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 Create polygon primitives

Polygon creation

Create polygon primitives using the Create menu
 
                
               
             
             
            
            Create polygon primitives
                  interactively
          
       
       
       
       
      You
         can position, scale, and adjust various attributes on primitives
         as you create them using the Interactive Creation feature. Interactive
            Creation is turned on by default.
      
      The Interactive
            primitive creation feature lets you create primitives
         in two ways:
      
      
         - Click-drag in the scene to interactively
            position and adjust the primitive’s attributes.
         
- Click once in the scene to create a primitive.
            A primitive is created where you click. The primitive’s options
            are set by selecting 
                     Create > Polygon Primitives >
            Primitive Shape >   . .
The Exit
            on Completion option (turned on by default) automatically
         exits the primitive creation tool once you have created the primitive.
         If you want to create multiple primitives, turn off 
                  Create > Polygon Primitives > Exit
            on Completion.
      
      
      The steps for creating
         a polygon primitive interactively consist of multiple click-drag
         operations in the scene view. The number of click-drag operations varies
         depending on the primitive type:
      
      NotePressing Enter at
            any point during the interactive creation process immediately completes
            the primitive creation and skips any remaining attributes.
            
If you want to skip interactively
               setting an attribute during the interactive creation process, single-click
               with your mouse to move to the next step.
            
          
      Before you start:
      
      
         - Turn on 
                     Create > Polygon Primitives > Interactive
               Creation if necessary.
         
- Select 
                     Create > Polygon Primitives,
            and choose the primitive type, or select the primitive type from
            the Polygons shelf. 
            If you want to change
               the non-interactive attributes that a polygon primitive is created
               with, such as Radius, Divisions, or Texture Mapping UVs, select 
                        Create > Polygon Primitives >
               Primitive Shape >   . .
 
               
                  
                     
                     
                     
                        | Primitive type | To create the primitive interactively |  
                        | Sphere, Torus, Pyramid, Soccer
                                 Ball, Platonic Solids | 
                              In the scene view, click-drag to create
                                 the primitive. 
                                 The initial click-drag
                                    specifies the location for the primitive as well as the radius or
                                    scale for these primitive types.
                                  The Torus primitive has
                                    an additional click-drag step to specify the Section
                                       Radius attribute.
                                 In the scene view, click-drag to specify
                                 the subdivisions along the height and width of the primitive using
                                 the left mouse button.
                                 The Soccer
                                       Ball and Platonic Solids primitives
                                    do not have a subdivisions step.
                                  |  
                        | Cube, Cylinder, Cone, Prism | 
                              In the scene view, click-drag to create
                                 the primitive. 
                                 The initial click-drag
                                    specifies the location for the primitive as well as the shape of
                                    the base of these primitive types.
                                 Click-drag to specify the height of the
                                 primitive.
                              Click-drag to specify the subdivisions
                                 along the height, width, and depth of the primitive.
                                 Note: The number of click-drag operations
                                    for the subdivisions varies depending on the primitive type.
                                  |  
                        | Pipe, Helix | 
                              In the scene view, click-drag to create
                                 the primitive. 
                                 The initial click-drag
                                    specifies the location for the primitive as well as the radius/width
                                    of the primitive.
                                 Click-drag to specify the height of the
                                 primitive.
                              Click-drag to specify the following attributes
                                 for these primitive types:
                                 
                                    Pipe - specifies
                                       the thickness of the pipe.
                                    Helix - specifies
                                       the number of coils.
                                     Note: The Helix primitive
                                    has an additional click-drag step after the number of coils to specify
                                    the Radius attribute.
                                 Click-drag to specify the subdivisions
                                 along the height, width, and depth of the primitive.
                               |  
 
 
When the primitive creation
         steps are complete, the wireframe color for the primitive changes
         from a bright green to the green color for an actively selected
         object.
      
      TipTo set the axis for
            your primitive during interactive creation, you can use the orthogonal
            views. Whichever view you create your primitive in—top,
            front, or side—is the way your primitive’s axis will be
            aligned (y, z, or x).
         
      NotePrimitives with caps
            (Pyramid, Cylinder, Cone,
               Pipe) have an additional attribute called Adjust
               cap subdivisions after create that is turned off by default.
            When you turn this feature on in the primitive’s tool options window,
            an additional step is added to the interactive creation process
            for those primitive types.
         
      Holding down the Shift
         and Control keys during primitive creation has the following effect:
      
         
            
               
               
               
                  | Modifier key | Effect | 
               
                  | (None) | Grows plane and cube
                        primitives from one corner. Grows all other primitives from their
                        center.
                      | 
               
                  | Control | Grows plane and cube
                        primitives from their center. (No effect on all other primitives.) When
                        adjusting primitive attributes in subsequent interactive steps,
                        pressing the Control key momentarily reduces the mouse speed.
                      | 
               
                  | Shift | Constrains all primitives
                        to three-dimensional equilateral proportions and grows them from
                        their base. When adjusting primitive attributes in subsequent interactive
                        steps, pressing the Shift key momentarily increases the mouse speed.
                      | 
               
                  | Control + Shift | Constrains all primitives
                        to three-dimensional equilateral proportions and grows them from
                        their center. 
                      | 
            
         
       
      To
         create a polygon primitive with a single click
      
      
         - Select 
                     Create > Polygon Primitives > Interactive
               Creation. (Ensure that a check mark appears beside the Interactive
               Creation menu item)
            If you want to change
               the settings that the polygon primitive is created with, such as Divisions or Texture
                  Mapping, select 
                        Create > Polygon Primitives >
               Primitive Shape >   . .
 There are specific single-click
               settings for primitive creation.
             
- Click in the scene view to create the
            primitive.
         
To create multiple polygon primitives
         interactively
      
      
         - Select 
                     Create > Polygon Primitives > Exit
               on Completion to turn off the feature. (Ensure that a
            check mark does not appear beside the Exit on Completion menu
            item.)
         
You can create multiple polygon primitives
         in succession without having to return to the Polygon
            Primitive menu or Shelf.
      
      Useful interactive creation
            options
         
         During
            interactive primitive creation, you can snap the polygon to existing objects
            in the scene. You have the following options (click the icon in
            the Status line or press the hotkey).
            Snap to:
         
         
            - grid 
            
- curves
            
- CV, vertex, or pivot
            
- live object
            
These features let you
            snap to a projected point on the line or plane defined by any other
            object in your scene while you create the primitive. For example,
            you could create a cylinder to act as a telescope on the dome of
            an observatory.
         
         TipSome grid snap operations
               may limit the interactive primitive creation in the perspective
               view. For example, if you turn on grid snap and interactively create the
               base of a cube, you will not be able to vertically drag to create
               the height component if the grid snap option is left on while working
               in the perspective view.
               
Instead, create the base
                  of a cube in the perspective view, then switch to a front or side
                  orthographic view to snap the height of the cube using the grid as
                  a reference.
               
             
         For more information,
            see 
                     Snap to the grid, a curve, points, or a view plane and 
                     Snap all creation tools to a surface or construction plane.