Color depending on height.

[Judicator]

Hi, guys.

Maybe you'll be able to help me. I need to create material, which would color the object, depending on it's height in a gradient style.
For example, I have a "mountain" of certain size and it's colored in green. When I make the mountain taller, additional colors start to appear, like yellow (in the middle) and red (on top).
Something like this http://upload.wikimedia.org/wikipedia/c ... ian_2d.png.
Also I should be able to define at which height the color starts to change.

Any idea on how to do this? Any help is appreciated.

[caledonian_tartan]

this is not the only solution, but works.

create a "color at vertices map" on your mountain and put this on its iceTree

the gradient works from 0 to 1.
so i use the rescale to compress the height into that range.
don't forget to change the Vertex_Color map to "Float (4 bytes)"

[Judicator]

That's exactly what I need.
But I don't seem to have "Color Attribute to CAV" node.

[caledonian_tartan]

here you go

[Judicator]

Thanx, now everything works!
Both links work, by the way ;]

Moderator edit: you're right,I removed my post to avoid confusion.
Seems to be a browser specific issue, another browser: no problem - HB

[Judicator]

One more question though. Everything is colored the way I want, but how to make it work, while using Shape Manager? The ICE Tree and Shape Manager don't like each other.
In this project, I'm simply animating few spikes growing from a single grid, using shape manager.

[caledonian_tartan]

i guess you need to place the ice tree above the shape operator inside the Operator Stack

[Judicator]

It was already above.
Maybe I'm doing something wrong. How do you animate proportional translation of object's points without using Shape Manager?

[NNois]

on a side note, you can consider to construct this in the render tree only.
there will be great advantage because he don't rely on the mesh... plus all your problems goes away

-take a "Vector State"(intersection point mode) -> he output a vector who is the position in space ;-)
-you plug that on a vector to scalar node and choose the "Y"
-you plug that on "change range" node it's the equivalent of the "rescale node on ice" the units are SI units
-plug that on a gradient node (the one with a scalar node input)
-done ;-)

tell me if you need a screenshot

[NNois]

here is one example independant from the topology

[Judicator]

Worked like a charm!!!! Thanx a lot!
And now you can tell me about that "Wireframe" node of yours

[NNois]

just the softimage "essential" shader pack http://www.binaryalchemy.de/

[Hirazi Blue]

Nice an clean, NNois.
Who would have thought? A non-ICE solution to a problem in this day and age!

[Bullit]

Wouldn't terrain shader work for this?

[Judicator]

I've tried it, but couldn't get it to work (never used it before). caledonian_tartan's way works just perfect though ;]