Y axis reverse and relative path fixes from Olivier Courtin.

git-svn-id: http://svn.osgeo.org/postgis/trunk@1039 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/lwgeom/lwgeom_svg.c b/lwgeom/lwgeom_svg.c
index 69e134f10db98a606a2284d9cf0913d215ec59a1..7bfadd5e24ecf7331821c71c617f52b5fb99db96 100644 (file)
--- a/lwgeom/lwgeom_svg.c
+++ b/lwgeom/lwgeom_svg.c
@@ -192,7 +192,7 @@ void print_svg_coords(char *result, POINT2D *pt, int precision)
 
        sprintf(x, "%.*f", precision, pt->x);
        trim_trailing_zeros(x);
-       sprintf(y, "%.*f", precision, pt->y);
+       sprintf(y, "%.*f", precision, pt->y * -1);
        trim_trailing_zeros(y);
 
        sprintf(temp, "x=\"%s\" y=\"%s\"", x, y);
@@ -211,7 +211,7 @@ void print_svg_circle(char *result, POINT2D *pt, int precision)
 
        sprintf(x, "%.*f", precision, pt->x);
        trim_trailing_zeros(x);
-       sprintf(y, "%.*f", precision, pt->y);
+       sprintf(y, "%.*f", precision, pt->y * -1);
        trim_trailing_zeros(y);
 
        sprintf(temp, "cx=\"%s\" cy=\"%s\"", x, y);
@@ -238,7 +238,7 @@ print_svg_path_abs(char *result, POINTARRAY *pa, int precision)
                }
                sprintf(x, "%.*f", precision, pt->x);
                trim_trailing_zeros(x);
-               sprintf(y, "%.*f", precision, pt->y);
+               sprintf(y, "%.*f", precision, pt->y * -1);
                trim_trailing_zeros(y);
                result+= sprintf(result,"%s %s", x, y);
        }
@@ -259,7 +259,7 @@ print_svg_path_rel(char *result, POINTARRAY *pa, int precision)
 
        sprintf(x, "%.*f", precision, pt->x);
        trim_trailing_zeros(x);
-       sprintf(y, "%.*f", precision, pt->y);
+       sprintf(y, "%.*f", precision, pt->y * -1);
        trim_trailing_zeros(y);
 
        result += sprintf(result,"%s %s l", x, y); 
@@ -268,9 +268,9 @@ print_svg_path_rel(char *result, POINTARRAY *pa, int precision)
        for (u=1; u<pa->npoints; u++)
        {
                pt = (POINT2D *)getPoint(pa, u);
-               sprintf(x, "%.*f", precision, pt->x);
+               sprintf(x, "%.*f", precision, pt->x - lpt->x);
                trim_trailing_zeros(x);
-               sprintf(y, "%.*f", precision, pt->y);
+               sprintf(y, "%.*f", precision, (pt->y - lpt->y) * -1);
                trim_trailing_zeros(y);
                result+= sprintf(result," %s %s", x, y);
                lpt = pt;
@@ -280,6 +280,9 @@ print_svg_path_rel(char *result, POINTARRAY *pa, int precision)
 
 /**********************************************************************
  * $Log$
+ * Revision 1.6  2004/10/25 14:20:57  strk
+ * Y axis reverse and relative path fixes from Olivier Courtin.
+ *
  * Revision 1.5  2004/10/15 11:48:48  strk
  * Fixed a bug making asSVG return a spurious char at the end.
  *