/**
* 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 $width = 64; $height = 64; $sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height); $con = new CairoContext($sur); $con->newPath(); $con->arc($width / 2, $height / 2, $width / 3, 0, 2 * M_PI); $con->clip(); $con->newPath(); $con->moveTo(0, 0); $con->lineTo($width / 4, $height / 2); $con->lineTo(0, $height); $con->lineTo($width, $height); $con->lineTo(3 * $width / 4, $height / 2); $con->lineTo($width, 0); $con->closePath(); $con->clip(); $con->setSourceRgb(0, 0, 0.6); $con->newPath(); $con->moveTo(0, 0); $con->lineTo(0, $height); $con->lineTo($width / 2, 3 * $height / 4); $con->lineTo($width, $height); $con->lineTo($width, 0); $con->lineTo($width / 2, $height / 4); $con->closePath(); $con->fill(); $con->newPath(); $con->arc($width / 2, $height / 2, $width / 5, 0, 2 * M_PI); $con->clip();
