- Use symbol as bottom shape for bars in 3d renderer

7 files changed, 282 insertions, 77 deletions

diff --git a/src/charts/line.php b/src/charts/line.php
index 02323e9..60b2e4b 100644
--- a/src/charts/line.php
+++ b/src/charts/line.php
@@ -174,6 +174,7 @@ class ezcGraphLineChart extends ezcGraphChart
                             $width,
                             $nr[$data->displayType->default],
                             $count[$data->displayType->default],
+                            $data->symbol[$key],
                             $yAxisNullPosition
                         );
                     }
diff --git a/src/interfaces/renderer.php b/src/interfaces/renderer.php
index 2549f00..9d6b850 100644
--- a/src/interfaces/renderer.php
+++ b/src/interfaces/renderer.php
@@ -57,6 +57,7 @@ abstract class ezcGraphRenderer
      * @param float $stepSize Space which can be used for bars
      * @param int $dataNumber Number of dataset
      * @param int $dataCount Count of datasets in chart
+     * @param int $symbol Symbol to draw for line
      * @param float $axisPosition Position of axis for drawing filled lines
      * @return void
      */
@@ -67,6 +68,7 @@ abstract class ezcGraphRenderer
         $stepSize,
         $dataNumber = 1,
         $dataCount = 1,
+        $symbol = ezcGraph::NO_SYMBOL,
         $axisPosition = 0.
     );
     
diff --git a/src/renderer/2d.php b/src/renderer/2d.php
index ed3ebff..86a0472 100644
--- a/src/renderer/2d.php
+++ b/src/renderer/2d.php
@@ -274,6 +274,7 @@ class ezcGraphRenderer2d extends ezcGraphRenderer
      * @param float $stepSize Space which can be used for bars
      * @param int $dataNumber Number of dataset
      * @param int $dataCount Count of datasets in chart
+     * @param int $symbol Symbol to draw for line
      * @param float $axisPosition Position of axis for drawing filled lines
      * @return void
      */
@@ -284,6 +285,7 @@ class ezcGraphRenderer2d extends ezcGraphRenderer
         $stepSize,
         $dataNumber = 1,
         $dataCount = 1,
+        $symbol = ezcGraph::NO_SYMBOL,
         $axisPosition = 0. )
     {
         // Apply margin
diff --git a/src/renderer/3d.php b/src/renderer/3d.php
index 2af00c3..74519dc 100644
--- a/src/renderer/3d.php
+++ b/src/renderer/3d.php
@@ -445,6 +445,7 @@ class ezcGraphRenderer3d extends ezcGraphRenderer
      * @param float $stepSize Space which can be used for bars
      * @param int $dataNumber Number of dataset
      * @param int $dataCount Count of datasets in chart
+     * @param int $symbol Symbol to draw for line
      * @param float $axisPosition Position of axis for drawing filled lines
      * @return void
      */
@@ -455,6 +456,7 @@ class ezcGraphRenderer3d extends ezcGraphRenderer
         $stepSize,
         $dataNumber = 1,
         $dataCount = 1,
+        $symbol = ezcGraph::NO_SYMBOL,
         $axisPosition = 0. )
     {
         // Apply margin
@@ -464,98 +466,224 @@ class ezcGraphRenderer3d extends ezcGraphRenderer
         $offset = - $stepSize / 2 + $margin / 2 + ( $dataCount - $dataNumber - 1 ) * ( $padding + $barWidth ) + $padding / 2;
 
         $startDepth = $this->options->barMargin;
+        $midDepth = .5;
         $endDepth = 1 - $this->options->barMargin;
 
-        $barPolygonArray = array(
-            new ezcGraphCoordinate( 
-                $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset,
-                $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
-            ),
-            new ezcGraphCoordinate( 
-                $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset,
-                $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
-            ),
-            new ezcGraphCoordinate( 
-                $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth,
-                $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
-            ),
-            new ezcGraphCoordinate( 
-                $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth,
-                $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
-            ),
-        );
+        switch ( $symbol )
+        {
+            case ezcGraph::NO_SYMBOL:
+                $barPolygonArray = array(
+                    new ezcGraphCoordinate( 
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset,
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                    ),
+                    new ezcGraphCoordinate( 
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset,
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                    ),
+                    new ezcGraphCoordinate( 
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth,
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                    ),
+                    new ezcGraphCoordinate( 
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth,
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                    ),
+                );
 
-        // Draw right bar side
-        $this->barPostProcessing[] = array(
-            'polygone' => array(
-                $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[3], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[3], $endDepth ),
-                $this->get3dCoordinate( $barPolygonArray[2], $endDepth ),
-            ),
-            'color' => $color->darken( $this->options->barDarkenSide ),
-        );
+                // Draw right bar side
+                $this->barPostProcessing[] = array(
+                    'index' => $barPolygonArray[2]->x,
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        array(
+                            $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[3], $startDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[3], $endDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[2], $endDepth ),
+                        ),
+                        $color->darken( $this->options->barDarkenSide ),
+                        true
+                    ),
+                );
 
-        // Draw bar top
-        $this->barPostProcessing[] = array(
-            'polygone' => array(
-                $this->get3dCoordinate( $barPolygonArray[1], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[2], $endDepth ),
-                $this->get3dCoordinate( $barPolygonArray[1], $endDepth ),
-            ),
-            'color' => $color->darken( $this->options->barDarkenTop ),
-        );
+                $this->barPostProcessing[] = array(
+                    'index' => $barPolygonArray[1]->x,
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        ( $barPolygonArray[1]->y < $barPolygonArray[3]->y
+                        ?   array(
+                                $this->get3dCoordinate( $barPolygonArray[1], $startDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[2], $endDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[1], $endDepth ),
+                            )
+                        :   array(
+                                $this->get3dCoordinate( $barPolygonArray[0], $startDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[3], $startDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[3], $endDepth ),
+                                $this->get3dCoordinate( $barPolygonArray[0], $endDepth ),
+                            )
+                        ),
+                        $color->darken( $this->options->barDarkenTop ),
+                        true
+                    ),
+                );
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barPolygonArray[1]->x,
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        array(
+                            $this->get3dCoordinate( $barPolygonArray[0], $startDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[1], $startDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
+                            $this->get3dCoordinate( $barPolygonArray[3], $startDepth ),
+                        ),
+                        $color,
+                        true
+                    ),
+                );
+                break;
+            case ezcGraph::DIAMOND:
+                $barCoordinateArray = array(
+                    // The bottom point of the diamond is moved to .7 instead 
+                    // of .5 because it looks more correct, even it is wrong...
+                    'x' => array(
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset,
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth * .7,
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth,
+                        $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth * .3,
+                    ),
+                    'y' => array(
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) ),
+                        $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) ),
+                    ),
+                );
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barCoordinateArray['x'][0],
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        array(
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][0], $barCoordinateArray['y'][0] ), $midDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][0], $barCoordinateArray['y'][1] ), $midDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][1], $barCoordinateArray['y'][1] ), $startDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][1], $barCoordinateArray['y'][0] ), $startDepth ),
+                        ),
+                        $color,
+                        true
+                    ),
+                );
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barCoordinateArray['x'][1],
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        array(
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][2], $barCoordinateArray['y'][0] ), $midDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][2], $barCoordinateArray['y'][1] ), $midDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][1], $barCoordinateArray['y'][1] ), $startDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][1], $barCoordinateArray['y'][0] ), $startDepth ),
+                        ),
+                        $color->darken( $this->options->barDarkenSide ),
+                        true
+                    ),
+                );
+
+                $topLocation = min(
+                    $barCoordinateArray['y'][0],
+                    $barCoordinateArray['y'][1]
+                );
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barCoordinateArray['x'][0],
+                    'method' => 'drawPolygon',
+                    'parameters' => array(
+                        array(
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][1], $topLocation ), $startDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][2], $topLocation ), $midDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][3], $topLocation ), $endDepth ),
+                            $this->get3dCoordinate( new ezcGraphCoordinate( $barCoordinateArray['x'][0], $topLocation ), $midDepth ),
+                        ),
+                        $color->darken( $this->options->barDarkenTop ),
+                        true
+                    ),
+                );
+                break;
+            case ezcGraph::BULLET:
+            case ezcGraph::CIRCLE:
+                $barCenterTop = new ezcGraphCoordinate(
+                    $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth / 2,
+                    $this->dataBoundings->y0 + $this->yAxisSpace + $position->y * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                    
+                );
+                $barCenterBottom = new ezcGraphCoordinate(
+                    $this->dataBoundings->x0 + $this->xAxisSpace + $position->x * ( $this->dataBoundings->x1 - ( $this->dataBoundings->x0 + 2 * $this->xAxisSpace ) ) + $offset + $barWidth / 2,
+                    $this->dataBoundings->y0 + $this->yAxisSpace + $axisPosition * ( $this->dataBoundings->y1 - ( $this->dataBoundings->y0 + 2 * $this->yAxisSpace ) )
+                );
+
+                if ( $barCenterTop->y > $barCenterBottom->y )
+                {
+                    $tmp = $barCenterTop;
+                    $barCenterTop = $barCenterBottom;
+                    $barCenterBottom = $tmp;
+                }
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barCenterBottom->x,
+                    'method' => 'drawCircularArc',
+                    'parameters' => array(
+                        $this->get3dCoordinate( $barCenterBottom, $midDepth ),
+                        $barWidth,
+                        $barWidth / 2,
+                        ( $barCenterTop->y - $barCenterBottom->y ) * $this->yDepthFactor,
+                        0,
+                        360,
+                        $color
+                    ),
+                );
+
+                $this->barPostProcessing[] = array(
+                    'index' => $barCenterBottom->x + 1,
+                    'method' => 'drawCircle',
+                    'parameters' => array(
+                        $this->get3dCoordinate( $barCenterTop, $midDepth ),
+                        $barWidth,
+                        $barWidth / 2,
+                        ( $symbol === ezcGraph::CIRCLE ? $color->darken( $this->options->barDarkenTop ) : $color )
+                    ),
+                );
+
+                break;
+        }
 
-        // Draw front side
-        $this->barPostProcessing[] = array(
-            'polygone' => array(
-                $this->get3dCoordinate( $barPolygonArray[0], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[1], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[2], $startDepth ),
-                $this->get3dCoordinate( $barPolygonArray[3], $startDepth ),
-            ),
-            'color' => $color,
-        );
     }
  
     protected function finishBars()
     {
-        $zBuffer = array();
-
-        foreach ( $this->barPostProcessing as $bar )
+        if ( !count( $this->barPostProcessing ) )
         {
-            $zIndex = (int) ( $bar['polygone'][0]->x * 10 );
-            if ( !isset( $zBuffer[$zIndex] ) )
-            {
-                $zBuffer[$zIndex] = array();
-            }
+            return true;
+        }
 
-            $zBuffer[$zIndex][] = $bar;
+        $zIndexArray = array();
+        foreach ( $this->barPostProcessing as $key => $barPolygon )
+        {
+            $zIndexArray[$key] = $barPolygon['index'];
         }
 
-        ksort( $zBuffer );
+        array_multisort(
+            $zIndexArray, SORT_ASC, SORT_NUMERIC,
+            $this->barPostProcessing
+        );
 
-        foreach ( $zBuffer as $bars )
+        foreach ( $this->barPostProcessing as $bar )
         {
-            foreach ( $bars as $bar )
-            {
-                $this->driver->drawPolygon(
-                    $bar['polygone'],
-                    $bar['color'],
-                    true
-                );
-
-                if ( $this->options->dataBorder > 0 )
-                {
-                    $borderColor = $bar['color']->darken( $this->options->dataBorder );
-                    $this->driver->drawPolygon(
-                        $bar['polygone'],
-                        $borderColor,
-                        false
-                    );
-                }
-            }
+            call_user_func_array(
+                array( $this->driver, $bar['method'] ),
+                $bar['parameters']
+            );
         }
     }
 
diff --git a/tests/data/compare/ezcGraphRenderer3dTest_testRenderBarChartSymbols.png b/tests/data/compare/ezcGraphRenderer3dTest_testRenderBarChartSymbols.png
new file mode 100644
index 0000000..b78fe71
--- /dev/null
+++ b/tests/data/compare/ezcGraphRenderer3dTest_testRenderBarChartSymbols.png
diff --git a/tests/data/compare/ezcGraphRenderer3dTest_testRenderNegativeBarChartSymbols.png b/tests/data/compare/ezcGraphRenderer3dTest_testRenderNegativeBarChartSymbols.png
new file mode 100644
index 0000000..9b8c284
--- /dev/null
+++ b/tests/data/compare/ezcGraphRenderer3dTest_testRenderNegativeBarChartSymbols.png
diff --git a/tests/renderer_3d_test.php b/tests/renderer_3d_test.php
index 7491169..c47faef 100644
--- a/tests/renderer_3d_test.php
+++ b/tests/renderer_3d_test.php
@@ -571,8 +571,10 @@ class ezcGraphRenderer3dTest extends ezcImageTestCase
 
         $chart->data['Line 0'] = new ezcGraphArrayDataSet( array( 'sample 1' => 432, 'sample 2' => 43, 'sample 3' => 65, 'sample 4' => 97, 'sample 5' => 154) );
         $chart->data['Line 0']->displayType = ezcGraph::BAR;
+        $chart->data['Line 0']->symbol = ezcGraph::NO_SYMBOL;
         $chart->data['Line 1'] = new ezcGraphArrayDataSet( array( 'sample 1' => 234, 'sample 2' => 21, 'sample 3' => 324, 'sample 4' => 120, 'sample 5' => 1) );
         $chart->data['Line 1']->displayType = ezcGraph::BAR;
+        $chart->data['Line 1']->symbol = ezcGraph::NO_SYMBOL;
 
         $chart->xAxis->axisLabelRenderer = new ezcGraphAxisBoxedLabelRenderer();
 
@@ -589,6 +591,76 @@ class ezcGraphRenderer3dTest extends ezcImageTestCase
         );
     }
 
+    public function testRenderBarChartSymbols()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.png';
+
+        $chart = new ezcGraphLineChart();
+        $chart->palette = new ezcGraphPaletteBlack();
+
+        $chart->data['Rectangle'] = new ezcGraphArrayDataSet( array( 'sample 1' => 432, 'sample 2' => 43, 'sample 3' => 65, 'sample 4' => 97, 'sample 5' => 154) );
+        $chart->data['Rectangle']->displayType = ezcGraph::BAR;
+        $chart->data['Rectangle']->symbol = ezcGraph::NO_SYMBOL;
+        $chart->data['Circle'] = new ezcGraphArrayDataSet( array( 'sample 1' => 234, 'sample 2' => 21, 'sample 3' => 324, 'sample 4' => 120, 'sample 5' => 1) );
+        $chart->data['Circle']->displayType = ezcGraph::BAR;
+        $chart->data['Circle']->symbol = ezcGraph::CIRCLE;
+        $chart->data['Bullet'] = new ezcGraphArrayDataSet( array( 'sample 1' => 124, 'sample 2' => 245, 'sample 3' => 361, 'sample 4' => 412, 'sample 5' => 480) );
+        $chart->data['Bullet']->displayType = ezcGraph::BAR;
+        $chart->data['Bullet']->symbol = ezcGraph::BULLET;
+        $chart->data['Diamond'] = new ezcGraphArrayDataSet( array( 'sample 1' => 387, 'sample 2' => 261, 'sample 3' => 24, 'sample 4' => 59, 'sample 5' => 112) );
+        $chart->data['Diamond']->displayType = ezcGraph::BAR;
+        $chart->data['Diamond']->symbol = ezcGraph::DIAMOND;
+
+        $chart->xAxis->axisLabelRenderer = new ezcGraphAxisBoxedLabelRenderer();
+
+        $chart->driver = new ezcGraphGdDriver();
+        $chart->renderer = new ezcGraphRenderer3d();
+        $chart->options->font = $this->basePath . 'font.ttf';
+        $chart->render( 700, 200, $filename );
+
+        $this->assertImageSimilar(
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.png',
+            'Image does not look as expected.',
+            2000
+        );
+    }
+
+    public function testRenderNegativeBarChartSymbols()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.png';
+
+        $chart = new ezcGraphLineChart();
+        $chart->palette = new ezcGraphPaletteBlack();
+
+        $chart->data['Rectangle'] = new ezcGraphArrayDataSet( array( 'sample -1' => -432, 'sample -2' => -43, 'sample -3' => -65, 'sample -4' => -97, 'sample -5' => -154) );
+        $chart->data['Rectangle']->displayType = ezcGraph::BAR;
+        $chart->data['Rectangle']->symbol = ezcGraph::NO_SYMBOL;
+        $chart->data['Circle'] = new ezcGraphArrayDataSet( array( 'sample -1' => -234, 'sample -2' => -21, 'sample -3' => -324, 'sample -4' => -120, 'sample -5' => -1) );
+        $chart->data['Circle']->displayType = ezcGraph::BAR;
+        $chart->data['Circle']->symbol = ezcGraph::CIRCLE;
+        $chart->data['Bullet'] = new ezcGraphArrayDataSet( array( 'sample -1' => -124, 'sample -2' => -245, 'sample -3' => -361, 'sample -4' => -412, 'sample -5' => -480) );
+        $chart->data['Bullet']->displayType = ezcGraph::BAR;
+        $chart->data['Bullet']->symbol = ezcGraph::BULLET;
+        $chart->data['Diamond'] = new ezcGraphArrayDataSet( array( 'sample -1' => -387, 'sample -2' => -261, 'sample -3' => -24, 'sample -4' => -59, 'sample -5' => -112) );
+        $chart->data['Diamond']->displayType = ezcGraph::BAR;
+        $chart->data['Diamond']->symbol = ezcGraph::DIAMOND;
+
+        $chart->xAxis->axisLabelRenderer = new ezcGraphAxisBoxedLabelRenderer();
+
+        $chart->driver = new ezcGraphGdDriver();
+        $chart->renderer = new ezcGraphRenderer3d();
+        $chart->options->font = $this->basePath . 'font.ttf';
+        $chart->render( 700, 200, $filename );
+
+        $this->assertImageSimilar(
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.png',
+            'Image does not look as expected.',
+            2000
+        );
+    }
+
     public function testRender3dLineChart()
     {
         $filename = $this->tempDir . __FUNCTION__ . '.png';