Initial revisionv1_0_r2

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 49 insertions, 0 deletions

diff --git a/sample/rcs.rb b/sample/rcs.rb
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+# random dot steraogram
+# usage: rcs.rb rcs.dat
+
+sw = 40.0	# 元のパターンの幅
+dw = 78.0	# 生成される Random Character Streogram の幅
+hdw = dw / 2.0
+w = 20.0	# 両眼の幅
+h =1.0		# 画面と基準面の距離
+d = 0.2		# 単位当たりの浮き上がり方
+ss="abcdefghijklmnopqrstuvwxyz0123456789#!$%^&*()-=\\[];'`,./"
+rnd = srand()
+
+while gets()
+#  print($_)
+  xr = -hdw; y = h * 1.0; maxxl = -999
+  s = "";
+  while xr < hdw
+    x = xr * (1 + y) - y * w / 2
+    i = (x / (1 + h) + sw / 2)
+    if (1 < i && i < $_.length);
+      c = $_[i, 1].to_i
+    else
+      c = 0
+    end
+    y = h - d * c
+    xl = xr - w * y / (1 + y);
+    if xl < -hdw || xl >= hdw || xl <= maxxl
+      tt = rand(ss.length)
+      c = ss[tt, 1]
+    else
+      c = s[xl + hdw, 1]
+      maxxl = xl
+    end
+    s += c
+    xr += 1
+  end
+  print(s, "\n")
+end
+      
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