SWF_LOOKAT(3)								 1							     SWF_LOOKAT(3)

swf_lookat - Define a viewing transformation

SYNOPSIS

       void  swf_lookat  (float   $view_x,  float   $view_y,  float  $view_z, float  $reference_x, float  $reference_y, float  $reference_z, float
       $twist)

DESCRIPTION

	Defines a viewing transformation by giving the viewing position and the coordinates of a reference point in the scene.

PARAMETERS

	      o $view_x
		- x-coordinate for the viewing position

	      o $view_y
		- y-coordinate for the viewing position

	      o $view_z
		- z-coordinate for the viewing position

	      o $reference_x
		- x-coordinate for the reference point

	      o $reference_y
		- y-coordinate for the reference point

	      o $reference_z
		- z-coordinate for the reference point

	      o $twist
		- Controls the rotation along with viewer's z axis.

RETURN VALUES

	No value is returned.

EXAMPLES

       Example #1

	      A simple 3D-rotation around a text

	      <?php

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

	      swf_openfile("php://stdout", 320, 200, 25, 1, 1, 1);

	      swf_ortho(-100, 100, -100, 100, -100, 100); // create 3D coordinates

	      swf_definefont(0, "Pix3");
	      swf_addcolor(0, 0, 0, 1);
	      swf_fontsize(10);
	      swf_fonttracking(0.2);

	      for ($i = 0; $i < 628; $i += 8) {
		  $j = $i / 100;
		  swf_pushmatrix();
		  swf_translate(0, 0, 0);
		  swf_perspective(100, 1, 0, 10);
		  swf_lookat(sin($j) * 60, 50, cos($j) * 60, 0, 0, 0, 0);

		  swf_definetext (1, 'HotKey@', 0);
		  swf_translate(-50,0,0);

		  swf_placeobject(1,10);

		  swf_definetext(2, 'example.com', 0);
		  swf_translate(55, 0, 0);
		  swf_placeobject(2, 11);

		  swf_showframe();
		  swf_removeobject(10);
		  swf_removeobject(11);
		  swf_popmatrix();
	      }

	      swf_closefile();
	      ?>

PHP Documentation Group 													     SWF_LOOKAT(3)