=================
TKE_Cutting_Plane
=================

Opcode
======

.. csv-table::

	"ASCII", "/"
	"Hexadecimal", "2F"
	"Decimal", "47"
	
	
Operands
========

| Variable geometry, Long count,
| (count)x[ Float a, Float b, Float c, Float d ] 

.. csv-table::

	"count", "number of cutting planes"
	"a, b, c, d", "specification of cutting plane"
	
	
Notes
=====

A cutting plane is defined by the standard plane equation ax+by+cz+d=0. The normal component of the plane (a,b,c) points toward the side which is removed.

A cutting section is defined as two or more cutting planes defined as a group. Where separate cutting planes trim away more of the scene, additional planes in a cutting section trim away *less* of the scene. For example, three perpendicular planes defined together as a section removes one octant of the scene, while those same three planes defined separately would only *leave* an octant. 

The *count* for sutting sections was added in HSF version 13.05; older versions only support individual cutting planes and reading or writing should use an implied *count* of **one**. 
