Shortest path network analysis, pedestrian modelling and moving agents around complex city scenes has always been a specialised domain. As regular readers will know we have always taken the view that game engines are arguably better suited to agent based modelling – especially in terms of pedestrian and transport than more traditional packages.
Agents in Unity
With a mix of Unity NavMesh and some simple Javascript it is possible to create a city wide navigation mesh. Below is out first example using agents to follow a target (viewable in 1080p):
We will be exploring this further over coming weeks…
One of the questions in modelling a ‘living city’ is how to combine aspects of agent based modelling for crowds, traffic simulation and 3D cities without a work flow that takes weeks and a high end graphics house.
Processing Output in Lumion
Using the intriguing P5 to Max script it is possible to control 3D Max via Processing and a local server connection, this opens up a raft of possibilities for visualisation and urban scenes based on real data.
As a quick example we used the default processing P5 scene and created the clip below, it also allowed us to test the various configurations for lighting and weather in Lumion:
We will be exploring the possibilities of Processing and 3D Max further over the coming weeks…
Flying Cities is a concept animation by Stefan Haberkorn – it is one of the best uses of Lumion we have seen so far. It goes beyond the normal architectural visualisation and makes good use of landscaping and volumetric clouds.
Lumion is one of the best rapid visualisation systems out there for architectural style rendering. Its ease of use and ability to create scenes complete with advanced sky and lighting effects make it perfect for urban visualisation. With the release of version 3 we thought we would take the free version for a test run.
Lumion 3 fbx Import
The scene below was created using a mix of CityEngine by ESRI and Autodesk’s 3D Studio Max, exported via .fbx. The movie took 8hrs to render at 1080p, 30 frames per second and depth of focus / advanced sky effects:
Lumion 3.0 has notably changed its watermarking on any output – the Lumion Free Not for Commercial Use is not easy to mistake, this is a change to the previous version that had a small banner in the top left hand corner. We can see the reasons why – the previous version could simply be cropped to take out the water mark – but as its on screen the whole time, even in the editor, it does make the work flow painful on the eyes.
With the addition of new video textures, updated sky effects, global illumination and new models Lumion is well worth a look…
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