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我正在畫一些框到畫布上,但似乎存在imagedashedline的問題。除線條不水平的情況外,虛線似乎不可見。關於什麼是錯的任何想法?PHP/GD imagedashedline隱形或未繪製
實施例代碼
$width = 204;
$height = 317;
$canvas = imagecreate($width, $height);
$white = imagecolorallocate($canvas, 255, 2555, 255);
$black = imagecolorallocate($canvas, 0, 0, 0);
$topLeft = 2;
$topRight = 2;
$bottomLeft = $width-2;
$bottomRight = $height-2;
imagesetthickness($canvas, 1);
// parallel line, solid
imageline($canvas, 0, 101, 204, 101, $black);
// parallel line, should be dashed, fail
imagedashedline($canvas, 0, 121, 204, 121, $black);
// parallel line should be dashed, works
imagedashedline($canvas, 0, 0, 204, 305, $black);
imagejpeg($canvas,'dashes.jpg');
imagedestroy($canvas)
輸出
我甚至沒有閱讀過那些...... doh! – Fuzzy