Camera Cull operator

The Camera Cull operator can be used to cull particles from display/render/export that are outside of a camera’s view frustum.


Cameras

  • Camera list: the list of input cameras that will be used to cull particles.

Operation

  • Hide particles: when enabled, particles will be hidden from display/render/etc, but not deleted from the flow. When this operation is selected, the cull process happens as a post-effect and does not directly affect the simulation.

  • Delete particles: when enabled, culled particles will be deleted. When this operation is selected, the Camera Cull operator has a direct, history-dependent impact on the simulation.

Mode

  • Frustum cull: particles will be culled based on whether or not they are inside of a camera’s frustum.

  • Distance cull: particles will be culled based on whether or not they are within a certain distance to an object.

In “distance cull” mode, any object can be used - not just cameras.

Frustum

  • Expand: the number of degrees to expand an input camera’s view frustum by.

Distance

  • Distance: the minimum distance to an input object that a particle must be in order to be culled.

  • Invert: inverts the effect of the distance cull (the distance value becomes a maximum value rather than a minimum value).

Affect

  • Display: when enabled, culling will affect particle display.

  • Render: when enabled, culling will affect particle rendering.

  • Export: when enabled, culling will affect particle exports.

  • Particle Interface: when enabled, culling will affect particle interfaces.