- Fixed issue #13361: Provided workaround for ext/GD bug:

  http://bugs.php.net/45552

4 files changed, 59 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 8061ba1..b9350b1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,8 @@
 - Implemented feature #11981: Provide option for exact axis label renderer to
   put last value outside of the normal label boundings
 - Fixed issue #13253: Division by zero when trying to render stacked bars.
+- Fixed issue #13361: Provided workaround for ext/GD bug:
+  http://bugs.php.net/45552
 
 1.3 - Monday 16 June 2008
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/src/driver/gd.php b/src/driver/gd.php
index 8f8a7f7..b0472e7 100644
--- a/src/driver/gd.php
+++ b/src/driver/gd.php
@@ -739,6 +739,28 @@ class ezcGraphGdDriver extends ezcGraphDriver
             $endAngle = $tmp;
         }
 
+        // Because of bug #45552 in PHPs ext/GD we check for a minimal distance
+        // on the outer border of the circle sector, and skip the drawing if
+        // the distance is lower then 1.
+        //
+        // See also: http://bugs.php.net/45552
+        $startPoint = new ezcGraphVector( 
+            $center->x + 
+                ( ( cos( deg2rad( $startAngle ) ) * $width ) / 2 ),
+            $center->y + 
+                ( ( sin( deg2rad( $startAngle ) ) * $height ) / 2 )
+        );
+        if ( $startPoint->sub( new ezcGraphVector( 
+                $center->x + 
+                    ( ( cos( deg2rad( $endAngle ) ) * $width ) / 2 ),
+                $center->y + 
+                    ( ( sin( deg2rad( $endAngle ) ) * $height ) / 2 )
+             ) )->length() < 1 )
+        {
+            // Skip this circle sector
+            return array();
+        }
+
         if ( $filled )
         {
             imagefilledarc( 
diff --git a/tests/data/compare/ezcGraphGdDriverTest_testDrawCircleSectorAcuteVerySmallBug13361.png b/tests/data/compare/ezcGraphGdDriverTest_testDrawCircleSectorAcuteVerySmallBug13361.png
new file mode 100644
index 0000000..89c1e12
--- /dev/null
+++ b/tests/data/compare/ezcGraphGdDriverTest_testDrawCircleSectorAcuteVerySmallBug13361.png
diff --git a/tests/driver_gd_test.php b/tests/driver_gd_test.php
index e01193a..256cbc5 100644
--- a/tests/driver_gd_test.php
+++ b/tests/driver_gd_test.php
@@ -389,6 +389,41 @@ class ezcGraphGdDriverTest extends ezcTestImageCase
         );
     }
 
+    public function testDrawCircleSectorAcuteVerySmallBug13361()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.png';
+
+        $return = $this->driver->drawCircleSector(
+            new ezcGraphCoordinate( 100, 50 ),
+            80,
+            40,
+            30,
+            30.1,
+            ezcGraphColor::fromHex( '#3465A4' )
+        );
+
+        $this->driver->render( $filename );
+
+        $this->assertTrue(
+            file_exists( $filename ),
+            'No image was generated.'
+        );
+
+        $this->assertImageSimilar(
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.png',
+            'Image does not look as expected.',
+            2000
+        );
+
+        $this->assertEquals(
+            $return,
+            array(),
+            'Expected empty point array as return value.',
+            1.
+        );
+    }
+
     public function testDrawCircleSectorAcuteNonFilled()
     {
         $filename = $this->tempDir . __FUNCTION__ . '.png';