ImagickDraw::line()

(PECL imagick 2.0.0)

Draws a line

说明

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

Warning

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。

范例

Example #1 ImagickDraw::line()

<?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();
}
?>

<?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";
} 
?>