Display Bifröst diagnostic information

You can display the values of attribute channels as color ramps, numeric values, or vectors in the viewport. This lets you analyze or diagnose your simulation.

The attributes that you can display depend on the type of simulation. For example, you can visualize Vorticity or Churn in liquids and Smoke in Aero simulations. Some attributes like Position and Velocity are updated by the simulation, while others are set in the emitterProps attributes and are transported along with the particles.

Display diagnostic colors

  1. In the Display attribute group of the bifrostShape node, choose Particles or Voxels as desired.
  2. Activate Color in the Particle Display or Voxel Display group as appropriate.
  3. Select the Channel to display. For vector attributes like position and velocity, the magnitude is used to drive the color ramp.
  4. Expand Color Channel Remap, and set Color Channel Min and Color Channel Max to the range you want. Values outside this range get clamped to the limits of the color ramp.
  5. Use the color ramp to define a gradient for display.
  6. If desired, use the value ramp to remap channel values before applying the color ramp. For example, you can clamp and bias values to focus on a subrange of values.
Tip: You can use the Clipping attributes under Bifrost Controls to preview a slice of the shape.

Display numeric values or vectors

  1. In the Display attribute group of the bifrostShape node, make sure that Particles is selected.
  2. In the Particle Display group, select Numeric or Vector.
  3. Select the channel to display.
Tip: Decrease Max Particle Display Count to make it easier to read values.