How to make a Landscape

Simple Guidline for Landscapes    
Don't read the second part before the first :))
I guess you are curious how to make materials, right? Ok. here is a simple guideline. Right now I'll show you only one material :( and that is cheen from Bhodinut's SLA shaders. If you don't have SLA you are not able to do the following. If you need Information on SLA you may look at the Maxon or Bhodinut homepage.
But now let us start. That's what cheen usually looks like, if you create a new cheen material :)
The most mighty points are of course the gradients and the Bumps (roughness) and partly the Diffuse channel. There are a lot of parameters, so to control them all might be difficult. One of the easiest things could be the gradient color :)
Turn off roughness for the moment.
Double click at the first slider and the color selector will open. Use the parameters on the right and add the color to the users colortable. Use this color as a base. Click on the next slider activate (click on) your color and make it a little bit darker. Add a slider (click under the gradient bar) use your color and make it even darker. Do so with the last slider.
Now change the Interpolation from cubic knot to linear. You notice the the little slider above the bar, representing the midpoints of interpolation. Move them a little bit (also the slider at the bottom) to get a picture as shown on the right. May be you like to play with it :).
Remember to click on the picture to enlarge.
For the diffuse parameters use the ones on the right. They are only slightly different from the standard settings but different settings might heavily change your material.
But now the most interresting thing, no:)
Yes, the roughness parameter. First use Stupl as a noise. Choose an octave of 15-20. The Scale should be around 12.000 till 24.000 (twentyfourthousand, yes). Choose amplitude between -500 and -1000 and a Delta between 0 and 20%.
Now you see nothing. To bad. Activate the checkboxes "Hard bum" and "Absolute". You can vary the roughness by not using "Absolute". If you work with an older version of SLA it might be different. It could be that only "Absolute" works fine. With V7 better use both parameters.
But that's not all (in addition you get a cutter and a nife and..;) You always wondered about "Color"? Now you'll use it. May be you first want to use your material and render a picture to see what is different?

Now change the Color (which should be black) to white as seen on the right. Additionally change the roughness intensity to -200. And that's it. You might want to play with these factors. Do it, gain experience with it and have fun. Try to change the color too.

One last point. If you attache your newly created material to an object be aware of the scale. The landscape on the right was done by using the bitmap of the "Relief" Tutorial. The size is 1200 x 1200 units. Now, if you don't mind, some examples on scale. On the right the standard 100x100 is used.
Scale 5000x5000x5000 Scale 25x25x25 Scale 5x5x5

If you think that your material doesn't look good, try to play with the gradient color. The color is very might and hard to handle. Slight changes can kill your material. And the lightning, uhh. But that another story ;)

That's how it looks like with a good lightning from the ground. So far for that. Have fun ;)


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