<?php

class faceapi
{
	public static function toMakeFaceBoundingBox($image_name,$BoundingBox,$destination_path){
		log_message('ERROR',"In faceapi helper @ line no : 6 to Make FaceBoundingBox");
		$get_image_format = explode(".",$image_name);
		$image_format = $get_image_format[1];
		log_message('ERROR','In faceapi helper @ line no : 9 to Make FaceBoundingBox image_format :'.$image_format);
		// print_r($get_image_format);die();
		$img = imagecreatefrompng($destination_path); 
		// if($image_format == 'png'){
		// 	$img = imagecreatefrompng($destination_path); 
		// }else if($image_format == 'jpeg'){
		// 	$img = imagecreatefromjpeg($destination_path); 
		// }else if($image_format == 'jpg'){
		// 	$img = imagecreatefromjpg($destination_path); 
		// }
		
		$red = imagecolorallocate($img, 255, 0, 0);
		$black = imagecolorallocate($img, 0, 0, 0);
		$white = imagecolorallocate($img, 255, 255, 255);
		
		list($imagewidth, $imageheight) = getimagesize($destination_path);
		log_message('ERROR','In faceapi helper @ line no : 25 to Make FaceBoundingBox  image_width'.$imagewidth.'image_height'.$imageheight);
		for($i=0;$i<count($BoundingBox);$i++){	
		
		$Left_coordinate = ($BoundingBox[$i]['Left'] * $imagewidth) ;
		$Top_coordinate = ($BoundingBox[$i]['Top']  * $imageheight) ;
		$Face_width = ($BoundingBox[$i]['Width']  * $imagewidth) ;
		$Face_height = ($BoundingBox[$i]['Height']  * $imageheight) ;
		$Similarity = $BoundingBox[$i]['Similarity'];

		$x1 = $Left_coordinate;
		$y1 = $Top_coordinate;
		
		self::DrawLine($x1,$y1,$Face_width,$Face_height,$Similarity,$img,$destination_path);
		
		}
		
		
	}

	public static function DrawLine($x1,$y1,$Face_width,$Face_height,$Similarity,$img,$destination_path){
		log_message('ERROR','In faceapi helper @ line no : 45  Draw Line x1 : '.$x1.' y1 : '.$y1.' Face_width : '.$Face_width.' Face_height : '.$Face_height.' Similarity : '.$Similarity.' img : '.$img.' destination_path : '.$destination_path);
		$Similarity_split = explode(".",$Similarity);
		$Similarity_value = $Similarity_split[0];
		list($imagewidth, $imageheight) = getimagesize($destination_path);
		if($Similarity_value >= 70 ){// above 70  green
			$color = imagecolorallocate($img, 0, 153, 0);
		}else if($Similarity_value < 70 ){// below 70  red
			$color = imagecolorallocate($img, 255, 0, 0);
		}
		$white = imagecolorallocate($img, 255, 255, 255);
		log_message('ERROR','In faceapi helper @ line no : 45  Draw Line color : '.$color);
		$Similarity = $Similarity_value." %";	
		//TOP LINe
		$t_x1 = $x1;
		$t_y1 = $y1;
		$t_x2 = ($x1+$Face_width);
		$t_y2 = $y1;
		
		//bottom line
		$b_x1 = $x1;
		$b_y1 = ($y1+$Face_height);
		$b_x2 = ($x1+$Face_width);
		$b_y2 = ($y1+$Face_height);

		 $imgl = self::imagelinethick($img,$t_x1,$t_y1,$t_x2,$t_y2,$color,7);//top line
		 $imgl = self::imagelinethick($img,$b_x1,$b_y1,$b_x2,$b_y2,$color,7);//bottom line
		 $imgl = self::imagelinethick($img,$t_x1,$t_y1,$b_x1,$b_y1,$color,7);//left line
		 $imgl = self::imagelinethick($img,$t_x2,$t_y2,$b_x2,$b_y2,$color,7);//right line
		//  apppath / doc la roboto.tff
		 $font = APPPATH."docs/roboto.ttf";
		 // imagettftext($img, 20, 0, ($t_x1), ($t_y1-5), $color,$font, $Similarity);
		//  imagepng($img, $destination_path); 
		//  imagepng($img, "face4.png");
	    // imagefilledrectangle($img, $t_x1-5, $t_y1-18, $t_x1+28, $t_y1, $white);
		// imagettftext($img, 10, 10, ($t_x1), ($t_y1-5), $color,$font, $Similarity);
			imagefilledrectangle($img, $t_x1-5, $t_y1-30, $t_x1+60, $t_y1, $white);
		 	imagettftext($img, 17, 8, ($t_x1), ($t_y1-5), $color,$font, $Similarity);
		
		$get_image_format = explode(".",$destination_path);
		$image_format = $get_image_format[1];

		if($image_format == 'png'){
			imagepng($img, $destination_path); 
		}else if($image_format == 'jpeg'){
			imagejpeg($img, $destination_path); 
		}else if($image_format == 'jpg'){
			// $destination_path = $get_image_format[0].".jpeg";
			imagejpg($img, $destination_path); 
		}

	}

	public static function imagelinethick($image, $x1, $y1, $x2, $y2, $color, $thick = 1)
{
    /* this way it works well only for orthogonal lines
    imagesetthickness($image, $thick);
    return imageline($image, $x1, $y1, $x2, $y2, $color);
    */
    if ($thick == 1) {
        return imageline($image, $x1, $y1, $x2, $y2, $color);
    }
    $t = $thick / 2 - 0.5;
    if ($x1 == $x2 || $y1 == $y2) {
        return imagefilledrectangle($image, round(min($x1, $x2) - $t), round(min($y1, $y2) - $t), round(max($x1, $x2) + $t), round(max($y1, $y2) + $t), $color);
    }
    $k = ($y2 - $y1) / ($x2 - $x1); //y = kx + q
    $a = $t / sqrt(1 + pow($k, 2));
    $points = array(
        round($x1 - (1+$k)*$a), round($y1 + (1-$k)*$a),
        round($x1 - (1-$k)*$a), round($y1 - (1+$k)*$a),
        round($x2 + (1+$k)*$a), round($y2 - (1-$k)*$a),
        round($x2 + (1-$k)*$a), round($y2 + (1+$k)*$a),
    );
    imagefilledpolygon($image, $points, 4, $color);
    return imagepolygon($image, $points, 4, $color);
}


}
?>