php教程

ImagickDraw::pushClipPath

(PECL imagick 2.0.0)

ImagickDraw::pushClipPathStarts a clip path definition

说明

ImagickDraw::pushClipPath ( string $clip_mask_id ) : bool
Warning

本函数还未编写文档,仅有参数列表。

Starts a clip path definition which is comprised of any number of drawing commands and terminated by a ImagickDraw::popClipPath() command.

参数

clip_mask_id

Clip mask Id

返回值

没有返回值。

User Contributed Notes

bogdan at moongate dot ro 08-Apr-2011 06:02
Here's an interactive example for your enjoyment, featuring two intersecting discs. My version doesn't antialias the clipping path; I suppose YMMV.

<?php

// Simple clip path example
// Bogdan Stancescu

$showClipping=1; // Try setting this to 0!
$showDrawing=1// Try setting this to 0!

// Don't edit below this line (at least until you understand the example)

$showBoth=$showClipping && $showDrawing;
$showAny=$showClipping || $showDrawing;

$image=new Imagick(); // Create image

// Image size
$width=151;
$height=101;

$image->newImage($width, $height, new ImagickPixel('lightgray')); // some visible background

$draw=new ImagickDraw(); // Create draw object

if ($showBoth)
       
$draw->pushClipPath('circle_left'); // Start clipping path

if ($showClipping) {
       
$draw->setFillColor('red'); // The color doesn't matter if we clip
       
$draw->circle(50,50,50,0); // A circle that occupies 100x100px on the left
}

if (
$showBoth) {
       
$draw->popClipPath(); // Finish clipping path
       
$draw->setClipPath('circle_left'); // Use the clipping path above
}

if (
$showDrawing) {
       
$draw->setFillColor('navy'); // This is the actual drawing color
       
$draw->circle(100,50,100,0); // A circle that occupies 100x100px on the right
}

if (
$showAny)
       
$image->drawImage($draw); // Render $draw unto $image

$image->setImageFormat('png'); // Tell ImageMagick how to render this
header("Content-Type: image/png"); // Tell the browser how to render this

echo $image; // Render the image into the browser
?>

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