normalizing density

Krakatoa for 3ds Max
1

hi,

can someone help me create a magmaflow (for kraka 2 or 1.6) that will help control the density

i have a fume advected partition, there is lots of detail in it, but with certain densities it only highlights a certain range, if i want the mid highlights to be bright white, then i have other parts which are TOO dense and overly bright, at the mid bottom spectrum i have some details , that if i would adjust the density to see these, the midand upper would completely blow out,

how can i create a magmaflow that gives me control to lower the density on the upper, and increase density for the mid-lower ranges…

of course, i dont want all particles regions to have same density, preferabbly this magmaflow would allow to @clip@ out the lower densitys to not even make visible, and even similar with the upper high range,

where most of the particles have accumulated are the regions that are blown out, and the ones that are most seperate of course are the low ranges, id like to make the density for these 2 ranges as low as possible and work with the low mids to high mids in a way that i can control and “extract” the most important information

any suggestions?

thanks

2

Curve Control.

InputChannel Density --> Curve Operator --> Output Density

Note that the Curve in Magma 2 can have an arbitrary X range (not just 0.0 to 1.0), so you can have a curve that boosts lower densities while suppressing the higher ones, or just keeping them the same by outputting Y=1.0 in those areas.

Alternatively, you can use a set of Clamp and Power operators to prevent values from going lower or higher than specified limits, and change the curvature of the curve to an exponential function.

In the tutorial about Krakatoa, RealFlow and Frost, I used a Curve control to make the particles visible (via Density) based on the Magnitude of the Velocity.
thinkboxsoftware.com/krakato … -and-frost
Your case is simpler, since you just have to input the Density and remap it to the values you want.

3

thanks bobo