SchemeExt:Entity:previous

From DocR23

Contents 1 Action 2 Filename 3 APIs 4 Syntax 5 Argument Types 6 Returns 7 Description 8 Arguments 9 Example

Action

Gets the previous COEDGE in an entity list.

Filename

scm/scmext/kern/ent_scm.cpp

APIs

None

Syntax

(entity:previous entity)

Argument Types

Argument	Scheme Data Type
entity	entity

Returns

entity

Description

Returns the previous COEDGE in the entity list.

Arguments

• entity specifies the entity that has to be queried.

Example

; entity:previous
; Create a solid block.
 (define block1 (solid:block (position 0 0 0)(position 15 10 5)))
;; block1
(entity:owner block1)
;; #[entity 2 1]
; Get the faces of the block.
(define faces1 (entity:faces block1))
;; faces1
; Get the coedges of one of the faces.
(define coedges1 (entity:coedges (list-ref faces1 0)))
;; coedges1
; coedges1 ==>
; #[entity 9 1] #[entity 10 1]
; #[entity 11 1] #[entity 12 1]
; Determine the previous coedge in the list.
(entity:previous (list-ref coedges1 0))
;; #[entity 12 1]