20)
$colors[$i] = 0x00ff00;
else
$colors[$i] = 0xffff00;
}
$borderColor = 0x000000;
#chart width, margin and rotation angle
$chartWidth = 600;
$margin = 10;
$angle = 30;
#compute cell size and adjust chart width to a multiple of cell size
$cellWidth = ($chartWidth - $margin * 2) / $width;
$chartWidth = $cellWidth * $width + $margin * 2;
#plot the cells
$c = new XYChart($chartWidth, $chartWidth);
$d = $c->getDrawArea();
for ($x = 0; $x < $width; ++$x) {
for ($y = 0; $y < $width; ++$y) {
$leftX = $margin + $cellWidth * $x;
$topY = $margin + $cellWidth * $y;
$rightX = $leftX + $cellWidth;
$bottomY = $topY + $cellWidth;
$d->rect($leftX, $topY, $rightX, $bottomY, $borderColor, $colors[$y * $width + $x]);
}
}
#rotate the chart
$d->rotate($angle);
#
#clip to a circle
#
$mask = new DrawArea();
$mask->setSize($chartWidth, $chartWidth, Transparent);
$radius = $cellWidth * $width / 2;
$mask->circle($margin + $radius, $margin + $radius, $radius, $radius, 0x000000, Transparent);
$mask->fill(0, 0, 0xffffff);
$d = $c->makeChart3();
$d->merge($mask, 0, 0, TopLeft, 0);
#output the chart using the WebChartViewer
$viewer = new WebChartViewer("chart1");
#output the chart
$chartQuery = $c->makeSession($viewer->getId());
#set the chart URL to the viewer
$viewer->setImageUrl("getchart.php?".$chartQuery);
#output Javascript chart model to the browser to support mouse events
$viewer->setChartModel($c->getJsChartModel());
?>
renderHTML()?>