fix Scissor::Tape#stretch

youpy · Dec 19, 2011 · 7e961a0 · 7e961a0
1 parent 7cf4b43
commit 7e961a0
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/lib/scissor/tape.rb b/lib/scissor/tape.rb
@@ -193,7 +193,7 @@ def pitch(pitch, stretch = false)
     end
 
     def stretch(factor)
-      factor_for_pitch = ((100 / factor.to_f) * 100).to_i
+      factor_for_pitch = 1 / (factor.to_f / 100) * 100
       pitch(factor_for_pitch, true)
     end
 

diff --git a/spec/scissor_spec.rb b/spec/scissor_spec.rb
@@ -182,11 +182,11 @@
   end
 
   it "should stretch" do
-    scissor = @mp3.slice(0, 10) + @mp3.slice(0, 5)
+    scissor = @mp3.slice(0, 0.1)
 
-    scissor.duration.should eql(15.0)
-    scissor.pitch(50, true).duration.should eql(30.0)
-    scissor.stretch(200).duration.should eql(30.0)
+    scissor.duration.should eql(0.1)
+    scissor.pitch((0.1 / 120) * 100, true).duration.should be_close(120.0, 0.1)
+    scissor.stretch((120 / 0.1) * 100).duration.should be_close(120.0, 0.1)
   end
 
   it "should join instances of scissor" do