Learn Blender 3 - Polygon 3D Mesh Explained

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Polygon Mesh - 3D Coordinates

  • There are 3D coordinates based on the XYZ axis

    • There are different conventions in fields and software
      • What axis is up
      • Positive values
      • Right hand and left hand rule
      • Units
      • Clock-wise or counter clockwise
  • Normal is perpendicular to the surface

    • Good for light
      • fresnel effect
  • UV texture

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Learn Blender 3 - Polygon Mesh Vertex Edge Face

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  • Different types of modeling

    • NURBS (non uniform rational basis splines)
      • Was popular for a time because it was smooth/organic (not hard) surface
      • Less intuitive (points were not on the surface)
      • More abstract
      • Due to computation, not always accurately designed
  • Polygon modeling based

    • Look very blocky (or faceted)
    • Computationally expensive and a lot of RAM to deal with all these points
      • Not so these days
    • Now, we can have a lot more points

What does it consists of

  • Points, or vertices (plural of vertex)
  • Edges
  • Faces (can be called a polygon)
    • All polygons are made of triangles

 

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Learn Blender 3 - Menu for Quick Favorites

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  • Quick Favorites
    • Hotkey: q
    • By default, it is empty
  • To add items to the Quick Favorites menu,
    • Right-click on a button or item, such as a widget, and choose Add to Quick Favorites
  • Example:
    • Viewport Overlay wireframe
  • To remove items from the Quick Favorites menu.
    • Right-click on item in quick favorites menu and choose
      • Remove from Quick Favorites
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Learn Blender 3 - Undo

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  • To undo
    • Edit -> Undo
    • Hotkey: Ctrl + z
  • To redo
    • Edit -> Redo
    • Hotkey: Shift + Ctrl + z
  • You can view the undo history
    • Edit -> Undo History...
    • By default, 32 commands or steps are stored in the undo history.
    • You can change the number of undo steps
      • Edit -> Preferences -> System
        • Under Memory & Limits -> Undo Steps
      • NOTE: Depends on your system resources, i.e. your memory, how many it can handle.
  • Undo is only for the active session. The undo history is not saved when you close the file.
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Learn Blender 3 - Add-ons

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  • Can think of it as plug-ins in other software.
  • It extends the functionality of Blender that were not originally coded into the software.
  • You can install addons from other third-parties or develop your own.
    • If you work at a studio or a project, there may be custom addons to streamline your specific workflow.
  • To add addons
    • Edit -> Preferences -> Add-ons
      • You can list the
        • Official
        • Community
        • Testing
        • Install (off your drive, or storage medium)
        • Refresh
      • You can search for Add-ons as well in the search field.
      • You can hold shift to multiview
  • Some Add-ons come with Blender when it is installed but just not enabled by default.
    • It can save time loading features that most people in general won't use unless you work...
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Learn Blender 3 - Modifiers

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  • Modifies the object non-destructively.
    • This means the original object state is still accessible
  • To add a modifier
    • Select an object
    • Go to the wrench icon, which is the Modifier tab.
    • Add a modifier
  • To remove a modifier, click the X in the top right corner
  • You can bake the effects of the modifier into the object, making it a destructive operation.
    • Drop down menu, choose apply
      • Hotkey: Ctrl + a
  • You can duplicate modifiers
    • Drop down menu, choose duplicate
    • Hotkey: Shift + d
  • You can stack modifiers
    • It is stacked from top to bottom
      • Top-most modifiers affect first
  • Buttons at the top will be found on all modifiers
    • The monitor icon enable/disable seeing the modifier's...
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Learn Blender 3 - Outliner - Icons, Visibility, Selectable

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Icons

  • There are icons on next to objects
    • Viewport visibility
      • Eye icon
    • Render visibility
      • Camera icon
  • There is a filter at the top to show icons in the outliner
    • Such as the arrrow icon for selectable

 

Visibility

  • Hide selected objects
    • Hotkey: h
  • Unhide selected objects
    • Hotkey: alt + h

 

Selectable

  • Add the arrow icon in the outliner
  • Toggle it on and off

 

Isolate Select - Local View

  • Isolate Selected Object
    • Blender calls it local view
    • Hotkey: /
      • On keyboard or numerical keypad
    • View -> Local View -> Toggle Local View
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Learn Blender 3 - Outliner - Collections

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Collections

  • Scenes always start with a default collection.
    • Relatively new concept
    • Root Scene Collection
      • Cannot be delete
      • Cannot be renamed
  • The default collection cannot be deleted
  • Objects will be added to scenes where the collection is active.
    • If Scene Collection is selected, object will be added there
    • If Collection is selected, object will be added there
  • Can add new collection with icon on top right of outliner
    • or right click an empty space and create a new collection.
    • Also by having objects selected
      • Hotkey: m
        • New collection
  • To rename an object in the outliner
    • double click and rename
    • Press F2 and rename
  • Can delete a collection
    • Hotkey: x
    • Hotkey: Delete
    • Objects in the collection will go to the parent...
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Learn Blender 3 - Startup File - File that Opens on Start Up

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  • Setup your scene that you want to have start up.
    • File -> Defaults -> Save Startup File
  • Can reload the factory default settings and save it again to get back.
    • File -> Defaults -> Load Factory Settings
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Learn Blender 3 - 3D Cursor, Drag Out Menus , Manipulator Precision

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  • 3D Cursor
    • 3D Manipulator icon
    • Hotkey: Shift + Spacebar, Spacebar
    • Shift + Right Mouse Button
      • It will be a raycast hit
    • To reset:
      • Object -> Snap -> Cursor to World Origin
  • Can drag out the manipulator and transform menus
  • For manipulator precision
    • Can hold Ctrl to go be increments
    • Shift to go be smaller values
    • While still holding the right mouse button, type in the value in the number pad.
  • Dimensions field is related to scale
    • Another representation of it.
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