circle.py

from OpenGL.GL import *
import numpy as np
from mid_point_lines import *
# PACMAN CIRCLE


def drawCurve(radius,pos_x, pos_y):
    x = 0
    y = radius

    d=1-radius

    trasnlate = np.array([[1, 0, pos_x],
                          [0, 1, pos_y],
                          [0, 0, 1]])

    v1 = np.array([[0],  # center of circle
                  [0],
                  [1]])

    v11 = np.matmul(trasnlate, v1)  # translate center of circle

    while x < y:

        glColor3f(1.0, .50, 0.0)
        glPointSize(1)
        glBegin(GL_POINTS)
        #glVertex2f(v11[0][0] + y, v11[1][0] + x)    #zone-0
        glVertex2f(v11[0][0] + x, v11[1][0] + y)  # zone-1
        glVertex2f(v11[0][0] - x, v11[1][0] + y)  # zone-2
        glVertex2f(v11[0][0] - y, v11[1][0] + x)  # zone-3
        glVertex2f(v11[0][0] - y, v11[1][0] - x)  # zone-4
        glVertex2f(v11[0][0] - x, v11[1][0] - y)  # zone-5
        glVertex2f(v11[0][0] + x, v11[1][0] - y)  # zone-6

        #glVertex2f(v11[0][0] + y, v11[1][0] -x)#zone-7
        glEnd()

        if d < 0:

            # choose east


            d=d+2*x+3
            x = x + 1

        else:
            # choosing south east


            d=d+2*x-2*y+5
            x = x + 1
            y = y - 1

    #drawing the pacman mouth
    draw_midpoint_lines(v11[0][0] + x, v11[1][0] + y,v11[0][0], v11[1][0],'ok')
    draw_midpoint_lines(v11[0][0] + x, v11[1][0] + -y,v11[0][0], v11[1][0],'ok')