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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.