CPLbuffer

by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - CPL/Closed Polygon Lists
Introduced first in SolidGeometry 4.3, Creation date: 2018-10-30, Last change: 2025-09-14

grows shrinks a CPL

Description

ATTENTION in contrast to CPLgrow, this function uses polyshape and polybuffer. Both functions change the order of the points within a cpl and also the orientation to always clock-wise (cw) !
1st contour is cw, next inter ccw then cw and so on.

See Also: CPLofPLgrow , CPLofPLgrowline , PLonCPLcontour

Example Illustration

missing image of CPLbuffer(CPL,d,typ);

Syntax

CPLN=CPLbuffer(CPL,d,[typ]);

Input Parameter

CPL: Closed Polygon line line
d: Shifting distance
typ: 'round'Round out ,'square'Square off, 'miter'Preserve angle

Output Parameter

CPLN: Closed Polygon line

Examples


CPLbuffer(PLstar(10),1);
CPLbuffer(CPLsample(12),+3);
CPLbuffer(CPLsample(12),+3,'round');
CPLbuffer(CPLsample(10),1)



Copyright 2018-2025 Tim C. Lueth. All rights reserved. The code is the property of Tim C. Lueth and may not be redistributed or modified without explicit written permission. This software may be used free of charge for academic research and teaching purposes only. Commercial use, redistribution, modification, or reverse engineering is strictly prohibited. Access to source code is restricted and granted only under specific agreements. For licensing inquiries or commercial use, please contact: Tim C. Lueth

Last html export of this page out of FM database by TL: 2025-09-21