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digits.py
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digits.py
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from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
import math
class Digits:
"""
This class is designed to display the last two digits of a student id.
User can input his/her student id and the last two digits will be displayed in the window.
Here Mid Point Line (MPL) with 8-Way Symmetry is used.
Author- Priom Deb
http://priomdeb.com, [email protected]
"""
def __init__(self):
self.__midpoint_points = []
def find_zone(self, x1, y1, x2, y2):
dx = x2 - x1
dy = y2 - y1
if abs(dx) > abs(dy):
if dx >= 0 and dy >= 0:
return 0
elif dx <= 0 and dy >= 0:
return 3
elif dx <= 0 and dy <= 0:
return 4
elif dx >= 0 and dy <= 0:
return 7
else:
if dx >= 0 and dy >= 0:
return 1
elif dx <= 0 and dy >= 0:
return 2
elif dx <= 0 and dy <= 0:
return 5
elif dx >= 0 and dy <= 0:
return 6
def convert_to_zone0(self, x1, y1, zone):
"""
Converting to Zone 0 from any zone.
\nFrom Zone 0 -> x = x, y = y
\nFrom Zone 1 -> x = y, y = x
\nFrom Zone 2 -> x = y, y = -x
\nFrom Zone 3 -> x = -x, y = y
\nFrom Zone 4 -> x = -x, y = -y
\nFrom Zone 5 -> x = -y, y = -x
\nFrom Zone 6 -> x = -y, y = x
\nFrom Zone 7 -> x = x, y = -y
:return: x1, y1, x2, y2
"""
if zone == 0:
return x1, y1
elif zone == 1:
return y1, x1
elif zone == 2:
return y1, -x1
elif zone == 3:
return -x1, y1
elif zone == 4:
return -x1, -y1
elif zone == 5:
return -y1, -x1
elif zone == 6:
return -y1, x1
elif zone == 7:
return x1, -y1
def convert_to_original_zone(self, x1, y1, zone):
"""
Converting to original zone from zone 0.
The method is as same as converting to Zone 0 from any zone except for zone 2 and zone 6
\nFrom Zone 2 -> x = -y, y = x
\nFrom Zone 6 -> x = y, y = -x
:return: x1, y1, x2, y2
"""
if zone == 0:
return x1, y1
elif zone == 1:
return y1, x1
elif zone == 2:
return -y1, x1
elif zone == 3:
return -x1, y1
elif zone == 4:
return -x1, -y1
elif zone == 5:
return -y1, -x1
elif zone == 6:
return y1, -x1
elif zone == 7:
return x1, -y1
def midpoint(self, x1, y1, x2, y2):
glBegin(GL_POINTS)
zone = self.find_zone(x1, y1, x2, y2)
x1_to_z0, y1_to_z0 = self.convert_to_zone0(x1, y1, zone)
x2_to_z0, y2_to_z0 = self.convert_to_zone0(x2, y2, zone)
dy = y2_to_z0 - y1_to_z0
dx = x2_to_z0 - x1_to_z0
d = 2 * dy - dx
d_E = 2 * dy
d_NE = 2 * (dy - dx)
x = x1_to_z0
y = y1_to_z0
original_x, original_y = self.convert_to_original_zone(x, y, zone)
glVertex2f(original_x, original_y)
while x <= x2_to_z0:
self.__midpoint_points.append((original_x, original_y))
if d < 0:
x = x + 1
d = d + d_E
else:
x = x + 1
y = y + 1
d = d + d_NE
original_x, original_y = self.convert_to_original_zone(x, y, zone)
glVertex2f(original_x, original_y)
glEnd()
def draw_digit(self, digit, offset_x=0, offset_y=0, digit_position_x=0):
"""
left_top -> l_t
left_bottom -> l_b
bottom -> b
right_bottom -> r_b
right_top -> r_t
top -> t
middle -> m
:return:
"""
digit_lights = {
0: [self.l_t, self.l_b, self.b, self.r_b, self.r_t, self.t],
1: [self.r_b, self.r_t],
2: [self.l_b, self.b, self.r_t, self.t, self.m],
3: [self.b, self.r_b, self.r_t, self.t, self.m],
4: [self.l_t, self.r_b, self.r_t, self.m],
5: [self.l_t, self.b, self.r_b, self.t, self.m],
6: [self.l_t, self.l_b, self.b, self.r_b, self.t, self.m],
7: [self.r_b, self.r_t, self.t],
8: [self.l_t, self.l_b, self.b, self.r_b, self.t, self.r_t, self.m],
9: [self.l_t, self.b, self.r_b, self.t, self.r_t, self.m]
}
if digit == "00":
show_digits = "00"
else:
show_digits = digit
first_digit = int(show_digits[0])
if int(digit) > 9:
second_digit = int(show_digits[1])
if int(digit) <= 9:
first_digit = 0
second_digit = int(show_digits[0])
for i in digit_lights[first_digit]:
i(x=digit_position_x + offset_x, y=250 + offset_y)
for i in digit_lights[second_digit]:
i(x=digit_position_x + offset_x, y=250 + offset_y, adjust=250)
def get_midpoint_points(self):
return self.__midpoint_points
def r_t(self, adjust=0, x=0, y=0):
# Right Top
self.midpoint(400 + adjust + x, 400 + y, 400 + adjust + x, 600 + y)
def r_b(self, adjust=0, x=0, y=0):
# Right Bottom
self.midpoint(400 + adjust + x, 200 + y, 400 + adjust + x, 400 + y)
def l_t(self, adjust=0, x=0, y=0):
# Left Top
self.midpoint(200 + adjust + x, 400 + y, 200 + adjust + x, 600 + y)
def l_b(self, adjust=0, x=0, y=0):
# Left Bottom
self.midpoint(200 + adjust + x, 200 + y, 200 + adjust + x, 400 + y)
def b(self, adjust=0, x=0, y=0):
# Bottom
self.midpoint(200 + adjust + x, 200 + y, 400 + adjust + x, 200 + y)
def t(self, adjust=0, x=0, y=0):
# Top
self.midpoint(200 + adjust + x, 600 + y, 400 + adjust + x, 600 + y)
def m(self, adjust=0, x=0, y=0):
# Middle
self.midpoint(200 + adjust + x, 400 + y, 400 + adjust + x, 400 + y)