Graphics.Camera

Description : Data type to represent a camera and some functions for working with it.

Documentation

data Camera r

A basic camera data type. The fields stored are:

• the camera position,
• the raw camera normal, i.e. a unit vecotr into the center of the screen,
• the raw view up vector indicating which side points "upwards" in the scene,
• the viewplane depth (i.e. the distance from the camera position to the plane on which we project),
• the near distance (everything closer than this is clipped),
• the far distance (everything further away than this is clipped), and
• the screen dimensions.

Constructors

Camera !(Point 3 r) !(Vector 3 r) !(Vector 3 r) !r !r !r !(Vector 2 r)

Instances

Eq r => Eq (Camera r)

Defined in Graphics.Camera

Methods

(==) :: Camera r -> Camera r -> Bool

(/=) :: Camera r -> Camera r -> Bool

Ord r => Ord (Camera r)

Defined in Graphics.Camera

Methods

compare :: Camera r -> Camera r -> Ordering

(<) :: Camera r -> Camera r -> Bool

(<=) :: Camera r -> Camera r -> Bool

(>) :: Camera r -> Camera r -> Bool

(>=) :: Camera r -> Camera r -> Bool

max :: Camera r -> Camera r -> Camera r

min :: Camera r -> Camera r -> Camera r

Show r => Show (Camera r)

Defined in Graphics.Camera

Methods

showsPrec :: Int -> Camera r -> ShowS

show :: Camera r -> String

showList :: [Camera r] -> ShowS

cameraPosition :: forall r. Lens' (Camera r) (Point 3 r)

rawCameraNormal :: forall r. Lens' (Camera r) (Vector 3 r)

rawViewUp :: forall r. Lens' (Camera r) (Vector 3 r)

viewPlaneDepth :: forall r. Lens' (Camera r) r

nearDist :: forall r. Lens' (Camera r) r

farDist :: forall r. Lens' (Camera r) r

screenDimensions :: forall r. Lens' (Camera r) (Vector 2 r)

cameraNormal :: Floating r => Lens' (Camera r) (Vector 3 r)

Lens to get and set the Camera normal, makes sure that the vector remains normalized.

viewUp :: Floating r => Lens' (Camera r) (Vector 3 r)

Lens to get and set the viewUp vector. Makes sure the vector remains normalized.

cameraTransform :: Fractional r => Camera r -> Transformation 3 r

Full transformation that renders the figure

worldToView :: Fractional r => Camera r -> Transformation 3 r

Translates world coordinates into view coordinates

toViewPort :: Fractional r => Camera r -> Transformation 3 r

Transformation into viewport coordinates

perspectiveProjection :: Fractional r => Camera r -> Transformation 3 r

constructs a perspective projection

rotateCoordSystem :: Num r => Camera r -> Transformation 3 r

Rotates coordinate system around the camera, such that we look in the negative z direction

flipAxes :: Num r => Transformation 3 r

Flips the y and z axis.