fixed a bug in is_clockwise...

git-svn-id: http://svn.osgeo.org/postgis/trunk@300 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/loader/pgsql2shp.c b/loader/pgsql2shp.c
index 714450e7a1b19b0eb26854efe1b0edbeea56e267..8895768f34a6b529352496272ed12c22991437c8 100644 (file)
--- a/loader/pgsql2shp.c
+++ b/loader/pgsql2shp.c
@@ -10,6 +10,9 @@
  * 
  **********************************************************************
  * $Log$
+ * Revision 1.20  2003/09/10 21:36:04  jeffloun
+ * fixed a bug in is_clockwise...
+ *
  * Revision 1.19  2003/07/01 18:30:55  pramsey
  * Added CVS revision headers.
  *
@@ -1411,14 +1414,14 @@ int is_clockwise(int  num_points,double *x,double *y,double *z){
        y_new = (double *)malloc(sizeof(double) * num_points);  
        area=0.0;
        x_change = x[0];
-       y_change = z[0];
+       y_change = y[0];
 
        for(i=0; i < num_points ; i++){
                x_new[i] = x[i] - x_change;
                y_new[i] = y[i] - y_change;
        }
 
-       for(i=0; i < num_points ; i++){
+       for(i=0; i < num_points - 1; i++){
                area += (x[i] * y[i+1]) - (y[i] * x[i+1]); //calculate the area 
        }
        if(area > 0 ){
@@ -1427,5 +1430,3 @@ int is_clockwise(int  num_points,double *x,double *y,double *z){
                return 1; //clockwise
        }
 }
-
-