animation library

.gitignore

@@ -1,3 +1,4 @@
+gif-*
 # Created by https://www.toptal.com/developers/gitignore/api/python
 # Edit at https://www.toptal.com/developers/gitignore?templates=python
 

2021/python/anim.py

@@ -0,0 +1,49 @@
+from matrix import get_size, pmx
+import imageio
+import matplotlib.pyplot as plt
+import numpy as np
+from copy import deepcopy
+
+
+class Animate:
+    def __init__(self, mx, day="CHANGEME"):
+        self.mx= mx
+        _size = get_size(mx)
+        self.height = _size[0]
+        self.width = _size[1]
+        self.day = day
+        self.frames = [deepcopy(mx)]
+
+    def add_frame(self, frame):
+        self.frames.append(deepcopy(frame))
+
+    def print(self):
+        for f in self.frames:
+            pmx(f)
+            print("-")
+
+
+    def animate(self, save=False, or_frames=False):
+        last_file = 0
+        for f_idx, frame in enumerate(self.frames):
+            current = np.zeros_like(self.mx)
+            for y, row in enumerate(frame):
+                for x, col in enumerate(row):
+                    current[y][x] = frame[y][x]
+            pmx(current)
+    
+            fig, ax = plt.subplots()
+            ax.imshow(current, cmap=plt.cm.gray)
+            ax.axis("off")
+            if save:
+                plt.savefig(f"{self.day}/{f_idx:03}.png")
+            plt.close()
+    
+        with imageio.get_writer(f"{self.day}/day{self.day}.gif", mode="I") as writer:
+            names = [f"{self.day}/{x:03}.png" for x in range(len(self.frames))]
+            for filename in names:
+                try:
+                    image = imageio.imread(filename)
+                    writer.append_data(image)
+                except FileNotFoundError:
+                    pass

2021/python/day09.py

@@ -69,6 +69,7 @@ class Smoke:
         return prod(largest)
 
     def animate(self, save=False):
+        breakpoint()
         largest = [x for x in self.by_center if x[0] in self.largest][-3:]
         current = np.zeros_like(self.mx)
         shuf = self.by_center[:]

2022/python/anim.py

@@ -2,45 +2,37 @@ from matrix import get_size, pmx
 import imageio
 import matplotlib.pyplot as plt
 import numpy as np
-from copy import deepcopy
-
 
 class Animate:
     def __init__(self, mx, day="CHANGEME"):
-        self.mx= mx
+        self.mx = mx
+        self.day = day
         _size = get_size(mx)
         self.height = _size[0]
         self.width = _size[1]
-        self.day = day
-        self.frames = [deepcopy(mx)]
+        self.f_count = -1
 
     def add_frame(self, frame):
-        self.frames.append(deepcopy(frame))
+        self.f_count += 1
+        print(self.f_count)
+        self.write_frame(frame) 
 
-    def print(self):
-        for f in self.frames:
-            pmx(f)
-            print("-")
-
-
-    def animate(self, save=False, or_frames=False):
-        last_file = 0
-        for f_idx, frame in enumerate(self.frames):
+    def write_frame(self, frame):
         current = np.zeros_like(self.mx)
         for y, row in enumerate(frame):
             for x, col in enumerate(row):
                 current[y][x] = frame[y][x]
-            pmx(current)
-    
         fig, ax = plt.subplots()
         ax.imshow(current, cmap=plt.cm.gray)
         ax.axis("off")
-            if save:
-                plt.savefig(f"{self.day}/{f_idx:03}.png")
+        _figpath = (f"gif-{self.day}/{self.f_count:05}.png")
+        plt.savefig(_figpath)
         plt.close()
 
-        with imageio.get_writer(f"{self.day}/day{self.day}.gif", mode="I") as writer:
-            names = [f"{self.day}/{x:03}.png" for x in range(len(self.frames))]
+    def animate(self, frameskip=1):
+        with imageio.get_writer(f"gif-{self.day}/day{self.day}.gif", mode="I") as writer:
+            names = [f"gif-{self.day}/{x:05}.png" for x in range(0,self.f_count, frameskip)]
+            print(names)
             for filename in names:
                 try:
                     image = imageio.imread(filename)

2022/python/day09.py

@@ -1,9 +1,11 @@
 from pprint import pprint as pp
+
+from anim import Animate
 import shared
 import matrix
 
-MATRIX_SIZE = 500
-#MATRIX_SIZE = 40 # sample
+MATRIX_SIZE = 400
+ATRIX_SIZE = 40 # sample
 HALF = MATRIX_SIZE // 2
 
 H = [HALF,HALF]
@@ -25,6 +27,7 @@ DIRS = {
 
 def part1(steps):
     field = matrix.matrix_of_size(MATRIX_SIZE,MATRIX_SIZE)
+    anim = Animate(field, day="09")
 
     for direction, amount in steps:
         # move HEAD
@@ -73,14 +76,18 @@ def part1(steps):
     
             T[0] += tY
             T[1] += tX
+            anim.add_frame(field)
 
         field[T[0]][T[1]] = 1 # mark visited tails
     print(matrix.sum_matrix(field))
+    anim.animate()
 
         
 def part2(steps):
     field = matrix.matrix_of_size(MATRIX_SIZE,MATRIX_SIZE)
+    anim = Animate(field, day="09")
     S = [[HALF,HALF],] # HEAD ONLY
+    _cur_frame = 0
     for x in range(9):
         S.append([HALF,HALF])
 
@@ -136,15 +143,18 @@ def part2(steps):
     
                 S[knot_idx][0] += tY
                 S[knot_idx][1] += tX
-
+                if _cur_frame % 25 == 0:
+                    anim.add_frame(field)
+                _cur_frame += 1
             field[S[-1][0]][S[-1][1]] = 1 # mark visited tails
     print(matrix.sum_matrix(field))
+    anim.animate()
 
 
 
 def main():
     rows = [x.split(" ") for x in shared.load_rows(9)]
-    part1(rows)
+    #part1(rows)
     part2(rows)
 
 

2022/samples/day09.txt

@@ -6,3 +6,11 @@ R 4
 D 1
 L 5
 R 2
+R 5
+U 8
+L 8
+D 3
+R 17
+D 10
+L 25
+U 20