/**
* Draw circle
*
* @param ezcGraphCoordinate $center Center of ellipse
* @param mixed $width Width of ellipse
* @param mixed $height height of ellipse
* @param ezcGraphColor $color Color
* @param mixed $filled Filled
* @return void
*/
public function drawCircle(ezcGraphCoordinate $center, $width, $height, ezcGraphColor $color, $filled = true)
{
$this->initiliazeSurface();
$this->context->save();
// Draw circular arc path
$this->context->newPath();
$this->context->translate($center->x, $center->y);
$this->context->scale(1, $height / $width);
$this->context->arc(0.0, 0.0, $width / 2, 0, 2 * M_PI);
$this->context->restore();
$this->getStyle($color, $filled);
$this->context->stroke();
// Create polygon array to return
$polygonArray = array();
for ($angle = 0; $angle < 2 * M_PI; $angle += deg2rad($this->options->imageMapResolution)) {
$polygonArray[] = new ezcGraphCoordinate($center->x + cos($angle) * $width / 2, $center->y + sin($angle) * $height / 2);
}
return $polygonArray;
}
<?php
$sur = new CairoImageSurface(CairoFormat::ARGB32, 120, 100);
$con = new CairoContext($sur);
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->setSourceRgb(0, 0, 0);
$con->setMiterLimit(100000);
for ($xscale = 1; $xscale <= 1000; $xscale += 999) {
for ($yscale = 1; $yscale <= 1000; $yscale += 999) {
//$max_scale = ($xscale > $yscale) ? $xscale : $yscale;
$max_scale = max($xscale, $yscale);
$con->save();
if ($xscale > 1) {
$con->translate(50, 0);
}
if ($yscale > 1) {
$con->translate(0, 50);
}
$con->scale($xscale, $yscale);
$con->setLineWidth(10.0 / $max_scale);
$con->moveTo(10.0 / $xscale, 10.0 / $yscale);
$con->lineTo(40.0 / $xscale, 10.0 / $yscale);
$con->lineTo(10.0 / $xscale, 30.0 / $yscale);
$con->stroke();
$con->restore();
}
}
$sur->writeToPng(dirname(__FILE__) . "/miter-precision-php.png");
$con->lineTo($x, $y + $height);
$con->clip();
switch ($i) {
case 0:
$wi = floor($width * 0.9);
$he = floor($height * 0.9);
$x += 0.05 * $width;
$y += 0.05 * $height;
//$stemp = $con->get_group_target();
$msur = $sur->createSimilar(CairoContent::ALPHA, $wi, $he);
$c2 = new CairoContext($msur);
$c2->save();
$c2->setSourceRgba(0, 0, 0, 0);
$c2->setOperator(CairoOperator::SOURCE);
$c2->paint();
$c2->restore();
$c2->setSourceRgb(1, 1, 1);
$c2->arc(0.5 * $wi, 0.5 * $he, 0.45 * $he, 0, 2 * M_PI);
$c2->fill();
//unset($c2);
$con->maskSurface($msur, $x, $y);
//unset($msur);
//unset($stemp);
break;
case 1:
$con->setFontSize(0.9 * $height);
$ext = $con->textExtents("FG");
$con->moveTo($x + floor(($width - $ext["width"]) / 2 + 0.5) - $ext["x_bearing"], $y + floor(($height - $ext["height"]) / 2 + 0.5) - $ext["y_bearing"]);
$con->showText("FG");
break;
case 2:
