From 423f69ab64a6e51fbdd97a83c1dc55d68ca6190d Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 24 Feb 2014 12:24:00 -0500
Subject: [PATCH] Allow single-point polygons to be converted to circles
This allows finding the center of a single-point polygon and converting
it to a point.
Per report from Josef Grahn
---
src/backend/utils/adt/geo_ops.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/src/backend/utils/adt/geo_ops.c b/src/backend/utils/adt/geo_ops.c
index f267920649a..72cb4e991fc 100644
--- a/src/backend/utils/adt/geo_ops.c
+++ b/src/backend/utils/adt/geo_ops.c
@@ -5191,7 +5191,7 @@ poly_circle(PG_FUNCTION_ARGS)
CIRCLE *circle;
int i;
- if (poly->npts < 2)
+ if (poly->npts < 1)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("cannot convert empty polygon to circle")));
@@ -5214,11 +5214,6 @@ poly_circle(PG_FUNCTION_ARGS)
circle->radius += point_dt(&poly->p[i], &circle->center);
circle->radius /= poly->npts;
- if (FPzero(circle->radius))
- ereport(ERROR,
- (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
- errmsg("cannot convert empty polygon to circle")));
-
PG_RETURN_CIRCLE_P(circle);
}
--
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