PHP: Define a viewing transformation

Description

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

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

Parameters

view_x: x-coordinate for the viewing position
view_y: y-coordinate for the viewing position
view_z: z-coordinate for the viewing position
reference_x: x-coordinate for the reference point
reference_y: y-coordinate for the reference point
reference_z: z-coordinate for the reference point
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();

?>