blender cheat cheet

blender_cheat_sheet.md

blender cheat sheet

general

• move cam - press mouse middle + move mouse

unkown

• open menu - propotional editing fallof => SHIFT+o

all ?? modes

• switch view: SHIFT+z => switch views wirefarme & solid
• SHIT+S opens snap menu (e.g. "select to..." or "cursor to...")

switch modes

• TAB => switch between object & edit mode
• using the mode menu
• SHIFT+r => same as TAB ???

object mode

• set origin of object - SHIFT+CTRL+ALT+C
• DELETE => select object (left click) + press x => a popup appears
• ADD (object/mesh) => SHIT+A

edit mode

• ??? group selected - CTRL+G
• ??? select similiar - SHIFT+G
• SHIFT+W => ??? deforms the object ???
• duplicate => SHIFT+d
• ??? delselect ??? => SHIFT+l
• ??? zoom in / zoom to object ??? => SHIFT+c
• ??? deform 2nd ??? => SHIFT+v
• ??? zoom in selection ??? => SHIFT+b

export stl

• https://www.shapeways.com/tutorials/exporting-from-blender

plan: giving the donut a more realistic rougher surface (using procedural displacements)
source: Part 4, Level 2: Procedural Displacement - Blender Beginner Tutorial

• ...
  • select donut
  • go to tab "shading"
  • ensure "look dev"(look development) view mode (where you choose e.g. solid, rendered ...)
    • note: uses eevee renderer to preview material; with an HDRi (???)
      • note: as I understand HDRi: images of environments which capture light source related stuff (as well as color stuff etc) but its basically for light shading ?!

• add procedural texture (same mode as before)
  • add new nodeSHIFT+A => "Texture" => "Noise Texture"
  • to check look of noise texture we can use an add-on
    • enable add-on => "open Menu "Edit" > "Preferences" > "Add-ons" > search for "node" OR "Node Wrangler"
    • enable "Node Wrangler"
  • now we can CRTL+SHIFT+left-click on the new node ("Noise Texture")
    • this will connect the node directly via a preview to the "Material Output" node
      • multiple CRTL+SHIFT+left-click to change channels (Fac / Color)
    • `command+Z to reverse the effect
    • OR CRTL+SHIFT+left-click on main "Principled BSDF" shader node to reverse the effect
  • we want to use the "Fac" (factor) input channel
    • to drive bumpiness and color
    • common way to add free detail
  • add "Texture Coordinate" node
    • connect: (Texture Cooridnate - Object>) => ("Noise Texture" - >Vector)
    • seems "most" appropriated for like procedural textures
  • set ("Noise Texture" - o:scale) to 1500 (or play around with it)
  • info: real bump and fake bump
  • add new nodeSHIFT+A => "Vector" => "Vector Displacement"
  • connect: (Noise Texture - 'Fac>') => ("Vector Displacement" - '>Height')
  • connect: ("Vector Displacement" - 'Displacement') => ("Material Output" - '>Displacement')
  • CRTL+SHIFT+left-click on main "Principled BSDF" shader node
  • we can check in render view mode ?!

• note: until this point it is "fake bump"
  • it's not changing the edged of the object
  • you could also put the displacement into the '>normal' input of the main "Principled BSDF" shader node
  • also this displacement we are currently working on expects cycles render engine, you won't see certain options in eevee

• enable/use displacement in material properties
  • go to "Material" properties
  • g to settings
  • change dropdown "Displacements" from "Bump only" to "Displacement and Bump" (only visible when cycles is used)
  • fixup scale in displacement node
    • set ("Vector Displacement" - o:scale) to 0.003
  • note: the look will depend on the number of vertecies the mesh is having => more => more detail (you can add more with subserv mod)

plan: finishing donut, add larger details, add larger bumps
source: Part 5, Level 2: Final Donut - Blender Beginner Tutorial

• add larger bumps
  • duplicate (Noise Texture) node
  • set (snd)(Noise Texture" - o:scale) to 200
  • merge/mix both (Noise Texture) nodes
    • add "MixRGB" node SHIFT+A => "Color" > "MixRGB"
    • ensure "Fac>" input to connect to "MixRGB" node
    • we can check again with CRTL+SHIFT+left-click on "MixRGB" to preview the effect only
    • note: ("MixRGB" - o:Fac) set to 0 uses 100% of color1; if set to 1 it uses 100% of bottom color
    • change ("MixRGB") blend type (dropdown) from "Mix" to "Add"
      • note: now it's gonna use the "bright" value from one texture and applies it over the values of the other texture (fac to 1 shold be what we want but still liiks fake, mashed together)
        • the top color is always 100% and the bottom color is affected now by the "scale" option

• we want clear big bumps
  • add ColorRamp between (snd)(Noise Texture) & ("MixRGB")
  • if we only want to have the white values, we can change the black slider & increase the black color amount, we only get the top values
  • make it 50/50 black/white
  • we can e.g. change by (Displacment - o:scale) to .002 to minimze small values ?!
  • switching the (fst)(Noise Texture) to the snd color of ("MixRGB") & (snd)(Noise Texture) to first allows us now via MixRGB sclae to control the small details (how much we want (to pass throug))

• fixups
  • small detail noise texture to 2000 (scale)

• making bump influence color/shadow (6:00)
  • add new (snd)("MixRGB") color node
  • connect ("donut_texture_paint" - 'Color>') => (snd)("MixRGB" - '>Color1')
  • connect (fst)("MixRGB" - 'Color>') => (snd)("MixRGB" - '>Fac')
  • (snd)("MixRGB" - '>Fac')
    • changing '>Color2' manually to a e.g. red or brown
    • change dropdown tyhe from "Mix" to "overlay"
    • will effect the bump influence color/shadow of the donut making it look like its burned

• some tweaks we could do (10:00)
  • sprinkles
    • amount
    • weight map more random
  • icing
    • color
    • subsurface scattering
  • texture painting
    • with another ("MixRGB") node between texture_paint and the new MixRGB node we can add another overlay/Mix to thin out the white amount

• silly/fun
  • make icing radio active
  • go to "Material" properties and go to emission and play around