Imagick::sparseColorImage

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Imagick::sparseColorImageInterpolates colors

Description

public bool Imagick::sparseColorImage ( int $SPARSE_METHOD , array $arguments [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Given the arguments array containing numeric values this method interpolates the colors found at those coordinates across the whole image using sparse_method. This method is available if Imagick has been compiled against ImageMagick version 6.4.5 or newer.

Parameters

SPARSE_METHOD

Refer to this list of sparse method constants

arguments

An array containing the coordinates. The array is in format array(1,1, 2,45)

CHANNEL

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Defaults to Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Коментарии

Автор:
For those curious how to use sparseColorImage() directly without the seperate createGradientImage() function.. here is the format of the array used:

Array ( 
[0]  => 0   // X1 (X coordinate value #1)
[1]  => 0   // Y1 (Y coordinate value #1)
[2]  => 1   // R (red value between 0 and 1)
[3]  => 0   // G (green value between 0 and 1)
[4]  => 0   // B (blue value between 0 and 1)
[5]  => 1   // A (alpha value between 0 and 1)
[6]  => 400 // X2 
[7]  => 0   // Y2 
[8]  => 0   // R 
[9]  => 1   // G 
[10] => 0   // B 
[11] => 1   // A
[12] => 0   // X3 
[13] => 400 // Y3 
[14] => 1   // R 
[15] => 1   // G 
[16] => 0   // B 
[17] => 1   // A 
[18] => 400 // X4
[19] => 400 // Y4
[20] => 0   // R 
[21] => 0   // G 
[22] => 1   // B 
[23] => 1   // A 
)

<?php

$imagick 
= new imagick();
$imagick->newImage(400,400,"white");
$imagick->setImageFormat("png");

$array = Array(0,0,1,0,0,1,400,0,0,1,0,1,0,400,1,1,0,1,400,400,0,0,1,1);
$imagick->sparseColorImage(imagick::SPARSECOLORMETHOD_BILINEAR,$array);
   
header("Content-Type: image/png");
echo 
$imagick->getImageBlob();

?>
2016-05-12 23:48:50
http://php5.kiev.ua/manual/ru/imagick.sparsecolorimage.html

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