= Visualize simulation data =

== Show an object's collision representation ==

The dynamics engine uses a simplified version of an object's geometry to calculate collisions.

To show this geometry in the viewer, show the object's parameters and click the __Collisions__ tab, then the __Volume__ sub-tab, then turn on __Show collision guide geometry__.

== Cloth and wire visualization ==

The [Cloth Object|Node:dop/clothobject] and [Wire Object|Node:dop/wireobject] have __Visualization__ tabs that let you show the effects of forces on the object as colored lines.

The most important forces for cloth are external forces, collision forces, impacts, stretch energy, and sometimes stretch force and biphasic force.

== Fluid visualizations == (fluids)

# Select the [Smoke|Node:dop/smokeobject] (density) or [Fluid|Node:dop/fluidobject] (sign distance) box you want to visualize. If you're not already in the dynamics network, choose the [Icon:TOOLS/select] Select tool and [Icon:TOOLS/select_dynamics] Dynamics selection mode, then click the box in the viewer.

# In the parameter editor, click the __Guides__ tab at the bottom.

The __Guides__ tab contains many sub-tabs with controls for visualizing different aspects of the field. For example, you can use the controls on the __Velocity__ sub-tab to view the velocity of the contained gas/fluid at each point using lines, or through a plane using streamers.

== Using visualization geometry ==

You can import visualization geometry into a geometry network just as you can import the actual surface or volume of an object. See the section on [importing and exporting simulation data|io].