   #PHP Manual Ming functions for Flash ming_useswfversion
   SWFBitmap->getHeight

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                                   SWFAction

   (PHP 4 >= 4.0.5)
   SWFAction -- Creates a new Action.

Description

   new swfaction ( string script)

   Warning

   This function is EXPERIMENTAL. The behaviour of this function, the
   name of this function, and anything else documented about this
   function may change without notice in a future release of PHP. Use
   this function at your own risk.

   swfaction() creates a new Action, and compiles the given script into
   an SWFAction object.

   The script syntax is based on the C language, but with a lot taken
   out- the SWF bytecode machine is just too simpleminded to do a lot of
   things we might like. For instance, we can't implement function calls
   without a tremendous amount of hackery because the jump bytecode has a
   hardcoded offset value. No pushing your calling address to the stack
   and returning- every function would have to know exactly where to
   return to.

   So what's left? The compiler recognises the following tokens:

     * break
     * for
     * continue
     * if
     * else
     * do
     * while

   There is no typed data; all values in the SWF action machine are
   stored as strings. The following functions can be used in expressions:

   time()
          Returns the number of milliseconds (?) elapsed since the movie
          started.

   random(seed)
          Returns a pseudo-random number in the range 0-seed.

   length(expr)
          Returns the length of the given expression.

   int(number)
          Returns the given number rounded down to the nearest integer.

   concat(expr, expr)
          Returns the concatenation of the given expressions.

   ord(expr)
          Returns the ASCII code for the given character

   chr(num)
          Returns the character for the given ASCII code

   substr(string, location, length)
          Returns the substring of length length at location location of
          the given string string.

   Additionally, the following commands may be used:

   duplicateClip(clip, name, depth)
          Duplicate the named movie clip (aka sprite). The new movie clip
          has name name and is at depth depth.

   removeClip(expr)
          Removes the named movie clip.

   trace(expr)
          Write the given expression to the trace log. Doubtful that the
          browser plugin does anything with this.

   startDrag(target, lock, [left, top, right, bottom])
          Start dragging the movie clip target. The lock argument
          indicates whether to lock the mouse (?)- use 0 (FALSE) or 1
          (TRUE). Optional parameters define a bounding area for the
          dragging.

   stopDrag()
          Stop dragging my heart around. And this movie clip, too.

   callFrame(expr)
          Call the named frame as a function.

   getURL(url, target, [method])
          Load the given URL into the named target. The target argument
          corresponds to HTML document targets (such as "_top" or
          "_blank"). The optional method argument can be POST or GET if
          you want to submit variables back to the server.

   loadMovie(url, target)
          Load the given URL into the named target. The target argument
          can be a frame name (I think), or one of the magical values
          "_level0" (replaces current movie) or "_level1" (loads new
          movie on top of current movie).

   nextFrame()
          Go to the next frame.

   prevFrame()
          Go to the last (or, rather, previous) frame.

   play()
          Start playing the movie.

   stop()
          Stop playing the movie.

   toggleQuality()
          Toggle between high and low quality.

   stopSounds()
          Stop playing all sounds.

   gotoFrame(num)
          Go to frame number num. Frame numbers start at 0.

   gotoFrame(name)
          Go to the frame named name. Which does a lot of good, since I
          haven't added frame labels yet.

   setTarget(expr)
          Sets the context for action. Or so they say- I really have no
          idea what this does.

   And there's one weird extra thing. The expression frameLoaded(num) can
   be used in if statements and while loops to check if the given frame
   number has been loaded yet. Well, it's supposed to, anyway, but I've
   never tested it and I seriously doubt it actually works. You can just
   use /:framesLoaded instead.

   Movie clips (all together now- aka sprites) have properties. You can
   read all of them (or can you?), you can set some of them, and here
   they are:

     * x
     * y
     * xScale
     * yScale
     * currentFrame - (read-only)
     * totalFrames - (read-only)
     * alpha - transparency level
     * visible - 1=on, 0=off (?)
     * width - (read-only)
     * height - (read-only)
     * rotation
     * target - (read-only) (???)
     * framesLoaded - (read-only)
     * name
     * dropTarget - (read-only) (???)
     * url - (read-only) (???)
     * highQuality - 1=high, 0=low (?)
     * focusRect - (???)
     * soundBufTime - (???)

   So, setting a sprite's x position is as simple as /box.x = 100;. Why
   the slash in front of the box, though? That's how flash keeps track of
   the sprites in the movie, just like a Unix filesystem- here it shows
   that box is at the top level. If the sprite named box had another
   sprite named biff inside of it, you'd set its x position with
   /box/biff.x = 100;. At least, I think so; correct me if I'm wrong
   here.

   This simple example will move the red square across the window.

   Example 1. swfaction() example
   <?php
     $s = new SWFShape();
     $f = $s->addFill(0xff, 0, 0);
     $s->setRightFill($f);
     $s->movePenTo(-500, -500);
     $s->drawLineTo(500, -500);
     $s->drawLineTo(500, 500);
     $s->drawLineTo(-500, 500);
     $s->drawLineTo(-500, -500);
     $p = new SWFSprite();
     $i = $p->add($s);
     $i->setDepth(1);
     $p->nextFrame();
     for ($n=0; $n<5; ++$n) {
       $i->rotate(-15);
       $p->nextFrame();
     }
     $m = new SWFMovie();
     $m->setBackground(0xff, 0xff, 0xff);
     $m->setDimension(6000, 4000);
     $i = $m->add($p);
     $i->setDepth(1);
     $i->moveTo(-500,2000);
     $i->setName("box");
     $m->add(new SWFAction("/box.x += 3;"));
     $m->nextFrame();
     $m->add(new SWFAction("gotoFrame(0); play();"));
     $m->nextFrame();
     header('Content-type: application/x-shockwave-flash');
     $m->output();
   ?>

   This simple example tracks down your mouse on the screen.

   Example 2. swfaction() example
   <?php
     $m = new SWFMovie();
     $m->setRate(36.0);
     $m->setDimension(1200, 800);
     $m->setBackground(0, 0, 0);
     /* mouse tracking sprite - empty, but follows mouse so we can
        get its x and y coordinates */
     $i = $m->add(new SWFSprite());
     $i->setName('mouse');
     $m->add(new SWFAction("
       startDrag('/mouse', 1); /* '1' means lock sprite to the mouse */
     "));
     /* might as well turn off antialiasing, since these are just
   squares. */
     $m->add(new SWFAction("
       this.quality = 0;
     "));
     /* morphing box */
     $r = new SWFMorph();
     $s = $r->getShape1();
     /* Note this is backwards from normal shapes.  No idea why. */
     $s->setLeftFill($s->addFill(0xff, 0xff, 0xff));
     $s->movePenTo(-40, -40);
     $s->drawLine(80, 0);
     $s->drawLine(0, 80);
     $s->drawLine(-80, 0);
     $s->drawLine(0, -80);
     $s = $r->getShape2();
     $s->setLeftFill($s->addFill(0x00, 0x00, 0x00));
     $s->movePenTo(-1, -1);
     $s->drawLine(2, 0);
     $s->drawLine(0, 2);
     $s->drawLine(-2, 0);
     $s->drawLine(0, -2);
     /* sprite container for morphing box -
        this is just a timeline w/ the box morphing */
     $box = new SWFSprite();
     $box->add(new SWFAction("
       stop();
     "));
     $i = $box->add($r);
     for ($n=0; $n<=20; ++$n) {
       $i->setRatio($n/20);
       $box->nextFrame();
     }
     /* this container sprite allows us to use the same action code many
   times */
     $cell = new SWFSprite();
     $i = $cell->add($box);
     $i->setName('box');
     $cell->add(new SWFAction("
       setTarget('box');
       /* ...x means the x coordinate of the parent, i.e. (..).x */
       dx = (/mouse.x + random(6)-3 - ...x)/5;
       dy = (/mouse.y + random(6)-3 - ...y)/5;
       gotoFrame(int(dx*dx + dy*dy));
     "));
     $cell->nextFrame();
     $cell->add(new SWFAction("
       gotoFrame(0);
       play();
     "));
     $cell->nextFrame();
     /* finally, add a bunch of the cells to the movie */
     for ($x=0; $x<12; ++$x) {
       for ($y=0; $y<8; ++$y) {
         $i = $m->add($cell);
         $i->moveTo(100*$x+50, 100*$y+50);
       }
     }
     $m->nextFrame();
     $m->add(new SWFAction("
       gotoFrame(1);
       play();
     "));
     header('Content-type: application/x-shockwave-flash');
     $m->output();
   ?>

   Same as above, but with nice colored balls...

   Example 3. swfaction() example
   <?php
     $m = new SWFMovie();
     $m->setDimension(11000, 8000);
     $m->setBackground(0x00, 0x00, 0x00);
     $m->add(new SWFAction("
   this.quality = 0;
   /frames.visible = 0;
   startDrag('/mouse', 1);
     "));
     // mouse tracking sprite
     $t = new SWFSprite();
     $i = $m->add($t);
     $i->setName('mouse');
     $g = new SWFGradient();
     $g->addEntry(0, 0xff, 0xff, 0xff, 0xff);
     $g->addEntry(0.1, 0xff, 0xff, 0xff, 0xff);
     $g->addEntry(0.5, 0xff, 0xff, 0xff, 0x5f);
     $g->addEntry(1.0, 0xff, 0xff, 0xff, 0);
     // gradient shape thing
     $s = new SWFShape();
     $f = $s->addFill($g, SWFFILL_RADIAL_GRADIENT);
     $f->scaleTo(0.03);
     $s->setRightFill($f);
     $s->movePenTo(-600, -600);
     $s->drawLine(1200, 0);
     $s->drawLine(0, 1200);
     $s->drawLine(-1200, 0);
     $s->drawLine(0, -1200);
     // need to make this a sprite so we can multColor it
     $p = new SWFSprite();
     $p->add($s);
     $p->nextFrame();
     // put the shape in here, each frame a different color
     $q = new SWFSprite();
     $q->add(new SWFAction("gotoFrame(random(7)+1); stop();"));
     $i = $q->add($p);
     $i->multColor(1.0, 1.0, 1.0);
     $q->nextFrame();
     $i->multColor(1.0, 0.5, 0.5);
     $q->nextFrame();
     $i->multColor(1.0, 0.75, 0.5);
     $q->nextFrame();
     $i->multColor(1.0, 1.0, 0.5);
     $q->nextFrame();
     $i->multColor(0.5, 1.0, 0.5);
     $q->nextFrame();
     $i->multColor(0.5, 0.5, 1.0);
     $q->nextFrame();
     $i->multColor(1.0, 0.5, 1.0);
     $q->nextFrame();
     // finally, this one contains the action code
     $p = new SWFSprite();
     $i = $p->add($q);
     $i->setName('frames');
     $p->add(new SWFAction("
   dx = (/:mousex-/:lastx)/3 + random(10)-5;
   dy = (/:mousey-/:lasty)/3;
   x = /:mousex;
   y = /:mousey;
   alpha = 100;
     "));
     $p->nextFrame();
     $p->add(new SWFAction("
   this.x = x;
   this.y = y;
   this.alpha = alpha;
   x += dx;
   y += dy;
   dy += 3;
   alpha -= 8;
     "));
     $p->nextFrame();
     $p->add(new SWFAction("prevFrame(); play();"));
     $p->nextFrame();
     $i = $m->add($p);
     $i->setName('frames');
     $m->nextFrame();
     $m->add(new SWFAction("
   lastx = mousex;
   lasty = mousey;
   mousex = /mouse.x;
   mousey = /mouse.y;
   ++num;
   if (num == 11)
     num = 1;
   removeClip('char' & num);
   duplicateClip(/frames, 'char' & num, num);
     "));
     $m->nextFrame();
     $m->add(new SWFAction("prevFrame(); play();"));
     header('Content-type: application/x-shockwave-flash');
     $m->output();
   ?>
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