Update 15.py

src/ch05/15.py

@@ -0,0 +1,36 @@
+import pylab
+import numpy as np
+from random import *
+pi=np.pi
+n=1000
+ts=np.linspace(0,12*pi,n)
+xs=np.sin(ts)*(np.exp(np.cos(ts))-2*np.cos(4*ts)-np.sin(ts/12)**5)
+ys=np.cos(ts)*(np.exp(np.cos(ts))-2*np.cos(4*ts)-np.sin(ts/12)**5)
+
+
+map=[[0x8,0x8,0x7f,0x49,0x7f,0x8,0x8],[0x8,0x8,0x3e,0x2a,0x7f,0x14,0x63]]
+R,C=7,7
+ds=5
+#m=int(input("> "))
+m = 1
+ds=20
+pylab.axis("off")
+for r in range(R):
+    for L in range(len(map)):
+        for c in range(C-1,-1,-1):
+            if (map[L][r]>>c)%2:
+                a=2*pi*random()
+                sina=np.sin(a)
+                cosa=np.cos(a)
+                ra=(1/m)*(0.8+0.2*random())
+                for i in range(m):
+                    for j in range(m):
+
+                        dx=(C-1-c)*ds+i*(ds/m)+L*(C+1)*ds
+                        dy=(R-1-r)*ds+j*(ds/m)
+
+                        xs2=(cosa*xs-sina*ys)*ra+dx
+                        ys2=(sina*xs+cosa*ys)*ra+dy        
+                        cs=[random()for k in range(3)]
+                        pylab.fill(xs2,ys2,color=cs)
+pylab.show()