PHP 7.0.6 Released

    The SWFGradient class

    (PHP 5 <= 5.3.0, PECL ming SVN)

    Introduction

    SWFGradient.

    Class synopsis

    SWFGradient {
    /* Methods */
    void addEntry ( float $ratio , int $red , int $green , int $blue [, int $alpha = 255 ] )
    __construct ( void )
    }

    Table of Contents

    User Contributed Notes

    mabuzzer at hotmail dot com
    14 years ago
    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
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