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[mistelix] Star wipe extension

commit 4e2b383467d562b3e970b5c410804e6965ffbc0d
Author: Hector Blanco de Frutos <hectorblanco gmail com>
Date:   Wed Jun 10 19:19:16 2009 +0200

    Star wipe extension
---
 configure.in                                       |    3 +-
 extensions/SlideTransitions/Makefile.am            |    3 +-
 extensions/SlideTransitions/StarWipe/Makefile.am   |   42 ++++++
 .../SlideTransitions/StarWipe/StarWipe.addin.xml   |   21 +++
 extensions/SlideTransitions/StarWipe/StarWipe.cs   |  136 ++++++++++++++++++++
 .../SlideTransitions/StarWipe/StarWipeFivePoint.cs |   56 ++++++++
 .../SlideTransitions/StarWipe/StarWipeFourPoint.cs |   56 ++++++++
 .../SlideTransitions/StarWipe/StarWipeSixPoint.cs  |   56 ++++++++
 8 files changed, 371 insertions(+), 2 deletions(-)

diff --git a/configure.in b/configure.in
index 74ec42a..d93be09 100644
--- a/configure.in
+++ b/configure.in
@@ -132,9 +132,10 @@ po/Makefile.in
 libmistelix/Makefile
 extensions/Makefile
 extensions/SlideTransitions/Makefile
-extensions/SlideTransitions/Fade/Makefile
 extensions/SlideTransitions/BarWipe/Makefile
 extensions/SlideTransitions/BarnDoorWipe/Makefile
+extensions/SlideTransitions/Fade/Makefile
+extensions/SlideTransitions/StarWipe/Makefile
 extensions/Effects/Makefile
 extensions/Effects/Grayscale/Makefile
 extensions/Effects/SepiaTone/Makefile
diff --git a/extensions/SlideTransitions/Makefile.am b/extensions/SlideTransitions/Makefile.am
index 21e2c55..f30efe2 100644
--- a/extensions/SlideTransitions/Makefile.am
+++ b/extensions/SlideTransitions/Makefile.am
@@ -1,4 +1,5 @@
 SUBDIRS = 			\
 	Fade	\
 	BarWipe \
-	BarnDoorWipe
+	BarnDoorWipe \
+	StarWipe
diff --git a/extensions/SlideTransitions/StarWipe/Makefile.am b/extensions/SlideTransitions/StarWipe/Makefile.am
new file mode 100644
index 0000000..559a903
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/Makefile.am
@@ -0,0 +1,42 @@
+PLUGIN_NAME = StarWipe
+
+PLUGIN_MANIFEST = $(PLUGIN_NAME).addin.xml
+
+PLUGIN_ASSEMBLY = $(PLUGIN_NAME).dll
+
+PLUGIN_SOURCES =			\
+	$(srcdir)/StarWipe.cs		\
+	$(srcdir)/StarWipeFivePoint.cs	\
+	$(srcdir)/StarWipeFourPoint.cs	\
+	$(srcdir)/StarWipeSixPoint.cs
+
+REFS =					\
+	-r:$(top_builddir)/src/mistelix.exe
+
+PKGS =					\
+	-pkg:gtk-sharp-2.0
+
+RESOURCES =				\
+	-resource:$(srcdir)/$(PLUGIN_MANIFEST)
+
+all: $(PLUGIN_ASSEMBLY)
+
+mpack: $(PLUGIN_ASSEMBLY)
+	mautil p $(PLUGIN_ASSEMBLY)
+
+$(PLUGIN_ASSEMBLY): $(PLUGIN_SOURCES) $(PLUGIN_MANIFEST)
+	$(CSC) -target:library -out:$@ $(CSC_DEFINES) $(PLUGIN_SOURCES) $(REFS) $(PKGS) $(ASSEMBLIES) $(RESOURCES) -r:Mono.Posix -r:Mono.Cairo
+
+plugindir = $(pkglibdir)/extensions
+
+plugin_DATA =			\
+	$(PLUGIN_ASSEMBLY)
+
+EXTRA_DIST = 			\
+	$(PLUGIN_SOURCES)	\
+	$(PLUGIN_MANIFEST)
+
+CLEANFILES =			\
+	$(PLUGIN_ASSEMBLY)	\
+	$(PLUGIN_ASSEMBLY).mdb	\
+	*.mpack
diff --git a/extensions/SlideTransitions/StarWipe/StarWipe.addin.xml b/extensions/SlideTransitions/StarWipe/StarWipe.addin.xml
new file mode 100644
index 0000000..022cef5
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/StarWipe.addin.xml
@@ -0,0 +1,21 @@
+<Addin namespace="Mistelix"
+	version="0.20"
+	name="StarWipe"
+	description="StarWipe slideshow transition"
+	author="Hector Blanco de Frutos"
+	url=""
+	defaultEnabled="true"
+	category="SlideTransitions">
+
+	<Dependencies>
+		<Addin id="Mistelix" version="0.20"/>
+	</Dependencies>
+
+	<Extension path="/Mistelix/SlideTransitions">
+		<SlideTransitions type="Mistelix.Transitions.StarWipeFourPoint" />
+		<SlideTransitions type="Mistelix.Transitions.StarWipeFivePoint" />
+		<SlideTransitions type="Mistelix.Transitions.StarWipeSixPoint" />
+	</Extension>
+
+</Addin>
+ 
diff --git a/extensions/SlideTransitions/StarWipe/StarWipe.cs b/extensions/SlideTransitions/StarWipe/StarWipe.cs
new file mode 100644
index 0000000..845ef2b
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/StarWipe.cs
@@ -0,0 +1,136 @@
+//
+// Copyright (C) 2009 Hector Blanco de Frutos, hectorblanco gmail com
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using Mistelix.DataModel;
+using Mono.Unix;
+using Mistelix;
+using Cairo;
+
+using Mistelix.Widgets;
+using Mistelix.Core;
+
+namespace Mistelix.Transitions
+{
+	public abstract class StarWipe: Transition
+	{
+		protected SlideImage CreateImage (int points, double radius)
+		{	
+			double percentage;
+
+			percentage = ((1d / Frames) * CurrentFrame);
+			SlideImage image = new SlideImage ();
+			image.CopyProperties (Source);
+			image.Pixels = new byte [Target.Stride * Target.Height];
+
+			SlideImage tmp = new SlideImage ();
+			tmp.CopyProperties (Target);
+
+			double cx = Convert.ToInt32 ((Source.Width / 2));
+			double cy = Convert.ToInt32 ((Source.Height / 2));
+			double r1 = Target.Width * percentage;
+			double r2 = Target.Width * percentage * 0.5;
+			int pixels = 0;
+						
+			DataImageSurface draw = Source.ToDataImageSurface ();
+
+	    		using (Context gr = new Context (draw))
+                        {
+				// First paint in black the image.
+				gr.Save ();
+				gr.MoveTo (0,0);
+				gr.LineTo (Target.Width, 0);
+				gr.LineTo (Target.Width, Target.Height);
+				gr.LineTo (0, Source.Height);
+				gr.ClosePath ();
+				gr.Color = new Color (0,0,0);
+				gr.Fill ();
+				gr.Save ();
+				
+				double x, y;
+				double x1, y1;
+				// Draw the points of the star, creating a path with a line
+				for (int i = 0; i < points; i = i + 2)
+				{
+					x = cx + (r1 * System.Math.Cos (i * radius - System.Math.PI / 2));
+					y = cy + (r1 * System.Math.Sin (i * radius - System.Math.PI / 2));
+					gr.LineTo (new PointD (x, y));
+					
+					x1 = cx + (r2 * System.Math.Cos ((i + 1) * radius - System.Math.PI / 2));
+					y1 = cy + (r2 * System.Math.Sin ((i + 1) * radius - System.Math.PI / 2));
+					gr.LineTo (new PointD (x1, y1));
+		        	}
+				
+				gr.ClosePath ();
+				// Fill the resulting polygon with a color
+				gr.Color = new Color (1, 115, 0);
+			    	gr.Fill ();
+				gr.Restore ();
+				tmp.Pixels = draw.Get24bitsPixBuf ();
+
+				bool sourced = percentage < 0.5;
+        			
+				if (sourced)
+                        		Array.Copy (Source.Pixels, image.Pixels, Source.Stride * Source.Height);
+				else 
+                                	Array.Copy (Target.Pixels, image.Pixels, Target.Stride * Target.Height);
+				
+				// Draw target image to the star
+				// Compare Target picture with the temporary
+				// If in the temporary we have found a black pixel, draw a pixel from the Source slide
+				// If in the temporary we have found a non-black pixel, draw a pixel from the Target slide
+				for (int h = 0; h < Target.Height; h++)
+				{
+					int pos = h *  Target.Stride;
+					int posTMP = h * Target.Width * Target.Channels;
+					for (int w = 0; w < Target.Width; w++)
+					{
+						if (tmp.Pixels[posTMP] != 0) {
+                                                        if (sourced) {
+							        for (int c = 0; c < Target.Channels; c++)
+								{
+								        image.Pixels[pos + c] = Target.Pixels[pos + c];
+                                                                        pixels++;
+							        }
+                                                        }
+						}else{
+                                                        if (sourced == false) {
+						                for (int c = 0; c < Target.Channels; c++)
+								{
+							        	image.Pixels[pos + c] = Source.Pixels[pos + c];
+                                                                        pixels++;
+							        }
+                                                        }
+						}
+
+						pos += Target.Channels;
+						posTMP += Target.Channels;
+					}
+				}
+			}
+
+			((IDisposable) draw).Dispose ();
+			return image;
+		}
+	}
+}
diff --git a/extensions/SlideTransitions/StarWipe/StarWipeFivePoint.cs b/extensions/SlideTransitions/StarWipe/StarWipeFivePoint.cs
new file mode 100644
index 0000000..f031725
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/StarWipeFivePoint.cs
@@ -0,0 +1,56 @@
+//
+// Copyright (C) 2009 Hector Blanco de Frutos, hectorblanco gmail com
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using Mistelix.DataModel;
+using Mono.Unix;
+using Mistelix;
+using Cairo;
+
+using Mistelix.Widgets;
+using Mistelix.Core;
+
+namespace Mistelix.Transitions
+{
+	public class StarWipeFivePoint: StarWipe
+	{
+		public override string DisplayName {
+			get { return ( Catalog.GetString ("Star Wipe (five points)")); }
+		}
+
+		public override string Name {
+			get { return ("StarWipeFivePoint"); }
+		}
+
+		public override object Current { 
+			get {
+				return CreateImage ();
+			}
+		}
+
+		public SlideImage CreateImage ()
+		{
+			return CreateImage (9,  System.Math.PI / 5);
+		}
+	}
+}
diff --git a/extensions/SlideTransitions/StarWipe/StarWipeFourPoint.cs b/extensions/SlideTransitions/StarWipe/StarWipeFourPoint.cs
new file mode 100644
index 0000000..ca917d1
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/StarWipeFourPoint.cs
@@ -0,0 +1,56 @@
+//
+// Copyright (C) 2009 Hector Blanco de Frutos, hectorblanco gmail com
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using Mistelix.DataModel;
+using Mono.Unix;
+using Mistelix;
+using Cairo;
+
+using Mistelix.Widgets;
+using Mistelix.Core;
+
+namespace Mistelix.Transitions
+{
+	public class StarWipeFourPoint: StarWipe
+	{
+		public override string DisplayName {
+			get { return ( Catalog.GetString ("Star Wipe (four points)")); }
+		}
+
+		public override string Name {
+			get { return ("StarWipeFourPoint"); }
+		}
+
+		public override object Current { 
+			get {
+				return CreateImage ();
+			}
+		}
+
+		public SlideImage CreateImage ()
+		{
+			return CreateImage (7,  System.Math.PI / 4);
+		}
+	}
+}
diff --git a/extensions/SlideTransitions/StarWipe/StarWipeSixPoint.cs b/extensions/SlideTransitions/StarWipe/StarWipeSixPoint.cs
new file mode 100644
index 0000000..34ff2bb
--- /dev/null
+++ b/extensions/SlideTransitions/StarWipe/StarWipeSixPoint.cs
@@ -0,0 +1,56 @@
+//
+// Copyright (C) 2009 Hector Blanco de Frutos, hectorblanco gmail com
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using Mistelix.DataModel;
+using Mono.Unix;
+using Mistelix;
+using Cairo;
+
+using Mistelix.Widgets;
+using Mistelix.Core;
+
+namespace Mistelix.Transitions
+{
+	public class StarWipeSixPoint: StarWipe
+	{
+		public override string DisplayName {
+			get { return ( Catalog.GetString ("Star Wipe (six points)")); }
+		}
+
+		public override string Name {
+			get { return ("StarWipeSixPoint"); }
+		}
+
+		public override object Current { 
+			get {
+				return CreateImage ();
+			}
+		}
+
+		public SlideImage CreateImage ()
+		{
+			return CreateImage (11,  System.Math.PI / 6);
+		}
+	}
+}
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