A camera represents a point of view in the scene. Every scene must have at least a camera.

• fov: field of view.
• aspect: aspect ratio.
• near: near plane.
• far: far plane.
• position: camera's position, in world coordinates.
• rotation: camera's rotation, a 3d vector.
• scale: camera's scale.

<camera id="camera_1" fov="70" aspect="1.5" near="1" far="1000">
    <position y="300" z="500"/>			
</camera>