Working with Meshes (Written)

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    Meshes are objects composed of polygonal Faces, Edges and/or Vertices and are used to represent Geometry in 3D space. 

    Vertex.png

    Edge.png

    Face.png

    Adding Meshes

    There are a number of different primitive mesh shapes that can be quickly added into the 3D Viewport.

    To add a mesh to the scene

    1. Select one of the primitive objects from the "Mesh" menu located in the "Add" Menu in the 3D Viewport Header.

      Add_Mesh.png

    Selecting and Moving Geometry

    When working in object mode you can move, rotate, and scale the mesh object, but If you want to modify the shape of the geometry you must be in edit mode.

    To enter edit mode on a mesh

    1. Select a Mesh Object
    2. Type the (Tab) key. When you are in edit mode You will see a message on the Top Header that reads "You are currently in Edit Mode type the TAB key to return to object mode".  

      Edit_Mode_Message.png

    In edit mode you can select each individual Vertex, Edge, and Face. You can change the selection mode in the "Selection Mode" Menu in the right click menu.

    selection_mode.png

    Once you have geometry selected you can either move, rotate, or scale the selected geometry.

    Move/Grab

    grab_manip.png

    The 3D manipulator handles can be used to move along the X, Y and Z axes. Alternatively, the hotkeys below can also be used.

    • Move/Grab (G) - Moves the geometry along the view ports axis.
      • X Axis (X) - constrains the movement along the x axis.
      • Y Axis (Y) - constrains the movement along the Y axis.
      • Z Axis (Z) - constrains the movement along the Z axis.
      • Y, Z Axis Constrain (Shift + X) - constrains the movement along the y and z axis.
      • X, Z Axis Constrain (Shift + Y) - constrains the movement along the x and z axis.
      • X, Y Axis Constrain (Shift + Z) - constrains the movement along the x and y axis.

    Rotate

    rot_manip.png

    The 3D manipulator handles can be used to rotate along the X, Y and Z axes. Alternatively, the hotkeys below can also be used.

    • Rotate (R) - Rotates the geometry based on the Pivot Points origin.
      • X Axis (X) - constrains the rotation along the x axis.
      • Y Axis (Y) - constrains the rotation along the Y axis.
      • Z Axis (Z) - constrains the rotation along the Z axis.
      • Y, Z Axis Constrain (Shift + X) - constrains the rotation along the y and z axis.
      • X, Z Axis Constrain (Shift + Y) - constrains the rotation along the x and z axis.
      • X, Y Axis Constrain (Shift + Z) - constrains the rotation along the x and y axis.

    Scale

    scale_manip.png

    The 3D manipulator handles can be used to scale along the X, Y and Z axes. Alternatively, the hotkeys below can also be used.

    • Scale (S) - Scales the geometry based on the Pivot Points origin.
      • X Axis (X) - constrains the scale along the x axis.
      • Y Axis (Y) - constrains the scale along the Y axis.
      • Z Axis (Z) - constrains the scale along the Z axis.
      • Y, Z Axis Constrain (Shift + X) - constrains the scale along the y and z axis.
      • X, Z Axis Constrain (Shift + Y) - constrains the scale along the x and z axis.
      • X, Y Axis Constrain (Shift + Z) - constrains the scale along the x and y axis.

    Selection Commands

    There are several commands that can be used to select lots of geometry at one time. These can be accessed in the 'Select' menu as well as using the hotkeys listed below.

    select_menu.png

    • Toggle De/Select All (A) - Toggles Select All/ Deselect All

    • Border Select (B) - Box Select allows you to drag your mouse to select several Vertices, Edges, and/or Faces at a time.
      • Left Click and Drag - Adds to Selection
      • Middle Mouse Button and Drag - Remove from Selection
      • Right Click or Esc - Cancel Command
    • Circle Select (C) - Circle select
      • Left Click and Drag - Adds to Selection
      • Middle Mouse Button and Drag - Remove from Selection
      • Scroll Up on Mouse Wheel - Decrease Selection Size
      • Scroll Down on Mouse Wheel - Increase Selection Size
      • Right Click or Esc - Cancel Command

    Mesh Modeling Tools

    There are many tools that can be used to model this type of object into anything that you can imagine. Here is a list of some of the tools that you have available in the edit mode right click menu.

    edit_mode_right_click.png

    1. Extrude and Move on Normals (E) 

    Extrudes and moves the geometry along the normals.

    extrude.png

      • X Axis (X) - constrains the movement along the x axis.
      • Y Axis (Y) - constrains the movement along the Y axis.
      • Z Axis (Z) - constrains the movement along the Z axis.
      • Y, Z Axis Constrain (Shift + X) - constrains the movement along the y and z axis.
      • X, Z Axis Constrain (Shift + Y) - constrains the movement along the x and z axis.
      • X, Y Axis Constrain (Shift + Z) - constrains the movement along the x and y axis.

    2. Knife Topology Tool (K)

    Activate Knife Topology Tool.

    knife.png

      • Create Cut (LMB) - Creates a cut in the geometry this command snaps to edges and faces of a mesh
      • Confirm (Spacebar) or (Enter) - Confirms the cuts in the mesh.
      • Cancel Command (Esc) or (RMB) - Cancels the command. No cuts are made
      • Start to Cut (E) - Creates a new cutting line
      • Midpoint Snap Toggle (Ctrl) - Hold to turn on mid point snapping
      • Ignore Snapping Toggle (Shift) - Hold to disable edge snapping
      • Angle Constrain Toggle (C) - turns on/off snapping lines to 45 degree increments
      • Cut Through Mesh Toggle (Z) - turns on/off the ability to cut though the entire mesh

    3. Subdivide

    subdivides (“cuts in two” at the middle) all selected edges adding necessary vertices.

    cube_subdivided.png

     

    4. Loop Cut and Slide (CTRL+R)

    Alternatively, to just divide your object along one direction, you can use the 'Loop Cut and Slide' tool.

    loop_cut.png

     

    5. Edge Slide (G,G)

    Slides one or more edges across adjacent faces

    edge_slide.png

     

    6. Bevel (CTRL+B)

    Bevels selected edges

    bevel.png

     

    7. Make Edge/Face (F)

    Create an edge or some faces, depending on your selection.

    fill_edge.png

    fill_face.png

     

    8. Separate (P)

    Separates parts of a mesh from the mesh you are editing currently into it's own mesh object.

    separate.png

     

    9. Remove Doubles

    Removes duplicate vertices (vertices occupying the same location in 3D space).

     

    More Information on Modeling 

    Since Fluid Designer is built on top of Blender you have access to all of Blenders robust modeling Tools. CGCookie has a very extensive course on this subject. Here is a link to the training series.

    https://cgcookie.com/blender/cgc-courses/mesh-modeling-fundamentals-blender/

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