edited a few patterns

Author: Robert van der Tuuk

Ledart/Patterns/Fft.py

@@ -34,8 +34,8 @@ def __init__(self, **kwargs):
 
         # self.window = numpy.bartlett(self.width)
         # self.window = numpy.blackman(self.width)
-        self.window = numpy.hamming(self.width)
-        # self.window = numpy.hanning(self.width)
+        # self.window = numpy.hamming(self.width)
+        self.window = numpy.hanning(self.width)
         # self.window = numpy.kaiser(self.width, 0)
         # self.window = [1, ] * self.width
 

Ledart/Patterns/VUmeter.py

@@ -2,6 +2,7 @@
 from Ledart.Tools.Graphics import Graphics, BLUE, WHITE, BLACK
 
 import alsaaudio
+import colorsys
 import audioop
 import struct
 import time
@@ -30,27 +31,31 @@ def mean(self, a):
     def average_lists(self, lists):
         return map(self.mean, zip(*lists))
 
+    def draw_pixel(self, x, y, color):
+        color = [int(c * 0xff) for c in colorsys.hsv_to_rgb(y / float(self.height), 1, 1)]
+        Graphics.draw_pixel(self, x, y, color)
+
     def generate(self):
         self.fill(BLACK)
         l, data = self.stream.read()
         h = 0
         if l:
             data = struct.unpack("%dh" % (len(data) / 2), data)
             self.chunks.append(data)
-            if len(self.chunks) > 10:
+            if len(self.chunks) > 100:
                 del self.chunks[0]
             data = self.average_lists(self.chunks)
             # scale values to the window.
             data = [translate(val, min(data), max(data), 1, self.height * 0.8) for val in data]
 
             for x in xrange(len(data)):
-                if self.mode == 1:
+                if self.mode == 0:
                     self.draw_line(x, self.height - data[x], x, self.height, BLUE)
-                elif self.mode == 2:
+                elif self.mode == 1:
                     self.draw_pixel(x, self.height - data[x], BLUE)
-                elif self.mode == 3:
+                elif self.mode == 2:
                     self.draw_line(x, (self.height / 2) - data[x] / 2, x, (self.height / 2) + data[x] / 2, BLUE)
-                elif self.mode == 4:
+                elif self.mode == 3:
                     if x >= (self.width - 1):
                         self.draw_pixel(x, self.height - data[x], BLUE)
                     else:
@@ -61,4 +66,4 @@ def generate(self):
             #     if not (len(data) & 1):
             #         h = audioop.max(data, 2) / 100
             #     color = [min(h, 0xff), max(0xff - h, 0), 0]
-            #     self.draw_line(x, self.height, x, self.height - h, color)
+            #     self.draw_line(x, self.height, x, self.height - h, color)

Ledart/configs/pattern_conf.py

@@ -86,11 +86,15 @@
     # dest: SpiroGraph(dims=dims, mode=2),
     # dest: MetaBalls(dims=dims),
 
-    # dest: VUmeter(dims=dims),
+    # dest: VUmeter(dims=dims, mode=0),
+    # dest: VUmeter(dims=dims, mode=1),
+    # dest: VUmeter(dims=dims, mode=2),
+    dest: VUmeter(dims=dims, mode=3),
+    
     # dest: RandomWalker(dims=dims),
     # dest: PerlinTest(dims=dims),
 
-    dest: Fft(dims=dims, mode=1),
+    # dest: Fft(dims=dims, mode=1),
     # dest: Fft(dims=dims, mode=2),
     # dest: Fft(dims=dims, mode=3),
     # dest: Fft(dims=dims, mode=4),