20)
$colors[$i] = 0x00ff00;
else
$colors[$i] = 0xffff00;
}
$borderColor = 0x000000;
#chart width, margin and rotation angle
$chartWidth = 640;
$margin = 30;
$angle = 30;
$hFlip = true;
#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 + $x]);
#$d->text('5', 'arial.ttf', 8, ($leftX+$rightX)/2, $topY, 0x000);
}
}
$d->rotate($angle);
if ($hFlip)
$d->hflip();
$center = $chartWidth / 2;
$radAngle = 3.1415926536 / 180 * $angle;
for ($x = 0; $x < $width; ++$x) {
for ($y = 0; $y < $width; ++$y) {
$dx = $margin + $cellWidth * ($x + 0.5) - $center;
$dy = $margin + $cellWidth * ($y + 0.5) - $center;
$midX = $dx * cos($radAngle) + $dy * sin($radAngle) + $center;
$midY = -$dx * sin($radAngle) + $dy * cos($radAngle) + $center;
if ($hFlip) $midX = $chartWidth - $midX;
$t = $d->text3($y * $width + $x, "arial.ttf", 7)->draw($midX, $midY, 0x000000, Center);
}
}
#
#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);
#rotated arrows
$arrowSize = ($radius + $margin) * 4 / 10;
$c2 = new XYChart($arrowSize, $arrowSize, Transparent);
$c2->setPlotArea(2, 2, $arrowSize - 4, $arrowSize - 4, -1, -1, Transparent, Transparent);
$c2->xAxis->setLinearScale(0, 100, NoValue);
$c2->xAxis->setColors(Transparent, Transparent);
$c2->yAxis->setLinearScale(0, 100, NoValue);
$c2->yAxis->setColors(Transparent, Transparent);
$layer = $c2->addVectorLayer(array(50), array(50), array(50), array(($hFlip ? -1 : 1) * (90 - $angle)), XAxisScale, 0xcc0000);
$layer->setLineWidth(2);
$layer->setArrowHead(15);
$layer = $c2->addVectorLayer(array(50), array(50), array(50), array(($hFlip ? -1 : 1) * (-$angle)), XAxisScale, 0x00cc00);
$layer->setLineWidth(2);
$layer->setArrowHead(15);
$d->merge($c2->makeChart3(), 0, $c->getHeight() - 1, BottomLeft, 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()?>