HOW DO I PAINT AN EXISTING INFRASTRUCTURE USING VRAYDISTANCETEX?
3Dartvision, Northumberland, UK
As an architectural visualiser I have been asked to work on many images taken from an aerial viewpoint. Projects like these will likely include an entirely new proposed development being merged into an existing infrastructure.
Traditionally images like this are often created by merging a virtual 3D model into an existing photograph. However, there may be many physical restrictions in obtaining a good photographic base shot, especially in the UK where the likelihood of a nice sunny day is pretty remote too. So, it isn’t always possible to obtain that perfect photograph into which your virtual model can be merged.
For those reasons I find I can often get a better result by building the entire existing and proposed infrastructure inside my computer, and from that point set up the perfect standpoint and environmental settings for my image.
Using Google and Street View, I start by building a library of the existing objects, such as road signs, litter bins, benches, lamp posts and so on, all simply modelled as low-polygon objects and with textures applied from on-site photography and Google references.
Once everything has been built and put into position, the entire scene (both proposed and existing development) can then be set up under one single
environment, resulting (hopefully) in an overall convincing image.
The new and existing infrastructure can often be a maze of complex winding roads, paths and grassed borders. At first this may seem a little daunting in the task ahead of creating and applying tricky mapping coordinates, but then there is a simpler way to approach this task.
V-ray has a very useful texturing tool named Vraydistancetex. This can be used to texture areas intersected by selected objects. This will produce a texture that will then fade away over a given distance from the intersecting object.
I like to use composites of this texturing tool when it comes to painting in road surfaces and road lines, where some objects might cause a subtle smudge and others a hard-edged graphic.
In this particular model here the road surface is a single-plane polygon object that has the new Vraydistancetex composite applied.
The intercepting objects are made non-renderable in their Object Properties dialogue such that their existence in the scene is purely as a texture generator with the Vraydistancetex material.
Commercial architectural visualisation work by 3dartvision commissioned by lidl UK for a new store in Hull