Back to Top

set operation

In this topic

    Syntax

    • set(attribute, value)

    Parameters

    1. attribute—selector
      Name of shape attribute to set.
    2. value—(bool, float, string, bool[], float[], string[] - same type as attribute)
      Value to assign to shape attribute.
      Note:

      Not all shape attributes are writable.

    Description

    The set operation assigns a value to a shape attribute of the current shape. There are two kinds of shape attributes: builtin attributes such as material.color or scope.tx and generic attributes, which are declared as rule attributes (see CGA attributes).

    Related

    • material attribute
    • pivot attribute
    • scope attribute
    • seedian attribute
    • trim attribute
    • resetGeometry operation
    • resetMaterial operation
    • setMaterial operation

    Examples

    Builtin shape attributes

    Enable horizontal trim planes

    set(trim.horizontal, true)

    Set x-translation of scope 0

    set(scope.tx, 0)

    Set the material color's red component to 0.5

    set(material.color.r, 0.5)

    Assign the built-in test texture to the colormap channel

    set(material.colormap, "builtin:uvtest.png")

    Generic shape attributes

    Store floor index in a generic attribute, floorHeight. The attribute is then used to color the windows on every 3rd floor in pink.

    attr floorNumber = -1

const floorHeight = 4

Init -->    extrude(30)
            comp(f)  { side : Side }
   
Side -->    split(y) { ~floorHeight : Floor }*
   
Floor -->   set(floorNumber, split.index)
            split(x) { ~1   : Wall 
                     | {~3  : Tile }* 
                     | ~1   : Wall } 
Tile -->    split(x) { 0.5  : Wall 
                     | ~1   : MidTile 
                     | 0.5  : Wall }
MidTile --> split(y) { 0.5  : Wall 
                     | ~1   : Window 
                     | 0.5  : Wall }
			
Window -->  case floorNumber % 3 == 0 :
                color(1.0, 0.0, 1.0) X.
            else : X.
    		Store floor index with

    Feedback on this topic?

    In this topic