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Man Pages


Manual Reference Pages  -  SWF::GRADIENT (3)

.ds Aq ’

NAME

SWF::Gradient - SWF gradient class

CONTENTS

SYNOPSIS



        use SWF::Gradient;
        use SWF::Constants qw(:Gradient);
        use SWF::Shape;
        $g = new SWF::Gradient();
        $g->addEntry(0.0,255,0,0,200);
        $g->addEntry(0.16,255,255,0,200);
        $g->addEntry(0.32,0,255,0,200);
        $g->addEntry(0.5,0,255,255,200);
        $g->addEntry(0.66,0,50,255,200);
        $g->addEntry(0.83 ,255,0,255,200);
        $g->addEntry(1.0,255,0,0,200);
        # ..make some kind of rainbow..
        $sh = new SWF::Shape();
        $fill = $sh->addGradientFill($g,SWFFILL_LINEAR_GRADIENT);



DESCRIPTION

SWF::Gradient is a helper class most useful for filling shapes (i.e. SWF::Shape objects), and also for filtering via SWF::DisplayItem methods using GradientGlowFilter or GradientBevelFilter, both are SWF::Filter objects.

METHODS

new SWF::Gradient() Creates and returns a gradient object. This object is an ’empty’ gradient, to be filled with control point entries via up to 15 addEntry() method calls. (For SWF version 7 are only 8 control points possible.) For gradients used for filters also only 8 control points are possible.
addEntry($ratio, $r, $g, $b [, $a]) Adds a gradient control point. The ratio parameter is a floating point value for controlling the position of the following RGBA-color value (consiting of red, green, blue and optional alpha parts) in an increasing row between 0.0 and 1.0 . Adding more than 15 entries will be useless and ignored.
setSpreadMode($mode) For version >= 8 only: set a gradient spread mode: one of SWF_GRADIENT_PAD (default), SWF_GRADIENT_REPEAT, SWF_GRADIENT_REFLECT .
setInterpolationMode($mode) For version >= 8 only: set a gradient interpolation mode: one of SWF_GRADIENT_NORMAL (default), SWF_GRADIENT_LINEAR .
setFocalPoint($focalpoint) Makes a focal gradient ’asymetric’. A focalpoint value of -1.0 means the focal point is close to the left border, 0.0 is in the center and 1.0 is close to the right border. Also this feature is available for version >= 8 only. For best results use the SWFFILL_FOCAL_GRADIENT flag when adding to v4 shapes, i.e. like



        $g = new SWF::Gradient();
        $g->setFocalPoint(-0.9);
        $g->addEntry(0.000000,0xff,0x00,0x00,0xff);
        $g->addEntry(1.000000,0x00,0xff,0x00,0xff);
        $shape->useVersion(4);
        $shape->addGradientFill($g,SWFFILL_FOCAL_GRADIENT);



AUTHOR



        developers of
        ming.sourceforge.net



SEE ALSO

SWF, SWF::Shape, SWF::Fill, SWF::Filter, SWF::Constants
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perl v5.20.3 .::SWF::GRADIENT (3) 2015-05-15

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