function image_transform(&$img, $matrix)
{
$old = $img;
$new = imageaffine($old, $matrix);
imagedestroy($old);
$img = $new;
}
* Time: 9:54
*/
//使用gd创建动态png图像
//header("Content-type:image/png");
//$str = $_GET[ 'text' ];
//$im = imagecreatefrompng('./2.png');
//$colored = imagecolorallocate($im, 220, 20, 60);
//$px = (imagesx($im) - 7.5 * (strlen($str))) / 2;
//imagestring($im, 9, $px, 9, $str, $colored);
//imagepng($im);
//
//imagedestroy($im);
//gd_info();
//getimagesize();
//var_dump(getimagesize('./2.png'));
//echo image_type_to_extension(IMAGETYPE_PNG);
$im = imagecreatefrompng('./2.png');
$type = exif_imagetype('./2.png');
//echo $type;
//header('Content-type:'.image_type_to_mime_type($type));
//image2wbmp($im,'test.png');
try {
// (PHP 5 >= 5.5.0, PHP 7)
$affine = imageaffine($im, array(10, 10, 10, 10, 10), array('x' => 10, 'y' => 10, 'width' => 10, 'height' => 10));
} catch (\Think\Exception $ex) {
echo $ex->getMessage();
}
var_dump($affine);
imagepng($affine);
imagedestroy($affine);
imagedestroy($im);
<?php
$base_img = tempnam('/tmp', 'test-imageaffine');
$tgt_img = tempnam('/tmp', 'test-imageaffine');
$toDelete = [$base_img, $tgt_img];
$arrAffine = [[1, 0, 0, 1, 0, 0], [1, 0, 0, 1, 150, 0], [1.2, 0, 0, 0.6, 0, 0], [-1.2, 0, 0, -0.6, 0, 0], [1, 2, 0, 1, 0, 0], [2, 1, 0, 1, 0, 0], [cos(15), sin(15), -sin(15), cos(15), 0, 0], [cos(15), -sin(15), sin(15), cos(15), 0, 0]];
$RSR_base = imagecreatetruecolor(400, 300);
$w = imagesx($RSR_base);
$h = imagesy($RSR_base);
$arrClip = ['x' => 0, 'y' => 0, 'width' => $w, 'height' => $h];
$fillcolor = imagecolorallocate($RSR_base, 0, 0, 0);
imagefill($RSR_base, 10, 10, $fillcolor);
imagepng($RSR_base, $base_img);
var_dump(md5_file($base_img));
$drawcolor = imagecolorallocate($RSR_base, 255, 0, 0);
$triangle = [50, 50, 50, 150, 200, 150];
$points = 3;
imageantialias($RSR_base, 1);
$drawtriangle = imagefilledpolygon($RSR_base, $triangle, $points, $drawcolor);
imagepng($RSR_base, $tgt_img);
var_dump(md5_file($tgt_img));
foreach ($arrAffine as $aff) {
$dst = tempnam('/tmp', 'test-imageaffine');
$toDelete[] = $dst;
$RSRaff2 = imageaffine($RSR_base, $aff, $arrClip);
imagepng($RSRaff2, $dst, 9);
var_dump(md5_file($dst));
}
foreach ($toDelete as $file) {
@unlink($file);
}
