超越PHP - Exceed PHP: imagecopymerge

说明

int imagecopymerge ( resource dst_im, resource src_im, int dst_x, int dst_y, int src_x, int src_y, int src_w, int src_h, int pct)

将 src_im 图像中坐标从 src_x，src_y 开始，宽度为 src_w，高度为 src_h 的一部分拷贝到 dst_im 图像中坐标为 dst_x 和 dst_y 的位置上。两图像将根据 pct 来决定合并程度，其值范围从 0 到 100。当 pct = 0 时，实际上什么也没做，当为 100 时本函数和 imagecopy() 完全一样。

注: 这是 PHP 4.0.6 新加的。

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imagecopymerge

stefan dot wehowsky at profilschmiede dot de
27-Jul-2001 12:32

This function is intended to serve as an example for the
"imageCopyMerge"-function.

I hope it will help some of the
less experienced php-coders here.

I wrote it to mark objects of a real
estate broker as "sold" by copying the "sold"-picture
right into the picture of the
house.



<?php



//$sourcefile = Filename of the picture
into that $insertfile will be inserted.

//$insertfile = Filename of the
picture that is to be inserted into $sourcefile.

//$targetfile =
Filename of the modified picture.

//$transition = Intensity of the
transition (in percent)

//$pos		  = Position where $insertfile will be
inserted in $sourcefile

//				0 = middle

//				1 = top
left

//				2 = top right

//				3 = bottom right

//				4 =
bottom left

//				5 = top middle

//				6 = middle right

//				7
= bottom middle

//				8 = middle left

//

//

function
mergePix($sourcefile,$insertfile, $targetfile,
$pos=0,$transition=50)

{

	

//Get the resource id磗 of the
pictures

	$insertfile_id =
imageCreateFromJPEG($insertfile);

	$sourcefile_id =
imageCreateFromJPEG($sourcefile);



//Get the sizes of both
pix	

	$sourcefile_width=imageSX($sourcefile_id);

	$sourcefile_height=imageSY($sourcefile_id);

	$insertfile_width=imageSX($insertfile_id);

	$insertfile_height=imageSY($insertfile_id);



//middle

	if(
$pos == 0 )

	{

		$dest_x = ( $sourcefile_width / 2 ) - (
$insertfile_width / 2 );

		$dest_y = ( $sourcefile_height / 2 ) - (
$insertfile_height / 2 );

	}



//top left

	if( $pos == 1
)

	{

		$dest_x = 0;

		$dest_y = 0;

	}



//top
right

	if( $pos == 2 )

	{

		$dest_x = $sourcefile_width -
$insertfile_width;

		$dest_y = 0;

	}



//bottom
right

	if( $pos == 3 )

	{

		$dest_x = $sourcefile_width -
$insertfile_width;

		$dest_y = $sourcefile_height -
$insertfile_height;

	}



//bottom left	

	if( $pos == 4
)

	{

		$dest_x = 0;

		$dest_y = $sourcefile_height -
$insertfile_height;

	}



//top middle

	if( $pos == 5
)

	{

		$dest_x = ( ( $sourcefile_width - $insertfile_width ) / 2
);

		$dest_y = 0;

	}



//middle right

	if( $pos == 6
)

	{

		$dest_x = $sourcefile_width -
$insertfile_width;

		$dest_y = ( $sourcefile_height / 2 ) - (
$insertfile_

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