Loop group example

This sample project shows usage of LoopGroup and ConditionalGate.

Loop group

LoopGroup node is a node group which run its content multiple times in one simulation step. You set the number of iterations in node's Iterations parameter.

You can also set node's LoopType parameter to one of following values:

• Normal - group loops only those tasks, which have OneShot set to False (which is default)
• ALL - group loops all the tasks inside

Conditional gate

Conditional gate is designed for usage together with LoopGroup. It takes two inputs and sends them to its output according to its Gate Inputs task Iteration Threshold parameter.

ConditionalGate internally knows which LoopGroup iteration is running right now and it outputs the iteration number to its Iteration output.

If the actual iteration number is lower or equal to Iteration Threshold parameter, InputA is copied to Output. Otherwise InputB is copied to Output. Iteration number is resetted each simulation step.

Example usage

Brain: BrainSimulatorSampleProjects\LoopGroup\loopgroupexample.brain

Let's say you want have an image and want to blur it. But Blur which is provided by Filter2D node is not strong enough for you and you decide to blur image multiple times. You can connect multiple Filter2D nodes in series or you can use LoopGroup and ConditionalGate as in following image