import time, math
from pyglet.gl import *

window = pyglet.window.Window()


class Square:
    def __init__(self, color=[1,1,1]):
        self.color = color
    def draw(self):
        glColor3f(self.color[0],self.color[1],self.color[2])
        glBegin(GL_TRIANGLE_STRIP)
        glVertex2f(-2,-2)
        glVertex2f(2,-2)
        glVertex2f(-2,2)
        glVertex2f(2,2)
        glEnd()
    def update(self,dt):
        pass

class AlphaWheel:
    def __init__(self, moveradius=2.0, color=[1,1,1]):
        self.moveradius = moveradius
        self.color = color
        self.xpos = 0
        self.ypos = 0
    def draw(self):
#        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
        glEnable(GL_BLEND)
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
        glPushMatrix()
        glTranslatef(self.xpos, self.ypos, 0)
        glBegin(GL_TRIANGLE_FAN)
        glColor4f(self.color[0],self.color[1],self.color[2],1)
        glVertex2f(0,0)
        glColor4f(self.color[0],self.color[1],self.color[2],0)
        for angle in range(0,361, 10):
            glVertex2f(math.sin(angle*math.pi/180.0)*2, math.cos(angle*math.pi/180.0)*2)
        glEnd()
        glPopMatrix()
        glDisable(GL_BLEND)
    def update(self,dt):
        self.xpos = self.moveradius * math.sin(time.time())
        self.ypos = self.moveradius * math.cos(time.time())


objects = [ Square(), AlphaWheel(moveradius=2, color=[1,0,0]) ]


@window.event
def on_draw():
    glClearColor(0, 0.3, 0.5, 0)
    glClear(GL_COLOR_BUFFER_BIT)
    
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluOrtho2D(-5, 5, -5, 5)
    glMatrixMode(GL_MODELVIEW)

    for o in objects:
        o.draw()
    



def update(dt):
    for o in objects:
        o.update(dt)


pyglet.clock.schedule_interval(update,1/60.0)
pyglet.app.run()