class WindowMaster:
"""
A class for managing program window. It collects data, initializes window, draws figure, manages keyboard actions.
...
Attributes
----------
background_color: list
background color stored as rgb unsigned byte
data_initializer: Initializer
object of class Initializer used to read and store input data
displayer: DisplayMaster
object of class DisplayMaster used to draw main figure
...
Methods
----------
create_window():
Create window, set background color and grid size
start_drawing():
Start main loop.
reshape_window(width, heigth):
Manage changing window's size
keyboardControl():
Managing keyboard actions
"""
def create_window(self):
glutInit(sys.argv)
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
glutInitWindowSize(800, 800)
glutInitWindowPosition(320, 100)
glutCreateWindow("lab1")
glClearColor(self.background_color[0], self.background_color[1],
self.background_color[2], 1.0)
gluOrtho2D(-20.0, 20.0, -20.0, 20.0)
def __init__(self):
self.data_initializer = Initializer('sw_templates.json')
self.background_color = [
color / 255
for color in self.data_initializer.get_background_color()
]
self.create_window()
self.displayer = DisplayMaster(
self.data_initializer.get_all_figure_list(),
self.data_initializer.get_figure_color(),
self.data_initializer.get_move_vector())
def startDrawing(self):
glutDisplayFunc(self.displayer.render_figure)
glutReshapeFunc(self.reshapeWindow)
glutKeyboardFunc(self.keyboardControl)
glutMainLoop()
def reshapeWindow(self, w, h):
# preventing dividing by zero if window height is 0
if h == 0:
h = 1
# coefficient to maintain the proportions of the picture when resizing the window
coef = float(w) / h
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
if w > h:
gluOrtho2D(-20.0 * coef, 20.0 * coef, -20.0, 20.0)
else:
gluOrtho2D(-20.0, 20.0, -20.0 / coef, 20.0 / coef)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
def keyboardControl(self, key, x1, y1):
# pressed key code
key = ord(key)
# moving picture by pressing D/W
if key == 100 or key == 119:
DisplayMaster.x_center_coordinate = DisplayMaster.x_center_coordinate + DisplayMaster.move_vector[
0]
DisplayMaster.y_center_coordinate = DisplayMaster.y_center_coordinate + DisplayMaster.move_vector[
1]
# moving picture by pressing A/S
if key == 97 or key == 115:
DisplayMaster.x_center_coordinate = DisplayMaster.x_center_coordinate - DisplayMaster.move_vector[
0]
DisplayMaster.y_center_coordinate = DisplayMaster.y_center_coordinate - DisplayMaster.move_vector[
1]
# zoom in
if key == 43:
DisplayMaster.scaling_coef = DisplayMaster.scaling_coef * 1.5
# zoom out
if key == 45:
DisplayMaster.scaling_coef = DisplayMaster.scaling_coef / 1.5
glutPostRedisplay()
