Pull request

recursive_art.py

@@ -1,6 +1,12 @@
-"""TODO: Put your header comment here."""
+"""
+Victor Bianchi - Software Design - Fall 2017
+MiniProject 2 : Computational Art
+"""
 
 import random
+from random import randint
+import math
+from math import cos, sin, tan, pi
 from PIL import Image
 
 
@@ -20,9 +26,25 @@ def build_random_function(min_depth, max_depth):
         (See the assignment writ-eup for details on the representation of
         these functions)
     """
-    # TODO: implement this
-    pass
-
+    building_blocks = ['x','y','cos_pi','sin_pi','prod','avg','tan_pi','substract',]
+    pick = random.choice(building_blocks)
+    i = random.randint(min_depth, max_depth)
+
+    if max_depth <= 1:
+        return [random.choice(['x','y','t'])]
+
+    elif pick == 'cos_pi':
+        return ['cos_pi', build_random_function(min_depth-1, max_depth-1)]
+    elif pick == 'sin_pi':
+        return ['sin_pi', build_random_function(min_depth-1, max_depth-1)]
+    elif pick == 'tan_pi':
+        return ['tan_pi', build_random_function(min_depth-1, max_depth-1)]
+    elif pick == 'prod':
+        return ['prod', build_random_function(min_depth-1, max_depth-1), build_random_function(min_depth-1, max_depth-1)]
+    elif pick == 'avg':
+        return ['avg', build_random_function(min_depth-1, max_depth-1), build_random_function(min_depth-1, max_depth-1)]
+    elif pick == 'substract':
+        return ['substract', build_random_function(min_depth-1, max_depth-1), build_random_function(min_depth-1, max_depth-1)]
 
 def evaluate_random_function(f, x, y):
     """Evaluate the random function f with inputs x,y.
@@ -43,9 +65,23 @@ def evaluate_random_function(f, x, y):
         >>> evaluate_random_function(["y"],0.1,0.02)
         0.02
     """
-    # TODO: implement this
-    pass
 
+    if f[0] == 'x':
+        return x
+    elif f[0] == 'y':
+        return y
+    elif f[0] == 'avg':
+        return 0.5 (evaluate_random_function(f[1],x,y) + evaluate_random_function(f[2],x,y))
+    elif f[0] == 'prod':
+        return (evaluate_random_function(f[1],x,y) * evaluate_random_function(f[2],x,y))
+    elif f[0] == 'substract':
+        return (evaluate_random_function(f[1],x,y) - evaluate_random_function(f[2],x,y))
+    elif f[0] == 'sin_pi':
+        return math.sin(math.pi*evaluate_random_function(f[1],x,y))
+    elif f[0] == 'tan_pi':
+        return math.tan(math.pi*evaluate_random_function(f[1],x,y))
+    elif f[0] == 'cos_pi':
+        return math.cos(math.pi*evaluate_random_function(f[1],x,y))
 
 def remap_interval(val,
                    input_interval_start,
@@ -80,9 +116,9 @@ def remap_interval(val,
         >>> remap_interval(5, 4, 6, 1, 2)
         1.5
     """
-    # TODO: implement this
-    pass
-
+    output_val =  input_interval_end - input_interval_start
+    input_val = output_interval_end - output_interval_start
+    return ((float(val - input_interval_start) * (input_val) / output_val)) + output_interval_start
 
 def color_map(val):
     """Maps input value between -1 and 1 to an integer 0-255, suitable for use as an RGB color code.
@@ -137,9 +173,9 @@ def generate_art(filename, x_size=350, y_size=350):
         x_size, y_size: optional args to set image dimensions (default: 350)
     """
     # Functions for red, green, and blue channels - where the magic happens!
-    red_function = ["x"]
-    green_function = ["y"]
-    blue_function = ["x"]
+    red_function = build_random_function(7, 9)
+    green_function = build_random_function(7, 9)
+    blue_function = build_random_function(7, 9)
 
     # Create image and loop over all pixels
     im = Image.new("RGB", (x_size, y_size))
@@ -159,13 +195,11 @@ def generate_art(filename, x_size=350, y_size=350):
 
 if __name__ == '__main__':
     import doctest
-    doctest.testmod()
+    #doctest.testmod(verbose = True)
 
-    # Create some computational art!
-    # TODO: Un-comment the generate_art function call after you
-    #       implement remap_interval and evaluate_random_function
-    # generate_art("myart.png")
+    #generate_art("example1.png")
+    #generate_art("example2.png")
 
     # Test that PIL is installed correctly
     # TODO: Comment or remove this function call after testing PIL install
-    test_image("noise.png")
+    #test_image("noise.png")