Generator::generate()

	public function generate() {
		if ( ! function_exists( 'imagecreatetruecolor' ) || $this->avatar_exists() ) {
			return;
		}

		$font  = ap_get_theme_location( 'avatar-fonts/' . ap_opt( 'avatar_font' ) . '.ttf' );
		$words = explode( ' ', $this->name );
		$text  = '';

		foreach ( $words as $w ) {
			$text .= strtoupper( $w[0] );
		}

		$text = preg_replace( '~^(&([a-zA-Z0-9]);)~', htmlentities( '${1}' ), $text );

		// Convert hex code to RGB.
		$text_color = $this->hex_to_rgb( $this->text_color );

		$im         = imagecreatetruecolor( 90, 90 );
		$text_color = imagecolorallocate( $im, $text_color['r'], $text_color['g'], $text_color['b'] );

		// Random background Colors.
		$color_key = array_rand( $this->colors );

		$bg_color = $this->colors[ $color_key ];
		$this->image_gradientrect( $im, $bg_color, $this->color_luminance( $bg_color, 0.10 ) );
		list($x, $y) = $this->image_center( $im, $text, $font, $this->font_size );
		imagettftext( $im, $this->font_size, 0, $x, $y, $text_color, $font, $text );

		if ( imagejpeg( $im, $this->filepath(), 90 ) ) {
			imagedestroy( $im );
		}
	}