1 files changed, 63 insertions, 0 deletions
diff --git a/share/hackvr/examples/dothack/chaosgate.py b/share/hackvr/examples/dothack/chaosgate.py
new file mode 100755
index 0000000..56bf25d
--- /dev/null
+++ b/share/hackvr/examples/dothack/chaosgate.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+
+import math
+
+def fp(p):
+    return " {} {} {}".format(p[0],p[1],p[2])
+
+def print_rect(r):
+    print("gate addshape 4 4 {} {} {} {}".format(fp(r[0]),fp(r[1]),fp(r[2]),fp(r[3])))
+
+d=1
+
+sides = 12.0
+step = 360.0/sides
+rot=0.0
+zoff = 0.0
+while rot < 360:
+#    print("rot: {}".format(rot))
+    x1=math.sin(rot * math.pi / 180.0)
+    y1=math.cos(rot * math.pi / 180.0)
+    rot = rot + step
+    x2=math.sin(rot * math.pi / 180.0)
+    y2=math.cos(rot * math.pi / 180.0)
+
+#    print("{} {}".format(x1,y1))
+
+    ### now to calculate points for the 4 rectangles we need to draw...
+    v1 = x1 * (d+30.0) # inner first point
+    v2 = x1 * (d+32.0) # outer first point
+    v3 = x1 * (d+31.0) # center first point
+
+    v4 = y1 * (d+30.0)
+    v5 = y1 * (d+32.0)
+    v6 = y1 * (d+31.0)
+
+    v7 = x2 * (d+30.0)
+    v8 = x2 * (d+32.0)
+    v9 = x2 * (d+31.0)
+
+    v10 = y2 * (d+30.0)
+    v11 = y2 * (d+32.0)
+    v12 = y2 * (d+31.0)
+
+    p1 = (v1, v4, zoff + 0.0)
+    p2 = (v2, v5, zoff + 0.0)
+    p3 = (v3, v6, zoff + 1.0)
+    p4 = (v3, v6, zoff - 1.0)
+
+    p5 = (v7, v10, zoff + 0.0)
+    p6 = (v8, v11, zoff + 0.0)
+    p7 = (v9, v12, zoff + 1.0)
+    p8 = (v9, v12, zoff - 1.0)
+
+    r1 = (p1, p5, p7, p3) #inner near
+    r2 = (p1, p5, p8, p4) #inner far
+    r3 = (p2, p6, p7, p3) #outer near
+    r4 = (p2, p6, p8, p4) #outer far
+
+    ### first rectange is...
+    print_rect(r1)
+    print_rect(r2)
+    print_rect(r3)
+    print_rect(r4)