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资源说明：Programming lab @ UniPR
## Programming lab @ UniPR http://tomamic.github.io/fondinfo/ Python and C++ examples Copyleft (ɔ) 2008-2020 Michele Tomaiuolo - http://sowide.unipr.it/tomamic
This software is free - License: http://www.gnu.org/licenses/gpl-3.0.txt --- ## g2d ### Installing - Copy `g2d.py` from `examples` into the same folder containing your scripts; this will draw into a *PyGame window* - Alternatively, copy `g2d_web.py` in that location and rename the file as `g2d.py`; this will draw into a *browser window* ### Basic structs - A `point` or a `size` is a tuple `(x, y)` - A `color` is a tuple `(r, g, b)` ### Canvas functions - **`init_canvas`** `(size: (int, int))` : Initialize the drawing canvas - **`main_loop`** `(tick=None, fps=30)` : Start the event loop, accepting an optional `tick` function, which will be called periodically - **`clear_canvas`** `()` : Clear the canvas - **`close_canvas`** `()` : Close the canvas and exit the main loop ### Drawing functions - **`set_color`** `(color: (int, int, int))` : Set the drawing color - **`draw_line`** `(pt1: (int, int), pt2: (int, int))` : Draw a line from `pt1` to `pt2` - **`fill_circle`** `(center: (int, int), radius: int)` : Fill a circle, given `center` and `radius` - **`fill_rect`** `(pos: (int, int), size: (int, int))` : Fill a given rectangle - **`draw_text`** `(txt: str, pos: (int, int), size: int)` : Draw a text, given the left-top position and the font px size - **`draw_text_centered`** `(txt: str, pos: (int, int), size: int)` : Draw a centered text, given the position and the font px size ### Images and sounds - **`load_image`** `(src: str) -> str` : Load an image and return a name for it - **`draw_image`** `(src: str, pos: (int, int))` : Blit a whole image, given its name and the position - **`draw_image_clip`** `(src: str, pos: (int, int), clip_pos: (int, int), clip_size: (int, int))` : Blit a portion of an image - **`load_audio`** `(src: str) -> str` : Load a sound and return a name for it - **`play_audio`** `(src: str, loop: bool)` : Play a sound, possibly in a loop, given its name - **`pause_audio`** `(src: str)` : Stop playing a sound, given its name ### Input and output - **`mouse_position`** `() -> (int, int)` : Get current mouse position - **`mouse_clicked`** `() -> bool` : Check if left mouse button has been clicked - **`current_keys`** `() -> tuple` : Get all keys that are currently held down - **`prompt`** `(message: str) -> str` : Show a dialog for entering a line of text - **`confirm`** `(message: str) -> bool` : Show a dialog for confirming a decision - **`alert`** `(message: str)` : Show a dialog with a message
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