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| author | Johan B. C. Engelen <jbc.engelen@swissonline.ch> | 2008-05-08 18:52:45 +0000 |
|---|---|---|
| committer | johanengelen <johanengelen@users.sourceforge.net> | 2008-05-08 18:52:45 +0000 |
| commit | a26ea800c61fdc4f8d4d8a8b5e882a29e0e2e5c4 (patch) | |
| tree | 3c2d3d39758c4dcdda06c7b596311e1dcfc950e3 /src/live_effects/lpe-constructgrid.cpp | |
| parent | set continue on error to true (diff) | |
| download | inkscape-a26ea800c61fdc4f8d4d8a8b5e882a29e0e2e5c4.tar.gz inkscape-a26ea800c61fdc4f8d4d8a8b5e882a29e0e2e5c4.zip | |
add LPEConstructGrid
(bzr r5633)
Diffstat (limited to 'src/live_effects/lpe-constructgrid.cpp')
| -rw-r--r-- | src/live_effects/lpe-constructgrid.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/live_effects/lpe-constructgrid.cpp b/src/live_effects/lpe-constructgrid.cpp new file mode 100644 index 000000000..1273e8b7c --- /dev/null +++ b/src/live_effects/lpe-constructgrid.cpp @@ -0,0 +1,103 @@ +#define INKSCAPE_LPE_CONSTRUCTGRID_CPP
+/** \file
+ * LPE Construct Grid implementation
+ */
+/*
+ * Authors:
+ * Johan Engelen
+*
+* Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "live_effects/lpe-constructgrid.h"
+
+#include <2geom/path.h>
+#include <2geom/transforms.h>
+
+#include "nodepath.h"
+
+namespace Inkscape {
+namespace LivePathEffect {
+
+using namespace Geom;
+
+LPEConstructGrid::LPEConstructGrid(LivePathEffectObject *lpeobject) :
+ Effect(lpeobject),
+ nr_x(_("Size X"), _("The size of the grid in X direction."), "nr_x", &wr, this, 5),
+ nr_y(_("Size Y"), _("The size of the grid in Y direction."), "nr_y", &wr, this, 5)
+{
+ registerParameter( dynamic_cast<Parameter *>(&nr_x) );
+ registerParameter( dynamic_cast<Parameter *>(&nr_y) );
+
+ nr_x.param_make_integer();
+ nr_y.param_make_integer();
+ nr_x.param_set_range(1, NR_HUGE);
+ nr_y.param_set_range(1, NR_HUGE);
+}
+
+LPEConstructGrid::~LPEConstructGrid()
+{
+
+}
+
+std::vector<Geom::Path>
+LPEConstructGrid::doEffect_path (std::vector<Geom::Path> const & path_in)
+{
+ // Check that the path has at least 3 nodes (i.e. 2 segments), more nodes are ignored
+ if (path_in[0].size() >= 2) {
+ // read the first 3 nodes:
+ Geom::Path::const_iterator it ( path_in[0].begin() );
+ Geom::Point first_p = (*it++).initialPoint();
+ Geom::Point origin = (*it++).initialPoint();
+ Geom::Point second_p = (*it++).initialPoint();
+ // make first_p and second_p be the construction *vectors* of the grid:
+ first_p -= origin;
+ second_p -= origin;
+ Geom::Translate first_translation( first_p );
+ Geom::Translate second_translation( second_p );
+
+ // create the gridpaths of the two directions
+ Geom::Path first_path( origin );
+ first_path.appendNew<LineSegment>( origin + first_p*nr_y );
+ Geom::Path second_path( origin );
+ second_path.appendNew<LineSegment>( origin + second_p*nr_x );
+
+ // use the gridpaths and set them in the correct grid
+ std::vector<Geom::Path> path_out;
+ path_out.push_back(first_path);
+ for (int ix = 0; ix < nr_x; ix++) {
+ path_out.push_back(path_out.back() * second_translation );
+ }
+ path_out.push_back(second_path);
+ for (int iy = 0; iy < nr_y; iy++) {
+ path_out.push_back(path_out.back() * first_translation );
+ }
+
+ return path_out;
+ } else {
+ return path_in;
+ }
+}
+
+void
+LPEConstructGrid::setup_nodepath(Inkscape::NodePath::Path *np)
+{
+ Effect::setup_nodepath(np);
+ sp_nodepath_make_straight_path(np);
+}
+
+} //namespace LivePathEffect
+} /* namespace Inkscape */
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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