ImagickDraw::line

(PECL imagick 2, PECL imagick 3)

ImagickDraw::lineDraws a line

说明

public ImagickDraw::line(
    float $sx,
    float $sy,
    float $ex,
    float $ey
): bool
警告

本函数还未编写文档,仅有参数列表。

Draws a line on the image using the current stroke color, stroke opacity, and stroke width.

参数

sx

starting x coordinate

sy

starting y coordinate

ex

ending x coordinate

ey

ending y coordinate

返回值

没有返回值。

示例

示例 #1 ImagickDraw::line() example

<?php
function line($strokeColor, $fillColor, $backgroundColor) {

$draw = new \ImagickDraw();

$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);

$draw->setStrokeWidth(2);
$draw->setFontSize(72);

$draw->line(125, 70, 100, 50);
$draw->line(350, 170, 100, 150);

$imagick = new \Imagick();
$imagick->newImage(500, 500, $backgroundColor);
$imagick->setImageFormat("png");
$imagick->drawImage($draw);

header("Content-Type: image/png");
echo
$imagick->getImageBlob();
}

?>

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User Contributed Notes 1 note

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0
GaryM at BinaryFarm dot com
13 years ago
<?php

// a twist on the above radar screen.
// This makes random colored spokes from a center point

$width = 400;
$height = 400;

$image = new Imagick();
$image->newImage( $width, $height, new ImagickPixel( 'wheat' ) );
$draw = new ImagickDraw();
//$draw->setStrokeColor( new ImagickPixel( 'black' ) );

$rx = $width / 2;
$ry = $height / 2;
$total = 2*M_PI;
$part = $total / 16;
while(
$total > 0 )
{
$ex = $rx +$rx * sin( $total );
$ey = $ry +$ry * cos( $total );
$draw->line ( $rx, $ry, $ex, $ey );
$total -= $part;

// We need three HEX numbers to create an RGB color code like '#FF33DD'.

$draw->setStrokeColor( get_random_color() );
}
$image->drawImage( $draw );
$image->setImageFormat( "png" );
header( "Content-Type: image/png" );
echo
$image;
exit;

function
get_random_color() // Thanks to Greg R. for this nice little function.
{
for (
$i = 0; $i<6; $i++)
{
$c .= dechex(rand(0,15));
}
return
"#$c";
}
?>
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