JuWeiFan
Wang
FX Artist
Week1 Height Field
Update: 6/12/23
Base on the preview, I recreate the Height Field, To add a sense of depth and make the mountain look more three-dimensional. also scale up the height field.
Based on
new sketch
old
new
Process Part 1
Basic shape
Main mountain
left mountain
main mountain clip
right mountain
Front Part
blur Junction
River bed strike
This river channel needs to look more natural
After Adjustment
Height Field Overview
Process Part 2
Detail Create
base on the height field I create, I add the big scale noise and small scale noise on the red part to give the height field detail.
height mask noise
big scale noise
small scale noise
Between the main mountain and the other mountain is not linked well, So I use the slump node to make transition more natural
there has two parts I want it much more higher. So I create another height field and use the height field layer to add to the original height field.
after make these two parts higher, the ridge become very sharp, I use the height field blur
Next step I base on the height to give the height field a mask by feature(after test the height from 0.5-35), and then I want make the noise have range which make the detail more diverse, I add other height field mask. after that I create another height field use the height field layer to add to the original one.
the ridge still little bit high, So I reshape that.
For me the right mountain are too many peaks, I plan to lose one
right-front part look like too regular,So I made an elliptical object to make a transition between two places
Before add erode, it need add other detail make the height field look like a really mountain.(distort node)
Compare
Erode I choose the 12th frame
After erode I think the foot of the main mountain need adjust， I want that a little bit lower.
Paint
Noise
Distort
Erode Second Time by feature(23.1-49.8)
Cause the main mountain I don't wanna change too much. This erode is for detail and make the lower place looks nature.
Final result
Mountain Size (original)
Mountain Size( Proportional Scaling down 10 times and convert to geo)
Bibliography
Erode
CiteSeerX (psu.edu)（Fast Hydraulic and Thermal Erosion on the GPU）
HeightField Erode (sidefx.com)
Height Field
(304) SideFX Houdini - Master Heightfields in 20min - YouTube
HeightField Layer (sidefx.com)
HeightField Mask by Feature (sidefx.com)
Reference
Next Week
Next week I will start the height field texture
If there's still time stone/tree/grass model as well.