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| author | Maximilian Albert <maximilian.albert@gmail.com> | 2008-06-02 09:13:23 +0000 |
|---|---|---|
| committer | cilix42 <cilix42@users.sourceforge.net> | 2008-06-02 09:13:23 +0000 |
| commit | 616d67c2c67d117ce27cb16d742470ad163e5ad1 (patch) | |
| tree | 8816f10c237c60d82b83e697b212e2cbe4336104 /src/live_effects/lpe-perp_bisector.cpp | |
| parent | basic support for <title> and <desc> (diff) | |
| download | inkscape-616d67c2c67d117ce27cb16d742470ad163e5ad1.tar.gz inkscape-616d67c2c67d117ce27cb16d742470ad163e5ad1.zip | |
set eol-style:native for recently added files
(bzr r5782)
Diffstat (limited to 'src/live_effects/lpe-perp_bisector.cpp')
| -rw-r--r-- | src/live_effects/lpe-perp_bisector.cpp | 408 |
1 files changed, 204 insertions, 204 deletions
diff --git a/src/live_effects/lpe-perp_bisector.cpp b/src/live_effects/lpe-perp_bisector.cpp index 52a21fbaf..39423df8b 100644 --- a/src/live_effects/lpe-perp_bisector.cpp +++ b/src/live_effects/lpe-perp_bisector.cpp @@ -1,204 +1,204 @@ -#define INKSCAPE_LPE_PERP_BISECTOR_CPP
-/** \file
- * LPE <perp_bisector> implementation.
- */
-/*
- * Authors:
- * Maximilian Albert
- * Johan Engelen
- *
- * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
- * Copyright (C) Maximilin Albert 2008 <maximilian.albert@gmail.com>
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#include "live_effects/lpe-perp_bisector.h"
-#include "display/curve.h"
-#include <libnr/n-art-bpath.h>
-#include "sp-path.h"
-#include "line-geometry.h"
-#include "sp-lpe-item.h"
-#include <2geom/path.h>
-
-namespace Inkscape {
-namespace LivePathEffect {
-
-/* FIXME: We should make these member functions of LPEPerpBisector.
- Is there an easy way to register member functions with knotholder?
- KNOWN BUG: Because of the above, this effect does not work well when in an LPE stack
- */
-NR::Point bisector_left_end_get(SPItem *item) {
- Inkscape::LivePathEffect::LPEPerpBisector *lpe =
- dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item)));
-
- if (lpe)
- return NR::Point(lpe->C);
- else
- return NR::Point(0,0);
-}
-
-NR::Point bisector_right_end_get(SPItem *item) {
- Inkscape::LivePathEffect::LPEPerpBisector *lpe =
- dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item)));
-
- if (lpe)
- return NR::Point(lpe->D);
- else
- return NR::Point(0,0);
-}
-
-void
-bisector_end_set(SPItem *item, NR::Point const &p, bool left) {
- Inkscape::LivePathEffect::LPEPerpBisector *lpe =
- dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item)));
-
- if (!lpe)
- return;
-
- double lambda = Geom::nearest_point(p.to_2geom(), lpe->M, lpe->perp_dir);
- if (left) {
- lpe->C = lpe->M + lpe->perp_dir * lambda;
- lpe->length_left.param_set_value(lambda);
- } else {
- lpe->D = lpe->M + lpe->perp_dir * lambda;
- lpe->length_right.param_set_value(-lambda);
- }
-
- // FIXME: this should not directly ask for updating the item. It should write to SVG, which triggers updating.
- sp_lpe_item_update_patheffect (SP_LPE_ITEM(item), true, true);
-}
-
-void
-bisector_left_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) {
- bisector_end_set(item, p);
-}
-
-void
-bisector_right_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) {
- bisector_end_set(item, p, false);
-}
-
-NR::Point path_start_get(SPItem *item) {
- Inkscape::LivePathEffect::LPEPerpBisector *lpe =
- dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item)));
-
- if (lpe)
- return NR::Point(lpe->A);
- else
- return NR::Point(0,0);
-}
-
-NR::Point path_end_get(SPItem *item) {
- Inkscape::LivePathEffect::LPEPerpBisector *lpe =
- dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item)));
-
- if (lpe)
- return NR::Point(lpe->B);
- else
- return NR::Point(0,0);
-}
-
-void
-path_set_start_end(SPItem *item, NR::Point const &p, bool start) {
- SPCurve* curve = sp_path_get_curve_for_edit (SP_PATH(item)); // TODO: Should we use sp_shape_get_curve()?
- NR::Matrix const i2d (sp_item_i2d_affine (SP_ITEM(item)));
-
- Geom::Point A, B;
- if (start) {
- A = p.to_2geom();
- B = (curve->last_point()).to_2geom();
- } else {
- A = (curve->first_point()).to_2geom();
- B = (p.to_2geom());
- }
-
- SPCurve *c = new SPCurve();
- c->moveto(A);
- c->lineto(B);
- sp_path_set_original_curve(SP_PATH(item), c, TRUE, true);
- c->unref();
-}
-
-void path_start_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) {
- path_set_start_end(item, p);
-}
-
-void path_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) {
- path_set_start_end(item, p, false);
-}
-
-LPEPerpBisector::LPEPerpBisector(LivePathEffectObject *lpeobject) :
- Effect(lpeobject),
- length_left(_("Length left"), _("Specifies the left end of the bisector"), "length-left", &wr, this, 200),
- length_right(_("Length right"), _("Specifies the right end of the bisector"), "length-right", &wr, this, 200),
- A(0,0), B(0,0), M(0,0), C(0,0), D(0,0), perp_dir(0,0)
-{
- // register all your parameters here, so Inkscape knows which parameters this effect has:
- registerParameter( dynamic_cast<Parameter *>(&length_left) );
- registerParameter( dynamic_cast<Parameter *>(&length_right) );
-
- registerKnotHolderHandle(path_start_set, path_start_get);
- registerKnotHolderHandle(path_end_set, path_end_get);
- registerKnotHolderHandle(bisector_left_end_set, bisector_left_end_get);
- registerKnotHolderHandle(bisector_right_end_set, bisector_right_end_get);
-}
-
-LPEPerpBisector::~LPEPerpBisector()
-{
-}
-
-void
-LPEPerpBisector::doOnApply (SPLPEItem *lpeitem)
-{
- /* make the path a straight line */
- SPCurve* curve = sp_path_get_curve_for_edit (SP_PATH(lpeitem)); // TODO: Should we use sp_shape_get_curve()?
-
- Geom::Point A((curve->first_point()).to_2geom());
- Geom::Point B((curve->last_point()).to_2geom());
-
- SPCurve *c = new SPCurve();
- c->moveto(A);
- c->lineto(B);
- // TODO: Why doesn't sp_path_set_original_curve(SP_PATH(lpeitem), c, TRUE, true) work?
- SP_PATH(lpeitem)->original_curve = c->ref();
- c->unref();
-}
-
-
-Geom::Piecewise<Geom::D2<Geom::SBasis> >
-LPEPerpBisector::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
-{
- using namespace Geom;
-
- Piecewise<D2<SBasis> > output;
-
- A = pwd2_in.firstValue();
- B = pwd2_in.lastValue();
- M = (A + B)/2;
-
- perp_dir = unit_vector((B - A).ccw());
-
- C = M + perp_dir * length_left;
- D = M - perp_dir * length_right;
-
- output = Piecewise<D2<SBasis> >(D2<SBasis>(Linear(C[X], D[X]), Linear(C[Y], D[Y])));
-
- return output;
-}
-
-/* ######################## */
-
-} //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 :
+#define INKSCAPE_LPE_PERP_BISECTOR_CPP +/** \file + * LPE <perp_bisector> implementation. + */ +/* + * Authors: + * Maximilian Albert + * Johan Engelen + * + * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl> + * Copyright (C) Maximilin Albert 2008 <maximilian.albert@gmail.com> + * + * Released under GNU GPL, read the file 'COPYING' for more information + */ + +#include "live_effects/lpe-perp_bisector.h" +#include "display/curve.h" +#include <libnr/n-art-bpath.h> +#include "sp-path.h" +#include "line-geometry.h" +#include "sp-lpe-item.h" +#include <2geom/path.h> + +namespace Inkscape { +namespace LivePathEffect { + +/* FIXME: We should make these member functions of LPEPerpBisector. + Is there an easy way to register member functions with knotholder? + KNOWN BUG: Because of the above, this effect does not work well when in an LPE stack + */ +NR::Point bisector_left_end_get(SPItem *item) { + Inkscape::LivePathEffect::LPEPerpBisector *lpe = + dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item))); + + if (lpe) + return NR::Point(lpe->C); + else + return NR::Point(0,0); +} + +NR::Point bisector_right_end_get(SPItem *item) { + Inkscape::LivePathEffect::LPEPerpBisector *lpe = + dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item))); + + if (lpe) + return NR::Point(lpe->D); + else + return NR::Point(0,0); +} + +void +bisector_end_set(SPItem *item, NR::Point const &p, bool left) { + Inkscape::LivePathEffect::LPEPerpBisector *lpe = + dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item))); + + if (!lpe) + return; + + double lambda = Geom::nearest_point(p.to_2geom(), lpe->M, lpe->perp_dir); + if (left) { + lpe->C = lpe->M + lpe->perp_dir * lambda; + lpe->length_left.param_set_value(lambda); + } else { + lpe->D = lpe->M + lpe->perp_dir * lambda; + lpe->length_right.param_set_value(-lambda); + } + + // FIXME: this should not directly ask for updating the item. It should write to SVG, which triggers updating. + sp_lpe_item_update_patheffect (SP_LPE_ITEM(item), true, true); +} + +void +bisector_left_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) { + bisector_end_set(item, p); +} + +void +bisector_right_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) { + bisector_end_set(item, p, false); +} + +NR::Point path_start_get(SPItem *item) { + Inkscape::LivePathEffect::LPEPerpBisector *lpe = + dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item))); + + if (lpe) + return NR::Point(lpe->A); + else + return NR::Point(0,0); +} + +NR::Point path_end_get(SPItem *item) { + Inkscape::LivePathEffect::LPEPerpBisector *lpe = + dynamic_cast<Inkscape::LivePathEffect::LPEPerpBisector *> (sp_lpe_item_get_current_lpe(SP_LPE_ITEM(item))); + + if (lpe) + return NR::Point(lpe->B); + else + return NR::Point(0,0); +} + +void +path_set_start_end(SPItem *item, NR::Point const &p, bool start) { + SPCurve* curve = sp_path_get_curve_for_edit (SP_PATH(item)); // TODO: Should we use sp_shape_get_curve()? + NR::Matrix const i2d (sp_item_i2d_affine (SP_ITEM(item))); + + Geom::Point A, B; + if (start) { + A = p.to_2geom(); + B = (curve->last_point()).to_2geom(); + } else { + A = (curve->first_point()).to_2geom(); + B = (p.to_2geom()); + } + + SPCurve *c = new SPCurve(); + c->moveto(A); + c->lineto(B); + sp_path_set_original_curve(SP_PATH(item), c, TRUE, true); + c->unref(); +} + +void path_start_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) { + path_set_start_end(item, p); +} + +void path_end_set(SPItem *item, NR::Point const &p, NR::Point const &/*origin*/, guint /*state*/) { + path_set_start_end(item, p, false); +} + +LPEPerpBisector::LPEPerpBisector(LivePathEffectObject *lpeobject) : + Effect(lpeobject), + length_left(_("Length left"), _("Specifies the left end of the bisector"), "length-left", &wr, this, 200), + length_right(_("Length right"), _("Specifies the right end of the bisector"), "length-right", &wr, this, 200), + A(0,0), B(0,0), M(0,0), C(0,0), D(0,0), perp_dir(0,0) +{ + // register all your parameters here, so Inkscape knows which parameters this effect has: + registerParameter( dynamic_cast<Parameter *>(&length_left) ); + registerParameter( dynamic_cast<Parameter *>(&length_right) ); + + registerKnotHolderHandle(path_start_set, path_start_get); + registerKnotHolderHandle(path_end_set, path_end_get); + registerKnotHolderHandle(bisector_left_end_set, bisector_left_end_get); + registerKnotHolderHandle(bisector_right_end_set, bisector_right_end_get); +} + +LPEPerpBisector::~LPEPerpBisector() +{ +} + +void +LPEPerpBisector::doOnApply (SPLPEItem *lpeitem) +{ + /* make the path a straight line */ + SPCurve* curve = sp_path_get_curve_for_edit (SP_PATH(lpeitem)); // TODO: Should we use sp_shape_get_curve()? + + Geom::Point A((curve->first_point()).to_2geom()); + Geom::Point B((curve->last_point()).to_2geom()); + + SPCurve *c = new SPCurve(); + c->moveto(A); + c->lineto(B); + // TODO: Why doesn't sp_path_set_original_curve(SP_PATH(lpeitem), c, TRUE, true) work? + SP_PATH(lpeitem)->original_curve = c->ref(); + c->unref(); +} + + +Geom::Piecewise<Geom::D2<Geom::SBasis> > +LPEPerpBisector::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in) +{ + using namespace Geom; + + Piecewise<D2<SBasis> > output; + + A = pwd2_in.firstValue(); + B = pwd2_in.lastValue(); + M = (A + B)/2; + + perp_dir = unit_vector((B - A).ccw()); + + C = M + perp_dir * length_left; + D = M - perp_dir * length_right; + + output = Piecewise<D2<SBasis> >(D2<SBasis>(Linear(C[X], D[X]), Linear(C[Y], D[Y]))); + + return output; +} + +/* ######################## */ + +} //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 : |
