Graphics.Rendering.Handa.Projection

Functions for off-axis projection.

Screens.

data Screen a

Description of a physical screen geometry.

Constructors

Screen

Fields

lowerLeft :: Vertex3 a

The lower left corner.

lowerRight :: Vertex3 a

The lower right corner.

upperLeft :: Vertex3 a

The upper left corner.

Instances

Functor Screen

Eq a => Eq (Screen a)

Data a => Data (Screen a)

Read a => Read (Screen a)

Show a => Show (Screen a)

Generic (Screen a)

(Generic a, FromJSON a) => FromJSON (Screen a)

(Generic a, Binary a) => Binary (Screen a)

type Rep (Screen a)

aspectRatio

Arguments

:: (AdditiveGroup a, RealFloat a)

=> Screen a

The screen geometry.

-> a

The aspect ratio, namely the screen width divided by its height.

The aspect ratio.

throwRatio

Arguments

:: (AdditiveGroup a, RealFloat a)

=> Screen a

The screen geometry.

-> Vertex3 a

The eye position.

-> a

The throw ratio, name the distance to the screen divided by its width.

The throw ratio.

Projections.

projection

Arguments

:: (AdditiveGroup a, MatrixComponent a, RealFloat a)

=> Screen a

The screen geometry.

-> Vertex3 a

The eye position.

-> a

The distance to the near culling plane.

-> a

The distance to the far culling plane.

-> IO ()

An action for performing the off-axis projection.

Make an off-axis projection for a screen. This projection is based on the equations in <http://csc.lsu.edu/~kooima/pdfs/gen-perspective.pdf> .