vstup= qgis.utils.iface.activeLayer()
bodyv = vstup.getFeatures()
body=[]
for i in bodyv:
	body.append(i.geometry().asPoint())
konvex=[]
x0=1.0
y0=1.0
index0= None
for i in range(0,len(body)-1):
    if body[i].x()<x0:
        
        x0=body[i].x()
        y0=body[i].y()
        index0=i
for i in range(0,len(body)-1):
    if x0=body[i].x() and y0<body[i].y():
        y0=body[i].y()
        index0 = i
konvex.append(body.pop(index0))
bodi = konvex[0]
azimut=0
indexa = None
otacka=0
prubeh =0
for k in range (0,len(body)-1):
    for i in body:
        if bodi.azimuth(i)>azimut and bodi.azimuth(i)>0 and otacka=0:
            bodi=i
            indexa=body.index(i)
            prubeh = prubeh +1
    if prubeh > 0:
        konvex.append(body.pop(indexa))
    else:
        otacka=1
        body.append(konvex[0])
    for i in body:
        if bodi.azimuth(i)<azimut and bodi.azimuth(i)<0 and otacka=1:
            bodi=i
            indexa=body.index(i)
    konvex.append(body.pop(indexa))
    if konvex[0]==konvex[len(konvex)-1]
        break