ImagickDraw::bezier
(PECL imagick 2.0.0)
ImagickDraw::bezier — Draws a bezier curve
说明
$coordinates
)本函数还未编写文档，仅有参数列表。
Draws a bezier curve through a set of points on the image.
参数
-
coordinates -
Multidimensional array like array( array( 'x' => 1, 'y' => 2 ), array( 'x' => 3, 'y' => 4 ) )
返回值
没有返回值。
范例
Example #1 ImagickDraw::bezier()
<?php
function bezier ( $strokeColor , $fillColor , $backgroundColor ) {
$draw = new \ ImagickDraw ();
$strokeColor = new \ ImagickPixel ( $strokeColor );
$fillColor = new \ ImagickPixel ( $fillColor );
$draw -> setStrokeOpacity ( 1 );
$draw -> setStrokeColor ( $strokeColor );
$draw -> setFillColor ( $fillColor );
$draw -> setStrokeWidth ( 2 );
$smoothPointsSet = [
[
[ 'x' => 10.0 * 5 , 'y' => 10.0 * 5 ],
[ 'x' => 30.0 * 5 , 'y' => 90.0 * 5 ],
[ 'x' => 25.0 * 5 , 'y' => 10.0 * 5 ],
[ 'x' => 50.0 * 5 , 'y' => 50.0 * 5 ],
],
[
[ 'x' => 50.0 * 5 , 'y' => 50.0 * 5 ],
[ 'x' => 75.0 * 5 , 'y' => 90.0 * 5 ],
[ 'x' => 70.0 * 5 , 'y' => 10.0 * 5 ],
[ 'x' => 90.0 * 5 , 'y' => 40.0 * 5 ],
],
];
foreach ( $smoothPointsSet as $points ) {
$draw -> bezier ( $points );
}
$disjointPoints = [
[
[ 'x' => 10 * 5 , 'y' => 10 * 5 ],
[ 'x' => 30 * 5 , 'y' => 90 * 5 ],
[ 'x' => 25 * 5 , 'y' => 10 * 5 ],
[ 'x' => 50 * 5 , 'y' => 50 * 5 ],
],
[
[ 'x' => 50 * 5 , 'y' => 50 * 5 ],
[ 'x' => 80 * 5 , 'y' => 50 * 5 ],
[ 'x' => 70 * 5 , 'y' => 10 * 5 ],
[ 'x' => 90 * 5 , 'y' => 40 * 5 ],
]
];
$draw -> translate ( 0 , 200 );
foreach ( $disjointPoints as $points ) {
$draw -> bezier ( $points );
}
//Create an image object which the draw commands can be rendered into
$imagick = new \ Imagick ();
$imagick -> newImage ( 500 , 500 , $backgroundColor );
$imagick -> setImageFormat ( "png" );
//Render the draw commands in the ImagickDraw object
//into the image.
$imagick -> drawImage ( $draw );
//Send the image to the browser
header ( "Content-Type: image/png" );
echo $imagick -> getImageBlob ();
}
?> 用户评论:
[#1] SkepticaLee [2014-01-26 16:19:17]
This function requires at least 3 points. The following code fails when there are only two points left in the array:
<?php
$im = new Imagick ();
$points = array (array ('x' => 10, 'y' => 10), array ('x' => 20, 'y' => 10), array ('x' => 30, 'y' => 40), array ('x' => 40, 'y' => 20), array ('x' => 50, 'y' => 60));
$n = 0;
while (!empty ($points))
{
$im->newImage (64, 64, "white");
$draw = new ImagickDraw ();
$draw->setFillColor ("none");
$draw->setStrokeWidth (4);
$draw->setStrokeColor ("black");
$draw->setStrokeOpacity (0.9);
$draw->setStrokeAntiAlias (true);
$draw->bezier ($points);
$im->drawImage ($draw);
$im->writeImage ("IMG_$n.png");
$draw->destroy ();
$im->destroy ();
echo count ($points) . ", $n: <img src=\"IMG_$n.png\"><br>";
$n++;
array_shift ($points);
}
?>
[#2] zombiebovine at gmail dot com [2009-09-14 03:43:38]
How to use:
<?php
$width = 200;
$height = 200;
$border = 2;
$img = new Imagick();
$img->newImage( $width, $height, new ImagickPixel( 'transparent' ) );
$draw = new ImagickDraw();
$draw->setStrokeColor( new ImagickPixel( 'black' ) );
$draw->setStrokeWidth( 2 );
$draw->setFillColor( new ImagickPixel( 'transparent' ) );
// will fail in an obscure manner if the input data is invalid
$points = array
(
array( 'x' => 0, 'y' => 200 ),
array( 'x' => 0, 'y' => 0 ),
array( 'x' => 200, 'y' => 200 ),
array( 'x' => 200, 'y' => 0 )
);
$draw->bezier($points);
$img->drawImage( $draw );
$img->setImageFormat( "png" );
header( "Content-Type: image/png" );
echo $img;
?>