Code

Filters. Custom predefined filters update and new ABC filters.
[inkscape.git] / src / extension / internal / filter / experimental.h
old mode 100644 (file)
new mode 100755 (executable)
index 7bf27be..acd2588
@@ -3,10 +3,16 @@
 /* Change the 'EXPERIMENTAL' above to be your file name */
 
 /*
- * Copyright (C) 2010 Authors:
+ * Copyright (C) 2011 Authors:
  *   Ivan Louette (filters)
  *   Nicolas Dufour (UI) <nicoduf@yahoo.fr>
  *
+ * Experimental filters (no assigned menu)
+ *   Chromolitho
+ *   Drawing
+ *   Posterize
+ *   Posterize basic
+ *
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 /* ^^^ Change the copyright to be you and your e-mail address ^^^ */
@@ -22,6 +28,368 @@ namespace Extension {
 namespace Internal {
 namespace Filter {
 
+/**
+    \brief    Custom predefined Chromolitho filter.
+    
+    Chromo effect with customizable edge drawing and graininess
+
+    Filter's parameters:
+    * Drawing (boolean, default checked) -> Checked = blend1 (in="convolve1"), unchecked = blend1 (in="composite1")
+    * Transparent (boolean, default unchecked) -> Checked = colormatrix5 (in="colormatrix4"), Unchecked = colormatrix5 (in="component1")
+    * Invert (boolean, default false) -> component1 (tableValues) [adds a trailing 0]
+    * Dented (boolean, default false) -> component1 (tableValues) [adds intermediate 0s]
+    * Lightness (0.->10., default 0.) -> composite1 (k1)
+    * Saturation (0.->1., default 1.) -> colormatrix3 (values)
+    * Noise reduction (1->1000, default 20) -> convolve (kernelMatrix, central value -1001->-2000, default -1020)
+    * Drawing blend (enum, default Normal) -> blend1 (mode)
+    * Smoothness (0.01->10, default 1) -> blur1 (stdDeviation)
+    * Grain (boolean, default unchecked) -> Checked = blend2 (in="colormatrix2"), Unchecked = blend2 (in="blur1")
+        * Grain x frequency (0.->100, default 100) -> turbulence1 (baseFrequency, first value)
+        * Grain y frequency (0.->100, default 100) -> turbulence1 (baseFrequency, second value)
+        * Grain complexity (1->5, default 1) -> turbulence1 (numOctaves)
+        * Grain variation (0->1000, default 0) -> turbulence1 (seed)
+        * Grain expansion (1.->50., default 1.) -> colormatrix1 (n-1 value)
+        * Grain erosion (0.->40., default 0.) -> colormatrix1 (nth value) [inverted]
+        * Grain color (boolean, default true) -> colormatrix2 (values)
+        * Grain blend (enum, default Normal) -> blend2 (mode)
+*/
+class Chromolitho : public Inkscape::Extension::Internal::Filter::Filter {
+protected:
+       virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
+
+public:
+       Chromolitho ( ) : Filter() { };
+       virtual ~Chromolitho ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
+
+       static void init (void) {
+               Inkscape::Extension::build_from_mem(
+                       "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
+                               "<name>" N_("Chromolitho, custom") "</name>\n"
+                               "<id>org.inkscape.effect.filter.Chromolitho</id>\n"
+                   "<param name=\"tab\" type=\"notebook\">\n"
+                    "<page name=\"optionstab\" _gui-text=\"Options\">\n"
+                        "<param name=\"drawing\" gui-text=\"" N_("Drawing mode") "\" type=\"boolean\" >true</param>\n"
+                        "<param name=\"dblend\" gui-text=\"" N_("Drawing blend:") "\" type=\"enum\">\n"
+                            "<_item value=\"darken\">Darken</_item>\n"
+                            "<_item value=\"normal\">Normal</_item>\n"
+                            "<_item value=\"multiply\">Multiply</_item>\n"
+                            "<_item value=\"screen\">Screen</_item>\n"
+                            "<_item value=\"lighten\">Lighten</_item>\n"
+                        "</param>\n"
+                        "<param name=\"transparent\" gui-text=\"" N_("Transparent") "\" type=\"boolean\" >false</param>\n"
+                        "<param name=\"dented\" gui-text=\"" N_("Dented") "\" type=\"boolean\" >false</param>\n"
+                        "<param name=\"inverted\" gui-text=\"" N_("Inverted") "\" type=\"boolean\" >false</param>\n"
+                        "<param name=\"light\" gui-text=\"" N_("Lightness:") "\" type=\"float\" min=\"0\" max=\"10\">0</param>\n"
+                        "<param name=\"saturation\" gui-text=\"" N_("Saturation:") "\" type=\"float\" min=\"0\" max=\"1\">1</param>\n"
+                        "<param name=\"noise\" gui-text=\"" N_("Noise reduction:") "\" type=\"int\" min=\"1\" max=\"1000\">10</param>\n"
+                        "<param name=\"smooth\" gui-text=\"" N_("Smoothness:") "\" type=\"float\" min=\"0.01\" max=\"10\">1</param>\n"
+                    "</page>\n"
+                    "<page name=\"graintab\" _gui-text=\"Grain\">\n"
+                        "<param name=\"grain\" gui-text=\"" N_("Grain mode") "\" type=\"boolean\" >true</param>\n"
+                        "<param name=\"grainxf\" gui-text=\"" N_("X frequency:") "\" type=\"float\" min=\"0\" max=\"100\">100</param>\n"
+                        "<param name=\"grainyf\" gui-text=\"" N_("Y frequency:") "\" type=\"float\" min=\"0\" max=\"100\">100</param>\n"
+                        "<param name=\"grainc\" gui-text=\"" N_("Complexity:") "\" type=\"int\" min=\"1\" max=\"5\">1</param>\n"
+                        "<param name=\"grainv\" gui-text=\"" N_("Variation:") "\" type=\"int\" min=\"0\" max=\"1000\">0</param>\n"
+                        "<param name=\"grainexp\" gui-text=\"" N_("Expansion:") "\" type=\"float\" min=\"1\" max=\"50\">1</param>\n"
+                        "<param name=\"grainero\" gui-text=\"" N_("Erosion:") "\" type=\"float\" min=\"0\" max=\"40\">0</param>\n"
+                        "<param name=\"graincol\" gui-text=\"" N_("Color") "\" type=\"boolean\" >true</param>\n"
+                        "<param name=\"gblend\" gui-text=\"" N_("Grain blend:") "\" type=\"enum\">\n"
+                            "<_item value=\"normal\">Normal</_item>\n"
+                            "<_item value=\"multiply\">Multiply</_item>\n"
+                            "<_item value=\"screen\">Screen</_item>\n"
+                            "<_item value=\"lighten\">Lighten</_item>\n"
+                            "<_item value=\"darken\">Darken</_item>\n"
+                        "</param>\n"
+                    "</page>\n"
+                "</param>\n"
+                               "<effect>\n"
+                                       "<object-type>all</object-type>\n"
+                                       "<effects-menu>\n"
+                                               "<submenu name=\"" N_("Filters") "\">\n"
+                                               "<submenu name=\"" N_("Experimental") "\"/>\n"
+                             "</submenu>\n"
+                                       "</effects-menu>\n"
+                                       "<menu-tip>" N_("Chromo effect with customizable edge drawing and graininess") "</menu-tip>\n"
+                               "</effect>\n"
+                       "</inkscape-extension>\n", new Chromolitho());
+       };
+};
+
+gchar const *
+Chromolitho::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+       if (_filter != NULL) g_free((void *)_filter);
+    
+    std::ostringstream b1in;
+    std::ostringstream b2in;
+    std::ostringstream col3in;
+    std::ostringstream transf;
+    std::ostringstream light;
+    std::ostringstream saturation;
+    std::ostringstream noise;
+    std::ostringstream dblend;
+    std::ostringstream smooth;
+    std::ostringstream grain;
+    std::ostringstream grainxf;
+    std::ostringstream grainyf;
+    std::ostringstream grainc;
+    std::ostringstream grainv;
+    std::ostringstream gblend;
+    std::ostringstream grainexp;
+    std::ostringstream grainero;
+    std::ostringstream graincol;
+
+    if (ext->get_param_bool("drawing"))
+        b1in << "convolve1";
+    else
+        b1in << "composite1";
+
+    if (ext->get_param_bool("transparent"))
+        col3in << "colormatrix4";
+    else
+        col3in << "component1";
+    light << ext->get_param_float("light");
+    saturation << ext->get_param_float("saturation");
+    noise << (-1000 - ext->get_param_int("noise"));
+    dblend << ext->get_param_enum("dblend");
+    smooth << ext->get_param_float("smooth");
+
+    if (ext->get_param_bool("dented")) {
+        transf << "0 1 0 1";
+    } else {
+        transf << "0 1 1";
+    }
+    if (ext->get_param_bool("inverted"))
+        transf << " 0";
+
+    if (ext->get_param_bool("grain"))
+        b2in << "colormatrix2";
+    else
+        b2in << "blur1";
+    grainxf << (ext->get_param_float("grainxf") / 100);
+    grainyf << (ext->get_param_float("grainyf") / 100);
+    grainc << ext->get_param_int("grainc");
+    grainv << ext->get_param_int("grainv");
+    gblend << ext->get_param_enum("gblend");
+    grainexp << ext->get_param_float("grainexp");
+    grainero << (-ext->get_param_float("grainero"));
+    if (ext->get_param_bool("graincol"))
+        graincol << "1";
+    else
+        graincol << "0";
+
+       _filter = g_strdup_printf(
+               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Chromolitho, custom\">\n"
+        "<feComposite stdDeviation=\"1\" in=\"SourceGraphic\" in2=\"SourceGraphic\" operator=\"arithmetic\" k1=\"%s\" k2=\"1\" result=\"composite1\" />\n"
+        "<feConvolveMatrix in=\"composite1\" kernelMatrix=\"0 250 0 250 %s 250 0 250 0 \" order=\"3 3\" stdDeviation=\"1\" result=\"convolve1\" />\n"
+        "<feBlend in=\"%s\" in2=\"composite1\" mode=\"%s\" blend=\"normal\" stdDeviation=\"1\" result=\"blend1\" />\n"
+        "<feGaussianBlur in=\"blend1\" stdDeviation=\"%s\" result=\"blur1\" />\n"
+        "<feTurbulence baseFrequency=\"%s %s\" numOctaves=\"%s\" seed=\"%s\" type=\"fractalNoise\" result=\"turbulence1\" />\n"
+        "<feColorMatrix values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %s %s \" result=\"colormatrix1\" />\n"
+        "<feColorMatrix type=\"saturate\" stdDeviation=\"3\" values=\"%s\" result=\"colormatrix2\" />\n"
+        "<feBlend in=\"%s\" in2=\"blur1\" stdDeviation=\"1\" blend=\"normal\" mode=\"%s\" result=\"blend2\" />\n"
+        "<feColorMatrix in=\"blend2\" type=\"saturate\" values=\"%s\" result=\"colormatrix3\" />\n"
+        "<feComponentTransfer in=\"colormatrix3\" stdDeviation=\"2\" result=\"component1\">\n"
+            "<feFuncR type=\"discrete\" tableValues=\"%s\" />\n"
+            "<feFuncG type=\"discrete\" tableValues=\"%s\" />\n"
+            "<feFuncB type=\"discrete\" tableValues=\"%s\" />\n"
+        "</feComponentTransfer>\n"
+        "<feColorMatrix values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 -0.2125 -0.7154 -0.0721 1 0 \" result=\"colormatrix4\" />\n"
+        "<feColorMatrix in=\"%s\" values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 15 0 \" result=\"colormatrix5\" />\n"
+        "<feComposite in2=\"SourceGraphic\" operator=\"in\" result=\"composite2\" />\n"
+        "</filter>\n", light.str().c_str(), noise.str().c_str(), b1in.str().c_str(), dblend.str().c_str(), smooth.str().c_str(), grainxf.str().c_str(), grainyf.str().c_str(), grainc.str().c_str(), grainv.str().c_str(), grainexp.str().c_str(), grainero.str().c_str(), graincol.str().c_str(), b2in.str().c_str(), gblend.str().c_str(), saturation.str().c_str(), transf.str().c_str(), transf.str().c_str(), transf.str().c_str(), col3in.str().c_str());
+
+       return _filter;
+}; /* Chromolitho filter */
+
+/**
+    \brief    Custom predefined Drawing filter.
+    
+    Convert images to duochrome drawings.
+
+    Filter's parameters:
+    * Simplification (0.01->20, default 0.6) -> blur1 (stdDeviation)
+    * Lightness (1->500, default 10) -> convolve1 (kernelMatrix, central value -1001->-1500, default -1010)
+    * Fading (0.->6., default 0) -> composite1 (k4)
+    * Smoothness (0.01->20, default 0.6) -> blur2 (stdDeviation)
+    * Dilatation (1->50, default 6) -> color2 (n-1th value)
+    * Erosion (0->50, default 3) -> color2 (nth value 0->-50)
+    * Transluscent (boolean, default false) -> composite 8 (in, true->merge1, false->composite7)
+    * Offset (-100->100, default 0) -> offset (val)
+
+    * Blur (0.01->20., default 1.) -> blur3 (stdDeviation)
+    * Blur spread (1->50, default 6) -> color4 (n-1th value)
+    * Blur erosion (0->50, default 3) -> color4 (nth value 0->-50)
+
+    * Stroke color (guint, default 64,64,64,255) -> flood2 (flood-color), composite3 (k2)
+    * Image on stroke (boolean, default false) -> composite2 (in="flood2" true-> in="SourceGraphic")
+    * Fill color (guint, default 200,200,200,255) -> flood3 (flood-opacity), composite5 (k2)
+    * Image on fill (boolean, default false) -> composite4 (in="flood3" true-> in="SourceGraphic")
+
+*/
+
+class Drawing : public Inkscape::Extension::Internal::Filter::Filter {
+protected:
+       virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
+
+public:
+       Drawing ( ) : Filter() { };
+       virtual ~Drawing ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
+
+       static void init (void) {
+               Inkscape::Extension::build_from_mem(
+                       "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
+                               "<name>" N_("Drawing, custom") "</name>\n"
+                               "<id>org.inkscape.effect.filter.Drawing</id>\n"
+                   "<param name=\"tab\" type=\"notebook\">\n"
+                    "<page name=\"optionstab\" _gui-text=\"Options\">\n"
+                        "<param name=\"simply\" gui-text=\"" N_("Simplification:") "\" type=\"float\" min=\"0.01\" max=\"20\">0.6</param>\n"
+                        "<param name=\"light\" gui-text=\"" N_("Lightness:") "\" type=\"int\" min=\"0\" max=\"500\">10</param>\n"
+                        "<param name=\"fade\" gui-text=\"" N_("Fading:") "\" type=\"float\" min=\"0\" max=\"60\">0</param>\n"
+                        "<param name=\"smooth\" gui-text=\"" N_("Smoothness:") "\" type=\"float\" min=\"0.01\" max=\"20\">0.6</param>\n"
+                        "<param name=\"dilat\" gui-text=\"" N_("Dilatation:") "\" type=\"float\" min=\"1\" max=\"50\">6</param>\n"
+                        "<param name=\"erosion\" gui-text=\"" N_("Erosion:") "\" type=\"float\" min=\"0\" max=\"50\">3</param>\n"
+                        "<param name=\"transluscent\" gui-text=\"" N_("Transluscent") "\" type=\"boolean\" >false</param>\n"
+                        "<_param name=\"blurheader\" type=\"groupheader\">Blur</_param>\n"
+                            "<param name=\"blur\" gui-text=\"" N_("Level:") "\" type=\"float\" min=\"0.01\" max=\"20\">1</param>\n"
+                            "<param name=\"bdilat\" gui-text=\"" N_("Dilatation:") "\" type=\"float\" min=\"1\" max=\"50\">6</param>\n"
+                            "<param name=\"berosion\" gui-text=\"" N_("Erosion:") "\" type=\"float\" min=\"0\" max=\"50\">3</param>\n"
+                    "</page>\n"
+                    "<page name=\"co11tab\" _gui-text=\"Fill color\">\n"
+                        "<param name=\"fcolor\" gui-text=\"" N_("Fill color") "\" type=\"color\">-1515870721</param>\n"
+                        "<param name=\"iof\" gui-text=\"" N_("Image on fill") "\" type=\"boolean\" >false</param>\n"
+                    "</page>\n"
+                    "<page name=\"co12tab\" _gui-text=\"Stroke color\">\n"
+                        "<param name=\"scolor\" gui-text=\"" N_("Stroke color") "\" type=\"color\">589505535</param>\n"
+                        "<param name=\"ios\" gui-text=\"" N_("Image on stroke") "\" type=\"boolean\" >false</param>\n"
+                        "<param name=\"offset\" gui-text=\"" N_("Offset:") "\" type=\"int\" min=\"-100\" max=\"100\">0</param>\n"
+                    "</page>\n"
+                "</param>\n"
+                               "<effect>\n"
+                                       "<object-type>all</object-type>\n"
+                                       "<effects-menu>\n"
+                                               "<submenu name=\"" N_("Filters") "\">\n"
+                                               "<submenu name=\"" N_("Experimental") "\"/>\n"
+                             "</submenu>\n"
+                                       "</effects-menu>\n"
+                                       "<menu-tip>" N_("Convert images to duochrome drawings") "</menu-tip>\n"
+                               "</effect>\n"
+                       "</inkscape-extension>\n", new Drawing());
+       };
+};
+
+gchar const *
+Drawing::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+       if (_filter != NULL) g_free((void *)_filter);
+
+    std::ostringstream simply;
+    std::ostringstream light;
+    std::ostringstream fade;
+    std::ostringstream smooth;
+    std::ostringstream dilat;
+    std::ostringstream erosion;
+    std::ostringstream transluscent;
+    std::ostringstream offset;
+    std::ostringstream blur;
+    std::ostringstream bdilat;
+    std::ostringstream berosion;
+    std::ostringstream strokea;
+    std::ostringstream stroker;
+    std::ostringstream strokeg;
+    std::ostringstream strokeb;
+    std::ostringstream ios;
+    std::ostringstream filla;
+    std::ostringstream fillr;
+    std::ostringstream fillg;
+    std::ostringstream fillb;
+    std::ostringstream iof;
+
+    simply << ext->get_param_float("simply");
+    light << (-1000 - ext->get_param_int("light"));
+    fade << (ext->get_param_float("fade") / 10);
+    smooth << ext->get_param_float("smooth");
+    dilat << ext->get_param_float("dilat");
+    erosion << (- ext->get_param_float("erosion"));
+    if (ext->get_param_bool("transluscent"))
+        transluscent << "merge1";
+    else
+        transluscent << "composite7";
+    offset << ext->get_param_int("offset");
+    
+    blur << ext->get_param_float("blur");
+    bdilat << ext->get_param_float("bdilat");
+    berosion << (- ext->get_param_float("berosion"));
+
+    guint32 fcolor = ext->get_param_color("fcolor");
+    fillr << ((fcolor >> 24) & 0xff);
+    fillg << ((fcolor >> 16) & 0xff);
+    fillb << ((fcolor >>  8) & 0xff);
+    filla << (fcolor & 0xff) / 255.0F;
+    if (ext->get_param_bool("iof"))
+        iof << "SourceGraphic";
+    else
+        iof << "flood3";
+
+    guint32 scolor = ext->get_param_color("scolor");
+    stroker << ((scolor >> 24) & 0xff);
+    strokeg << ((scolor >> 16) & 0xff);
+    strokeb << ((scolor >>  8) & 0xff);
+    strokea << (scolor & 0xff) / 255.0F;
+    if (ext->get_param_bool("ios"))
+        ios << "SourceGraphic";
+    else
+        ios << "flood2";
+    
+       _filter = g_strdup_printf(
+               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Drawing, custom\">\n"
+        "<feGaussianBlur in=\"SourceGraphic\" stdDeviation=\"%s\" result=\"blur1\" />\n"
+        "<feConvolveMatrix in=\"blur1\" targetX=\"1\" targetY=\"1\" order=\"3 3\" kernelMatrix=\"0 250 0 250 %s 250 0 250 0 \" result=\"convolve1\" />\n"
+        "<feComposite in=\"convolve1\" in2=\"convolve1\" k1=\"1\" k2=\"1\" k4=\"%s\" operator=\"arithmetic\" stdDeviation=\"1\" result=\"composite1\" />\n"
+        "<feColorMatrix in=\"composite1\" values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.2125 -0.7154 -0.0721 1 0 \" result=\"color1\" />\n"
+        "<feGaussianBlur stdDeviation=\"%s\" result=\"blur2\" />\n"
+        "<feColorMatrix values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %s %s \" result=\"color2\" />\n"
+        "<feFlood flood-color=\"rgb(255,255,255)\" result=\"flood1\" />\n"
+        "<feBlend in2=\"color2\" mode=\"multiply\" blend=\"normal\" result=\"blend1\" />\n"
+        "<feComponentTransfer in=\"blend1\" stdDeviation=\"2\" result=\"component1\">\n"
+          "<feFuncR type=\"discrete\" tableValues=\"0 1 1 1\" />\n"
+          "<feFuncG type=\"discrete\" tableValues=\"0 1 1 1\" />\n"
+          "<feFuncB type=\"discrete\" tableValues=\"0 1 1 1\" />\n"
+        "</feComponentTransfer>\n"
+        "<feGaussianBlur stdDeviation=\"%s\" result=\"blur3\" />\n"
+        "<feColorMatrix in=\"blur3\" values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0.2125 -0.7154 -0.0721 1 0 \" stdDeviation=\"1\" result=\"color3\" />\n"
+        "<feColorMatrix values=\"1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 %s %s \" result=\"color4\" />\n"
+        "<feFlood flood-color=\"rgb(%s,%s,%s)\" result=\"flood2\" />\n"
+        "<feComposite in=\"%s\" in2=\"color4\" operator=\"in\" result=\"composite2\" />\n"
+        "<feComposite in=\"composite2\" in2=\"composite2\" operator=\"arithmetic\" k2=\"%s\" result=\"composite3\" />\n"
+        "<feOffset dx=\"%s\" dy=\"%s\" result=\"offset1\" />\n"
+        "<feFlood in=\"color4\" flood-color=\"rgb(%s,%s,%s)\" result=\"flood3\" />\n"
+        "<feComposite in=\"%s\" in2=\"color4\" operator=\"out\" result=\"composite4\" />\n"
+        "<feComposite in=\"composite4\" in2=\"composite4\" operator=\"arithmetic\" k2=\"%s\" result=\"composite5\" />\n"
+        "<feMerge result=\"merge1\">\n"
+          "<feMergeNode in=\"composite5\" />\n"
+          "<feMergeNode in=\"offset1\" />\n"
+        "</feMerge>\n"
+        "<feComposite in=\"merge1\" in2=\"merge1\" operator=\"over\" result=\"composite6\" />\n"
+        "<feComposite in=\"composite6\" in2=\"composite6\" operator=\"over\" result=\"composite7\" />\n"
+        "<feComposite in=\"%s\" in2=\"SourceGraphic\" operator=\"in\" result=\"composite8\" />\n"
+        "</filter>\n", simply.str().c_str(), light.str().c_str(), fade.str().c_str(), smooth.str().c_str(), dilat.str().c_str(), erosion.str().c_str(),  blur.str().c_str(), bdilat.str().c_str(), berosion.str().c_str(), stroker.str().c_str(), strokeg.str().c_str(), strokeb.str().c_str(), ios.str().c_str(), strokea.str().c_str(), offset.str().c_str(), offset.str().c_str(), fillr.str().c_str(), fillg.str().c_str(), fillb.str().c_str(), iof.str().c_str(), filla.str().c_str(), transluscent.str().c_str());
+
+       return _filter;
+}; /* Drawing filter */
+
+/**
+    \brief    Custom predefined Posterize filter.
+    
+    Poster and painting effects.
+
+    Filter's parameters (not finished yet):
+    * Effect type (enum, default "Normal") ->
+        Normal = feComponentTransfer
+        Dented = Normal + intermediate values
+    * Blur (0.01->10., default 5.) -> blur3 (stdDeviation)
+
+*/
 class Posterize : public Inkscape::Extension::Internal::Filter::Filter {
 protected:
        virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
@@ -33,7 +401,7 @@ public:
        static void init (void) {
                Inkscape::Extension::build_from_mem(
                        "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
-                               "<name>" N_("Poster and painting, custom -EXP-") "</name>\n"
+                               "<name>" N_("Poster and painting, custom") "</name>\n"
                                "<id>org.inkscape.effect.filter.Posterize</id>\n"
                 "<param name=\"type\" gui-text=\"" N_("Effect type:") "\" type=\"enum\">\n"
                     "<_item value=\"normal\">Normal</_item>\n"
@@ -49,8 +417,8 @@ public:
                     "<_item value=\"normal\">Normal</_item>\n"
                     "<_item value=\"darken\">Darken</_item>\n"
                 "</param>\n"
-                "<param name=\"blur1\" gui-text=\"" N_("Primary blur:") "\" type=\"float\" min=\"0.0\" max=\"100.0\">4.0</param>\n"
-                "<param name=\"blur2\" gui-text=\"" N_("Secondary blur:") "\" type=\"float\" min=\"0.0\" max=\"100.0\">0.5</param>\n"
+                "<param name=\"blur1\" gui-text=\"" N_("Primary blur:") "\" type=\"float\" min=\"0.01\" max=\"100.0\">4.0</param>\n"
+                "<param name=\"blur2\" gui-text=\"" N_("Secondary blur:") "\" type=\"float\" min=\"0.01\" max=\"100.0\">0.5</param>\n"
                 "<param name=\"presaturation\" gui-text=\"" N_("Pre-saturation:") "\" type=\"float\" min=\"0.00\" max=\"1.00\">1.00</param>\n"
                 "<param name=\"postsaturation\" gui-text=\"" N_("Post-saturation:") "\" type=\"float\" min=\"0.00\" max=\"1.00\">1.00</param>\n"
                 "<param name=\"antialiasing\" gui-text=\"" N_("Simulate antialiasing") "\" type=\"boolean\">false</param>\n"
@@ -65,7 +433,6 @@ public:
                                "</effect>\n"
                        "</inkscape-extension>\n", new Posterize());
        };
-
 };
 
 gchar const *
@@ -84,13 +451,12 @@ Posterize::get_filter_text (Inkscape::Extension::Extension * ext)
     
     table << ext->get_param_enum("table");
     blendmode << ext->get_param_enum("blend");
-    blur1 << ext->get_param_float("blur1") + 0.01;
-    blur2 << ext->get_param_float("blur2") + 0.01;
+    blur1 << ext->get_param_float("blur1");
+    blur2 << ext->get_param_float("blur2");
     presat << ext->get_param_float("presaturation");
     postsat << ext->get_param_float("postsaturation");
 
-
-    // TransfertComponenet table values are calculated based on the poster type.
+    // TransfertComponent table values are calculated based on the poster type.
     transf << "0";
     int levels = ext->get_param_int("levels") + 1;
     const gchar *effecttype =  ext->get_param_enum("type");
@@ -108,10 +474,9 @@ Posterize::get_filter_text (Inkscape::Extension::Extension * ext)
         antialias << "0.5";
     else
         antialias << "0.01";
-
     
        _filter = g_strdup_printf(
-               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Poster and painting, custom -EXP-\">\n"
+               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Poster and painting, custom\">\n"
             "<feComposite result=\"Composite1\" operator=\"arithmetic\" k2=\"1\" />\n"
             "<feGaussianBlur stdDeviation=\"%s\" result=\"Gaussian1\" />\n"
             "<feGaussianBlur stdDeviation=\"%s\" in=\"Composite1\" />\n"
@@ -128,22 +493,32 @@ Posterize::get_filter_text (Inkscape::Extension::Extension * ext)
         "</filter>\n", blur1.str().c_str(), blur2.str().c_str(), blendmode.str().c_str(), presat.str().c_str(), table.str().c_str(), transf.str().c_str(), table.str().c_str(), transf.str().c_str(), table.str().c_str(), transf.str().c_str(), postsat.str().c_str(), antialias.str().c_str());
 
        return _filter;
-};
+}; /* Posterize filter */
+
+/**
+    \brief    Custom predefined PosterizeBasic filter.
+    
+    Simple posterizing effect
 
-class TestFilter : public Inkscape::Extension::Internal::Filter::Filter {
+    Filter's parameters:
+    * Levels (1->20, default 5) -> component1 (tableValues)
+    * Blur (0.01->20., default 4.) -> blur1 (stdDeviation)
+*/
+class PosterizeBasic : public Inkscape::Extension::Internal::Filter::Filter {
 protected:
        virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
 
 public:
-       TestFilter ( ) : Filter() { };
-       virtual ~TestFilter ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
+       PosterizeBasic ( ) : Filter() { };
+       virtual ~PosterizeBasic ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
 
        static void init (void) {
                Inkscape::Extension::build_from_mem(
                        "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
-                               "<name>" N_("Test Filter -EXP-") "</name>\n"
-                               "<id>org.inkscape.effect.filter.TestFilter</id>\n"
-                "<_param name=\"header1\" type=\"groupheader\">Test filter</_param>\n"
+                               "<name>" N_("Posterize basic, custom") "</name>\n"
+                               "<id>org.inkscape.effect.filter.PosterizeBasic</id>\n"
+                "<param name=\"levels\" gui-text=\"" N_("Levels:") "\" type=\"int\" min=\"1\" max=\"20\">5</param>\n"
+                "<param name=\"blur\" gui-text=\"" N_("Blur:") "\" type=\"float\" min=\"0.01\" max=\"20.0\">4.0</param>\n"
                                "<effect>\n"
                                        "<object-type>all</object-type>\n"
                                        "<effects-menu>\n"
@@ -151,37 +526,45 @@ public:
                                                "<submenu name=\"" N_("Experimental") "\"/>\n"
                              "</submenu>\n"
                                        "</effects-menu>\n"
-                                       "<menu-tip>" N_("Change colors to a two colors palette") "</menu-tip>\n"
+                                       "<menu-tip>" N_("Simple posterizing effect") "</menu-tip>\n"
                                "</effect>\n"
-                       "</inkscape-extension>\n", new TestFilter());
+                       "</inkscape-extension>\n", new PosterizeBasic());
        };
-
 };
 
 gchar const *
-TestFilter::get_filter_text (Inkscape::Extension::Extension * ext)
+PosterizeBasic::get_filter_text (Inkscape::Extension::Extension * ext)
 {
        if (_filter != NULL) g_free((void *)_filter);
+
+    std::ostringstream blur;
+    std::ostringstream transf;
     
+    blur << ext->get_param_float("blur");
+
+    transf << "0";
+    int levels = ext->get_param_int("levels") + 1;
+    float val = 0.0;
+    for ( int step = 1 ; step <= levels ; step++ ) {
+        val = (float) step / levels;
+        transf << " " << val;
+    }
+    transf << " 1";
+
        _filter = g_strdup_printf(
-               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Test Filter -EXP-\">\n"
-            "<feComposite result=\"Composite1\" operator=\"arithmetic\" k2=\"1\" />\n"
-            "<feGaussianBlur stdDeviation=\"4\" result=\"Gaussian1\" />\n"
-            "<feGaussianBlur stdDeviation=\"0.5\" in=\"Composite1\" />\n"
-            "<feBlend in2=\"Gaussian1\" mode=\"normal\" />\n"
-            "<feColorMatrix type=\"saturate\" values=\"1\" />\n"
-            "<feComponentTransfer>\n"
-                "<feFuncR type=\"discrete\" tableValues=\"0 0.25 0.5 0.75 1 1\" />\n"
-                "<feFuncG type=\"discrete\" tableValues=\"0 0.25 0.5 0.75 1 1\" />\n"
-                "<feFuncB type=\"discrete\" tableValues=\"0 0.25 0.5 0.75 1 1\" />\n"
+               "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" color-interpolation-filters=\"sRGB\" height=\"1\" width=\"1\" y=\"0\" x=\"0\" inkscape:label=\"Posterize basic, custom\">\n"
+            "<feGaussianBlur stdDeviation=\"%s\" result=\"blur1\" />\n"
+            "<feComponentTransfer stdDeviation=\"2\" in=\"blur1\" result=\"component1\">\n"
+                "<feFuncR type=\"discrete\" tableValues=\"%s\" />\n"
+                "<feFuncG type=\"discrete\" tableValues=\"%s\" />\n"
+                "<feFuncB type=\"discrete\" tableValues=\"%s\" />\n"
             "</feComponentTransfer>\n"
-            "<feColorMatrix type=\"saturate\" values=\"1\" />\n"
-            "<feGaussianBlur stdDeviation=\"0.05\" />\n"
-            "<feComposite in2=\"SourceGraphic\" operator=\"atop\" />\n"
-        "</filter>\n");
+            "<feComposite in=\"component1\" in2=\"SourceGraphic\" operator=\"in\" />\n"
+        "</filter>\n", blur.str().c_str(), transf.str().c_str(), transf.str().c_str(), transf.str().c_str());
 
        return _filter;
-};
+}; /* PosterizeBasic filter */
+
 }; /* namespace Filter */
 }; /* namespace Internal */
 }; /* namespace Extension */