Imagick::sparseColorImage

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Imagick::sparseColorImage — Interpolates 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

May 12

Автор: aehtyb[]gmail.com


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();



?>