Module rurtle::graphic

This is the backend for turtle graphics. It's a wrapper around glium, dealing with shaders etc. and providing a few high-level methods upon which turtles can be built.

The Coordinate grid

Unlike in other graphic libraries, the origin (0, 0) is in the middle of the whole canvas. Positive x/y coordinates go right/up and negative ones left/down. The canvas does have as many pixels as the window size, thus it is possible to increase the section shown by resizing the window. Scrolling and zooming are currently not supported.

Drawing and events

To stay flexible, TurtleScreen has no built-in event loop. To redraw the screen, use the draw_and_update-function. To handle events such as mouse clicks, use handle_events.

Example

let mut screen = TurtleScreen::new((640, 480), "Rurtle");
screen.add_line((0.0, 0.0), (50.0, 50.0), color::BLACK);
screen.turtle_position = (50.0, 50.0);
screen.turtle_orientation = 315.0;
screen.draw_and_update();

Modules

color

Module for color aliases

Structs

TurtleScreen

A TurtleScreen is a window that houses a turtle. It provides some graphic methods, but you should use a Turtle instead.