/**
* Resize the image
*
* @param int $new_x New width
* @param int $new_y New height
* @param array $options Optional parameters
*
* @return bool|PEAR_Error TRUE on success or PEAR_Error object on error
*
* @access protected
*/
function _resize($new_x, $new_y, $options = null)
{
if ($this->resized === true) {
return PEAR::raiseError('You have already resized the image without saving it.' . ' Your previous resizing will be overwritten', null, PEAR_ERROR_TRIGGER, E_USER_NOTICE);
}
if ($this->new_x == $new_x && $this->new_y == $new_y) {
return true;
}
$xFactor = $new_x / $this->img_x;
$yFactor = $new_y / $this->img_y;
$outputSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, $new_x, $new_y);
$outputContext = cairo_create($outputSurface);
cairo_scale($outputContext, $xFactor, $yFactor);
cairo_set_source_surface($outputContext, $this->surface, 0, 0);
cairo_paint($outputContext);
cairo_destroy($outputContext);
cairo_surface_destroy($this->surface);
$this->surface = $outputSurface;
$this->new_x = $new_x;
$this->new_y = $new_y;
return true;
}
/**
* 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)
{
$this->initiliazeSurface();
cairo_save($this->context);
// Draw circular arc path
$path = cairo_new_path($this->context);
cairo_translate($this->context, $center->x, $center->y);
cairo_scale($this->context, 1, $height / $width);
cairo_arc($this->context, 0.0, 0.0, $width / 2, 0, 2 * M_PI);
cairo_restore($this->context);
$this->getStyle($color, $filled);
cairo_stroke($this->context);
// 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;
}
