기울기에 따른 imageftbbox 결과값에 대한 비교

그동안 있었던 궁금증이 좀 풀렸습니다. 감사합니다.

네 그랫군요.
다행입니다.

예제 바로보기: https://dbckdghk-c9-terrorboy.c9.io/study/study3.php

c9.io를 위하여 수정된 소스 <php 본문내에서 ?>로 닫았다 <?php로 여는것을 허용 안됨에 따라 수정>
// 허용 불가 if, for, foreach 등 php문을 닫았다 열수 없음.(표준 방법에 위배 라네요.)
[code]
<?php
header("Content-Type: text/html; charset=UTF-8");

$font_file = './Daum_Regular.ttf';
$font_size = 40;
$string = 'FaggM';
$angles = Array(0, 45, 90, 135, 180, 225, 270, 315, -45, -90, -135, -180, -225, -270, -315);



//그래프를 그리기 위한 용도
$graph_size = 200;
$graph_font_size = 10;



foreach($angles as $k => $angle){

//그래프용
$im = imagecreatetruecolor($graph_size * 2, $graph_size * 2);
$red = imagecolorallocate($im, 0xFF, 0x00, 0x00);
$blue = imagecolorallocate($im, 0x00, 0x80, 0xFF);
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($im, 0x00, 0x00, 0x00);

imagefilledrectangle($im, 0, 0, ($graph_size * 2) - 1, ($graph_size * 2) - 1, $white);
imageline ( $im , $graph_size , 0 , $graph_size, ($graph_size * 2) - 1 , $blue);//세로선
imageline ( $im , 0 , $graph_size , ($graph_size * 2) - 1, $graph_size , $blue);//가로선

imagefttext($im, $graph_font_size, 0, 185, 220, $black, $font_file, '0');
imagefttext($im, $graph_font_size, 0, 135, 20, $black, $font_file, 'Y축 음수');
imagefttext($im, $graph_font_size, 0, 135, 390, $black, $font_file, 'Y축 양수');
imagefttext($im, $graph_font_size, 0, 10, 220, $black, $font_file, 'X축 음수');
imagefttext($im, $graph_font_size, 0, 340, 220, $black, $font_file, 'X축 양수');



echo "<strong>기울기가 {$angle}도 일때</strong><br><br>" . PHP_EOL;

$array = imageftbbox ( $font_size, $angle, $font_file, $string );

print_r($array);
echo "<br><br>" . PHP_EOL;

// $graph_size 을 더한것은 그래프상에서 보여주기 위해서
imageline ( $im , $array[0] + $graph_size , $array[1] + $graph_size , $array[2] + $graph_size, $array[3] + $graph_size , $blue);
imageline ( $im , $array[2] + $graph_size , $array[3] + $graph_size , $array[4] + $graph_size, $array[5] + $graph_size , $blue);
imageline ( $im , $array[4] + $graph_size , $array[5] + $graph_size , $array[6] + $graph_size, $array[7] + $graph_size , $blue);
imageline ( $im , $array[6] + $graph_size , $array[7] + $graph_size , $array[0] + $graph_size, $array[1] + $graph_size , $blue);

$x_min = min($array[0], $array[2], $array[4], $array[6]) * -1;
$y_min = min($array[1], $array[3], $array[5], $array[7]) * -1;

//전부 양수가 되도록 오른쪽, 하단으로 밀어내림
imageline ( $im , $array[0] + $x_min + $graph_size , $array[1] + $y_min + $graph_size , $array[2] + $x_min + $graph_size, $array[3] + $y_min + $graph_size , $black);
imageline ( $im , $array[2] + $x_min + $graph_size , $array[3] + $y_min + $graph_size , $array[4] + $x_min + $graph_size, $array[5] + $y_min + $graph_size , $black);
imageline ( $im , $array[4] + $x_min + $graph_size , $array[5] + $y_min + $graph_size , $array[6] + $x_min + $graph_size, $array[7] + $y_min + $graph_size , $black);
imageline ( $im , $array[6] + $x_min + $graph_size , $array[7] + $y_min + $graph_size , $array[0] + $x_min + $graph_size, $array[1] + $y_min + $graph_size , $black);

imagefttext($im, $font_size, $angle, $array[0] + $x_min + $graph_size, $array[1] + $y_min + $graph_size, $red, $font_file, $string);

imagepng($im, 'temp/study3_' . ($k + 1) . '.png');
imagedestroy($im);

$img_num = $k + 1;
$img_time = time();
echo "<br>
<img src='temp/study3_{$img_num}.png?{$img_time}'>
<br><br>";
}

?>
[/code]

어 그래.
고마워