SWFShape->drawLineTo

(PHP 4 >= 4.0.5)

SWFShape->drawLineTo — Draws a line

Beschreibung

SWFShape

void drawLineTo ( float $x , float $y )

Warnung

Diese Funktion ist EXPERIMENTELL. Das Verhalten, der Funktionsname und alles Andere, was hier dokumentiert ist, kann sich in zukünftigen PHP-Versionen ohne Ankündigung ändern. Seien Sie gewarnt und verwenden Sie diese Funktion auf eigenes Risiko.

swfshape->setrightfill() draws a line (using the current line style, set by swfshape->setline()) from the current pen position to point (x ,y ) in the shape's coordinate space.

Rückgabewerte

Es wird kein Wert zurückgegeben.

Siehe auch

SWFShape->drawLine

add a note User Contributed Notes
SWFShape->drawLineTo

lexmanspam at laposte dot net
27-Jul-2005 07:04


If you have the error <<drawlineto(): failed assertion>> :



Ming can't handel drawLineToTo if the distance from the previous point is over 8276.7 pixels (mesured empiriticaly) in the vertical or horizontal axis

 Why ?

Coordinates in SWF are in twips (20 twips = 1 pixel)

 and 2^16 = 65536 = 3276.8 * 20

So we can assume that coordinates of drawLineTo in SWf are relatives to the previous point, and take 16 bits (plus the sign).

Or it can be ming that brings this limitation

These measures have been made with ming_setScale(20.00000000);

This issue doesn't seem to occur with movePenTo



Here's how you can handle this :



<?

function splitForMing($x1, $y1, $x2, $y2) {

  $res = array();

  $nbSegments =  floor(max(abs($x2 - $x1), abs($y2 - $y1)) / 3276) + 1;

  for($i = 1; $i < $nbSegments ; $i++) { // ($nbSegments - 1) iterations in the loop : the 1st point is assumed to have been already processed ; the last one is already known

            $res[] = array($x1 + ($x2 - $x1) * $i / $nbSegments, $y1 + ($y2 - $y1) * $i / $nbSegments);

  }

  $res[] = array($x2, $y2);

  return $res;

}



ming_setScale(20.00000000);

ming_useswfversion(6); // With ming 0.3

$movie = new SWFMovie();

$movie->setDimension(20000,8000);

$movie->setBackground(0xcc, 0xcc, 0xcc );

$movie->setRate(24);



$polygone = new SWFShape();

$polygone->setRightFill($polygone->addFill(0xff, 0, 0));

$polygone->setLine(20, 0x7f, 0, 0);

$polygone->movePenTo(10000, 500); // No split needed for movePenTo

$tmp = splitForMing(10000, 500, 15000, 500);

for( $i = 0 ; $i < count($tmp) ; $i++) {

     $polygone->drawLineTo($tmp[$i][0], $tmp[$i][1]); // C

}

$tmp = splitForMing(15000, 500, 15000, 5500);

for( $i = 0 ; $i < count($tmp) ; $i++) {

     $polygone->drawLineTo($tmp[$i][0], $tmp[$i][1]); // C

}

$tmp = splitForMing(15000, 5500, 10000, 500);

for( $i = 0 ; $i < count($tmp) ; $i++) {

     $polygone->drawLineTo($tmp[$i][0], $tmp[$i][1]); // C

}

$polygone->drawLineTo(15000, 15000);

$ajout = $movie->add($polygone);

$ajout->setName("test");

$movie->output();

?>

add a note

SWFShape->movePen

SWFShape->drawLine

Last updated: Fri, 30 Oct 2009