def draw_light_source(self):
glColor3f(1.0, 1.0, 1.0)
# 15 is radius of the sphere that light source around
self.light_source_position = [
15 * sin(self.theta_light_angle * pi / 180) *
sin(self.phi_light_angle * pi / 180),
15 * cos(self.theta_light_angle * pi / 180),
15 * sin(self.theta_light_angle * pi / 180) *
cos(self.phi_light_angle * pi / 180)
]
glTranslate(self.light_source_position[0],
self.light_source_position[1],
self.light_source_position[2])
# set light source position
glLightfv(GL_LIGHT0, GL_POSITION, [*self.light_source_position, 1])
# set light color
glLightfv(GL_LIGHT0, GL_DIFFUSE, self.light_color)
# set light intensity
glLightfv(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 0.7)
glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0.0001)
# turning the rays of light so that the back of the ball is shaded
gl_q = gluNewQuadric()
gluQuadricOrientation(gl_q, GLU_INSIDE)
# draw visual envelope (ball)
gluSphere(gl_q, 1, 20, 20)
glLoadIdentity()
def set_quadric_inside(self):
gluQuadricOrientation(self.quadric, GLU_INSIDE)
def set_quadric_outside(self):
gluQuadricOrientation(self.quadric, GLU_OUTSIDE)
def set_quadric_inside(self):
gluQuadricOrientation(self.quadric, GLU_INSIDE)
def set_quadric_outside(self):
gluQuadricOrientation(self.quadric, GLU_OUTSIDE)