system/Images/Handlers/ImageMagickHandler.php
public function _resize(bool $maintainRatio = false)
	{
		$source      = ! empty($this->resource) ? $this->resource : $this->image->getPathname();
		$destination = $this->getResourcePath();

		$escape = '\\';
		if (stripos(PHP_OS, 'WIN') === 0)
		{
			$escape = '';
		}

		$action = $maintainRatio === true ? ' -resize ' . $this->width . 'x' . $this->height . ' "' . $source . '" "' . $destination . '"' : ' -resize ' . $this->width . 'x' . $this->height . "{$escape}! \"" . $source . '" "' . $destination . '"';

		$this->process($action);

		return $this;
	}
public function _resize(bool $maintainRatio = false)
	{
		$source      = ! empty($this->resource) ? $this->resource : $this->image->getPathname();
		$destination = $this->getResourcePath();

		$escape = '\\';
		if (stripos(PHP_OS, 'WIN') === 0)
		{
			$escape = '';
		}

		$action = $maintainRatio === true ? ' -resize ' . $this->width . 'x' . $this->height . ' "' . $source . '" "' . $destination . '"' : ' -resize ' . $this->width . 'x' . $this->height . "{$escape}! \"" . $source . '" "' . $destination . '"';

		$this->process($action);

		return $this;
	}
Handles the actual resizing of the image.

@param boolean $maintainRatio

@return ImageMagickHandler
@throws \Exception