hgeometry-0.10.0.0: Geometric Algorithms, Data structures, and Data types.

Copyright	(C) Frank Staals
License	see the LICENSE file
Maintainer	Frank Staals
Safe Haskell	None
Language	Haskell2010

Graphics.Camera

Description

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

Synopsis

data Camera r = Camera !(Point 3 r) !(Vector 3 r) !(Vector 3 r) !r !r !r !(Vector 2 r)
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)
viewUp :: Floating r => Lens' (Camera r) (Vector 3 r)
cameraTransform :: Fractional r => Camera r -> Transformation 3 r
worldToView :: Fractional r => Camera r -> Transformation 3 r
toViewPort :: Fractional r => Camera r -> Transformation 3 r
perspectiveProjection :: Fractional r => Camera r -> Transformation 3 r
rotateCoordSystem :: Num r => Camera r -> Transformation 3 r
flipAxes :: Num r => Transformation 3 r

Documentation

data Camera r Source #

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) Source #
Instance details Defined in Graphics.Camera Methods (==) :: Camera r -> Camera r -> Bool # (/=) :: Camera r -> Camera r -> Bool #
Ord r => Ord (Camera r) Source #
Instance details 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) Source #
Instance details 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) Source #

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

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

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

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

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

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

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

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

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

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

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

Full transformation that renders the figure

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

Translates world coordinates into view coordinates

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

Transformation into viewport coordinates

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

constructs a perspective projection

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

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

flipAxes :: Num r => Transformation 3 r Source #

Flips the y and z axis.