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--- lehrkraefte:blc:math:oxocard [2019/04/04 22:16]
Ivo Blöchliger created
+++ lehrkraefte:blc:math:oxocard [2019/04/05 10:08] (current)
Ivo Blöchliger
@@ Line 2: / Line 2: @@
   * [[https://www.tigerjython4kids.ch/index.php?inhalt_links=robotik/navigation.inc.php&inhalt_mitte=robotik/oxocard/sequenz.inc.php|Tutorial]]
+<code python oxocolors.py>
+from oxocard import *
+from random import randint
+num = 3
+points = [[randint(0,7), randint(0,7)] for i in range(num)]
+vecs = [[0.005*randint(20,100), 0.005*randint(20,100)] for i in range(num)]
+def glocke(p1,p2):
+    d2 = (p1[0]-p2[0])**2+(p1[1]-p2[1])**2
+    return int(255.0/(1.0+d2/5))
+enableRepaint(False)
+while True:
+    for i in range(8):
+        for k in range(8):
+            rgb = [glocke(points[c],[i,k]) for c in range(3)]
+            dot(i, k, rgb)
+    for c in range(num):
+        for i in range(2):
+            points[c][i]+=vecs[c][i]
+            if (points[c][i]<-2 or points[c][i]>10):
+                vecs[c][i]=-vecs[c][i]
+                points[c][i]+=vecs[c][i]
+    repaint()
+</code>
+<code python accelerodemo.py>
+from oxocard import *
+from random import randint
+from oxoaccelerometer import *
+acc = Accelerometer.create()
+num = 12
+points = [[randint(0,7), randint(0,7)] for i in range(num)]
+colors = []
+for i in range(num):
+    colors.append([randint(50,255),randint(50,255),randint(50,255)])
+grid = [[False for i in range(8)] for j in range(8)]
+for p in points:
+    grid[p[0]][p[1]]=True
+def getDir(p):
+    if p<1:
+        return -1
+    if p>2:
+        return 1
+    return 0
+def onGrid(p):
+    return p[0]>=0 and p[0]<=7 and p[1]>=0 and p[1]<=7
+def add(p,v):
+    return [p[0]+v[0],p[1]+v[1]]
+enableRepaint(False)
+while True:
+    clear()
+    pref = [acc.getX()/4.0, -acc.getY()/4.0]  # preferred direction of movement
+    for i in range(num):
+        p = points[i]
+        v = [getDir(randint(0,300)/100.0+pref[k]) for k in range(2)]
+        r = add(p,v)
+        if onGrid(r):
+            if grid[r[0]][r[1]]==False:
+                grid[r[0]][r[1]]=True
+                grid[p[0]][p[1]]=False
+                p[0]=r[0]
+                p[1]=r[1]
+        dot(p[0],p[1],colors[i])
+    repaint()
+</code>