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@@ -340,27 +340,19 @@ class UtilService
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// 如果是圆形，先创建圆形图片
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if ($val['circle']) {
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- // 创建一个正方形的画布
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+ // 创建一个支持透明的画布
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$canvas = imagecreatetruecolor($val['width'], $val['height']);
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- // 创建白色背景（与海报背景相同）
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- $bgColor = imagecolorallocate($canvas, 255, 255, 255);
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- imagefill($canvas, 0, 0, $bgColor);
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+ // 设置画布为透明背景
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+ imagesavealpha($canvas, true);
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+ $transparent = imagecolorallocatealpha($canvas, 0, 0, 0, 127);
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+ imagefill($canvas, 0, 0, $transparent);
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// 将原图缩放到指定大小
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$sourceResized = imagecreatetruecolor($val['width'], $val['height']);
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imagecopyresampled($sourceResized, $res, 0, 0, 0, 0, $val['width'], $val['height'], $resWidth, $resHeight);
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- // 创建圆形蒙版
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- $mask = imagecreatetruecolor($val['width'], $val['height']);
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- $transparent = imagecolorallocate($mask, 255, 255, 255); // 白色背景
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- imagefill($mask, 0, 0, $transparent);
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-
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- // 绘制圆形（黑色）
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- $black = imagecolorallocate($mask, 0, 0, 0);
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- imagefilledellipse($mask, $val['width']/2, $val['height']/2, $val['width'], $val['height'], $black);
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-
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- // 将原图应用到圆形蒙版
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+ // 创建圆形
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$centerX = $val['width'] / 2;
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$centerY = $val['height'] / 2;
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$radius = min($val['width'], $val['height']) / 2;
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@@ -375,19 +367,7 @@ class UtilService
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}
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}
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- // 添加白色边框（可选，增加美观度）
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- $borderColor = imagecolorallocate($canvas, 255, 255, 255);
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- $borderRadius = $radius;
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- for ($angle = 0; $angle < 360; $angle += 1) {
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- $x = $centerX + $borderRadius * cos(deg2rad($angle));
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- $y = $centerY + $borderRadius * sin(deg2rad($angle));
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- if ($x >= 0 && $x < $val['width'] && $y >= 0 && $y < $val['height']) {
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- imagesetpixel($canvas, $x, $y, $borderColor);
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- }
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- }
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-
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imagedestroy($sourceResized);
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- imagedestroy($mask);
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imagedestroy($res);
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}else {
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// 非圆形，按原逻辑处理
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