PHP: SWFGradient

Description

SWFGradient swfgradient ( void )

Внимание

Эта функция является ЭКСПЕРИМЕНТАЛЬНОЙ. Поведение этой функции, ее имя и относящаяся к ней документация могут измениться в последующих версиях PHP без уведомления. Используйте эту функцию на свой страх и риск.

swfgradient() creates a new SWFGradient object.

After you've added the entries to your gradient, you can use the gradient in a shape fill with the swfshape->addfill() method.

SWFGradient has the following methods : swfgradient->addentry().

This simple example will draw a big black-to-white gradient as background, and a reddish disc in its center.
Пример 1. swfgradient() example

<?php $m = new SWFMovie(); $m->setDimension(320, 240); $s = new SWFShape(); // first gradient- black to white $g = new SWFGradient(); $g->addEntry(0.0, 0, 0, 0); $g->addEntry(1.0, 0xff, 0xff, 0xff); $f = $s->addFill($g, SWFFILL_LINEAR_GRADIENT); $f->scaleTo(0.01); $f->moveTo(160, 120); $s->setRightFill($f); $s->drawLine(320, 0); $s->drawLine(0, 240); $s->drawLine(-320, 0); $s->drawLine(0, -240); $m->add($s); $s = new SWFShape(); // second gradient- radial gradient from red to transparent $g = new SWFGradient(); $g->addEntry(0.0, 0xff, 0, 0, 0xff); $g->addEntry(1.0, 0xff, 0, 0, 0); $f = $s->addFill($g, SWFFILL_RADIAL_GRADIENT); $f->scaleTo(0.005); $f->moveTo(160, 120); $s->setRightFill($f); $s->drawLine(320, 0); $s->drawLine(0, 240); $s->drawLine(-320, 0); $s->drawLine(0, -240); $m->add($s); header('Content-type: application/x-shockwave-flash'); $m->output(); ?>

SWFGradient

mabuzzer at hotmail dot com
13-Mar-2002 10:49


Gradient fills are implemented in SWF as a color ramp, mapped onto a square from (-16384, -16384) to (16384, 16384) TWIPS.



The following code creates a movie, displaying a square with a gradient fill, correctly scaled to the size of the shape.



<?php



//Set the scale to TWIPS rather than PIXELS

ming_setscale(1.0);



//Create the movie

$m = new SWFMovie();

$m->setRate(12.0);

$m->setDimension(400,400);

$m->setBackground(0xff, 0xff, 0xff);



//Width and height of rectangle

$sx = 300;

$sy = 300;



//Create rectangle

$s = new SWFShape();



//Gradient file stuff here...

$g = new SWFGradient();

$g->addEntry(0.0, 0x00, 0x00, 0xff);    // Start off Blue

$g->addEntry(1.0, 0xff, 0xff, 0x00);    // Finish off Yellow



// Add gradient fill to the shape

$f = $s->addFill($g);



//Centre the gradient fill against the rectangle

$f->moveTo($sx/2, $sy/2);

//Scale it to the shape, so that the entire gradient fits inside the shape

$f->scaleTo($sx/32768, 1);



// Set the shapes fill to be the added gradient fill

$s->setRightFill($f);



//Draw the rectangle

$s->drawLine($sx, 0);

$s->drawLine(0, $sy);

$s->drawLine(-$sx, 0);

$s->drawLine(0, -$sy);



//Add the shape to the movie

$sh = $m->add($s);

$sh->moveTo(50, 50);



// Output the movie

header("Content-type: application/x-shockwave-flash");

$m->output();



?>



More info about this can be obtained from 

http://www.openswf.org/spec/SWFfilereference.html#h4FillTypes