test

import tkinter

class Polygon:

    def __init__(self, ax, ay, bx, by, cx, cy, dx=None, dy=None, color=None):
        self.ax = ax
        self.ay = ay
        self.bx = bx
        self.by = by
        self.cx = cx
        self.cy = cy
        self.dx = dx
        self.dy = dy
        self.color = color

    def is_click(self, event, g, event_x, event_y):
        widget_id = event.widget.find_closest(event.x, event.y)
        print(widget_id)
        g.move(widget_id, 1, 1) # just dummy move for a clicked widget
        pass

    def paint(self, g):
        self.g = g
        if self.dx is None:
            self.id = self.g.create_polygon(self.ax,self.ay,
                                            self.bx,self.by,
                                            self.cx,self.cy,
                                            fill=self.color)
        else:
            self.id = self.g.create_polygon(self.ax,self.ay,
                                            self.bx,self.by,
                                            self.cx,self.cy,
                                            self.dx,self.dy,
                                            fill=self.color)

    def move(self, d_ax=0, d_ay=0, d_bx=0, d_by=0, d_cx=0, d_cy=0, d_dx=None, d_dy=None):
        if d_dx is None:
            self.ax += d_ax
            self.ay += d_ay
            self.bx += d_bx
            self.by += d_by
            self.cx += d_cx
            self.cy += d_cy
            self.g.move(self.id, d_ax, d_ay, d_bx, d_by, d_cx, d_cy)
        else:
            self.ax += d_ax
            self.ay += d_ay
            self.bx += d_bx
            self.by += d_by
            self.cx += d_cx
            self.cy += d_cy
            self.dx += d_dx
            self.dy += d_dy
            self.g.move(self.id, d_ax, d_ay, d_bx, d_by, d_cx, d_cy, d_dx, d_dy)


class Tangram:

    def __init__(self):
        self.array = []
        self.g = tkinter.Canvas(width=800,height=800)
        self.g.pack()

        #all objects
        self.add(Polygon(500,300,625,175,750,300, color='SeaGreen'))
        self.add(Polygon(750,50,625,175,750,300, color='Tomato'))
        self.add(Polygon(500,175,562.6,237.5,500,300, color='SteelBlue'))
        self.add(Polygon(500,175,562.5,237.5,625,175,562.5,112.5, color='FireBrick'))
        self.add(Polygon(562.5,112.5,625,175,687.5,112.5, color='DarkMagenta'))
        self.add(Polygon(500,50,500,175,625,50, color='Gold'))
        self.add(Polygon(562.5,112.5,687.5,112.5,750,50,625,50, color='DarkTurquoise'))
        #end of all objects

        self.g.bind('<Button-1>', self.event_move_start)

    def add(self, Object):
        self.array.append(Object)
        Object.paint(self.g)

    def event_move_start(self, event):
        ix = len(self.array) - 1
        while ix >= 0 and not self.array[ix].is_click(event, self.g, event.x, event.y):
            ix -= 1
        if ix < 0:
            self.Object = None
            return
        self.Object = self.array[ix]
        self.ex, self.ey = event.x, event.y
        self.g.bind('<B1-Motion>', self.event_move)
        self.g.bind('<ButtonRelease-1>', self.event_release)

    def event_move(self):
        pass

    def event_release(self):
        pass



root = tkinter.Tk()

p = Tangram()

root.mainloop()