def transform_point(point, transform):
"""transform a point from from_cs to to_cs"""
hpoint = Vec(point)
hpoint.append(1.0)
hres = transform.mmul(hpoint)
res = vector(hres[1:-1]) / hres[-1]
return res
def transform(self, t):
"""returns a new configuration, which is this one transformed by matrix t"""
newmap = {}
for v in self.map:
p = self.map[v]
ph = Vec(p)
ph.append(1.0)
ph = t.mmul(ph)
p = vector(ph[0:-1]) / ph[-1]
newmap[v] = p
return Configuration(newmap)
