Houdini 17.0 Shelf tools

Smoke from Object shelf tool

Creates a Smoke Object from SOP Geometry.

This tool sets the initial smoke conditions in the box. It does not continuously generate smoke as a Source from volume does in a container. This tool can be used, for example, to generate a puff of smoke or dust from a collision.

Using Smoke from Object

  1. Create a Smoke Container with a geometry object inside.

  2. Select the geometry object to convert to a smoke object.

    Note

    The geometry object has to have volume to be a valid source for volume-based smoke. For example, this tool will not work on a curve.

  3. Click the Smoke from Object tool on the Volume Fluids tab.

  4. Select the container to set the initial conditions and press Enter to confirm your selection.

To...Do this

Change the display option of the simulation

Alter the options on the Guides tab of the Smoke Object. For specific parameter help see the Smoke Object node help.

Change the buoyancy rate

Alter the default Buoyancy Lift on the Forces tab of the Smoke Solver. This parameter controls the rise and fall of smoke.

Change the cooling rate

Alter the default Cooling Rate on the Forces tab of the Smoke Solver. This parameter controls how fast the temperature field trends to zero.

Make the smoke cold (and fall)

On the Volume Ramp node in your object, select the right-side handle of the Scalar Ramp scale and change the Value to -1.

Note

The temperature does not work on any real world scale such as degrees or kelvins. Houdini works on the premise that 0 is neutral, a positive value is warm, and a negative value is cold.

See also

Shelf tools

Using the shelf

  • Customize the shelf

    How to change the look of the shelf, change and rearrange its contents, and create your own shelf tools.

Shelf tabs

  • Create tab

    Tools on the Create tab let you create and place primitives, curves, and null objects in the scene view.

  • Modify tab

    Tools on the Modify tab let you easily customize objects in the scene view.

  • Model tab

    Tools on the Model tab let you edit objects in the scene view.

  • Polygon tab

    Tools on the Polygon tab let you modify polygons in the scene view.

  • Deform tab

    Tools on the Deform tab let you deform objects in the scene view.

  • Texture tab

    Tools on the Texture tab let you texture objects in the scene view.

  • Rigging tab

    The Rigging tab contains tools for creating premade rigs.

  • Muscles tab

    The Muscles tab contains tools for creating muscles.

  • Characters tab

    Tools on the Character tab let you create characters in the scene view.

  • Constraints tab

    Tools on the Constraints tab create a constraint network where you can constrain objects to each other in the scene view.

  • Hair Utils tab

    Tools on the Hair Utils tab let you quickly set up hair and fur on objects.

  • Guide Process tab

    Tools on the Guide Process tab let you influence the placement and orientation of guide hairs by painting skin attributes.

  • Guide Brushes tab

    Tools on the Grooming tab let you add and directly manipulate hair.

  • Terrain FX shelf tab

  • Cloud FX tab

    The Cloud FX tab contains tools for creating cloud effects.

  • Volume tab

    The Volume tab contains tools for creating volume effects.

  • Lights and Cameras tab

    Tools on the Lights and Cameras tab let you create and place lights and cameras in the scene view.

  • Collisions tab

    Tools on the Collisions tab let you create collision objects in the scene view.

  • Particles tab

    Tools on the Particles tab let you create dynamic particle simulations.

  • Grains tab

    The Grains tab contains tools for simulate grains of sand and other granular matter.

  • Vellum tab

    The Vellum tab contains tools for creating different types of vellum effects.

  • Rigid Bodies tab

    Tools on the Rigid Bodies tab let you create dynamic RBD objects in the scene view.

  • Particle Fluids tab

    Tools on the Particle Fluids tab let you create particle based liquids in the scene view.

  • Viscous Fluids tab

    Viscous fluids are FLIP simulations that use a temperature attribute to drive viscosity.

  • Oceans tab

    The Oceans tab contains tools for creating ocean simulations.

  • Fluid Containers tab

    The Fluid Containers tab contains tools for creating pyro, smoke, and liquid containers.

  • Populate Containers tab

    The Populate Containers tab contains tools for creating and removing fire, smoke, and liquid.

  • Container Tools tab

    The Container Tools tab contains tools for manipulating fire, smoke, and liquid.

  • Pyro FX tab

    Tools on the Pryo FX tab let you create simulated smoke and fire effects.

  • Solid tab

    Tools on the Solid tab let you create and modify solid objects.

  • Wires tab

    Tools on the Wires tab let you create flexible dynamic objects in the scene view.

  • Crowds tab

    The Crowds tab contains tools for creating crowds, crowd behaviors, as well as examples.

  • Drive Simulation tab

    Tools on the Drive Simulation tab let you manipulate dynamic objects in the scene view.

Technical