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Agents in the City: First Steps to Crowd Based Architectual Modelling

By 3D Agents, 3D Max, Agent Based Modelling


Yesterday we posted about roads in 3d models and how small details begin to bring the 3d city to life. The same goes for pedestrians and modes of transport, in essence these objects populate the city and add a significant level of realism.

Crowd and transport simulation is at its roots down to ‘Agents’ or ‘Objects’ that are assigned a set of rules as to how to moves in relation to both the environment and other agents around them. 3D Studio Max has a built in ‘Crowd and Delegate’ system which can be used to assign behavior and therefore create realistic traffic of pedestrian systems in 3D space.

Our movie below displays our first tentative steps using the system to create an ‘Ant Like’ behavior on a surface:

Ok its far from a crowd in a city but the principle is there. We don’t often put up ‘early development’ movies but this should be an interesting learning curve for anyone wanting to populate a 3D City. At the same time as using 3D Max we are also using Crysis for realtime agent based modelling, more on that a little later…

If you would like to know more about Agents take a look at http://gisagents.blogspot.com/ – a blog written a mere two desks away from where we are currently sat…

LightUp: Realtime Lighting in SketchUp

By 3D Modelling, LightUp, SketchUp

LightUp is creating quite a stir in the SketchUp community and for good reason. The plugin allows realtime lighting inside of SketchUp which by the looks of it dramatically improves the look of models.

The two YouTube movies below provide a preview:

The difference in quality is notable and this is one to watch, a beta website is online with a demo promised in the coming days/weeks.

See http://www.light-up.co.uk for full details.

You can follow the discussion on LightUp at the Sketchucation forums.

Thanks to Pedro for sending us the links…

Road Networks: Bringing 3D Greeble Cities to Life

By 3D Max, 3D Modelling, 3DS Max, Crysis

Our Greeble City Tutorial provides a walk through on how to quickly and easily create a cityscape, complete with custom skyscrapers. Creating a city is all well and good but it is the fine details that brings a 3D city to life, the first of these is the road network.

Creating a road network in 3D Max is to be honest a tedious process but once they are in place complete with pavements (sidewalks) a basic render can begin to look more city like.

The three renders here are from our ‘City Road Pack’ which we will be uploading to TurboSquid or some other file sharing site free of charge. This should save anyone wanting to build a quick city having to go through the two day process of making roads. The pack will include a series of objects that will snap together to create a grid or path layout.

Soon as its ready to go we will put up a post, in the meantime if there are any other parts of cities that people would like to see let us know via the comment box.

We should also have a post on roads and agent based traffic simulation in Crysis later this week as well, the main Crysis tutorial has been delayed due to a ‘shadow bug’ in the latest build. Soon as this is fixed we will put the SketchUp/3D Max to Crysis tutorial online.

Maps and Stats: Visualisation with Google Docs

By google docs

Google’s Docs is something of a slow burner but it has notable potential for visualisation, especially for trends and basic mapping, such as the heat map illustrated above.

The YouTube movie below provides a 60 second introduction to the Google Spreadsheet API:

We will be looking at this closer in future posts as trend/map based visualisation is often too complicated for its own good, one thing Google does well is make things easy and that can only be a good thing…

See http://code.google.com/apis/visualization/ for examples and documentation.

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