def checkLines():
pa = Point(0, 0)
pb = Point(1, 1)
la = Line(pa, pb)
print(la)
print(la.reverse())
lb = Line(pb, pa)
print(lb)
print(lb.reverse())
def checkParallelPlacements():
# same size circles
# above same x
print('pl above same x')
caCenter = Point(0, 0)
cbCenter = Point(0, 5)
ca = Circle(caCenter, 1)
cb = Circle(cbCenter, 1)
Tangents(ca, cb)
# below same x
print('pl below same x')
cbCenter = Point(0, -5)
cb = Circle(cbCenter, 1)
Tangents(ca, cb)
# left same x
print('pl left same y')
caCenter = Point(0, 0)
cbCenter = Point(5, 0)
ca = Circle(caCenter, 1)
cb = Circle(cbCenter, 1)
Tangents(ca, cb)
# right same x
print('pl right same y')
caCenter = Point(0, 0)
cbCenter = Point(-5, 0)
ca = Circle(caCenter, 1)
cb = Circle(cbCenter, 1)
Tangents(ca, cb)
# left no difference left & right for parallel
print('pl left')
caCenter = Point(0, 0)
cbCenter = Point(-5, 4)
ca = Circle(caCenter, 1)
cb = Circle(cbCenter, 1)
Tangents(ca, cb)
def checkTangentTypes():
# ca inside cb no overlay
caCenter = Point(0, 0)
ca = Circle(caCenter, 1)
cb = Circle(caCenter, 2)
print('No overlap ' + str(numTangents(ca, cb)))
# ca inside cb single contract
caCenter = Point(0, 0)
ca = Circle(caCenter, 1)
cbCenter = Point(1, 0)
cb = Circle(cbCenter, 2)
print('overlap Single contact internal ' + str(numTangents(ca, cb)))
# ca overlap cb 2 external
caCenter = Point(0, 0)
ca = Circle(caCenter, 2)
cbCenter = Point(1, 0)
cb = Circle(cbCenter, 2)
print('Ovferlap 2 touch ' + str(numTangents(ca, cb)))
# ca touch cb 2 external 1 internal
caCenter = Point(0, 0)
ca = Circle(caCenter, 2)
cbCenter = Point(4, 0)
cb = Circle(cbCenter, 2)
print('adjacent single touch external ' + str(numTangents(ca, cb)))
# ca separate from cb
ca = Circle(caCenter, 2)
cbCenter = Point(5, 0)
cb = Circle(cbCenter, 2)
print('Separate ' + str(numTangents(ca, cb)))
def svgTangents(ca,cb): # arguments are svg shapes - Circle
c0r = ca.__getitem__('r') # radius
c0x = ca.__getitem__('cx')
c0y = ca.__getitem__('cy')
c1r = cb.__getitem__('r') # radius
c1x = cb.__getitem__('cx')
c1y = cb.__getitem__('cy')
c0 = Circle(Point(c0x,c0y),c0r)
c1 = Circle(Point(c1x,c1y),c1r)
ls = Tangents(c0,c1)
dwg = svgwrite.Drawing()
b0 = [ls[0].begin.x,ls[0].begin.y]
e0 = [ls[0].end.x,ls[0].end.y]
ln0 = dwg.line(b0,e0)
b1 = [ls[1].begin.x,ls[1].begin.y]
e1 = [ls[1].end.x,ls[1].end.y]
ln1 = dwg.line(b1,e1)
return [ln0,ln1]
def checkLeftTangents():
# above left
print('above left')
sRadius = 1
sCenter = Point(5, 5)
sCircle = Circle(sCenter, sRadius)
bCenter = Point(10, 3)
bCircle = Circle(bCenter, sRadius + 2)
lines = Tangents(sCircle, bCircle)
print('line 1 ' + printLine(lines[0]) + ' line 2 ' + printLine(lines[1]))
# left same Y
# print('left same y')
sRadius = 1
sCenter = Point(5, 5)
sCircle = Circle(sCenter, sRadius)
bCenter = Point(10, 5)
bCircle = Circle(bCenter, sRadius + 2)
# Tangents(sCircle,bCircle)
# below left
# print('below left')
sRadius = 1
sCenter = Point(5, 5)
sCircle = Circle(sCenter, sRadius)
bCenter = Point(10, 10)
bCircle = Circle(bCenter, sRadius + 2)
def checkPoint():
p = Point(-1, 1)
print(p)
def checkCircle():
cn = Point(3, 4)
ci = Circle(cn, 121.3)
print(ci)
def checkDivergentPlacements():
# ca small, cb big below same x
print('dv below same x')
caCenter = Point(0, 0)
cbCenter = Point(0, 10)
ca = Circle(caCenter, 1)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
# ca small, cb big above same x
print('dv above same x')
caCenter = Point(0, 10)
ca = Circle(caCenter, 1)
cbCenter = Point(0, 0)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
# ca small, cb big left same y
print('dv left same y')
caCenter = Point(-5, 0)
ca = Circle(caCenter, 1)
cbCenter = Point(0, 0)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
# ca small, cb big right same y
print('dv right same y')
caCenter = Point(0, 0)
ca = Circle(caCenter, 1)
cbCenter = Point(-5, 0)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
# ca small, cb big left different y
print('dv left above')
caCenter = Point(-5, 5)
ca = Circle(caCenter, 1)
cbCenter = Point(0, 0)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
print('dv left below')
caCenter = Point(-5, 1)
ca = Circle(caCenter, 1)
cbCenter = Point(0, 3)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
# ca small, cb big right different y
print('dv right above')
caCenter = Point(0, 5)
ca = Circle(caCenter, 1)
cbCenter = Point(-5, 0)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)
print('dv right below')
caCenter = Point(0, 0)
ca = Circle(caCenter, 1)
cbCenter = Point(-5, 5)
cb = Circle(cbCenter, 5)
Tangents(ca, cb)