Rendering Sparks

[AirChrome09]

I need to render some sparks for an animation. The sparks animation it's a matter of a couple of frames, but particles can't be rendered "normally" in Yafaray right?

Ideas?

[Hyperspace]

Particles should render in in Yafaray *IF* each particle has geometry. (using the 'dupliVerts' option) Then let the sparks have a material with a high 'emit' value.

[AirChrome09]

Particles should render in in Yafaray *IF* each particle has geometry. (using the 'dupliVerts' option) Then let the sparks have a material with a high 'emit' value.

Can you post an example of the settings that I should have? It renders only the luminous plane.

sparksyafa.png (5.29 KiB) Viewed 367 times

[condar]

Particles should render in in Yafaray *IF* each particle has geometry. (using the 'dupliVerts' option) Then let the sparks have a material with a high 'emit' value.

Can you post an example of the settings that I should have? It renders only the luminous plane.

sparksyafa.png

an example with Grass
http://www.yafaray.org/documentation/tu ... particles1

[AirChrome09]

an example with Grass
http://www.yafaray.org/documentation/tu ... particles1

Yeah, i viewed it but, the sparks are moving, not still, and are semi-transparent and emit a bit of light. How can I make an Halo material in Yafaray?

[condar]

an example with Grass
http://www.yafaray.org/documentation/tu ... particles1

Yeah, i viewed it but, the sparks are moving, not still, and are semi-transparent and emit a bit of light. How can I make an Halo material in Yafaray?

Halo material can be made with Volumetrics but you will need longer render times

[AirChrome09]

Halo material can be made with Volumetrics but you will need longer render times

But those are lamps. May I use lamps for particles?

[condar]

Halo material can be made with Volumetrics but you will need longer render times

But those are lamps. May I use lamps for particles?

no. with lamps and volumetrics you can made a 'Halo like' effect. that's all
For particles an emiter material is the best choice

[loh]

But those are lamps. May I use lamps for particles?

yes you can just set visualization to Object and enter a lamp as the object. The lamp you set and all its yafaray settings will be instanced at each particle.

However this renders very slowly with the volumetrics and is very limited in what halo effect you can achieve. I suggest that you use this alternative work around:
Render with point lights as your particles in yafaray with no volumetrics to get the proper light falling on your non spark objects.
Render the sparks in blender with all your objects and background as black.
Composite the parks onto the yafaray image.

This will give you realistic lighting form the sparks and realistic image from yafaray. It will also let you use the blender halo system to get the sparks to look like you want them to and should be very easy in the compositing. (a simple 'add' will do)