Graphics.Rendering.Handa.Viewer

Functions for managing perspectives and frusta.

Viewer Geometry

data ViewerParameters

Paramaters specifying a viewer, including the frustum of the view.

Constructors

ViewerParameters

Fields

• displayAspectRatio :: GLdouble

  The aspect ratio of the screen or display (i.e., the width divided by the height).

• displayThrowRatio :: GLdouble

  The throw ratio of the screen or display (i.e., the width divided by the distance).

• distanceNearPlane :: GLdouble

  The distance to the near plane of the frustum.

• distanceFarPlane :: GLdouble

  The distance to the far plane of the frustum.

• eyePosition :: Vertex3 GLdouble

  The position of the eyes.

• eyeSeparation :: Vector3 GLdouble

  The separation between the eyes.

• eyeUpward :: Vector3 GLdouble

  The upward direction.

• sceneCenter :: Vertex3 GLdouble

  The center of the scene.

Instances

Eq ViewerParameters

Methods

(==) :: ViewerParameters -> ViewerParameters -> Bool

(/=) :: ViewerParameters -> ViewerParameters -> Bool

Read ViewerParameters

Methods

readsPrec :: Int -> ReadS ViewerParameters

readList :: ReadS [ViewerParameters]

readPrec :: ReadPrec ViewerParameters

readListPrec :: ReadPrec [ViewerParameters]

Show ViewerParameters

Methods

showsPrec :: Int -> ViewerParameters -> ShowS

show :: ViewerParameters -> String

showList :: [ViewerParameters] -> ShowS

Default ViewerParameters

Methods

def :: ViewerParameters

viewerGeometry

Arguments

:: GLdouble

The width of the screen or display.

-> GLdouble

The height of the screen or display.

-> GLdouble

The distance from the eyes to the screen or display.

-> ViewerParameters

The corresponding viewer parameters.

Construct viewer geometry from physical geometry.

fieldOfView

Arguments

:: ViewerParameters

The viewer parameters

-> GLdouble

The field of view, in degrees.

Compute the field of view for viewer parameters.

Typical Devices

phoneViewer :: ViewerParameters

Viewer parameters for a typical smartphone screen.

laptopViewer :: ViewerParameters

Viewer parameters for a typical laptop screen.

desktopViewer :: ViewerParameters

Viewer parameters for a typical desktop monitor.

projectorViewer :: ViewerParameters

Viewer parameters for a typical projector.

Callbacks and Rendering

reshape

Arguments

:: ViewerParameters

The viewer parameters.

-> ReshapeCallback

The reshape callback.

Construct a reshape callback from viewer parameters. This simply sets the frustum based on the viewer parameters and the size of the viewport.

loadViewer

Arguments

:: ViewerParameters

The viewer parameters.

-> DlpEye

The eye from which to view.

-> IO ()

An action for looking at the scene using the specified eye and viewer parameters.

Create an action look at the scene according to the viewer parameters.

dlpViewerDisplay

Arguments

:: DlpEncoding

The DLP encoding.

-> ViewerParameters

The viewer parameters.

-> DisplayCallback

The display callback.

-> DlpDisplay

The DLP display data for using the specified encoding, viewer parameters, and display callback.

Construct a DLP display from a display callback.