Apply patch [#33999] Wrapping mode for the "translate" compositing node

this patch enables the translate node to wrap around the image borders. This is especially needed if the translate node is not used to position elements on a layer but when it is used instead for seamless backgrounds like mountains or clouds that should be repeated over time (by animating the x/y values).

No trunk without docs! So here is my documentation: http://wiki.blender.org/index.php/User:Plasmasolutions/TranslateNodeExtension

The code is properly documented and should be easy to read and understand. When there are any problems or issues, please comment, I'll tackle them right away!

Greetings, Thomas Beck


 * optimized determination dependant areas
 * fixed some issues with scale node

There are still some issues when scaling very small values (x=0.0001)

 - At Mind -

2 files changed, 23 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index fe5b6e15f44..f5e3867cfe4 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -4225,6 +4225,28 @@ static void def_cmp_trackpos(StructRNA *srna)
 	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
 }
 
+static void def_cmp_translate(StructRNA *srna)
+{
+	static EnumPropertyItem translate_items[] = {
+		{0, "NONE",	 0, "None",		"No wrapping on x and y"},
+		{1, "XAXIS", 0, "X-Axis",	"Wrap all pixels on the x-Axis"},
+	    {2, "YAXIS", 0, "Y-Axis",	"Wrap all pixels on the y-Axis"},
+	    {3, "BOTH", 0, "Both axes",	"Wrap all pixels on the both axes"},
+		{0, NULL, 0, NULL, NULL}
+	};
+
+	PropertyRNA *prop;
+
+	RNA_def_struct_sdna_from(srna, "NodeTranslateData", "storage");
+
+	prop = RNA_def_property(srna, "wrap_axis", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "wrap_axis");
+	RNA_def_property_enum_items(prop, translate_items);
+	RNA_def_property_ui_text(prop, "Wrapping", "Wrap image on a specific axis");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+}
+
+
 /* -- Texture Nodes --------------------------------------------------------- */
 
 static void def_tex_output(StructRNA *srna)
diff --git a/source/blender/makesrna/intern/rna_nodetree_types.h b/source/blender/makesrna/intern/rna_nodetree_types.h
index 46f2306f284..d6e0ce2f11a 100644
--- a/source/blender/makesrna/intern/rna_nodetree_types.h
+++ b/source/blender/makesrna/intern/rna_nodetree_types.h
@@ -127,7 +127,7 @@ DefNode( CompositorNode, CMP_NODE_R_LAYERS,       def_cmp_render_layers,  "R_LAY
 DefNode( CompositorNode, CMP_NODE_COMPOSITE,      0,                      "COMPOSITE",      Composite,        "Composite",         ""              )
 DefNode( CompositorNode, CMP_NODE_OUTPUT_FILE,    def_cmp_output_file,    "OUTPUT_FILE",    OutputFile,       "File Output",       ""              )
 DefNode( CompositorNode, CMP_NODE_TEXTURE,        def_texture,            "TEXTURE",        Texture,          "Texture",           ""              )
-DefNode( CompositorNode, CMP_NODE_TRANSLATE,      0,                      "TRANSLATE",      Translate,        "Translate",         ""              )
+DefNode( CompositorNode, CMP_NODE_TRANSLATE,      def_cmp_translate,      "TRANSLATE",      Translate,        "Translate",         ""              )
 DefNode( CompositorNode, CMP_NODE_ZCOMBINE,       def_cmp_zcombine,       "ZCOMBINE",       Zcombine,         "Z Combine",         ""              )
 DefNode( CompositorNode, CMP_NODE_COMBRGBA,       0,                      "COMBRGBA",       CombRGBA,         "Combine RGBA",      ""              )
 DefNode( CompositorNode, CMP_NODE_DILATEERODE,    def_cmp_dilate_erode,   "DILATEERODE",    DilateErode,      "Dilate/Erode",      ""              )