Help me, particle flow(or krakatoa) texture mapping

#1

I want to emit to the particles with a texture based color at starting position.

How can I this? somebody answer the question plz

#2

Have a look at Boboland.

#3

That’s a very hacked way for acquiring surface data. I would not use it :wink:

For texture mapping, there are several simpler ways:

*In Max 2009 + Extension or 2010, there is a Box #1 operator for stealing Texture Coordinates from a geometry object’s closest point. (MappingObject, I think).

*In Box #3, it is rather easy to wire together a DataOp that does the same, but faster.

*In Krakatoa 1.1.2, we ship an operator called KrakatoaGeometryLookup which can grab Texture coordinates from any channel of the closest point of a selected object into any UV channel. It is a couple of times faster than the Box #3 option in most cases.

*On my PFlow Scripting DVD, I demonstrate the “Hijaking” of a Speed By Surface operator for acquiring surface data. There, it grabs the color of the closest point and not the UVs, so it is similar but much faster than the tutorial posted here.

#4

I found your used script operator of PF teapot scene for texture based emission from google.

But it is too heavy to emission a lot of particles. and I followed your krakatoa tutorial for

projection map ‘http://djlee88.egloos.com/9414654’ But color channel did not bring the textures

color When I after baked the PF and loaded a krakatoa prt files on PF window. So I failed.

If you know a tutorial using PF tools box#1 and box#3 for texture based emssion, please show

me the website. I set them on 3ds max9.

#5

The camera projection can be achieved in several ways, some of which were posted here a while ago:
http://www.franticfilms.com/software/support/krakatoa/camera_mapping_particles_using_dataflow.php

But if you want to grab the color of the surface, you should be using one of the other methods I mentioned in this thread, especially the one from my PFlow Script Show Act 2 DVD.
https://www.cg-academy.net/es_catalog/product_info.php?products_id=73

If you can live with just the UVs, use the Krakatoa Geometry Lookup operator.

#6

Just FYI, we discovered a bug in the current build 1.1.2.32992 which has been long fixed in our internal builds but somehow never made it to the public (so obviously I did not experience the problem while developing the tutorial). We will see if we can release a fix for that next week.

#7

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