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index c6140d17d08e30ce0ae78699df481b84b05b9788..c56ba7a4c197092d932ae979f8108b648530d833 100644 (file)
#include "message-context.h"
#include "prefs-utils.h"
#include "pixmaps/cursor-calligraphy.xpm"
-#include "libnr/n-art-bpath.h"
-#include "libnr/nr-path.h"
#include "libnr/nr-matrix-ops.h"
#include "libnr/nr-scale-translate-ops.h"
+#include "libnr/nr-convert2geom.h"
#include "xml/repr.h"
#include "context-fns.h"
#include "sp-item.h"
#include "display/canvas-bpath.h"
#include "display/canvas-arena.h"
#include "livarot/Shape.h"
-#include "isnan.h"
+#include <2geom/isnan.h>
+#include <2geom/pathvector.h>
#include "dyna-draw-context.h"
#define DYNA_MIN_WIDTH 1.0e-6
-
-// FIXME: move it to some shared file to be reused by both calligraphy and dropper
-#define C1 0.552
-static NArtBpath const hatch_area_circle[] = {
- { NR_MOVETO, 0, 0, 0, 0, -1, 0 },
- { NR_CURVETO, -1, C1, -C1, 1, 0, 1 },
- { NR_CURVETO, C1, 1, 1, C1, 1, 0 },
- { NR_CURVETO, 1, -C1, C1, -1, 0, -1 },
- { NR_CURVETO, -C1, -1, -1, -C1, -1, 0 },
- { NR_END, 0, 0, 0, 0, 0, 0 }
-};
-#undef C1
-
-
static void sp_dyna_draw_context_class_init(SPDynaDrawContextClass *klass);
static void sp_dyna_draw_context_init(SPDynaDrawContext *ddc);
static void sp_dyna_draw_context_dispose(GObject *object);
static void clear_current(SPDynaDrawContext *dc);
static void set_to_accumulated(SPDynaDrawContext *dc, bool unionize);
-static void add_cap(SPCurve *curve, NR::Point const &pre, NR::Point const &from, NR::Point const &to, NR::Point const &post, double rounding);
-static void accumulate_calligraphic(SPDynaDrawContext *dc);
+static void add_cap(SPCurve *curve, NR::Point const &from, NR::Point const &to, double rounding);
+static bool accumulate_calligraphic(SPDynaDrawContext *dc);
static void fit_and_split(SPDynaDrawContext *ddc, gboolean release);
if (((SPEventContextClass *) dd_parent_class)->setup)
((SPEventContextClass *) dd_parent_class)->setup(ec);
- ddc->accumulated = new SPCurve(32);
- ddc->currentcurve = new SPCurve(4);
+ ddc->accumulated = new SPCurve();
+ ddc->currentcurve = new SPCurve();
- ddc->cal1 = new SPCurve(32);
- ddc->cal2 = new SPCurve(32);
+ ddc->cal1 = new SPCurve();
+ ddc->cal2 = new SPCurve();
ddc->currentshape = sp_canvas_item_new(sp_desktop_sketch(ec->desktop), SP_TYPE_CANVAS_BPATH, NULL);
sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(ddc->currentshape), DDC_RED_RGBA, SP_WIND_RULE_EVENODD);
g_signal_connect(G_OBJECT(ddc->currentshape), "event", G_CALLBACK(sp_desktop_root_handler), ec->desktop);
{
- SPCurve *c = SPCurve::new_from_foreign_bpath(hatch_area_circle);
+ /* TODO: this can be done either with an arcto, and should maybe also be put in a general file (other tools use this as well) */
+ SPCurve *c = new SPCurve();
+ const double C1 = 0.552;
+ c->moveto(-1,0);
+ c->curveto(-1, C1, -C1, 1, 0, 1 );
+ c->curveto(C1, 1, 1, C1, 1, 0 );
+ c->curveto(1, -C1, C1, -1, 0, -1 );
+ c->curveto(-C1, -1, -1, -C1, -1, 0 );
+ c->closepath();
ddc->hatch_area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c);
c->unref();
sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(ddc->hatch_area), 0x00000000,(SPWindRule)0);
pointer = motion_dt * motion_to_curve;
// calculate the nearest point on the guide path
- NR::Maybe<Path::cut_position> position = get_nearest_position_on_Path(dc->hatch_livarot_path, pointer);
+ boost::optional<Path::cut_position> position = get_nearest_position_on_Path(dc->hatch_livarot_path, pointer);
nearest = get_point_on_Path(dc->hatch_livarot_path, position->piece, position->t);
/* Create object */
fit_and_split(dc, TRUE);
- accumulate_calligraphic(dc);
- set_to_accumulated(dc, event->button.state & GDK_SHIFT_MASK); // performs document_done
+ if (accumulate_calligraphic(dc))
+ set_to_accumulated(dc, event->button.state & GDK_SHIFT_MASK); // performs document_done
+ else
+ g_warning ("Failed to create path: invalid data in dc->cal1 or dc->cal2");
/* reset accumulated curve */
dc->accumulated->reset();
SPDesktop *desktop = SP_EVENT_CONTEXT(dc)->desktop;
if (!dc->accumulated->is_empty()) {
- NArtBpath *abp;
- gchar *str;
-
if (!dc->repr) {
/* Create object */
Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
item->transform = SP_ITEM(desktop->currentRoot())->getRelativeTransform(desktop->currentLayer());
item->updateRepr();
}
- abp = nr_artpath_affine(dc->accumulated->get_bpath(), sp_desktop_dt2root_affine(desktop));
- str = sp_svg_write_path(abp);
+ Geom::PathVector pathv = dc->accumulated->get_pathvector() * sp_desktop_dt2root_affine(desktop);
+ gchar *str = sp_svg_write_path(pathv);
g_assert( str != NULL );
- g_free(abp);
dc->repr->setAttribute("d", str);
g_free(str);
static void
add_cap(SPCurve *curve,
- NR::Point const &pre, NR::Point const &from,
- NR::Point const &to, NR::Point const &post,
+ NR::Point const &from,
+ NR::Point const &to,
double rounding)
{
- NR::Point vel = rounding * NR::rot90( to - from ) / sqrt(2.0);
- double mag = NR::L2(vel);
-
- NR::Point v_in = from - pre;
- double mag_in = NR::L2(v_in);
- if ( mag_in > DYNA_EPSILON ) {
- v_in = mag * v_in / mag_in;
- } else {
- v_in = NR::Point(0, 0);
- }
-
- NR::Point v_out = to - post;
- double mag_out = NR::L2(v_out);
- if ( mag_out > DYNA_EPSILON ) {
- v_out = mag * v_out / mag_out;
- } else {
- v_out = NR::Point(0, 0);
- }
+ if (NR::L2( to - from ) > DYNA_EPSILON) {
+ NR::Point vel = rounding * NR::rot90( to - from ) / sqrt(2.0);
+ double mag = NR::L2(vel);
- if ( NR::L2(v_in) > DYNA_EPSILON || NR::L2(v_out) > DYNA_EPSILON ) {
- curve->curveto(from + v_in, to + v_out, to);
+ NR::Point v = mag * NR::rot90( to - from ) / NR::L2( to - from );
+ curve->curveto(from + v, to + v, to);
}
}
-static void
+static bool
accumulate_calligraphic(SPDynaDrawContext *dc)
{
- if ( !dc->cal1->is_empty() && !dc->cal2->is_empty() ) {
- dc->accumulated->reset(); /* Is this required ?? */
+ if (
+ dc->cal1->is_empty() ||
+ dc->cal2->is_empty() ||
+ (dc->cal1->get_segment_count() <= 0) ||
+ dc->cal1->first_path()->closed()
+ ) {
+ dc->cal1->reset();
+ dc->cal2->reset();
+ return false; // failure
+ }
+
SPCurve *rev_cal2 = dc->cal2->create_reverse();
+ if (
+ (rev_cal2->get_segment_count() <= 0) ||
+ rev_cal2->first_path()->closed()
+ ) {
+ rev_cal2->unref();
+ dc->cal1->reset();
+ dc->cal2->reset();
+ return false; // failure
+ }
+
+ Geom::CubicBezier const * dc_cal1_firstseg = dynamic_cast<Geom::CubicBezier const *>( dc->cal1->first_segment() );
+ Geom::CubicBezier const * rev_cal2_firstseg = dynamic_cast<Geom::CubicBezier const *>( rev_cal2->first_segment() );
+ Geom::CubicBezier const * dc_cal1_lastseg = dynamic_cast<Geom::CubicBezier const *>( dc->cal1->last_segment() );
+ Geom::CubicBezier const * rev_cal2_lastseg = dynamic_cast<Geom::CubicBezier const *>( rev_cal2->last_segment() );
+
+ if (
+ !dc_cal1_firstseg ||
+ !rev_cal2_firstseg ||
+ !dc_cal1_lastseg ||
+ !rev_cal2_lastseg
+ ) {
+ rev_cal2->unref();
+ dc->cal1->reset();
+ dc->cal2->reset();
+ return false; // failure
+ }
- g_assert(dc->cal1->get_length() > 1);
- g_assert(rev_cal2->get_length() > 1);
- g_assert(SP_CURVE_SEGMENT(dc->cal1, 0)->code == NR_MOVETO_OPEN);
- g_assert(SP_CURVE_SEGMENT(rev_cal2, 0)->code == NR_MOVETO_OPEN);
- g_assert(SP_CURVE_SEGMENT(dc->cal1, 1)->code == NR_CURVETO);
- g_assert(SP_CURVE_SEGMENT(rev_cal2, 1)->code == NR_CURVETO);
- g_assert(SP_CURVE_SEGMENT(dc->cal1, dc->cal1->get_length()-1)->code == NR_CURVETO);
- g_assert(SP_CURVE_SEGMENT(rev_cal2, rev_cal2->get_length()-1)->code == NR_CURVETO);
+ dc->accumulated->reset(); /* Is this required ?? */
- dc->accumulated->append(dc->cal1, FALSE);
+ dc->accumulated->append(dc->cal1, false);
- add_cap(dc->accumulated, SP_CURVE_SEGMENT(dc->cal1, dc->cal1->get_length()-1)->c(2), SP_CURVE_SEGMENT(dc->cal1, dc->cal1->get_length()-1)->c(3), SP_CURVE_SEGMENT(rev_cal2, 0)->c(3), SP_CURVE_SEGMENT(rev_cal2, 1)->c(1), dc->cap_rounding);
+ add_cap(dc->accumulated, (*dc_cal1_lastseg)[3], (*rev_cal2_firstseg)[0], dc->cap_rounding);
- dc->accumulated->append(rev_cal2, TRUE);
+ dc->accumulated->append(rev_cal2, true);
- add_cap(dc->accumulated, SP_CURVE_SEGMENT(rev_cal2, rev_cal2->get_length()-1)->c(2), SP_CURVE_SEGMENT(rev_cal2, rev_cal2->get_length()-1)->c(3), SP_CURVE_SEGMENT(dc->cal1, 0)->c(3), SP_CURVE_SEGMENT(dc->cal1, 1)->c(1), dc->cap_rounding);
+ add_cap(dc->accumulated, (*rev_cal2_lastseg)[3], (*dc_cal1_firstseg)[0], dc->cap_rounding);
dc->accumulated->closepath();
dc->cal1->reset();
dc->cal2->reset();
- }
+
+ return true; // success
}
static double square(double const x)
#endif
/* Current calligraphic */
- if ( dc->cal1->get_length() == 0 || dc->cal2->get_length() == 0 ) {
+ if ( dc->cal1->is_empty() || dc->cal2->is_empty() ) {
/* dc->npoints > 0 */
/* g_print("calligraphics(1|2) reset\n"); */
dc->cal1->reset();
dc->currentcurve->reset();
dc->currentcurve->moveto(b1[0]);
for (NR::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
- dc->currentcurve->curveto(bp1[1],
- bp1[2], bp1[3]);
+ dc->currentcurve->curveto(bp1[1], bp1[2], bp1[3]);
}
dc->currentcurve->lineto(b2[BEZIER_SIZE*(nb2-1) + 3]);
for (NR::Point *bp2 = b2 + BEZIER_SIZE * ( nb2 - 1 ); bp2 >= b2; bp2 -= BEZIER_SIZE) {
}
// FIXME: dc->segments is always NULL at this point??
if (!dc->segments) { // first segment
- add_cap(dc->currentcurve, b2[1], b2[0], b1[0], b1[1], dc->cap_rounding);
+ add_cap(dc->currentcurve, b2[0], b1[0], dc->cap_rounding);
}
dc->currentcurve->closepath();
sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(dc->currentshape), dc->currentcurve);
{
dc->currentcurve->reset();
- dc->currentcurve->moveto(dc->point1[dc->npoints-1]);
+ dc->currentcurve->moveto(dc->point2[dc->npoints-1]);
for (gint i = dc->npoints-2; i >= 0; i--) {
- dc->currentcurve->lineto(dc->point1[i]);
+ dc->currentcurve->lineto(dc->point2[i]);
}
for (gint i = 0; i < dc->npoints; i++) {
- dc->currentcurve->lineto(dc->point2[i]);
+ dc->currentcurve->lineto(dc->point1[i]);
}
+
if (dc->npoints >= 2) {
- add_cap(dc->currentcurve, dc->point2[dc->npoints-2], dc->point2[dc->npoints-1], dc->point1[dc->npoints-1], dc->point1[dc->npoints-2], dc->cap_rounding);
+ add_cap(dc->currentcurve, dc->point1[dc->npoints-1], dc->point2[dc->npoints-1], dc->cap_rounding);
}
dc->currentcurve->closepath();