Real Speed HDA

HDA for Calculating, Converting, and Adjusting Speed in Convenient Units

Created using Houdini 19.5

HDA Informations

Location

• In the SOP Context Digital Assets/Real Speed

• Inputs
  1. Connect Geometry for Processing

• Detail Attribute
  1. It Will Create Detail Attribute Named Real Speed

HDA Controls (In Order)

Convert

Automatically calculates v if it doesn’t exist; otherwise, uses the existing v to calculate speed in different units.

Where

Element type for the destination attribute (specified by Attribute Name).

What

The name of the attribute to create or modify1. If the attribute does not exist with the given name, it will be added to the selected Attribute Class. This node can be used only on float type attributes.

Unit Settings

To

Allows you to specify units for the Speed to convert to and the node will internally perform the conversions. There are presets for commonly used units of speed.

In

Allows you to specify the Time, unless the above unit is dimensionless.

Note

Mach Number is calculated with Speed of Sound at 20 °C in Dry Air.

Multiplier

Allows to adjust the speed which internally changes the velocity.

Floating Points

Increase or Decrease the floating points, useful at Mach Speed, God Speed.

Disclaimer

I have created this HDA to the best of my knowledge and have tested it on various scenarios. However, this doesn’t guarantee that it will always work, although it most certainly should!

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Photo by Luke Jernejcic on Unsplash