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cabolt

Texturing tracer splines w/no geometry

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Hello all. Been a long time since posting on here, but have always found good solutions. We are doing a massive air flow animation for a warehouse. We are using thinking particles to generate streams of air and using mograph tracer to create the splines we want to texture. We are almost there but issue we are having is mapping the color along the spline with any level of accuracy.

We are using world mode to map the gradient on the particles/tracers paths, but cannot get it to work exactly how we want. Any solutions or ideas as an alternate? Due to the sheer volume of

particles we need to generate, we are trying to avoid using any geometry at all costs. We just want to be able to adjust the gradient along the tracer path so the air temp goes from cool blue to warm red at end of path.

 

Any help is much appreciated. scene file attached 

Air_flow_test.c4d

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Im only on R18 and couldn't see the trace initially. Still not quite sure how you want it to be, is it like either of the grabs below.

Deck

 

Screen Shot 2019-11-01 at 18.04.55.png

Screen Shot 2019-11-01 at 18.05.19.png

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  • The grab below is like 95 percent of the way there, but mapping blindly using the world mode and 3D gradient is atrocious. Very little control. We need the air to be cold about 3/4 of the way around the loop then start to turn red as it warms. Using the 3D linear mapping it is tough to map properly no angle which is what we need. We have only been able to get it to map vertical. Tried sphere and cylindrical as well. No bueno either way...

     

     

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  • Our settings...

    1623761792_ScreenShot2019-11-01at2_15_08PM.thumb.png.8734cdd84a02018ff46af8c09f5a05c4.png1753053603_ScreenShot2019-11-01at2_15_26PM.thumb.png.c1d644ab3ff1c4f80f0e9c9b6b935a08.png

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    I wondered if you could do it with the mograph colour shader and some effectors with fall off but can't seem to get that to work.

    Obviously two renders one entirely red and one entirely blue might allow you to have full control in post.

    Someone smarter than me will no doubt come up with a proper answer.

    Deck

     

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  • Thanks Deck. It's not an easy one...at least doesn't seem the way so far.

     

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