Graphics.GLUtil.Camera2D

A camera designed for 2D viewing. The camera may be translated perpendicular to its view direction, or rolled about its view direction.

Camera movement

data Camera a

A Camera may be translated and rotated to provide a coordinate frame into which 3D points may be transformed.

Constructors

Camera

Fields

• forward :: V3 a
• upward :: V3 a
• rightward :: V3 a
• orientation :: Quaternion a
• location :: V3 a

track :: (Conjugate a, Epsilon a, RealFloat a) => V2 a -> Camera a -> Camera a

Move the camera side-to-side or up-and-down as in a tracking shot.

roll :: (Epsilon a, RealFloat a) => a -> Camera a -> Camera a

Roll a camera view about its view direction by an angle given in degrees.

rollRad :: (Epsilon a, RealFloat a) => a -> Camera a -> Camera a

Roll a camera view about its view direction by an angle given in radians.

Camera initialization

camera2D :: (Epsilon a, RealFloat a) => Camera a

Initialize a camera for 2D rendering.

Math

camMatrix :: (Conjugate a, Epsilon a, RealFloat a) => Camera a -> M33 a

Produce a matrix that transforms homogenous 2D points into the camera's coordinate frame.

deg2rad :: RealFloat a => a -> a

Convert degrees to radians.