Source code

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#  Copyright (c) 2019 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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#  ZOpenGLRegularPolygon.py

# encodig: utf-8

import numpy as np
import math
#import OpenGL

from SOL4Py.opengl.ZOpenGLObject import *
from SOL4Py.opengl.ZOpenGLQuadric import *


class ZOpenGLRegularPolygon(ZOpenGLObject):
  ## Constructor
  def __init__(self, number, primitive=GL_TRIANGLE_FAN, z=0.0):
    super().__init__()
    
    self.number    = number
    self.primitive = primitive
    self.polygon   = [[0.0 for i in range(3)] for j in range(self.number+1)]
     
  
    delta = 2.0 * math.pi / float(self.number);
    for i in range(self.number+1):
      self.polygon[i][0] = math.cos(delta * i);
      self.polygon[i][1] = math.sin(delta * i);
      self.polygon[i][2] = z; 
  
  def draw(self):
    glBegin(self.primitive);
    
    if self.primitive == GL_TRIANGLE_FAN:
      glVertex3f(0.0, 0.0, 0.0);
  
    for i in range(self.number+1):
      glVertex3fv(self.polygon[i]) #.[0], polygon[i].y, polygon[i].z);
    
    glEnd();