Brain II

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[[start:knowledge|<< Back]]
====== Blender ======
1 unit = 1m\\
[[https://github.com/Victor-IX/Blender-Launcher-V2|Blender Launcher]]\\
[[https://hollisbrown.github.io/blendershortcuts/|Blender Shortcuts]]
===== Shortcuts =====
Manual adjustments
Ctrl , preferences

==== General ====
^ Action                                           ^ Shortcut                 ^
| Property box                                     | F9                       |
| Apply to all selected elements                   | hold Alt                 |
| Frame selected                                   | . (numpad)               |
| Frame camera                                     | 0 (numpad)               |
| Set selected item as active viewpoint            | Ctrl 0                   |
| Set active camera to view                        | Ctrl Alt 0               |
| Transfrom all selected objects                   | Alt (hold)               |
| Join objects                                     | Ctrl j                   |
| Move to collection                               | M                        |
| Link to collection                               | Shift M                  |
| Radial view selection menu                       | `                        |
| Scale around z axis                              | Alt s                    |
| Cursor/view to center                            | Shift c                  |
| Place curcor                                     | Shift right mouseclick   |
| Drag viewport/window                             | Shift middle mouse       |
| Zoom viewport/window                             | Ctrl middle mouse        |
| Hide selected                                    | h                        |
| Isolate selected                                 | Shift h                  |
| Unhide all                                       | Alt h                    |
| Quick favorites                                  | q                        |
| Snap to orthographic views                       | hold Alt while rotating  |
| Toggle quad view (orthographic and perspective)  | Ctrl Alt q               |
| Batch rename                                     | Ctrl f2                  |

==== Rendering ====
^ Action                ^ Shortcut    ^
| Render frame          | F12         |
| Render sequence       | Ctrl F12    |
| Render region         | Ctrl b      |
| Delete render region  | Ctrl Alt b  |

==== Modeling ====
^ Action                                                    ^ Shortcut                                                                      ^
| Extrude point, edge or poly                               | e                                                                             |
| Select edge/poly loop                                     | Alt click (the loop will follow the direction relative to where you clicked)  |
| Rotate allong edges                                       | Ctrl Shift Alt s                                                              |
| Even mode when doing loop cut                             | e                                                                             |
| Subdivide (combine with Auto Smooth for best experience)  | Ctrl 1,2,3,... or Ctrl 0 to reset to original mesh                            |
| Snap to points with ruler                                 | Hold Ctrl                                                                     |
| Scale along normals                                       | Alt s                                                                         |
| Measure thickness with ruler                              | Hold Shift                                                                    |
| Mesure angle with ruler                                   | Click in the middle                                                           |
| Delete a ruler                                            | x                                                                             |
| Inset                                                     | i                                                                             |
| Toggle constraint to outer edge while insetting           | i + b                                                                         |

==== Sculpting ====
^ Action                                        ^ Shortcut                                 ^
| Perspective/orthographic                      | numpad 5                                 |
| Rescale brush                                 | f                                        |
| Intensity brush                               | Shift f                                  |
| Invert brush                                  | hold Ctrl                                |
| Smooth                                        | Shift                                    |
| Stroke method                                 | e                                        |
| Dyntopo                                       | Ctrl d                                   |
| Invert Masked                                 | Alt i                                    |
| Undo mask                                     | Alt m                                    |
| <color rgb(100%,20%,20%)>Hide masked</color>  | <color rgb(100%,20%,20%)>Ctrl h</color>  |
| Unhide all                                    | h                                        |
| Lasso mask                                    | Ctrl Shift lmb                           |
| box mask                                      | b                                        |

==== Rigging ====
^ Action                                ^ Shortcut     ^ 
| Set pivot point                       | .            |

==== Animation ====
^ Action                                ^ Shortcut     ^ 
| Set keyframe                          | i            |

==== Unwrapping ====
^ Action                                ^ Shortcut     ^ 
| Select UV island                      | i            |

==== Shading ====
^ Action                    ^ Shortcut               ^
| Preview shader            | Ctrl Shift click       |
| Principled texture setup  | Ctrl Shift t           |
| Cut node wires            | Ctrl right-click drag  |



==== Tracking ====
^ Action                ^ Shortcut    ^
| Create new tracker    | Ctrl click  |
| Show search box       | Alt s       |
| Track manually        | Alt arrows  |
| Lock view to tracker  | l           |
| Start auto tracker    | Ctrl t      |
| Lock tracker          | Ctrl l      |

==== Boxcutter/Hardops ====
==== Add-on Specific ====
Install Hardops first, then Boxcutter. This way Boxcutter is the first mode you access when pressing Alt w
^ Action                              ^ Shortcut                          ^
^ Hardops/Boxcutter                                                      ||
| Toggle between Hardops & Boxcutter  | Alt w                             |
| Viewport settings                   | Alt v                             |
| Align boxcutter                     | Shift v                           |
| Hardops menu                        | q                                 |
| Radial hardops menu                 | Shift q                           |
| Box cutter menu/hopstools           | d                                 |
| HOps helper                         | Ctrl `                            |
| Hold shift when releasing cutter    | Displays and selects your cutter  |
| Mirror                              | Alt x                             |
| Allign edges                        | Alt a                             |
^ MaterialIQ                                                             ||
| Toggle asset library                | press e over any area             |

===== Add-on's =====

<note important>
MaterialQ can cause problems with commonly used Blender shortcuts, like the mode switching (1,2,3) and a MachineTools shortcut "Alt X"
</note>
^ Name                                                                                                                   ^ Description                                                                          ^
| [[https://extensions.blender.org/add-ons/looptools/|Loop tools]]                                                       | Mesh modelling toolkit. Several tools to aid modelling.                              |
| [[https://extensions.blender.org/add-ons/edit-mesh-tools/|Edit Mesh Tools]]                                            | Mesh modelling toolkit. Several tools to aid modelling.                              |
| [[https://docs.blender.org/manual/en/latest/addons/node/node_wrangler.html|Node wrangler]]                             | Improve the node experience by a lot                                                 |
| [[https://blendermarket.com/products/machin3tools|MACHIN3tools]]                                                       | MACHIN3tools                                                                         |
| [[https://machin3.io/CURVEmachine/|CURVEmachine]]                                                                      | Makes POLY Curve editing more flexible                                               |
| [[https://www.blendermarket.com/products/hard-ops--boxcutter-ultimate-bundle|Hard Ops / Boxcutter]]                    | Hard Ops / Boxcutter                                                                 |
| [[https://extensions.blender.org/add-ons/edgeflow/|Edge Flow]]                                                         | Helps adjusting mesh geometry to curved surfaces.                                    |
| [[https://extensions.blender.org/add-ons/grabdoc/|GrabDoc]]                                                            | A trim & tileable baker for Blender.                                                 |
| [[https://extensions.blender.org/add-ons/quick-rigid/|Quick Rigid]]                                                    | Easy access to the most used rigid body settings.                                    |
| [[https://polyhaven.com/plugins/blender|Poly Haven]]                                                                   | Asset library integration of all polyhaven assets                                    |
| [[https://blendermarket.com/products/materialiq|Materialiq]]                                                           | Material library                                                                     |
| [[https://blendermarket.com/products/ezlattice-blender-add-on-for-deformingreshaping-models-quickly?ref=2|EZLattice]]  | Lattice companion for Blender.                                                       |
| [[http://www.jpfep.net/pages/addroutes/|AddRoutes]]                                                                    | Work with MIDI and OSC signals in Blender                                            |
| [[https://coreycorza.gumroad.com/l/pinvertsaddon|PinVerts]]                                                            | Pin unselected vertices for Proportional Editing to aid in modelling                 |
| [[https://blendermarket.com/products/shot-manager|Shot manager]]                                                       | Render manager                                                                       |
| [[https://github.com/stuffmatic/fSpy-Blender|fSpy]]                                                                    | Open source still image camera matching                                              |
| [[https://keentools.io/products/geotracker-for-blender|KeenTools]]                                                     | GeoTracker                                                                           |
| [[https://www.blendermarket.com/products/dream-textures|Dream textures]]                                               | AI-generate textures, ...                                                            |
| [[https://github.com/tin2tin/Pallaidium|Pallaidium]]                                                                   | AI-generate video, image, and audio from text prompts                                |
| [[https://fairmarket.land/product/phyx-drag?a=c8edc042|PhyX]]                                                          | Scene layout tool                                                                    |
| [[https://blendermarket.com/products/engon|Engon]]                                                                     | Asset browser                                                                        |
| [[https://udinbv.gumroad.com/l/shaders|Udin Shaders]]                                                                  | Car shaders                                                                          |
| [[https://github.com/atticus-lv/PolyQuilt|Poly Quilt]]                                                                 | Retopology tool                                                                      |
| [[https://extensions.blender.org/add-ons/storypencil-storyboard-tools/|StoryPencil]]                                   | Storyboarding                                                                        |
| [[https://blendermarket.com/products/gaffer-light-manager|Gaffer]]                                                     | Light & Hdri Manager                                                                 |
| [[https://engelik.gumroad.com/l/DQNYI|Light manager]]                                                                  | Light manager                                                                        |
| [[https://github.com/RedHaloStudio/Sketchup_Importer/releases/tag/0.23.2|Sketchup Importer]]                           | Tested with 3.6                                                                      |
| [[https://github.com/EatTheFuture/compify|Compify]]                                                                    | Easier/better compositing in 3D space                                                |
| [[https://github.com/Kiri-Innovation/3dgs-render-blender-addon|3DGS Render]]                                           | Gaussian Splatting Editor/Renderer                                                   |
| [[https://github.com/leukbaars/DreamUV|DreamUV]]                                                                       | Tools that allow you to manipulate UVs in the 3D viewport                            |
| [[https://extensions.blender.org/add-ons/boltfactory/|BoltFactory]]                                                    | Add a bolt or nut.                                                                   |
| [[https://blendermarket.com/products/sculpt-bridge-tool|Sculpt Bridge Tool]]                                           | Create a bridge or punch a hole in a mesh                                            |
| [[https://blendermarket.com/products/shadersplus|Shaders Plus]]                                                        | Caustics, Thin Film, Dispersion For Cycles & Eevee                                   |
| [[https://blendermarket.com/products/gobos-plus---procedural--4k-gobos-for-cycles--eevee|Gobos Plus]]                  | Procedural & 4K Gobos For Cycles + Eevee                                             |
| [[https://blendermarket.com/products/iesplus?ref=1210|Ies Plus]]                                                       | Procedural Ies Light Nodes                                                           |
| [[https://blendermarket.com/products/light-wrangler|Light Wrangler]]                                                   | Modify lights faster with shortcuts etc                                              |
| [[https://blendermarket.com/products/lens-sim|Lens Sim]]                                                               | Lens simulation for Bokeh, Chromatic Aberration                                      |
| [[https://github.com/chsh2/nijiGPen/releases|nijiGPen]]                                                                | Adds new features to Grease Pencil for creating 2D graphic design and illustrations  |
| [[https://extensions.blender.org/add-ons/grease-pencil-tool-wheel/|Grease pencil tool wheel]]                          | Extended pie menu for selecting Grease Pencil tools quickly.                         |
| [[https://extensions.blender.org/add-ons/lfs-camera-plane/|Camera Plane]]                                              | Import images and stick them to the camera                                           |
| [[https://rileyb3d.gumroad.com/l/ngsqwr|Timelapse orbit]]                                                              | Create rotating viewport to record                                                   |
| [[https://ilyassel.gumroad.com/l/TargetIt|Target, Please!]]                                                            | The Ultimate Targeting Add-on for Blender                                            |
| [[https://blendermarket.com/products/materialiq|Materialiq]]                                                           |                                                                                      |
| [[https://extensions.blender.org/add-ons/ikea-browser/|IKEA browser]]                                                  | Download IKEA furniture right inside Blender                                         |
| [[https://github.com/bastianlstrube/Blender-Super-Duper-Batch-Exporter|Batch Exporter]]                                |                                                                                      |
| [[https://extensions.blender.org/add-ons/print3d-toolbox/?utm_source=blender-4.4.1|3D Print Toolbox]]                  |                                                                                      |
[[https://github.com/agmmnn/awesome-blender|A curated list of Blender Add-on's]]
\\
===== Python scripts =====
Assign shaders to selected meshes with the same name as the shader\\
<code python>
  import bpy
  # Get selected objects
  selected_objects = bpy.context.selected_objects
  # Loop through selected objects
  for obj in selected_objects:
      if obj.type == 'MESH':
          # Check if there's a material with the same name as the object
          matching_material = bpy.data.materials.get(obj.name)
        
          if matching_material:
              # Clear existing materials on the object
              obj.data.materials.clear()
            
              # Assign the matching material to the object
              obj.data.materials.append(matching_material)
              print(f"Assigned material '{matching_material.name}' to object '{obj.name}'")
          else:
              print(f"No matching material found for object '{obj.name}'")
  print("Material assignment complete for selected objects.")
</code>
Quickly Import KitBash3D Models into the Blender Asset Browser\\

<code python>
# Open your KB3D Pack. Make sure the textures are loaded and everything works as intended. This script assumes the Scene is named KB3D_"TitleCasePackName"-Native. It should be that by default.
# Create a new folder in your Asset Library Folder for Blender. (Edit>Preferences>FilePaths>AssetLibraries). I recommend a setup like this 
# (D:/BlenderAssetLibraries/KB3D/CyberDistricts/Cyberdistricts.blend)
# Where "CyberDistricts" would be the AssetLibrary.
# Open the script in Blender by going to the Text Editor and clicking "Open" to locate the file, or paste it from the Gist.
# Run the script by clicking the "Run Script" button in the Text Editor or pressing Alt+P.
# The script will create new collections for each type of asset in your scene and move the assets into these collections. It will also generate a unique ID for the asset pack and each asset in the pack.
# The script will then update the asset catalog file to include the new asset pack and each asset in the pack.
# Once the script is finished, you can save your Blender file and close it.
# You should now see it in the asset libraries section on Blender.
# Troubleshooting: If something goes wrong or a mistake is maid I have minimal errorchecking. Just undo before the script was run and delete the Catalogs or the "blender_assets.cats.txt" file, 
# they may trip up the script if it failed partway through.
# I put a lot of effort into making this, so if you'd like to show your appreciation-
#   you can donate to me through PayPal at the link below: https://paypal.me/mintyfresh

# Update: Remade better.
# TODO: Add simple GUI, test all packs, ensure consistent sizing and proper integration for easy placing of props.

import bpy
import os
from pathlib import Path
import uuid

#filename
file_name = str(bpy.data.scenes.keys()[0].split('_')[1].split('-')[0])
folder = Path(bpy.data.filepath).parent
new_uuid = str(uuid.uuid4())

# Mapping for collections to asset types
collection_map = {
    "Props": "Prop",
    "Buildings": "Bldg",
    "Structures": "Strc",
    "Vehicles": "Vehi",
    "Creatures": "Crea"
}
kit_catalog = {}

flipped_cmap = {v: k for k, v in collection_map.items()}

# Create the primary collections
primary_collections = ["Props", "Buildings", "Structures", "Vehicles", "Creatures", "Other"]
for collection_name in primary_collections:
    new_collection = bpy.data.collections.new(collection_name)
    bpy.context.scene.collection.children.link(new_collection)

# Loop through all the empties and sort them into the collections for the library
for obj in bpy.data.objects:
    if obj.type == "EMPTY" and obj.name.startswith("KB3D_"):

        # Sort the new collection into the correct group
        asset_type = obj.name.split("_")[2][:4]

        # Check if the asset_type exists in the flipped_cmap dictionary
        if asset_type in flipped_cmap:
            cm_col_name = flipped_cmap[asset_type]
        else:
            cm_col_name = "Other"

        # Create a new collection with Empty's name
        new_collection = bpy.data.collections.new(obj.name)
        bpy.data.collections[obj.name].objects.link(obj)

        # Linking Object groups
        cm_col = bpy.data.collections[cm_col_name]
        # Move the object's children to the new collection
        bpy.data.collections[cm_col.name].children.link(bpy.data.collections[obj.name])
        kit_catalog[obj.name] = cm_col.name
        
print(kit_catalog.values())

# Loop over Object and relink to parents.
for obj in bpy.data.objects:
    if obj.type == "MESH" and obj.parent != None:
        bpy.data.collections[obj.parent.name].objects.link(obj)
        
for empty in bpy.data.objects:
    if empty.type == 'EMPTY' and empty.name.startswith('KB3D_'):
        bpy.context.scene.collection.objects.unlink(empty)
        for child in empty.children:
            bpy.context.scene.collection.objects.unlink(child)

for col in bpy.data.collections:
    if col.name.startswith('KB3D_'):
        col.asset_mark()

# Create a list of all empty objects
empty_objects = [obj for obj in bpy.data.objects if obj.type == "EMPTY" and obj.name.startswith("KB3D_")]

# Loop through the list of empty objects and clear their locations
for obj in empty_objects:
    obj.location = (0, 0, 0)

asset_catalog_path = folder / "blender_assets.cats.txt"

# Initialize the list of lines and the asset_uuids dictionary
lines = []
asset_uuids = {}

# Read the existing asset catalog file into a list of lines
with asset_catalog_path.open('a+') as f:
    f.seek(0)  # Move the file pointer to the beginning of the file
    lines = f.readlines()

# Check if the blender_assets.cats.txt file is empty and initialize it if necessary
if os.path.getsize(asset_catalog_path) == 0:
    header_lines = [
        "# This is an Asset Catalog Definition file for Blender.\n",
        "#\n",
        "# Empty lines and lines starting with `#` will be ignored.\n",
        "# The first non-ignored line should be the version indicator.\n",
        "# Other lines are of the format \"UUID:catalog/path/for/assets:simple catalog name\"\n",
        "\n",
        "VERSION 1\n\n"
    ]
    lines.extend(header_lines)

# Add new lines to the catalog if necessary
file_contents = ''.join(lines)

# Initialize the asset_uuids dictionary outside the condition
collection_uuids = {collection_name: [] for collection_name in collection_map.keys()}
collection_uuids["Other"] = []

if file_name not in file_contents:
    if "KB3D" not in file_contents:
        lines.append(f"{str(uuid.uuid4())}:KB3D:KB3D\n")
    lines.append(f"{str(uuid.uuid4())}:KB3D/{file_name}:{file_name}\n")

    for collection_name in collection_map.keys():
        asset_uuid = str(uuid.uuid4())
        asset_uuids[collection_name] = asset_uuid
        lines.append(f"{asset_uuid}:KB3D/{file_name}/{collection_name}:{collection_name}\n")

    asset_uuid = str(uuid.uuid4())
    asset_uuids["Other"] = asset_uuid
    lines.append(f"{asset_uuid}:KB3D/{file_name}/Other:Other\n")

# Write the updated list of lines back to the file
with asset_catalog_path.open("w") as f:
    f.writelines(lines)

kit_catalog = {}

# Asset Library Adder
for col in bpy.data.collections:
    if col.name.startswith("KB3D_"):
        # Gets the asset type of an object from the Name
        # Ex: Bldg Prop Strc
        asset_type = col.name.split("_")[2][:4]  # e.g. "Bldg"

        # Check if the asset_type exists in the flipped_cmap dictionary
        if asset_type in flipped_cmap:
            asset_name = flipped_cmap[asset_type]  # e.g. "Buildings"
            col.asset_data.catalog_id = asset_uuids[asset_name]
        else:
            asset_name = "Other"
            col.asset_data.catalog_id = asset_uuids[asset_name]  # Set the catalog_id for the "Other" category

        print(col.name, asset_name)
        # Linking Object groups
        cm_col = bpy.data.collections[col.name]  # Buildings [Collection]
        print('adding', col.name, 'asset_data')
</code>
===== Demo Scenes =====
^ Description                              ^ Name                                                                                               ^
| Fake caustics                            | [[https://app.gumroad.com/d/b831ccb7c47989ba31987807ae974158|Refractive Caustics (Blender 3.2+)]]  |
| Geo nodes presets wit fields (like C4D)  | [[https://app.gumroad.com/d/d00352cb11da823b4633f1254cd77de1|Geo Nodes presets]]                   |
| Abstract Loops                           | [[https://ko-fi.com/s/9131dc3af8|Abstract Loops]]                                                  |
===== Links =====


  * [[https://www.youtube.com/watch?v=jnj2BL4chaQ&t=4s|Beginners tutorial]]
  * [[https://hollisbrown.github.io/blendershortcuts/|Blender Shortcuts]]
  * [[https://docs.blender.org/manual/en/latest/|Manual]]
  * [[https://bubblepins.com/membership/export-houdini-kinefx-rigs-amp-blendshapes-to-blender|Export Houdini KineFX Rigs & BlendShapes to Blender]]
  * [[https://www.youtube.com/watch?v=p-TEYeXQqDU|Macro Photorealism in Blender]]
  * [[https://www.youtube.com/watch?v=rrZiSwXoBVA&ab_channel=TomiViitanen|How to Turn HDRi to 3D ENVIRONMENT]]
  * [[https://www.youtube.com/@GlebAlexandrov/videos|CreativeShrimp]]

==== Grease Pencil ====

  * [[https://cgcookie.mavenseed.com/courses/grease-pencil-basics-an-introduction-to-blender-s-grease-pencil|Grease Pencil]]\\
  * [[https://www.youtube.com/watch?v=7PrgpIskR5s&ab_channel=CGCookie|Storyboarding in 3D Space]]\\
  * [[https://www.youtube.com/watch?v=lpimPeoVeZ4|Storyboard with Blender's Grease Pencil: tips for your short film]]\\
  * [[https://www.youtube.com/watch?v=yaOEsAOnq7s|Blender 2D Animation Basics for Beginners - Grease pencil guide]]\\
  * [[https://jjanneanthony.com/2024/02/23/31-day-grease-pencil-challenge-in-blender/|31-Day Grease Pencil Challenge in Blender]]\\

=== Brushes ===

  * [[https://www.youtube.com/watch?v=8XknRHz-yik|PENCIL TEXTURE pack]]\\
  * [[https://cgcookie.com/downloads/paul-s-grease-pencil-3-0-brush-pack|Greace pencil brush pack]]\\
  * [[https://www.youtube.com/watch?v=FHu6X_N3qjU|How to create and manage Grease Pencil 3.0 Brush Assets in Blender]]\\


==== Production ====

  * [[https://www.youtube.com/watch?v=w6YPbidAAzQ|How Ian Hubert Hacked VFX - Delighting]]\\
  * [[https://www.artstation.com/blogs/ericcorreia/AgNXW|A Guide on Achieving Flawless Bakes]]\\
Brain II

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