Define a viewing transformation

swf_lookat

(PHP 4)

swf_lookatDefine 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"32020025111);

swf_ortho(-100100, -100100, -100100); // create 3D coordinates

swf_definefont(0"Pix3");
swf_addcolor(0001);
swf_fontsize(10);
swf_fonttracking(0.2);

for (
$i 0$i 628$i += 8) {
    
$j $i 100;
    
swf_pushmatrix();
    
swf_translate(000);
    
swf_perspective(1001010);
    
swf_lookat(sin($j) * 6050cos($j) * 600000);

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

    
swf_placeobject(1,10);

    
swf_definetext(2'example.com'0);
    
swf_translate(5500);
    
swf_placeobject(211);

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

swf_closefile();
?>


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