gloss- Painless 2D vector graphics, animations and simulations.



Simulate mode is for producing an animation of some model who's picture changes over finite time steps. The behavior of the model can also depent on the current ViewPort.





:: forall model .  
=> Display

Display mode.

-> Color

Background color.

-> Int

Number of simulation steps to take for each second of real time.

-> model

The initial model.

-> (model -> Picture)

A function to convert the model to a picture.

-> (ViewPort -> Float -> model -> model)

A function to step the model one iteration. It is passed the current viewport and the amount of time for this simulation step (in seconds).

-> IO () 

Run a finite-time-step simulation in a window. You decide how the model is represented, how to convert the model to a picture, and how to advance the model for each unit of time. This function does the rest.

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

data ViewPort Source




viewPortTranslate :: (Float, Float)

Global translation.

viewPortRotate :: Float

Global rotation (in degrees).

viewPortScale :: Float

Global scaling (of both x and y coordinates).