IritPrsrIsConvexPolygon

Section: C Library Functions (3)
Updated: IRIT Version 6.0
Index Return to Main Contents
 

NAME

IritPrsrIsConvexPolygon()  

SYNOPSIS

prsr_lib/iritprs2.c:599

int IritPrsrIsConvexPolygon(IPPolygonStruct *Pl)
 

DESCRIPTION

Routine to test if the given polygon is convex (by IRIT definition) or not. Algorithm: The polygon is convex iff the normals generated from cross products of two consecutive edges points to the same direction. The same direction is tested by a positive dot product.  

PARAMETERS:

Pl: To test for convexity.  

FUNCTION RETURN VALUE

int: TRUE if PL convex, FALSE otherwise.

 

ORIGIN

(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS:
FUNCTION RETURN VALUE
ORIGIN

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