undesirable.

Controls the overall thickness of the trail. Increase this value to make the trails thicker. To vary the thickness across the length of the trail, use the Tail Width and Head Width parameters.

Controls the thickness at the tail of the trail. Increase this value to make the trails thicker at the tail. Thickness along the trail is linearly interpolated between Head Width and Tail Width.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Tail width will be between Tail Width - Variation and Tail Width + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Controls the thickness at the head of the trail. Increase this value to make the trails thicker at the head. Thickness along the trail is linearly interpolated between Head Width and Tail Width.

Click the randomization button on the right side of this parameter to randomize the value per incoming element. This will create/select a corresponding attribute adjust node to give you greater control over the parameter’s value.

Sets the maximum allowed variation. Head width will be between Head Width - Variation and Head Width + Variation.

Controls random selection for variation. Change the value of the Seed if the current variation is undesirable.

Provides a ramp to control the width values over the length of the trails. The evaluated ramp value is multiplied by the interpolated value from Head Width and Tail Width to obtain the actual width.

Controls how the width values change across the length of the trail. The left side is the tail of the trail, while the right side of the ramp represents the head of the trail.

Provides a ramp to control the width values over the lifetime of the trails.

Controls how the width values change over the lifetime of the trail. The left side is the birth of the particle, while the right side of the ramp represents its end.

Varies the width values across the length of the trail using noise pattern. The value of the noise pattern will be used as a multiplier on the width. Use this to create more interesting-looking trails.

Sets the strength of the noise.

Controls the base feature size of the generated noise.

Offsets the features of the noise pattern. Change the value of the Offset if the current pattern is undesirable.

When the checkbox is on, widths are clamped against the provided minimum, after the noise is applied.

Particle trails will be generated when this parameter is on. Disable this (and make sure Output Split Trails is enabled) if you only want to generate split trails without input particle trails.

Split trails will be generated when this parameter is on.

When enabled, a primitive group of this name will be created to contain particle trails.

When enabled, a primitive group of this name will be created to contain split trails.0

The point attribute storing the index number of the generated split trails.

The point attribute storing a unique hash number of the generated split trails. This number is generated from the combination of the seed attribute (as set by Seed) and the split index.

The point attribute storing a zero to one value, which start to increase from 0 when the split trail is created until 1 when the split trail is killed.

The point attribute storing the relative position of each point along the trail.