extrude

Synopsis

extrude(distance)

extrude(extrusionType, distance)

Extrudes the shape. Each face polygon of all meshes in the geometry asset is taken and extruded along the face normal or a given direction as specified by the extrusion type. The scope orientation is set in the following way:

The scope's sizes are adjusted to tightly fit the extruded geometry. If distance is negative, the scope.sy attribute will be negative.

Texture coordinates are inherited from the shape.

Parameters

Related

Examples

Extrusion along Normals



Initial shape On the left, an initial shape consisting of 2 faces and the initial scope is shown.




Extrusion along one face normal
Lot-->
	extrude(10)					
		
The extrude operation extrudes all faces along their normals and combines the results. No internal lamina faces are created.

The scope's y-axis is set to the extrusion direction.




Extrusion along several face normals
Lot-->
	extrude(face.normal,10)					
		
For uneven shapes the extrusion is performed for each face individually and internal faces are created.

The scope's y-axis is set to the normal of the first face.

Using face.normal is the default and the same as extrude(10).




Extrusion along vertex normals
Lot-->
	extrude(vertex.normal,10)					
		
The extrusion along vertex normals keeps faces together and no internal faces are created.

The scope's y-axis is set to the normal of the first vertex.


Extrusion along world coordinate axis



Extrusion along world axis
Lot-->
	innerRectangle(scope) { shape : Shape | remainder : Remainder }
Shape-->
	extrude(world.up,10)
Remainder-->
	color(0,1,0)
		
Each face is extruded along the world coordinate's y-axis. No internal lamina faces are created.

The scope's y-axis is set to the world's y-axis.




Extrusion with flat top
Shape-->
	extrude(world.up.flatTop,10)
		
A flat top surface is created. The extrusion distance is measured from the lowest vertex of each shape wrt. to the world's y-axis.




Extrusion with zero distance
Shape-->
	extrude(world.up.flatTop,0)
		
The extrusion distance is set to at least the maximum extent of the shape along the world's y-axis. If the distance is zero the extrusion is positive.




Extrusion with negative distance
Shape-->
	extrude(world.up.flatTop,-10)
		
If the distance is negative the extrusion is measured from the highest vertex of each shape wrt. to the world's y-axis.

The scope's y-size becomes negative.

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