Computer-graphics-algorithms/lab1.py at main · nybc4ik/Computer-graphics-algorithms · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
import glfw
from OpenGL.GL import *
delta = 0.1
angle = 0.0
posx = 0.0
posy = 0.0
size = 0.0

def main():
    if not glfw.init():
        return
    window = glfw.create_window(640, 640, "Lab1", None, None)
    if not window:
        glfw.terminate()
        return
    glfw.make_context_current(window)
    glfw.set_key_callback(window, key_callback)
    glfw.set_scroll_callback(window, scroll_callback)
    while not glfw.window_should_close(window):
        display(window)
    glfw.destroy_window(window)
    glfw.terminate()

def display(window):
    global angle
    glClear(GL_COLOR_BUFFER_BIT)
    glLoadIdentity()
    glClearColor(1.0, 1.0, 1.0, 1.0)
    glPushMatrix()
    glRotatef(angle, 0, 0, 1)
    glBegin(GL_POLYGON)

    glColor3f(0.1,0.1,0.1)
    glVertex2f(posx + size + 0.0,posy + size + 0.5)

    glColor3f(0.78,0.23,1.0)
    glVertex2f(posx - size + -0.5,posy + size + 0.0)

    glColor3f(0.78,0.23,1.0)
    glVertex2f(posx - size + -1.0,posy + size + 0.0)

    glColor3f(0.0,1.0,1.0)
    glVertex2f(posx - size + -0.25,posy - size + -0.25)

    glColor3f(0.78,0.23,1.0)
    glVertex2f(posx - size + -0.75,posy - size + -0.25)

    glColor3f(0.78,0.23,1.0)
    glVertex2f(posx + size + 0.75,posy - size + -0.25)

    glColor3f(0.0,1.0,1.0)
    glVertex2f(posx + size + 1.0,posy + size + 0.0)

    glColor3f(0.35,0.0,0.89)
    glVertex2f(posx + size + 0.5,posy + size + 0.0)

    glEnd()
    glPopMatrix()
    angle += delta
    glfw.swap_buffers(window)
    glfw.poll_events()

def key_callback(   window, key, scancode, action,
mods):
    global delta
    global angle
    if action == glfw.PRESS:
        if key == 257:
            delta = -0.01
        if key == 32: # glfw.KEY_LEFT
            delta = 0.01
        if key == 344: # glfw.KEY_LEFT
            delta = 1

def scroll_callback(window, xoffset, yoffset):
    global size
    if (xoffset > 0):
        size -= yoffset/10
    else:
            size += yoffset/10
main()