1 #ifndef __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__
2 #define __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__
3 /* Change the 'SNOW' above to be your file name */
5 /*
6 * Copyright (C) 2008 Authors:
7 * Ted Gould <ted@gould.cx>
8 *
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
11 /* ^^^ Change the copyright to be you and your e-mail address ^^^ */
13 #include "filter.h"
15 namespace Inkscape {
16 namespace Extension {
17 namespace Internal {
18 namespace Filter {
20 class Snow : public Inkscape::Extension::Internal::Filter::Filter {
21 protected:
22 virtual gchar const * get_filter_text (Inkscape::Extension::Extension * ext);
24 public:
25 Snow ( ) : Filter() { };
26 virtual ~Snow ( ) { if (_filter != NULL) g_free((void *)_filter); return; }
28 public:
29 static void init (void) {
30 Inkscape::Extension::build_from_mem(
31 "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
32 "<name>" N_("Snow crest") "</name>\n"
33 "<id>org.inkscape.effect.filter.snow</id>\n"
34 "<param name=\"drift\" gui-text=\"" N_("Drift Size") "\" type=\"float\" min=\"0.0\" max=\"20.0\">3.5</param>\n"
35 "<effect>\n"
36 "<object-type>all</object-type>\n"
37 "<effects-menu>\n"
38 "<submenu name=\"" N_("Filters") "\">\n"
39 "<submenu name=\"Protrusions\"/>\n"
40 "</submenu>\n"
41 "</effects-menu>\n"
42 "<menu-tip>" N_("Snow has fallen on object") "</menu-tip>\n"
43 "</effect>\n"
44 "</inkscape-extension>\n", new Snow());
45 };
47 };
49 gchar const *
50 Snow::get_filter_text (Inkscape::Extension::Extension * ext)
51 {
52 if (_filter != NULL) g_free((void *)_filter);
54 float drift = ext->get_param_float("drift");
56 _filter = g_strdup_printf(
57 "<filter xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:label=\"Snow\">\n"
58 "<feConvolveMatrix order=\"3 3\" kernelMatrix=\"1 1 1 0 0 0 -1 -1 -1\" preserveAlpha=\"false\" divisor=\"3\"/>\n"
59 "<feMorphology operator=\"dilate\" radius=\"1 %f\"/>\n"
60 "<feGaussianBlur stdDeviation=\"1.6270889487870621\" result=\"result0\"/>\n"
61 "<feColorMatrix values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0\" result=\"result1\"/>\n"
62 "<feOffset dx=\"0\" dy=\"1\" result=\"result5\"/>\n"
63 "<feDiffuseLighting in=\"result0\" diffuseConstant=\"2.2613065326633168\" surfaceScale=\"1\">\n"
64 "<feDistantLight azimuth=\"225\" elevation=\"32\"/>\n"
65 "</feDiffuseLighting>\n"
66 "<feComposite in2=\"result1\" operator=\"in\" result=\"result2\"/>\n"
67 "<feColorMatrix values=\"0.4 0 0 0 0.6 0 0.4 0 0 0.6 0 0 0 0 1 0 0 0 1 0\" result=\"result4\"/>\n"
68 "<feComposite in2=\"result5\" in=\"result4\"/>\n"
69 "<feComposite in2=\"SourceGraphic\"/>\n"
70 "</filter>\n", drift);
72 return _filter;
73 };
75 }; /* namespace Filter */
76 }; /* namespace Internal */
77 }; /* namespace Extension */
78 }; /* namespace Inkscape */
80 /* Change the 'SNOW' below to be your file name */
81 #endif /* __INKSCAPE_EXTENSION_INTERNAL_FILTER_SNOW_H__ */