From 79af2e1423d604b987e323c3a87ea755dfc4257c Mon Sep 17 00:00:00 2001
From: JazzyNico <nicoduf@yahoo.fr>
Date: Fri, 17 Sep 2010 15:02:18 +0200
Subject: [PATCH] Filters. Some experimental filters improvements.

---
 src/extension/internal/filter/color.h        |  26 ++--
 src/extension/internal/filter/experimental.h | 137 +++++++++++++++----
 2 files changed, 132 insertions(+), 31 deletions(-)

diff --git a/src/extension/internal/filter/color.h b/src/extension/internal/filter/color.h
index 08ba4b475..82a37a6aa 100644
--- a/src/extension/internal/filter/color.h
+++ b/src/extension/internal/filter/color.h
@@ -39,6 +39,7 @@ public:
 //	            "<param name=\"tab\" type=\"notebook\">\n"
 //                    "<page name=\"Color1\" _gui-text=\"Color 1\">\n"
                         "<param name=\"fluo\" gui-text=\"" N_("Fluorescence") "\" type=\"boolean\">false</param>\n"
+                        "<param name=\"swapcolors\" gui-text=\"" N_("Swap colors") "\" type=\"boolean\">false</param>\n"
                         "<_param name=\"header1\" type=\"groupheader\">Color 1</_param>\n"
 				        "<param name=\"color1\" gui-text=\"" N_("Color 1") "\" type=\"color\">1364325887</param>\n"
 //                    "</page>\n"
@@ -75,10 +76,13 @@ Duochrome::get_filter_text (Inkscape::Extension::Extension * ext)
     std::ostringstream g2;
     std::ostringstream b2;
     std::ostringstream fluo;
+    std::ostringstream swapc;
 
     guint32 color1 = ext->get_param_color("color1");
     guint32 color2 = ext->get_param_color("color2");
     bool fluorescence = ext->get_param_bool("fluo");
+    bool swapcolors = ext->get_param_bool("swapcolors");
+
     a1 << (color1 & 0xff) / 255.0F;
     r1 << ((color1 >> 24) & 0xff);
     g1 << ((color1 >> 16) & 0xff);
@@ -87,24 +91,30 @@ Duochrome::get_filter_text (Inkscape::Extension::Extension * ext)
     r2 << ((color2 >> 24) & 0xff);
     g2 << ((color2 >> 16) & 0xff);
     b2 << ((color2 >>  8) & 0xff);
-    if (fluorescence) fluo << "";
-    else  fluo << " in=\"result6\"";
+    if (fluorescence)
+        fluo << "";
+    else
+        fluo << " in=\"blend\"";
+    if (swapcolors)
+        swapc << "in";
+    else
+        swapc << "out";
 
 	_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=\"Duochrome, custom -EXP-\">\n"
             "<feColorMatrix type=\"luminanceToAlpha\" result=\"fbSourceGraphic\" />\n"
-            "<feFlood in=\"fbSourceGraphic\" flood-opacity=\"%s\" flood-color=\"rgb(%s,%s,%s)\" result=\"result1\" />\n"
-            "<feComposite in=\"result1\" in2=\"fbSourceGraphic\" operator=\"out\" result=\"result2\" />\n"
+            "<feFlood in=\"fbSourceGraphic\" flood-opacity=\"%s\" flood-color=\"rgb(%s,%s,%s)\" result=\"composite1\" />\n"
+            "<feComposite in=\"composite1\" in2=\"fbSourceGraphic\" operator=\"%s\" result=\"result2\" />\n"
             "<feComposite in2=\"SourceGraphic\" k2=\"1\" result=\"fbSourceGraphic\" operator=\"arithmetic\" />\n"
             "<feFlood in=\"fbSourceGraphic\" flood-opacity=\"%s\" flood-color=\"rgb(%s,%s,%s)\" result=\"result2\" />\n"
-            "<feMerge result=\"result5\">\n"
+            "<feMerge>\n"
                 "<feMergeNode in=\"result2\" />\n"
                 "<feMergeNode in=\"fbSourceGraphic\" />\n"
             "</feMerge>\n"
-            "<feBlend in2=\"fbSourceGraphic\" mode=\"normal\" blend=\"normal\" result=\"result6\" />\n"
-            "<feColorMatrix type=\"matrix\" values=\"2 -1 0 0 0 0 2 -1 0 0 -1 0 2 0 0 0 0 0 1 0 \" result=\"result10\" />\n"
+            "<feBlend in2=\"fbSourceGraphic\" mode=\"normal\" blend=\"normal\" result=\"blend\" />\n"
+            "<feColorMatrix type=\"matrix\" values=\"2 -1 0 0 0 0 2 -1 0 0 -1 0 2 0 0 0 0 0 1 0 \" />\n"
             "<feComposite %s in2=\"SourceGraphic\" operator=\"in\" result=\"fbSourceGraphic\" />\n"
-        "</filter>\n", a1.str().c_str(), r1.str().c_str(), g1.str().c_str(), b1.str().c_str(), a2.str().c_str(), r2.str().c_str(), g2.str().c_str(), b2.str().c_str(), fluo.str().c_str());
+        "</filter>\n", a1.str().c_str(), r1.str().c_str(), g1.str().c_str(), b1.str().c_str(), swapc.str().c_str(), a2.str().c_str(), r2.str().c_str(), g2.str().c_str(), b2.str().c_str(), fluo.str().c_str());
 
 	return _filter;
 };
diff --git a/src/extension/internal/filter/experimental.h b/src/extension/internal/filter/experimental.h
index af5a37b45..15c97202e 100644
--- a/src/extension/internal/filter/experimental.h
+++ b/src/extension/internal/filter/experimental.h
@@ -33,13 +33,27 @@ public:
 	static void init (void) {
 		Inkscape::Extension::build_from_mem(
 			"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
-				"<name>" N_("Posterize, custom -EXP-") "</name>\n"
+				"<name>" N_("Poster and painting, custom -EXP-") "</name>\n"
 				"<id>org.inkscape.effect.filter.Posterize</id>\n"
-                "<param name=\"type\" gui-text=\"" N_("Type:") "\" type=\"enum\">\n"
+                "<param name=\"type\" gui-text=\"" N_("Effect type:") "\" type=\"enum\">\n"
                     "<_item value=\"normal\">Normal</_item>\n"
-                    "<_item value=\"contrasted\">Contrasted</_item>\n"
+                    "<_item value=\"dented\">Dented</_item>\n"
                 "</param>\n"
-                "<param name=\"level\" gui-text=\"" N_("Level:") "\" type=\"int\" min=\"1\" max=\"10\">3</param>\n"
+                "<param name=\"table\" gui-text=\"" N_("Transfer type:") "\" type=\"enum\">\n"
+                    "<_item value=\"discrete\">Poster</_item>\n"
+                    "<_item value=\"table\">Painting</_item>\n"
+                "</param>\n"
+                "<param name=\"levels\" gui-text=\"" N_("Levels:") "\" type=\"int\" min=\"1\" max=\"15\">5</param>\n"
+                "<param name=\"blend\" gui-text=\"" N_("Blend mode:") "\" type=\"enum\">\n"
+                    "<_item value=\"lighten\">Ligthen</_item>\n"
+                    "<_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=\"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"
 				"<effect>\n"
 					"<object-type>all</object-type>\n"
 					"<effects-menu>\n"
@@ -47,7 +61,7 @@ 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_("Poster and painting effects") "</menu-tip>\n"
 				"</effect>\n"
 			"</inkscape-extension>\n", new Posterize());
 	};
@@ -59,35 +73,112 @@ Posterize::get_filter_text (Inkscape::Extension::Extension * ext)
 {
 	if (_filter != NULL) g_free((void *)_filter);
 
+    std::ostringstream table;
+    std::ostringstream blendmode;
+    std::ostringstream blur1;
+    std::ostringstream blur2;
+    std::ostringstream presat;
+    std::ostringstream postsat;
     std::ostringstream transf;
+    std::ostringstream antialias;
+    
+    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;
+    presat << ext->get_param_float("presaturation");
+    postsat << ext->get_param_float("postsaturation");
 
-    int level = ext->get_param_int("level") + 1;
-    const gchar *type = ext->get_param_enum("type");
-    float val = 0.0;
+
+    // TransfertComponenet table values are calculated based on the poster type.
     transf << "0";
-    for ( int step = 1 ; step <= level ; step++ ) {
-        val = (float) step / level;
+    int levels = ext->get_param_int("levels") + 1;
+    const gchar *effecttype =  ext->get_param_enum("type");
+    float val = 0.0;
+    for ( int step = 1 ; step <= levels ; step++ ) {
+        val = (float) step / levels;
         transf << " " << val;
-        if((g_ascii_strcasecmp("contrasted", type) == 0)) {
-            transf << " " << (val - ((float) 1 / (3 * level))) << " " << (val + ((float) 1 / (2 * level)));
+        if((g_ascii_strcasecmp("dented", effecttype) == 0)) {
+            transf << " " << (val - ((float) 1 / (3 * levels))) << " " << (val + ((float) 1 / (2 * levels)));
         }
     }
     transf << " 1";
+    
+    if (ext->get_param_bool("antialiasing"))
+        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"
+            "<feComposite result=\"Composite1\" operator=\"arithmetic\" k2=\"1\" />\n"
+            "<feGaussianBlur stdDeviation=\"%s\" result=\"Gaussian1\" />\n"
+            "<feGaussianBlur stdDeviation=\"%s\" in=\"Composite1\" />\n"
+            "<feBlend in2=\"Gaussian1\" mode=\"%s\" />\n"
+            "<feColorMatrix type=\"saturate\" values=\"%s\" />\n"
+            "<feComponentTransfer>\n"
+                "<feFuncR type=\"%s\" tableValues=\"%s\" />\n"
+                "<feFuncG type=\"%s\" tableValues=\"%s\" />\n"
+                "<feFuncB type=\"%s\" tableValues=\"%s\" />\n"
+            "</feComponentTransfer>\n"
+            "<feColorMatrix type=\"saturate\" values=\"%s\" />\n"
+            "<feGaussianBlur stdDeviation=\"%s\" />\n"
+            "<feComposite in2=\"SourceGraphic\" operator=\"atop\" />\n"
+        "</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;
+};
+
+class TestFilter : 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; }
+
+	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"
+				"<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_("Change colors to a two colors palette") "</menu-tip>\n"
+				"</effect>\n"
+			"</inkscape-extension>\n", new TestFilter());
+	};
+
+};
 
+gchar const *
+TestFilter::get_filter_text (Inkscape::Extension::Extension * ext)
+{
+	if (_filter != NULL) g_free((void *)_filter);
+    
 	_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=\"Posterize, custom -EXP-\">\n"
-            "<feGaussianBlur stdDeviation=\"1.5\" result=\"result3\" />\n"
-            "<feGaussianBlur stdDeviation=\"1.5\" in=\"SourceGraphic\" result=\"result4\" />\n"
-            "<feBlend in2=\"result3\" blend=\"normal\" mode=\"lighten\" />\n"
-            "<feComponentTransfer result=\"result1\">\n"
-                "<feFuncR type=\"discrete\" tableValues=\"%s\" />\n"
-                "<feFuncG type=\"discrete\" tableValues=\"%s\" />\n"
-                "<feFuncB type=\"discrete\" tableValues=\"%s\" />\n"
+		"<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"
             "</feComponentTransfer>\n"
             "<feColorMatrix type=\"saturate\" values=\"1\" />\n"
-            "<feGaussianBlur stdDeviation=\"0.01\" />\n"
-            "<feComposite in2=\"SourceGraphic\" operator=\"atop\" result=\"result2\" />\n"
-        "</filter>\n", transf.str().c_str(), transf.str().c_str(), transf.str().c_str());
+            "<feGaussianBlur stdDeviation=\"0.05\" />\n"
+            "<feComposite in2=\"SourceGraphic\" operator=\"atop\" />\n"
+        "</filter>\n");
 
 	return _filter;
 };
-- 
2.30.2