SchemeExt:Face:spline?

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

Action

Determines if a Scheme object is a spline face.

Filename

scm/scmext/kern/qfac_scm.cpp

APIs

None

Syntax

(face:spline? object)

Argument Types

Argument	Scheme Data Type
object	scheme-object

Returns

boolean

Description

This extension returns #t if the specified object is a spline face; that is, the object is a face whose underlying geometry is a spline.

Arguments

• object specifies the scheme-object that has to be queried for a spline face.

Example

; face:spline
; Define a spline edge 1.
(define e1 (edge:spline (list (position 0 0 0)(position 20 -20 0) (position 20 0 0))))
;; e1
; Define linear edge 2.
(define e2 (edge:linear (position 20 0 0)(position 20 20 0)))
;; e2
; Define linear edge 3.
(define e3 (edge:linear (position 20 20 0)(position 0 20 0)))
;; e3
; Define linear edge 4.
(define e4 (edge:linear (position 0 20 0)(position 0 0 0)))
;; e4
; Define a wire body from the spline and linear edges.
(define w (wire-body (list e1 e2 e3 e4)))
;; w
; Create a solid by sweeping a planar wire along a vector.
(define ws (solid:sweep-wire w (gvector 0 0 20)))
;; ws
; Get the faces of the solid.
(define faces (entity:faces ws))
;; faces
; Try to create spline body for the face that is not a spline face
(define body1 (face:spline (car (cdr faces))))
;;*** Error face:spline: wrong argument type entity (expected spline face)
; Try to create spline body for a spline face
(define body1 (face:spline (car (cdr (cdr (cdr faces))))))
;; body1