gEDA-cvs: pcb.git: branch: master updated (5f3ed7cc41b8033c85f9ac6e2f664f1d0749e13e)

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=========
 Summary
=========

 src/hid/png/png.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)


=================
 Commit Messages
=================

commit 5f3ed7cc41b8033c85f9ac6e2f664f1d0749e13e
Author: Newell Jensen <pillar2012@xxxxxxxxx>
Commit: Krzysztof KoÅ?ciuszkiewicz <k.kosciuszkiewicz@xxxxxxxxx>

    hid/png: draw zero-length arcs properly on export
    
    Closes-bug: lp-699314
    Reviewed-by: Patrick Bernaud <patrickb@xxxxxxxx>
    Reviewed-by: Krzysztof KoÅ?ciuszkiewicz <k.kosciuszkiewicz@xxxxxxxxx>

:100644 100644 06d4296... fe7046e... M	src/hid/png/png.c

=========
 Changes
=========

commit 5f3ed7cc41b8033c85f9ac6e2f664f1d0749e13e
Author: Newell Jensen <pillar2012@xxxxxxxxx>
Commit: Krzysztof KoÅ?ciuszkiewicz <k.kosciuszkiewicz@xxxxxxxxx>

    hid/png: draw zero-length arcs properly on export
    
    Closes-bug: lp-699314
    Reviewed-by: Patrick Bernaud <patrickb@xxxxxxxx>
    Reviewed-by: Krzysztof KoÅ?ciuszkiewicz <k.kosciuszkiewicz@xxxxxxxxx>

diff --git a/src/hid/png/png.c b/src/hid/png/png.c
index 06d4296..fe7046e 100644
--- a/src/hid/png/png.c
+++ b/src/hid/png/png.c
@@ -33,6 +33,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#include <math.h>
 
 #include "global.h"
 #include "data.h"
@@ -1405,6 +1406,20 @@ png_draw_arc (hidGC gc, int cx, int cy, int width, int height,
 {
   int sa, ea;
 
+  /*
+   * zero angle arcs need special handling as gd will output either
+   * nothing at all or a full circle when passed delta angle of 0 or 360.
+   */
+  if (delta_angle == 0) {
+    double r = width;
+    int x = (int) (r * cos (start_angle * M_PI / 180));
+    int y = (int) (r * sin (start_angle * M_PI / 180));
+    x = cx - x;
+    y = cy + y;
+    png_fill_circle (gc, x, y, gc->width / 2);
+    return;
+  }
+
   /* 
    * in gdImageArc, 0 degrees is to the right and +90 degrees is down
    * in pcb, 0 degrees is to the left and +90 degrees is down



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