# ImagickDraw::setStrokeOpacity

(PECL imagick 2, PECL imagick 3)

ImagickDraw::setStrokeOpacity — Specifies the opacity of stroked object outlines

### 说明

public ImagickDraw::setStrokeOpacity(float `$opacity`): bool
警告

本函数还未编写文档，仅有参数列表。

Specifies the opacity of stroked object outlines.

### 参数

`opacity`

  stroke opacity. 1.0 is fully opaque

### 返回值

没有返回值。

### 示例

示例 #1 ImagickDraw::setStrokeOpacity() example

`<?php
function setStrokeOpacity($strokeColor, $fillColor, $backgroundColor) {
$draw = new \ImagickDraw();
$draw->setStrokeWidth(1);
$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);
$draw->setStrokeWidth(10);
$draw->setStrokeOpacity(1);
$draw->line(100, 80, 400, 125);
$draw->rectangle(25, 200, 150, 350);
$draw->setStrokeOpacity(0.5);
$draw->line(100, 100, 400, 145);
$draw->rectangle(200, 200, 325, 350);
$draw->setStrokeOpacity(0.2);
$draw->line(100, 120, 400, 165);
$draw->rectangle(375, 200, 500, 350);
$image = new \Imagick();
$image->newImage(550, 400, $backgroundColor);
$image->setImageFormat("png");
$image->drawImage($draw);
header("Content-Type: image/png");
echo $image->getImageBlob();
}
?>`
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