ImagickDraw::pathEllipticArcAbsolute()函數是PHP中的一個內置函數,用於使用絕對坐標從當前點到(x,y)繪製橢圓弧。
用法:
bool ImagickDraw::pathEllipticArcAbsolute( float $rx, float $ry, float $x_axis_rotation, bool $large_arc_flag, bool $sweep_flag, float $x, float $y )
參數:此函數接受上述和以下所述的七個參數:
- $rx:它指定x-radius。
- $ry:它指定y-radius
- $x_axis_rotation:它指定x軸旋轉
- $large_arc_flag:它指定是否繪製較大的可用弧。
- $sweep_flag:它指定是否繪製與順時針旋轉匹配的圓弧。
- $x:它指定x坐標。
- $y:它指定y坐標。
返回值:成功時此函數返回TRUE。
異常:該函數在錯誤時引發ImagickException。
下麵給出的程序說明了PHP中的ImagickDraw::pathEllipticArcAbsolute()函數:
程序1:
<?php
// Create a new imagick object
$imagick = new Imagick();
// Create a image on imagick object
$imagick->newImage(800, 250, 'green');
// Create a new ImagickDraw object
$draw = new ImagickDraw();
$draw->setFillColor('blue');
// Set the stroke color
$draw->setStrokeColor('red');
// Set the stroke width
$draw->setStrokeWidth(15);
// Draw elliptic arc
$draw->pathStart();
$draw->pathEllipticArcAbsolute(420, 250, 10, true, true, 40, 40);
$draw->pathClose();
$draw->pathFinish();
// Render the draw commands
$imagick->drawImage($draw);
// Show the output
$imagick->setImageFormat('png');
header("Content-Type:image/png");
echo $imagick->getImageBlob();
?>
輸出:
程序2:
<?php
// Create a new imagick object
$imagick = new Imagick();
// Create a image on imagick object
$imagick->newImage(800, 250, '#E57733');
// Create a new ImagickDraw object
$draw = new ImagickDraw();
// Set the width of stroke
$draw->setStrokeWidth(1);
// Set the color of stroke
$draw->setStrokeColor('#E57733');
// Set the fill color
$draw->setFillColor('black');
// Set the fill rule
$draw->setFillRule(Imagick::FILLRULE_NONZERO);
// Draw a sunset cartoon
$draw->pathStart();
$draw->pathMoveToAbsolute(0, 100);
$draw->pathEllipticArcAbsolute(420, 400, 410, true, true, 0, 900);
$draw->pathMoveToAbsolute(300, 250);
$draw->pathEllipticArcAbsolute(420, 600, 410, true, true, 0, 900);
$draw->pathClose();
$draw->pathFinish();
$draw->setFillColor('yellow');
$draw->translate(30, 0);
$draw->circle(300, 100, 300, 150);
// Render the draw commands
$imagick->drawImage($draw);
// Show the output
$imagick->setImageFormat('png');
header("Content-Type:image/png");
echo $imagick->getImageBlob();
?>
輸出:
參考: https://www.php.net/manual/en/imagickdraw.pathellipticarcabsolute.php
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注:本文由純淨天空篩選整理自gurrrung大神的英文原創作品 PHP | ImagickDraw pathEllipticArcAbsolute() 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。