Work on Scripts.

Add script for spectrograms.
Add Script for 'after' with effects examples.
Add space and dc bias to afters script.
Add docimages_all.py script to call all scripts.
Shared part of scripts extracted into docimages_core.py

scripts/piped-work/docimages_after.py

@@ -0,0 +1,144 @@
+# docimages_after.py
+# Sends commands to get images for the manual.
+# Images for before and after for most commands
+
+# Make sure Audacity is running first and that mod-script-pipe is enabled
+# before running this script.
+
+#load and run the common core.
+exec( open("docimages_core.py" ).read() )
+
+
+
+Commands = ["Cut", "Split", "SplitCut",
+            "Silence", "Trim",
+            "SplitNew", "Duplicate",
+            "ZoomIn", "ZoomOut", "ZoomNormal", "ZoomSel", "FitInWindow", "FitV" 
+            ]
+
+Effects  = [
+            "Reverse","FadeIn", "FadeOut", "Invert",
+            "Amplify","BassAndTreble","Compressor","Distortion","Echo",
+            "Equalization","Normalize","Phaser",
+            "Repeat","Reverb","Wahwah",
+            "HighPassFilter","LowPassFilter",
+            "NotchFilter","AdjustableFade","Delay","Limiter"               
+            ]
+
+Slow = ["ChangePitch","ChangeSpeed", "ChangeTempo","Paulstretch",
+         "TimeScale"
+            ]
+
+
+Generators = ["Chirp","DtmfTones","Noise","Tone","Pluck"]
+
+
+
+# "Delete", "Copy", - look same as cut
+# "SplitDelete" - same as splitcut
+
+ToDo = ["Paste", "Join", "DisJoin",
+        
+"ClipFix",
+"AutoDuck",
+"ClickRemoval",
+"FindClipping",
+"TruncateSilence",
+"SilenceFinder",
+"BeatFinder",
+"NyquistPrompt",
+"RhythmTrack",
+"SoundFinder",
+"SpectralEditMultiTool",
+"SpectralEditParametricEq",
+"SpectralEditShelves",
+"VocalReductionAndIsolation",
+"CrossfadeClips",
+"CrossfadeTracks",
+"RegularIntervalLabels",
+
+"Vocoder", #stereo        
+        
+]
+
+def starterTrack():
+    loadMonoTracks(1)
+    do( 'Select: First=0 Last=0 Start=10 End=130')    
+    do( 'ZoomSel' )
+    do( 'Select: Start=55 End=70')
+
+def withDcBias( amount ):
+    loadMonoTracks(1)
+    do( 'NewMonoTrack' )
+    do( 'Select: First=1 Last=1 Start=0 End=0.5' )
+    do( 'Tone: Frequency=1.0 Amplitude='+str(amount) +
+        ' Waveform=Square Interpolation=Linear' )
+    do( 'Repeat: Count=300' )
+    do( 'Join' );
+    do( 'Select: First=0 Last=1 Start=0 End=150' )
+    do( 'MixAndRender' );
+    do( 'Select: First=0 Last=0 Start=0 End=0' )
+    do( 'SetTrack: Name="Track with DC Bias"')
+    
+def spaceyTrack() :   
+    loadMonoTracks(1)
+    do( 'Select: First=0 Last=0 Start=20 End=40')
+    do( 'Silence' )
+    do( 'Select: First=0 Last=0 Start=60 End=100')
+    do( 'Silence' )
+    do( 'Select: First=0 Last=0 Start=10 End=140')
+
+
+def imageAfters( commands, doWhat):
+    starterTrack()
+    capture( 'BeforeEffect.png', 'All_Tracks_Plus' )
+    for name in commands :
+        starterTrack()
+        do( 'SetTrack: Name="'+name+'"')
+        do( name )
+        capture( 'After' + name + '1.png' , doWhat )
+        do( 'Select: Start=0 End=0')
+        capture( 'After' + name + '2.png' , doWhat )
+
+
+def generators():
+    for name in Generators :
+        makeWayForTracks()
+        do( 'NewMonoTrack' )
+        do( 'SetTrack: Name="'+name+'"')
+        do( 'Select: Start=0 End=10' )
+        do( name )
+        do( 'ZoomSel' )
+        do( 'Select: Start=0 End=0' )
+        capture( 'After' + name + '.png' , 'All_Tracks_Plus' )
+
+
+def spaceDemo():
+    spaceyTrack()
+    capture( 'BeforeTruncateSilence.png' , 'All_Tracks' )
+    do( 'Select: First=0 Last=0 Start=0 End=0')
+    capture( 'SpaceyTrack.png' , 'All_Tracks' )
+    do( 'TruncateSilence' )
+    capture( 'AfterTruncateSilence1.png' , 'All_Tracks' )
+    do( 'Select: First=0 Last=0 Start=0 End=0')
+    capture( 'AfterTruncateSilence2.png' , 'All_Tracks' )
+    spaceyTrack()
+    do( 'Disjoin' )
+    capture( 'AfterDisjoin1.png' , 'All_Tracks' )
+    do( 'Select: First=0 Last=0 Start=0 End=0')
+    capture( 'AfterDisjoin2.png' , 'All_Tracks' )
+    
+
+def biasDemo():
+    withDcBias( 0.1 )
+    capture( 'DcBias.png' , 'All_Tracks' )
+
+imageSet("After")    
+imageAfters( Commands, 'All_Tracks_Plus' ) # With ruler
+imageAfters( Effects, 'All_Tracks' ) # Without ruler
+imageAfters( Slow, 'All_Tracks' ) # Without ruler
+generators()
+spaceDemo()
+biasDemo()    
+
+