Trailing

This node computes a trail on every item of a specified array.

It is designed to be used on sensor data from user interaction.

Properties

• Minimum speed : Minimum speed to start generating a trail
  Default : 0.20

• Fade in time : Time it takes for trail to appear (0% to 100% opacity) (in ms)
  Default : 200

• Fade out time : Time it takes for trail to disappear (100% to 0% opacity) (in ms)
  Default : 3000

• Step distance : Distance between two steps
  Default : 0.50

• Offset orientation : Offset the orientation of the steps in the trail (in degrees). This can be useful if what you are drawing has a distinct orientation.
  Default : 0.0

• Offset distance : Offset between the source and the trail (in pixels). This can be useful to avoid drawing too close to the source of the trail.
  Default : 0.0

Inputs

Outputs

In the output array, a property Code will be added and will alternate 1 and 0 every other item in the trail.

This can be useful to separate the trail into two sets for left and right purposes (like footsteps).

Example

Here is a preview of the Trailing node setup in a compute graph:

Here is a sample effect made in a Render Graph and making use of the Trailing node’s data:

In this example:

• Fade in time : 100
• Fade out time : 3000
• Step distance : 100