gd

问题 Code: <?php header("Content-type: image/png"); $hue = rand(0, 360); $sat = rand(80,100); $lum = rand(50,100); $hue /= 360; $sat /= 100; $lum /= 100; $result = ColorHSLToRGB($hue, $sat, $lum); $col1 = sprintf('%02x', $result['r']) . sprintf('%02x', $result['g']) . sprintf('%02x', $result['b']); $hue2 = $hue + ((mt_rand() / mt_getrandmax()) / 10) - 0.5; $sat2 = $sat + ((mt_rand() / mt_getrandmax()) / 10) - 0.5; $lum2 = $lum + ((mt_rand() / mt_getrandmax()) / 10) - 0.5; $result2 = ColorHSLToRGB(

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I'm trying to find a real time image processing tool that can do image resizing, image/text overlaying and format converting. I found some related posts but they don't quite answer my question. Prioritized criteria for the tool: The processing time needs to be less than 100 ms. The size of output image needs to

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I'm trying to find a real time image processing tool that can do image resizing, image/text overlaying and format converting. I found some related posts but they don't quite answer my question. Prioritized criteria for the tool: The processing time needs to be less than 100 ms. The size of output image needs to

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I'm trying to find a real time image processing tool that can do image resizing, image/text overlaying and format converting. I found some related posts but they don't quite answer my question. Prioritized criteria for the tool: The processing time needs to be less than 100 ms. The size of output image needs to

问题 Here's my current code: define('IMG_WIDTH', (isset ($_GET['width'])) ? (int) $_GET['width'] : 99); define('IMG_HEIGHT', (isset ($_GET['height'])) ? (int) $_GET['height'] : 75); $image = imagecreatefromjpeg($_GET['image']); $origWidth = imagesx($image); $origHeight = imagesy($image); $croppedThumb = imagecreatetruecolor(IMG_WIDTH, IMG_HEIGHT); if ($origWidth > $origHeight) { $leftOffset = ($origWidth - $origHeight) / 2; imagecopyresampled($croppedThumb, $image, 0, 0, $leftOffset, 0, IMG_WIDTH,

问题 A border appears when rotating image with gd + php and I do not know what I did wrong. <?php $size = 900; $img = imagecreate($size, $size); imagesavealpha($img, true); $color = imagecolorallocatealpha($img, 0, 0, 0, 127); imagefill($img, 0, 0, $color); $lines_color = imagecolorallocate($img, 0, 0, 0); imageline($img, ($size * 0.50), ($size * 0.00), ($size * 0.50), ($size * 1.00), $lines_color); imageline($img, ($size * 0.20), ($size * 0.00), ($size * 0.80), ($size * 1.00), $lines_color);

问题 I need to first resize an image proportionally (the width is the important dimension) and then crop afterwards to chop of any excess height and then store the new version in a directory. I've managed to do the resizing fine and I end up with images that are the correct width in my directory. Somehwere in here I need to crop the excess height off. But I can't work out where I need to do it. Do I need to use copyimageresampled somehow. I want to crop all images so they're 50px in height. Here's

问题 It's my first time using the function ImageCopyResampled. I just followed the code written in the PHP manual. There seemed to be no errors when I ran the code. The problem is my code just basically copies the original image and did not follow the dimensions as it was defined in the parameters passed in the function. Below is my code: public static function uploadFile($filename, $x_dimension, $y_dimension, $width, $height){ $file = DOCROOT . "uploads/temp/".$filename; $trgt_file = DOCROOT .

问题 I've been bashing my head agains something simple.. // ....all prev code is fine.... $pasteboard =imagecreatetruecolor($imgs['bg']["width"],$imgs['bg']["height"]); imagealphablending($pasteboard, false); imagecopyresampled($pasteboard, $imgs['bg']["img"],0,0,0,0,$imgs['bg']["width"],$imgs['bg']["width"],imagesx($imgs['bg']["img"]),imagesy($imgs['bg']["img"])); imagecopyresampled($pasteboard, $imgs['photo']["img"],20,20,0,0,$imgs['photo']["width"],$imgs['photo']["width"],imagesx($imgs['photo']

问题 EDIT Thanks for all your answers, especially @Mailerdaimon who noticed that I wasn't using the computed values in the imagecopyresampled function. I don't get black images anymore, but i still do get some black part so i figure my ratio formula should be updated : if i upload a landscape image, the height of the new image is smaller than 170px, and then there's some black showing. How can i make sure the height of the image goes all the way ? Below is a simple script to allow users upload