gets the ray from a camera


## Description


the parameter x and y should be in the [-1,1] range

x = 0, y = 0  : canvas center
x = -1, y = -1: bottom left corner
x = -1, y = 1 : top left corner
x = 1, y = -1 : bottom right corner
x = 1, y = 1  : top right corner


## Parameters

<table>
<thead>
	<tr>
		<th>Name</th>
		<th>Type</th>
		<th>Description</th>
	</tr>
</thead>
<tr>
	<td>x</td>
	<td><div class='bg-yellow-800 px-2 py-px text-white rounded-sm'>float</div></td>
	<td>x position in screen space</td>
</tr>
<tr>
	<td>y</td>
	<td><div class='bg-yellow-800 px-2 py-px text-white rounded-sm'>float</div></td>
	<td>y position in screen space</td>
</tr>
</table>