In Portuguese, the word "Lagoa" means "lagoon, pond, or small lake."
In Softimage, the word "Lagoa" means a multiphysics simulator that uses ICE to create amazing fluid, soft body, rigid body, and cloth effects. It is a framework for building different physical effects in a single unified environment.
Image courtesy of Lagoa Multiphysicsª
There are many ways in which you get started with Lagoa.
Once you have a Lagoa ICE tree set up, you can use any of the commands on the ICE toolbar, or any ICE node in the preset manager in the ICE tree.
Load a sample scene from the \Data\XSI_Samples\Scenes\ICE folder in your Softimage installation directory. All Lagoa scenes has a Lagoa_ prefix.
You can quickly open this folder by choosing User Tools 
Browse Examples from the toolbar in the ICE Tree view.
Choose a complete model from the Particles Model Library Lagoa Particles menu on the ICE toolbar:
Create an emission of a certain type using the commands on the Particles Create Lagoa menu and the Deform Simulate menu on the ICE toolbar — see Lagoa Particle Effects and Deforming Geometry Using Lagoa Simulations for more information.
Set up your own Lagoa effect from scratch by using the nodes found on the Tasks > Lagoa tab in the preset manager in the ICE tree view.
See Creating a Lagoa Effect from Scratch for the nodes that you need to create a Lagoa simulation.
See Task Tab - Lagoa (Fluids and Deforms) for a description of each Lagoa node.
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