Graphics.Gloss

Gloss hides the pain of drawing simple vector graphics behind a nice data type and a few display functions.

Getting something on the screen is as easy as:

    import Graphics.Gloss
    main = displayInWindow "My Window" (200, 200) (10, 10) white (Circle 80)

Once the window is open you can use the following:

• Quit - esc-key.
• Move Viewport - left-click drag, arrow keys.
• Rotate Viewport - right-click drag, control-left-click drag, or home/end-keys.
• Zoom Viewport - mouse wheel, or page up/down-keys.

Animations can be constructed similarly using the animateInWindow.

If you want to run a simulation based around finite time steps then try simulateInWindow from Graphics.Gloss.Interface.Simulate.

If you want to manage your own key/mouse events then use gameInWindow from Graphics.Gloss.Interface.Game.

Gloss uses OpenGL under the hood, but you don't have to worry about any of that.

 Release Notes:
 For 1.2.0:
     Cleaned up module hierarchy.
     Added line-line intersection utils.
     Fixed a bug causing motion events to give the wrong position.   (Thanks to Thomas DuBuisson)
     Fixed a space leak in simulate mode when the window was hidden. (Thanks to Stephan Maka)
     Enabled -Wall and fixed all warnings.
     Various wibbles for GHC 7.0

For 1.1.0:
     Added game mode.
     Added QuadTree and Extent structures.
     Added simple ray casting.

Documentation

module Graphics.Gloss.Data.Picture

module Graphics.Gloss.Data.Color

displayInWindow

Arguments

:: String

Name of the window.

-> (Int, Int)

Initial size of the window, in pixels.

-> (Int, Int)

Initial position of the window, in pixels.

-> Color

Background color.

-> Picture

The picture to draw.

-> IO ()

Open a new window and display the given picture.

Use the following commands once the window is open:

• Quit - esc-key.
• Move Viewport - left-click drag, arrow keys.
• Rotate Viewport - right-click drag, control-left-click drag, or home/end-keys.
• Zoom Viewport - mouse wheel, or page up/down-keys.

animateInWindow

Arguments

:: String

Name of the window.

-> (Int, Int)

Initial size of the window, in pixels.

-> (Int, Int)

Initial position of the window, in pixels.

-> Color

Background color.

-> (Float -> Picture)

Function to produce the next frame of animation. It is passed the time in seconds since the program started.

-> IO ()

Open a new window and display the given animation.

Once the window is open you can use the same commands as with displayInWindow.