grafiku piesimas

from math import*
from turtle import*
from time import*
def graph(curves, c1=-275.,c2=283.,d1=-275.,d2=283.,scalingXY=(10,10,'x','y'),rounding=3, background='lightgreen', split_h=(True,10,"red"), split_v=(True,10,'red',0), lower=None, upper=None, go=goto, message=True):
    #curves=list of curves to graph - form: [(color, width,),*set of points]
    #scalingXY - for painting axis; rounding - for coordinates rounding; splits - for griding
    colormode(255)
    if message:
        print '2d preview...',
        t=time()
    reset()
    tracer(0)
    C,D=c2-c1,d2-d1
    if lower==None: x1,y1=float(min([min([el[0] for el in n[1:]]) for n in curves])),float(min([min([el[1] for el in n[1:]]) for n in curves]))
    else: x1,y1=lower[0],lower[1]
    if upper==None: x2,y2=float(max([max([el[0] for el in n[1:]]) for n in curves])),float(max([max([el[1] for el in n[1:]]) for n in curves]))
    else: x2,y2=upper[0],upper[1]
    difx,dify=x2-x1,y2-y1
    bgcolor(background)
    #responsible for drawing a grid
    def improved_int(a):
        if a>0: return(int(a))
        else: return int(a)-1
    if split_h[0]:
        pencolor(split_h[2])
        k=C/difx*(-x1-difx/split_h[1]*improved_int(-x1*split_h[1]/difx)) #a number to move gridliness
        special_line=improved_int(-x1*split_h[1]/difx)/float(split_h[1])
        for n in [float(i)/split_h[1] for i in range(split_h[1])]:
            up()
            go(c1+k+C*n,d1)
            down()
            if n==special_line:
                pensize(3)
                go(c1+k+C*n,d2)
                pensize(1)
            else: go(c1+k+C*n,d2)
    if split_v[0]:
        pencolor(split_v[2])
        k=C/dify*(-y1-dify/split_v[1]*improved_int(-y1*split_v[1]/dify)) #a number to move gridliness
        special_line=improved_int(-y1*split_v[1]/dify)/float(split_v[1])
        for n in [float(i)/split_v[1] for i in range(split_v[1]+1)]:
            up()
            go(c1,d1+k+C*n)
            down()
            if n==special_line:
                pensize(3)
                go(c2,d1+k+C*n)
                pensize(1)
            else: go(c2,d1+k+C*n)
    #responsible for drawing a curves
    update()
    for m in curves:
        tracer(0)
        pencolor(m[0][0])
        pensize(m[0][1])
        up()
        for n in m[1:]:
            go(c1+C*(n[0]-x1)/difx,d1+D*(n[1]-y1)/dify)
            down()
        update()
    pencolor("black")
    pensize(1)
    #responsible for marking axis
    up()
    go(c1,d1)
    down()
    k=C/difx*(-x1-difx/scalingXY[0]*improved_int(-x1*scalingXY[0]/difx))
    for n in [float(i)/scalingXY[0] for i in range(scalingXY[0])]:
        go(c1+k+C*n,d1)
        write(str(round(x1+k*difx/C+n*difx,rounding)))
        dot(5)
    go(c1+k+C*(n+.5/scalingXY[0]),d1)
    write(str(scalingXY[2]))
    pensize(1)
    up()
    go(c1,d1)
    down()
    k=C/dify*(-y1-dify/scalingXY[1]*improved_int(-y1*scalingXY[1]/dify))
    for n in [float(i)/scalingXY[1] for i in range(scalingXY[1])]:
        go(c1,d1+k+C*n)
        write(str(round(y1+k*dify/C+n*dify,rounding)))
        dot(5)
    go(c1,d1+k+C*(n+.5/scalingXY[1]))
    write(str(scalingXY[3]))
    if message: print time()-t
    exitonclick()