To get some of the crowds, the YPGTTO team developed a plugin for preparing animations for use in large crowds. In order to do this, each animation cycle was processed into an alembic cache, where it would be brought in and looped. A random generator allowed for the random application of colour and an animation offset was set for each citizen to give a bit of randomness to what stage of movement each of the population were in.
The most time consuming part, once the caches had been created was to insert the crowds into the scene and have them follow a path, this was slightly tricky due to the meandering nature of the highways which went up and down as well as curving around.
For a first test however, this turned out well. The crowd feels reasonably organic and there are plenty present to demonstrate the scope of the population within the Kingdom of Sound
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