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day18 almost

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This commit is contained in:
Tyrel Souza 2022-12-18 11:02:25 -05:00
parent 6c482630c2
commit 5e8b272801
2 changed files with 152 additions and 63 deletions
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158
2022/python/day18.py
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@ -4,6 +4,11 @@ from pprint import pprint
from dataclasses import dataclass
from typing import Set, Tuple
from functools import cached_property
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
import matplotlib.pyplot as plt
@dataclass
@ -31,12 +36,24 @@ def get_neighbors(x,y,z):
(0,0,-1),# 5
(-1,0,0) # 6
)
neighbor_coords = set([(x+o[0], y+o[1], z+o[2]) for o in offsets])
return neighbor_coords
return set([(x+o[0], y+o[1], z+o[2]) for o in offsets])
def count_neighbor_coords(x,y,z):
pass
def get_flat_neighbors(x,y,z):
# Generate the six neighbor_coords
# Look at a die 6 to the left, 2 on top, one on right
# ignore top and bottom
offsets = (
(1,0,0), # 1
#(0,0,1), # 2
(0,-1,0),# 3
(0,1,0), # 4
#(0,0,-1),# 5
(-1,0,0) # 6
)
return set([(x+o[0], y+o[1], z+o[2]) for o in offsets])
def get_flat_neighbors_from(x,y,z, f):
return get_flat_neighbors(x,y,z).intersection(f)
# @shared.profile
@ -53,7 +70,7 @@ def part1(rows):
def part2(rows):
def surface_area(rows):
cubes = {}
maxX,maxY,maxZ = 0,0,0
for idx, (x,y,z) in enumerate(rows):
@ -68,77 +85,92 @@ def part2(rows):
for other in cube['not_me']:
if other in cube['n']:
potential -= 1
return potential, maxX,maxY,maxZ, cubes, _cubes
def part2(rows):
potential, maxX, maxY,maxZ,cubes,_cubes = surface_area(rows)
air = set()
for x in range(0,maxX+1):
for y in range(0,maxY+1):
for z in range(0,maxZ+1):
air.add((x,y,z))
if (x,y,z) not in _cubes:
air.add((x,y,z))
air -= _cubes # Remove all lava from air
all_air_count = len(air)
all_lava_count = len(_cubes)
possible_count = (maxX+1)*(maxY+1)*(maxZ+1)
print("all_air: ", all_air_count)
print("all_lava:", all_lava_count)
print("possible:", possible_count)
print(maxZ,maxY,maxX)
print()
air_nx = {}
for a in air:
neighbors = get_neighbors(*a)
if len(neighbors & _cubes)==6:
#print(a, "====", neighbors & _cubes)
potential -= 6
air_nx[a] = {
'lava':neighbors & _cubes or None,
'air': neighbors & air or None
}
# _ns = get_neighbors(x,y,z)
# lava_neighbors = _ns & _cubes
# if len(lava_neighbors) == 6:
# potential -= 6
print(potential)
# @shared.profile
def _part2(rows):
cubes = []
_lava = set()
for row in rows:
x,y,z = row
maxX = max(maxX,x)
maxY = max(maxY,y)
maxZ = max(maxZ,z)
cube = Cube(x=x,y=y,z=z)
cube.set_neighbor_coords()
cubes.append(cube)
_lava.add((x,y,z))
print(maxX,maxY,maxZ)
potential = len(cubes) * 6
for idx in range(len(cubes)):
cube = cubes[idx]
others = cubes[:idx] + cubes[idx+1:]
for other in others:
if other.xyz in cube.neighbor_coords:
potential -= 1
air = []
for x in range(0,maxX+1):
# loop row by row
inside = []
for z in range(0,maxZ+1):
seen = set()
seen.add((0,0,z))
for y in range(0,maxY+1):
for z in range(0,maxZ+1):
lava_count = 0
if (x,y,z) in _lava:
for x in range(0,maxX+1):
xyz = (x,y,z)
if xyz in _cubes:
#print(xyz,'is cube')
continue
ns = get_flat_neighbors_from(x,y,z, air)
for neigh in ns:
if neigh in seen and neigh not in _cubes:
seen.add(xyz)
this_level = air_in_row(air, z)
print(this_level, seen)
print(len(this_level), len(seen))
inside.extend([x for x in this_level if x not in seen])
#print()
#print(inside)
#print()
actually_inside = []
for i in inside:
ns = get_neighbors(*i)
# check for surrounded 100% by rock
rock_count = 0
for n in ns:
if n in _cubes:
rock_count +=1
if rock_count == 6:
print("in rock")
actually_inside.append(i)
continue
#check for surrounded 100% by air
air_count = 0
for n in ns:
if n in air:
air_count +=1
print("in air")
break
actually_inside.append(i)
#print(actually_inside)
tot, _, _, _, _, _ = surface_area(actually_inside)
print(tot)
print(potential - tot)
shared.render_cubes(maxX,maxY,maxZ, [x for x in actually_inside])
# is air
air_touching_lava = False
for _n in _ns:
if _n in _lava:
lava_count += 1
air_touching_lava = True
if air_touching_lava:
air.append((x,y,z))
if lava_count == 6:
potential -= 6
print(potential, air)
def air_in_row(air, z):
x = []
for a in air:
if a[2] == z:
x.append(a)
return x

57
2022/python/shared.py
View File

@ -102,3 +102,60 @@ def elapsed_timer():
yield lambda: elapser()
end = default_timer()
elapser = lambda: end - start
def render_cubes(maxX,maxY,maxZ, my_cubes):
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d.art3d import Poly3DCollection
def cuboid_data(o, size=(1,1,1)):
X = [[[0, 1, 0], [0, 0, 0], [1, 0, 0], [1, 1, 0]],
[[0, 0, 0], [0, 0, 1], [1, 0, 1], [1, 0, 0]],
[[1, 0, 1], [1, 0, 0], [1, 1, 0], [1, 1, 1]],
[[0, 0, 1], [0, 0, 0], [0, 1, 0], [0, 1, 1]],
[[0, 1, 0], [0, 1, 1], [1, 1, 1], [1, 1, 0]],
[[0, 1, 1], [0, 0, 1], [1, 0, 1], [1, 1, 1]]]
X = np.array(X).astype(float)
for i in range(3):
X[:,:,i] *= size[i]
X += np.array(o)
return X
def plotCubeAt(positions,sizes=None,colors=None, **kwargs):
if not isinstance(colors,(list,np.ndarray)): colors=["C0"]*len(positions)
if not isinstance(sizes,(list,np.ndarray)): sizes=[(1,1,1)]*len(positions)
g = []
for p,s,c in zip(positions,sizes,colors):
g.append( cuboid_data(p, size=s) )
return Poly3DCollection(np.concatenate(g),
facecolors=np.repeat(colors,6, axis=0), **kwargs)
N1 = maxX
N2 = maxY
N3 = maxZ
ma = np.random.choice([0,1], size=(N1,N2,N3), p=[0.99, 0.01])
x,y,z = np.indices((N1,N2,N3))-.5
#positions = np.c_[x[ma==1],y[ma==1],z[ma==1]]
positions = np.c_[my_cubes]
colors= np.random.rand(len(positions),3)
fig = plt.figure()
ax = fig.add_subplot(projection='3d')
ax.set_aspect('equal')
pc = plotCubeAt(positions, colors=colors,edgecolor="k")
ax.add_collection3d(pc)
ax.set_xlim([0,maxX])
ax.set_ylim([0,maxY])
ax.set_zlim([0,maxZ])
#plotMatrix(ax, ma)
#ax.voxels(ma, edgecolor="k")
plt.show()