diff options
Diffstat (limited to 'generic/tkTrig.c')
| -rw-r--r-- | generic/tkTrig.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/generic/tkTrig.c b/generic/tkTrig.c index d0afe90..b8a88e7 100644 --- a/generic/tkTrig.c +++ b/generic/tkTrig.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkTrig.c,v 1.3 1999/04/16 01:51:24 stanton Exp $ + * RCS: @(#) $Id: tkTrig.c,v 1.4 1999/12/14 06:52:33 hobbs Exp $ */ #include <stdio.h> @@ -1066,6 +1066,14 @@ TkMakeBezierCurve(canvas, pointPtr, numPoints, numSteps, xPoints, dblPoints) * just put the first point into the output. */ + if (!pointPtr) { + /* Of pointPtr == NULL, this function returns an upper limit. + * of the array size to store the coordinates. This can be + * used to allocate storage, before the actual coordinates + * are calculated. */ + return 1 + numPoints * numSteps; + } + outputPoints = 0; if ((pointPtr[0] == pointPtr[numCoords-2]) && (pointPtr[1] == pointPtr[numCoords-1])) { |