ImagickDraw::polyline()函數是PHP的Imagick庫中的內置函數,該函數用於使用指定的坐標數組使用當前筆觸,筆觸寬度以及填充顏色或紋理繪製折線。
用法:
bool ImagickDraw::polyline( $coordinates )
參數:該函數接受單個參數$coordinates,該參數用於將點的坐標保存為數組。
返回值:成功時此函數返回True。
以下示例程序旨在說明PHP中的ImagickDraw::polyline()函數:
程序1:
<?php
// Create an ImagickDraw Object
$draw = new ImagickDraw();
// Set Stroke Opacity
$draw->setStrokeOpacity(1);
// Set Stroke Color
$draw->setStrokeColor('green');
// Set Fill Color
$draw->setFillColor('red');
// Set Stroke Width
$draw->setStrokeWidth(5);
// Define the points at which lines to be draw
$points = [
['x' => 40 * 5, 'y' => 10 * 5],
['x' => 20 * 5, 'y' => 20 * 5],
['x' => 70 * 5, 'y' => 50 * 5],
['x' => 60 * 5, 'y' => 15 * 5]
];
// Call Polyline Function
$draw->polyline($points);
// Create an Imagick Object
$image = new Imagick();
// Create new Image
$image->newImage(500, 300, 'white');
// Set Image Format
$image->setImageFormat("png");
// Draw Image
$image->drawImage($draw);
header("Content-Type: image/png");
// Display the output image
echo $image->getImageBlob();
?>
輸出:
程序2:
<?php
// Create an ImagickDraw Object
$draw = new ImagickDraw();
// Set Stroke Opacity
$draw->setStrokeOpacity(1);
// Set Stroke Color
$draw->setStrokeColor('Black');
// Set Fill Color
$draw->setFillColor('Green');
// Set Stroke Width
$draw->setStrokeWidth(3);
// Define the points at which lines to be draw
$points = [
['x' => 40 * 5, 'y' => 10 * 5],
['x' => 20 * 5, 'y' => 20 * 5],
['x' => 70 * 5, 'y' => 50 * 5],
['x' => 40 * 5, 'y' => 10 * 5]
];
// Set the Font Size
$draw->setFontSize(50);
// Set the font family
$draw->setFontFamily('Ubuntu-Mono');
// Set the text to be added
$draw->annotation(30, 40, "GeeksForGeeks");
// Call Polyline Function
$draw->polyline($points);
// Create an Imagick Object
$image = new Imagick();
// Create new Image
$image->newImage(500, 300, 'white');
// Set Image Format
$image->setImageFormat("png");
// Draw Image
$image->drawImage($draw);
header("Content-Type: image/png");
// Display the output image
echo $image->getImageBlob();
?>
輸出:
參考: http://php.net/manual/en/imagickdraw.polyline.php
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注:本文由純淨天空篩選整理自sarthak_ishu11大神的英文原創作品 PHP | ImagickDraw polyline() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。