Related notes: [[DTA]]

Projects

Single source of truth. One place to keep data / docks / bugs
Create libraries - Build modular asset files. Keep them in USD
Iterative pipeline are better because you have more chances to do something good.
Iterate faster - Simplicity > speed > quality > innovation
tactical > operational > strategic goals

Startup config:

Paths:
- Project / Job paths and dependences
Scale:
- set up scale and orient (ie: forward axis)
- pivot & transform for: copy to points / bake by parts separation. (rest)
Names
- divide to parts textures: by type / material name
Shaders
- Texel density
- second uv / shader usage
Time:
- FPS rate in software’s
- Sub steps / Sub time in solvers

Bottlenecks:

Switching paradigms (tools and workflows). Exporting / Importing files
Not standardized naming convention / scale …

Environment

$JOB/ - setup on /Content/ folder to access global HDA folder
$HIP/
- $HIPNAME.hip - Main file
- /out/ - Exports
  - /`opname("..")`/
    - /`details(0,'name')`/
      - /high/ - Z-brush meshes
        
        $OS.ztl - Tool (ctrl shift T)
      - /mat/ - marmoset
        
        Name.tga
        
        marmo..tbscene
      - $OS_lod0.fbx - Export final LOD 0
      - $OS_hi_proxy .fbx - Proxy for sculpt
      - $OS_hi .fbx - Hi for bake
      - $OS_lo.fbx - Lo for bake
      - $OS_lo_cage.fbx - cage for bake
- /cache/ or
  - `opname("..")`/
    - /proxy/ - Saved obj for other software
    - /cache/ - Caches. (step in asset process that can be recreated)
    - /temp/- Temp cache
    - /bake/ - Bake if from Houdini
    - /mat/ - Material / Marmoset
- /hda/ - HDA - (Better to keep hda’s in JOB/HDA/… folder)
- /src/ - Sources
  - Gaea
  - Scans
- /img/ - Renders and
- /old/
- ref.pur - References

PARTS OF MESH VERSION OF ASSET detail name Normal Divide - Clean Mehs:

Clean SOP helps Clean attributes:
Vertex: uv N
Point: boneCapture
Primitive: fbx_material_name name
Detail: name
s@nameprim = assetName
s@nameprim = UCX_assetName_00

Suffixes

[NAME] _ [part] [subpart] _ [_scele (tiny/small)] _ [version] _ [verison low/mid/... ] AssetA1_small_V1_lo001

Mesh Parts
- A B C D
Version
- V1_001
Maps Channels
- cd diffuse (2.2) / albedo
- a opacity a / alpha (fill)
- rg roughness
- sc specular
- me metallic
- nm normal / wn worldnormal
- ao ao (2.2) / bn bent normal
- th thickness
- cu curvature, cv cavity
- h height (range EXR)
- p position / wp world position
- id material id
- m1 mask
  Houdini

FBX export: $HIP/out/`opname("..")`/`details(0,'name')`/$OS.fbx velum I/O / COPtextures

Convert

H to Reality capture: x:+90 y:+90 to fbx.
ZBrush vs Houdini: +X in zbrush = -x in houdini

	Hand / DIR	Vector conversion formula	Quaternion conversion formula
Houdini, Maya, Substance, Modo, Godot, Marmoset, Open GL	R, Y-Up X>Y>Z	XYZ	XYZW
3ds Max, Blender, CryEngine, Auto Cad, Source, SketchUp	R, Z-Up Z>Y>X	X,-Z,Y	X,-Z,Y,W
Unity, ZBrush, Cinema4D. LightWave, Direct X	L, Y-up Y>Z>X	-X,Y,Z	X,-Y,-Z,W
Unreal	L, Z-up Z>X>Y	X,Z,Y	-X, -Z,-Y,W

GENERAL

Houdini attributes

Base

v@N (vert) -
@P, v@rest, v@Cd, i@id, @Alpha (point)

Material

s@shop_materialpath (prim) - Static FBX export. (only material parameters of those belonging to the /nodes/shop/principledshader shader are recognized)
s@fbx_material_name (prim) - Skeletal FBX
s@shop_materialpath (prim)
- Unreal: Material name. s@unreal_material
- Painter: Textures set cannot paint across different meshes in painter
- Zbrush: ??Polypaint ?? groups / colors < mask in painter

Manage

s@name (prim) joints names, differentiate parts ! (( (points): RBD same name = same object. “piece*”))
- Zbrush: Subtool
- Painter: Separated obj in painter Bake by mesh // - @name (prim) - mesh name ! can bake by mesh name !!!
- Unreal - s@name (prim) = UCX_assetName_00
i@class (prim) - , reserved to connectivity // connectivity / delete small pieces / nodes.
i@id (point)- particles, ctrl points for animation
s@tag - string in new scatter, tree
i@variation - copy to point / new scatter

v@uv (vert)
v@uv1 (vert)
i@udim=1001; (prim)
i@island=3; (prim)

Unreal

s@unreal_input_mesh_name (prim)
i@unreal_nanite_enabled = 1 (detail)
s@unreal_material (prim)

Character FBX

@boneCapture (point) on the skin geometry - defines the skinning weights.
@clipinfo (point) Current animation range and sample rate as well as the original animation range and sample rate of the imported animation.
s@name (point) - unique name across all points used for identification. (only used if the path point is missing).
@path (point) hierarchical path of FBX node that corresponds to the point. It is created when FBX files are imported by the FBX Animation Import or FBX Character Import nodes. This path is used to identify where to export the point transforms.
@scaleinheritance (point) specifies the scaling behavior when performing local transformations. See combinelocaltransform and extractlocaltransform
@transform (point) 3×3 matrixworld transform for the point. While the world position of the point is still P, this transform encodes the world transform’s rotation, scale, and shear components.

Name form detail attribute:	$HIP/obj/`opname("..")`/out/`details(0,'name')`.fbx
offset 0010-0260	$HIP/name.`padzero(4,$F-10)`.png
range loop 0000-0250	$HIP/name.`padzero(4,$F%251)`.png
range loop 0050-0300	$HIP/name.`padzero(4,($F-50)%251+50)`.png
hold first	$HIP/name.`padzero(4,min($F,250)`.png
hold last	$HIP/name.`padzero(4,max($F,1)`.png
clamp	$HIP/name.`padzero(4,clamp($F,1,250))`.png
UDIM suffix	`chs("udimsuffix")`

Houdini nodes override

paths to files

I/O

How convert units and axies work with in H and U

Collision

Sop level

s@nameprim = assetName
s@nameprim = UCX_assetName_00
Object level
UCX_* - from houdini need to be in separated containers named UCX_nameOfGeoContainer. - object level (make container !!! and ROPnet > fbx)

Houdini Import

Character FBX

SOP Character FBX Import - keeps textures hierarchies blendshapes cameras
SOP File - fastest
Labs FBX - slow like file menu import

Gaea

to HOudini » .exr / .png (raw dont work as heights)

Painter

single texture sets !!!!!! with multiple materials https://youtu.be/KbP7Pp2UeR4?t=975
maski / vertex color ?
- maski
- bazowy kolor ??? raczej niepotrzebny

Hou to painter

UDIMS

tile within same

Substance

(*.spexp - E:\Documents\Allegorithmic\Substance Painter\shelf\export-presets)

Workflow:

Subtool 1 to nazwa główna pliku. subtool = file name

Export

Zplugins>FBXExport>. Export polygroups as mats.
Use GoZ!

ZBrush

Marmoset

Zbrush groups ???? HOW TO ???

Unreal

Unreal Import

	Default	Adam def	VA3		SK	PP2
Skeletal Mesh	-	-			On	-
Generate Missing Collision	v	?				-
Staticm MeshLODGroup		-				-
Vert Color	Ignore	Repleace	Repleace			Repleace
Remove Degenerates	v	v		x		-
Building Reversed Index Buffer	v	v		x		-
Generate Lightmap UVs	v	-				-
One Convex Hull per UCX	v	?		x		-
Combine Meshes	-			x		-
Transform Vertex to Absolut	v	???	On	x		?
Import Mesh LOD’s			depending on Houdini	-		-
Normal Import	Import N		Import N & Tang	Import N		Import N
Normal Generation	Mikk					-
Compute Weighted Normal	v			x		-
.
Transform	ident	ident				-
.
Convert Scene	v		On	x		On
Force Front XAxis	-					x
Convert Scene to Unit	-					-
Override Full Name	v		On	x		-
.
Material		-				-
Reorder mat to fbx	v		On			-

with skeleton - update skeleton reference pose - !!!!!!!!! important

Speed Tree

Configs

Houdini

Windows: C:\Users\username\Documents\houdini20.0 / C:\Documents\houdini20.0
OSX: ~/Library/Preferences/houdini/houdini20.0
Linux: $HOME/houdini20.0

Documents directory:

Desktop /desktop/AB.desk
Radial menu /radialmenu/ABModeling.radialmenu
theme /config/theme.hcs / inc » ZEN
color palete /config/colors.def
Recipies /otls/Recipes.hda

Inside Houdini

Menu options
- default handle aligment: World
- standard tumblig wievport
- secure selection off
Presets/Sops:
- cachce node: / path / dont override $OS with name
add paths to ‘Open file dialog’
add ‘render flipbook’ outpout: $HIP/$HIPNAME.jpg

Software directory:

123.py - default scene change

Environment

.env file
PDG_IMAGEMAGICK=/Applications/ImageMagick-7.0.8/bin/magick
PDG_FFMPEG= ""
CURVES IN EDITOR: python2.7libs fcurves.py 3 files / HSITE = ""
HOUDINI_EXTERNAL_HELP_BROWSER = 1

Packages

newer is /houdini19.0/packages/ folder - can be many files
- create .json file

DefaultScene

C:\Program Files\Side Effects Software\Houdini 19.5.534\houdini\scripts
Houdini 19.5.xxx/houdini/scripts/123.cmd or create: 123.py with python code: hou.hipFile.merge("..path/to/default/file/file.hip") hou.hipFile.merge("//moth/library/houdini/DefaultScene.hiplc")

HQueque

Instal
- HQueque Client
- HQueque Server
go to services > properties: login to network
go to localhost:5000
Share forlder
- folder properties: advance sharing, - permitions:
hqserver.ini
- to jest config, can send mails, folder configs
licencje
Houdini
- Taget HFS
- $HQROOT - basic path

Linux setup

Run Houdini on ubuntu

source houdini_setup The Houdini 19.0.589 environment has been initialized.
export LD_PRELOAD="/lib/x86_64-linux-gnu/libc_malloc_debug.so.0"
houdini

sudo apt update
sudo apt install ffmpeg
sudo apt install imagemagick

P4

Accept Source Get clean file from repo/depo, discarding your changes (workspace).
Accept Target Accepts the file local (workspace), overwriting repo/depo.

Foobar

https://wiki.hydrogenaudio.org/index.php?title=Foobar2000:Title_Formatting_Reference https://columns-ui.readthedocs.io/en/v3.0.0-beta.2/playlist-view/title-formatting.html file:///C:/Program%20Files/foobar2000/doc/titleformat_help.html

Atom

ctrl + t = search file names
ctrl + f = search
ctrl + shift + f = in whole project
ctrl + / = show tree

http://fxnomemo.blogspot.com/2021/04/houdini-workflow.html

Using file cache with rop geo TOP. with sequences choose automatic

Naming Conventions

camelCase, CapitalCamelCase - in pascal
flatcase
caterpillar-case - css
snake_case - c
MACRO_CASE, UPPER_CASE - (C preprocessor macros)
COBOL-CASE, TRAIN-CASE -
python vars
code names (hard to see space)
Use _ to separate parameters in names.

Syntax - red green yellow
Semantic - green=go, red=stop
Paradigm - If red and no traffic then allowed to go

code = syntax / structuring / understand = machinery

Pivot Painter 2. hierarchy:

2 groups ?

POINTS:

point names
N GEO:
point name
uv
group: branch
group: leaf

==============

OLD

|Exports, Cache||
|---|---|
| Maps Bake |```$HIP/`opname("..")`/export/bake/${OS}/${OS}_$(CHANNEL).tga``` |   
|**Game**|
|TextureSheet / MorionVector seqence | ```$HIP/`opname("..")`/export/bake/${OS}_sequence/``` |      
|TextureSheet / MorionVector | ```$HIP/`opname("..")`/export/bake/``` |  
|Heightfields | ```$HIP/`opname("..")`/export/heightfields/$OS/``` |
|Vertex Anims ROP |```$HIP/`opname("../..")`/export/vat_$OS``` |       
|Niagara | ``` $HIP/`opname("..")`/export/niagara/$OS.hbjson ``` |
|Impostors| ```$HIP/`opname("..")`/export/${OS}_impostor/sequence/${OS}.$F4.exr``` |
|Impostors| ```$HIP/`opname("..")`/export/${OS}_impostor/${OS}_beauty.exr``` |
|**COP**|
|COP image | ```$HIP/`opname("..")`_cop/${OS}.exr```
|Embeded assets| opdef:/Sop/...

- `$JOB/` - setup on /Content/ folder to access global HDA folder
- `$HIP/`
	- `$HIPNAME.hip` - Main file
	- `/out/` - Exports
		- ``` /`opname("..")`/ ```  
			- ```/`details(0,'name')`/```   
				- `$OS_lod0.fbx` - Export final  LOD  0
				- `$OS_hi_proxy .fbx` -  Proxy for sculpt 
				- `$OS.ztl` - Tool (ctrl shift T)  
				- `$OS_hi .fbx` - Hi for bake
				- `$OS_lo.fbx` -  Lo for bake
			    - `$OS_lo_cage.fbx` - cage for bake      
			    - `fileA.png` - Export    / in same folder as  spp/sbs   
			- ``` /marmoset/ ```  (easy to have export path with source file)
				- marmo..tbscene
				- marmo_nm.png
	- `/hou/`  or  
		- ``` `opname("..")`/ ``` 
			- `/high/` - Z-brush meshes
			- /proxy/ - Saved obj for other software
			- `/cache/` - Caches. (step in asset process that can be recreated) 
			- `/temp/`- Temp cache 
			- `/bake/` - Bake if from Houdini
			- `/mat/` - Material / Marmoset
	- `/hda/` - HDA - (Better to keep hda's in JOB/HDA/... folder)
	- `/src/` - Sources 
		- Gaea
		- Scans
	- `/img/` - Renders and 
	- `/old/`
	- `ref.pur` - References

Projects

Environment

Suffixes

Houdini

Convert

GENERAL

Houdini attributes

Houdini nodes override

I/O

Collision

Houdini Import

Character FBX

Gaea

Painter

Hou to painter

UDIMS

tile within same

Substance

ZBrush

Marmoset

Unreal

Unreal Import

Speed Tree

Configs

Houdini

HQueque

$HQROOT - basic path

Linux setup

Run Houdini on ubuntu

P4

Foobar

Atom

Naming Conventions

Pivot Painter 2. hierarchy:

==============