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--- ws1617:the_art_of_music:protokolle:09 [2017/02/23 14:02]
cm.mint.2016
+++ ws1617:the_art_of_music:protokolle:09 [2017/02/24 14:02] (aktuell)
cm.mint.2016
@@ Zeile 1: / Zeile 1: @@
 ====== 2017-02-23/24: Blocktermin======
--23: Wir befinden uns in der Vollendung. Heute werden wir die Visualisierung weitestgehend beenden und uns auch mit der genauen musikalischen Umsetzung befassen.
+**2017-02-23:**
+Wir befinden uns in der Vollendung. Heute werden wir die Visualisierung weitestgehend beenden und uns auch mit der genauen musikalischen Umsetzung befassen.
+test-moving-circles b1207-beta defining new circles
+<code python>
+from __future__ import division
+import numpy as np
+import moving_circles
+import time
+from scipy.fftpack import *
+from moving_circles import Canvas, Circle
+from microlistener import MicroListener
+from random import randint, uniform
+# chose 'VISPY' or 'MATPLOTLIB'
+PREFERRED_BACKEND = 'MATPLOTLIB_WX'
+######################################################
+# One possible use case:
+# Use timer event of backend to change graphic objects.
+# Here 10 circles are created and a callback function
+# action(...) is registered to be called at each timer
+# event.
+######################################################
+###micolistener###
+CHANNELS=2
+RATE=44100
+CHUNK=2**11
+z=[]
+last_values1 = (0,0,0)
+last_values2 = (0,0,0)
+last_values3 = (0,0,0)
+def micro_callback(in_data, frame_count, time_info,status):
+	global z
+	y=np.array(np.fromstring(in_data,dtype=np.short),dtype=np.float)
+	yf = fft(y)
+	xf = np.linspace(0.0, (2.0*RATE), CHUNK/2)
+	if CHANNELS==2:
+		y=y.reshape((y.shape[0]//2,2))
+	else:
+		y=y.reshape((y.shape[0],1))
+	#print int(np.linalg.norm(y[:,0])/2000.)*'*'
+	z=np.abs(yf)
+	return (in_data, status)
+listen=MicroListener(RATE,CHANNELS,CHUNK,micro_callback)
+###
+l_kreise=[]
+def action(objects, event):
+	starttime=time.time()
+	global z, last_values1, last_values2, last_values3
+	n = 50
+	#print z[2048]/1000000.0
+	last_values1 = (last_values1[1], last_values1[2], sum(z[186:186+n])/(n*100000.0))	##1000 Hz (?)
+	endtime=time.time()
+	print starttime
+	print endtime
+#	last_values2 = (last_values2[1], last_values2[2], sum(z[19:19+n])/(n*1000000.0))	##100 Hz (?)
+#	last_values3 = (last_values3[1], last_values3[2], sum(z[1115:1115+n])/(n*10000.0))	##6000 Hz (?)
+#	circ.set_radius(sum(last_values1)/3)
+#	circ2.set_radius(sum(last_values2)/3)
+#	circ3.set_radius(sum(last_values3)/3)
+	#dt, elapsed = event.dt, event.elapsed
+	#for i,circ in enumerate(objects):
+	#    circ.move(0.7*dt*np.sin(elapsed*(i+1)), 0.7*dt*np.cos(elapsed*(i+1)))
+	#    circ.set_color( (np.abs(np.sin(elapsed*(i+1))),np.abs(np.sin(elapsed*2*(i+1))), np.abs(np.sin(elapsed*3*(i+1))),0.3) )
+	'''
+	i = 0.01
+	for circ_temp in l_kreise:
+		circ_temp.set_radius(i)
+		i+=0.005
+	'''
+last_alpha=0
+def WinkelPos(i,alpha):
+	global last_posx, last_posy, last_alpha
+	#last_alpha=0
+	#last_posx=0
+	#last_posy=0
+	#Abstand konstant 0.1
+	abstand=0.1
+	if i==0:
+		posx=0
+		posy=0
+		last_posx=posx
+		last_posy=posy
+		return (posx,posy)
+	else:
+		posx=last_posx+(np.cos(last_alpha+alpha)*abstand)
+#		print posx
+		posy=last_posy+(np.sin(last_alpha+alpha)*abstand)
+#		print posy
+		last_alpha+=alpha
+		last_posx=posx
+		last_posy=posy
+		return (posx,posy)
+# create objects, register callback and start program.
+win = Canvas()
+objects = []
+#for i in range(10):
+#	circ = Circle(win, pos=(-0.6+0.05*i,0), radius=0.1,color = (1,0,0,0.2))
+#	objects.append(circ)
+#coordinates
+x1=0.0
+y1=0.25
+x2=-0.5/np.sqrt(5)
+y2=-0.25/np.sqrt(5)
+x3=0.5/np.sqrt(5)
+y3=-0.25/np.sqrt(5)
+for i in range(20):
+	#l_kreise.append(Circle(win,pos=(randint(-400,400)/400,randint(-400,400)/400), radius=0, color=(randint(0,10)/10,randint(0,10)/10,randint(0,10)/10,0.2)))
+	l_kreise.append(Circle(win,pos=WinkelPos(i,uniform(-np.pi/2,np.pi/2)), radius=uniform(0.01,0.1), color=(randint(0,10)/10,randint(0,10)/10,randint(0,10)/10,0.2)))
+#	print i
+#circ = Circle(win, pos=(x1,y1),radius = 0.1, color=(1,0,0,0.2))
+#circ2 = Circle(win, pos=(x2,y2),radius = 0.1, color=(0,1,0,0.2))
+#circ3 = Circle(win, pos=(x3,y3),radius = 0.1, color=(0,0,1,0.2))
+while True:
+	win.set_action(action, objects)
+	#print z[0]
+	win.run()
+</code>
+**2017-02-24:**

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