set operation

Syntax

  • set(attribute, value)

Parameters

  1. attributeselector
    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

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

In this topic