Modulesdl2-gfx-0.3.0.0Haskell2010

SDL.Rotozoom

Bindings to SDL2_gfx's surface rotation and zoom functionality.

typetype Angle = Double

Desired rotation in degrees.

typetype Zoom = Double

A dimension scaling factor.

datadata Smooth

Whether resulting Surfaces are anti-aliased or not.

Instances8Bounded, Enum, Eq, Ord, Read, Show, …

Bounded SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Enum SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Eq SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Ord SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Read SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Show SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
Generic SmoothDefined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom
type Rep Smooth = D1 ('MetaData "Smooth" "SDL.Rotozoom" "sdl2-gfx-0.3.0.0-1yvdpTMQ4M19ovvn1UIFTQ" 'False) (C1 ('MetaCons "Smooth" 'PrefixI 'False) U1 :+: C1 ('MetaCons "Rough" 'PrefixI 'False) U1)Defined in sdl2-gfx-0.3.0.0 · SDL.Rotozoom

valuerotozoom :: MonadIO m => Surface -> Angle -> Zoom -> Smooth -> m Surface

Rotates and zooms a 32 or 8-bit Surface.

If the Surface isn't 8-bit or 32-bit RGBA/ABGR, it will be converted into 32-bit RGBA.

valuerotozoomXY

Same as rotozoom, but applies different horizontal and vertical scaling factors.

The Zoom arguments are the horizontal and vertical zoom, respectively.

typetype Size = V2 CInt

A surface size, packing width and height.

valuerotozoomSize :: MonadIO m => Size -> Angle -> Zoom -> m Size

Given the Size of an input Surface, returns the Size of a Surface resulting from a rotozoom call.

valuerotozoomSizeXY :: MonadIO m => Size -> Angle -> Zoom -> Zoom -> m Size

Same as rotozoomSize, but for different horizontal and vertical scaling factors.

valuezoom :: MonadIO m => Surface -> Zoom -> Smooth -> m Surface

Same as rotozoom, but only performs the zoom.

If a Zoom factor is negative, it flips the image on both axes.

valuezoomXY :: MonadIO m => Surface -> Zoom -> Zoom -> Smooth -> m Surface

Same as zoom, but applies different horizontal and vertical scaling factors.

If a Zoom factor is negative, it flips the image on its corresponding axis.

valuezoomSize :: MonadIO m => Size -> Zoom -> m Size

Calculates the Size of a resulting Surface for a zoom call.

valuezoomSizeXY :: MonadIO m => Size -> Angle -> Zoom -> m Size

Same as zoomSize, but for different horizontal and vertical scaling factors.

valueshrink :: MonadIO m => Surface -> CInt -> CInt -> m Surface

Shrink a surface by an integer ratio.

The two CInt arguments are the horizontal and vertical shrinking ratios: 2 halves a dimension, 5 makes it a fifth of its original size etc.

The resulting Surface is anti-aliased and, if the input wasn't 8-bit or 32-bit, converted to a 32-bit RGBA format.

valuerotate90 :: MonadIO m => Surface -> Int -> m Surface

Given a number of clockwise rotations to perform, rotates Surface in increments of 90 degrees.

Since no interpolation is done, this is faster than rotozoomer.