This particle renderer for Cinema 4D is a serious piece of kit

Thinkbox Software opens the door to Cinema 4D artists with the latest release of its powerful particle rendering plugin, Krakatoa.

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Krakatoa for Cinema 4D

Krakatoa is Thinkbox Software's particle renderer, designed to take
an existing particle field and use it to produce wispy, ethereal forms, like plasma or gaseous fluids. The key thing with Krakatoa is that the particles react realistically to light, so not only does it produce beautiful, shadowed volumetric results, but you also get precise control over the look simply by moving and tweaking your lights.

Krakatoa works with a range of sources: a mesh object, C4D's native emitter and Thinking Particle systems, X-Particles from Insydium, .bin files from RealFlow and .prt files from other versions of Krakatoa. You can use it to render TurbulenceFD particle flow, and there's a built-in fractal generator.

Particles can be exported to a Krakatoa .prt cache, with information baked in, such as colour, lighting, density and so on. The sequence can then be imported using the PRT Loader and rendered, or shared with other Krakatoa artists. The plug-in works much more quickly and smoothly with its native cache files, so it's well worth taking the time to generate them.

Krakatoa for Cinema 4D

Here an X-Particles flow is advected by a TurbulenceFD field,and lit by two point lights. By altering the Lighting and Drawing passes you can produce different results

When rendering with Krakatoa, you need to understand the way particles react to light sources. You have control over their colour, emission, absorption and density values, as well the way they're rendered, and it's the cumulative effect that gives the particle cloud its desired look.

Krakatoa can render with multi-pass motion blur and depth of field, and as well as point rendering it also provides a voxel rendering system, which helps to get a softer, smokier result.

Krakatoa takes time to learn and is unforgiving at first, with an almost bewildering level of control

Krakatoa is a blazingly quick renderer, but to get the right results you often need to feed it with very large amounts of particles. If you need more you can get Krakatoa to repopulate the particle field, adding additional points. And while this is fine for lower numbers of particles it becomes unwieldy (and very slow) with larger systems.

Better then to use Krakatoa's partitioning, which saves out the same particle field with slightly randomised values. These are stored as separate .prt sequences and then loaded in and rendered en masse.

Krakatoa is a beast of a plug-in. It takes time to learn and is unforgiving at first, with an almost bewildering level of control. It's a serious piece of software at a serious price, but for studios that have looked on enviously at the work being created in 3ds Max and Maya, now you too can have a slice of the action.

Words: Steve Jarratt

Steve Jarratt has been in CG for many years. He's a regular contributor to 3D World and edited the magazine for two years. This article originally appeared in 3D World magazine issue 183 - on sale now!

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