Re: GD 2.0.28 + PHP 4.4.2 + pixelation :(

Steven Macintyre wrote: > Hi All, > > I have done some searching via google and some answers say change > copyimageresampled to copyimageresized etc which should be the correct; use copyimageresampled() > > I have tried all fixes ... to no avail > > > I have one image here 1280 x 960 (150 dpi) 24 depth DPI is completely irrelevant. the '24 depth' sounds like your using a PNG as input rather that a JPEG (which your function expects) your not making sure that the new width & height are always integers. use intval() or ceil() or floor() (depending on your your and the context)... I have no idea what happens if you pass floats (or non-numeric data) in the relevant arguments of image*() functinons but I'm guessing it *could* lead to unexplained weirdness of some sort. read the man page for imagejpeg(): http://php.net/manual/en/function.imagejpeg.php take note of the third argument, personally I always set it to 100, anything less and clients have a tendency to start complaining about image quality. > > When using the following it pixelates ... > > function createthumb($name,$filename,$new_w,$new_h) > { > $system=explode(".",$name); > $src_img=imagecreatefromjpeg($name); > $old_x=imageSX($src_img); > $old_y=imageSY($src_img); > if ($old_x > $old_y) > { > $thumb_w=$new_w; > $thumb_h=$old_y*($new_h/$old_x); > } > if ($old_x < $old_y) > { > $thumb_w=$old_x*($new_w/$old_y); > $thumb_h=$new_h; > } > if ($old_x == $old_y) > { > $thumb_w=$new_w; > $thumb_h=$new_h; > } > $dst_img=ImageCreateTrueColor($thumb_w,$thumb_h); > > imagecopyresized($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); try: imagecopyresampled(); > imagejpeg($dst_img,$filename); > imagedestroy($dst_img); > imagedestroy($src_img); > } > > Which I am of course calling with > createthumb($add,'../pics/'.$largeval,350,263); > > Now ... afaik my new sizes are proportional to the big ones ... but it > pixelates :( > > However, > > Using an image 1600 x 1200 (96 dpi) 24 depth it works and there is no > pixilation > > Can someone perhaps assist now? > > > > Kind Regards, > > > Steven Macintyre > http://steven.macintyre.name > -- > > http://www.friends4friends.co.za >