![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 18ebf2b061287cabf8f6f78d9b17c79ef8e44d42..93d4262cd172512dbfe53d9fe6befc064f398009 100644 (file)
-#define __SP_DYNA_DRAW_CONTEXT_C__
-
/*
* Handwriting-like drawing mode
*
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak <buliabyak@users.sf.net>
* MenTaLguY <mental@rydia.net>
+ * Abhishek Sharma
*
* The original dynadraw code:
* Paul Haeberli <paul@sgi.com>
#include "svg/svg.h"
#include "display/canvas-bpath.h"
-#include "display/bezier-utils.h"
+#include <2geom/isnan.h>
+#include <2geom/pathvector.h>
+#include <2geom/bezier-utils.h>
#include "display/curve.h"
#include <glib/gmem.h>
#include "macros.h"
#include "desktop.h"
#include "desktop-events.h"
#include "desktop-handles.h"
-#include "desktop-affine.h"
#include "desktop-style.h"
#include "message-context.h"
-#include "prefs-utils.h"
+#include "preferences.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 "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 "2geom/isnan.h"
#include "dyna-draw-context.h"
+using Inkscape::DocumentUndo;
+
#define DDC_RED_RGBA 0xff0000ff
#define TOLERANCE_CALLIGRAPHIC 0.1
#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 sp_dyna_draw_context_setup(SPEventContext *ec);
-static void sp_dyna_draw_context_set(SPEventContext *ec, gchar const *key, gchar const *val);
+static void sp_dyna_draw_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *value);
static gint sp_dyna_draw_context_root_handler(SPEventContext *ec, GdkEvent *event);
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 set_to_accumulated(SPDynaDrawContext *dc, bool unionize, bool subtract);
+static void add_cap(SPCurve *curve, Geom::Point const &from, Geom::Point const &to, double rounding);
+static bool accumulate_calligraphic(SPDynaDrawContext *dc);
static void fit_and_split(SPDynaDrawContext *ddc, gboolean release);
-static void sp_dyna_draw_reset(SPDynaDrawContext *ddc, NR::Point p);
-static NR::Point sp_dyna_draw_get_npoint(SPDynaDrawContext const *ddc, NR::Point v);
-static NR::Point sp_dyna_draw_get_vpoint(SPDynaDrawContext const *ddc, NR::Point n);
+static void sp_dyna_draw_reset(SPDynaDrawContext *ddc, Geom::Point p);
+static Geom::Point sp_dyna_draw_get_npoint(SPDynaDrawContext const *ddc, Geom::Point v);
+static Geom::Point sp_dyna_draw_get_vpoint(SPDynaDrawContext const *ddc, Geom::Point n);
static void draw_temporary_box(SPDynaDrawContext *dc);
ddc->hatch_spacing_step = 0;
new (&ddc->hatch_pointer_past) std::list<double>();
new (&ddc->hatch_nearest_past) std::list<double>();
- ddc->hatch_last_nearest = NR::Point(0,0);
- ddc->hatch_last_pointer = NR::Point(0,0);
- ddc->hatch_vector_accumulated = NR::Point(0,0);
+ new (&ddc->inertia_vectors) std::list<Geom::Point>();
+ new (&ddc->hatch_vectors) std::list<Geom::Point>();
+ ddc->hatch_last_nearest = Geom::Point(0,0);
+ ddc->hatch_last_pointer = Geom::Point(0,0);
ddc->hatch_escaped = false;
ddc->hatch_area = NULL;
ddc->hatch_item = NULL;
ddc->hatch_livarot_path = NULL;
ddc->trace_bg = false;
+ ddc->just_started_drawing = false;
}
static void
ddc->hatch_pointer_past.~list();
ddc->hatch_nearest_past.~list();
+ ddc->inertia_vectors.~list();
+ ddc->hatch_vectors.~list();
}
static void
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);
sp_event_context_read(ec, "cap_rounding");
ddc->is_drawing = false;
-
ddc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack());
- if (prefs_get_int_attribute("tools.calligraphic", "selcue", 0) != 0) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ if (prefs->getBool("/tools/calligraphic/selcue")) {
ec->enableSelectionCue();
}
}
static void
-sp_dyna_draw_context_set(SPEventContext *ec, gchar const *key, gchar const *val)
+sp_dyna_draw_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
{
SPDynaDrawContext *ddc = SP_DYNA_DRAW_CONTEXT(ec);
+ Glib::ustring path = val->getEntryName();
- if (!strcmp(key, "tracebackground")) {
- ddc->trace_bg = (val && strcmp(val, "0"));
- } else if (!strcmp(key, "keep_selected")) {
- ddc->keep_selected = (val && strcmp(val, "0"));
+ if (path == "tracebackground") {
+ ddc->trace_bg = val->getBool();
+ } else if (path == "keep_selected") {
+ ddc->keep_selected = val->getBool();
} else {
//pass on up to parent class to handle common attributes.
if ( dd_parent_class->set ) {
- dd_parent_class->set(ec, key, val);
+ dd_parent_class->set(ec, val);
}
}
}
/* Get normalized point */
-static NR::Point
-sp_dyna_draw_get_npoint(SPDynaDrawContext const *dc, NR::Point v)
+static Geom::Point
+sp_dyna_draw_get_npoint(SPDynaDrawContext const *dc, Geom::Point v)
{
- NR::Rect drect = SP_EVENT_CONTEXT(dc)->desktop->get_display_area();
- double const max = MAX ( drect.dimensions()[NR::X], drect.dimensions()[NR::Y] );
- return NR::Point(( v[NR::X] - drect.min()[NR::X] ) / max, ( v[NR::Y] - drect.min()[NR::Y] ) / max);
+ Geom::Rect drect = SP_EVENT_CONTEXT(dc)->desktop->get_display_area();
+ double const max = MAX ( drect.dimensions()[Geom::X], drect.dimensions()[Geom::Y] );
+ return Geom::Point(( v[Geom::X] - drect.min()[Geom::X] ) / max, ( v[Geom::Y] - drect.min()[Geom::Y] ) / max);
}
/* Get view point */
-static NR::Point
-sp_dyna_draw_get_vpoint(SPDynaDrawContext const *dc, NR::Point n)
+static Geom::Point
+sp_dyna_draw_get_vpoint(SPDynaDrawContext const *dc, Geom::Point n)
{
- NR::Rect drect = SP_EVENT_CONTEXT(dc)->desktop->get_display_area();
- double const max = MAX ( drect.dimensions()[NR::X], drect.dimensions()[NR::Y] );
- return NR::Point(n[NR::X] * max + drect.min()[NR::X], n[NR::Y] * max + drect.min()[NR::Y]);
+ Geom::Rect drect = SP_EVENT_CONTEXT(dc)->desktop->get_display_area();
+ double const max = MAX ( drect.dimensions()[Geom::X], drect.dimensions()[Geom::Y] );
+ return Geom::Point(n[Geom::X] * max + drect.min()[Geom::X], n[Geom::Y] * max + drect.min()[Geom::Y]);
}
static void
-sp_dyna_draw_reset(SPDynaDrawContext *dc, NR::Point p)
+sp_dyna_draw_reset(SPDynaDrawContext *dc, Geom::Point p)
{
dc->last = dc->cur = sp_dyna_draw_get_npoint(dc, p);
- dc->vel = NR::Point(0,0);
+ dc->vel = Geom::Point(0,0);
dc->vel_max = 0;
- dc->acc = NR::Point(0,0);
- dc->ang = NR::Point(0,0);
- dc->del = NR::Point(0,0);
+ dc->acc = Geom::Point(0,0);
+ dc->ang = Geom::Point(0,0);
+ dc->del = Geom::Point(0,0);
}
static void
static gboolean
-sp_dyna_draw_apply(SPDynaDrawContext *dc, NR::Point p)
+sp_dyna_draw_apply(SPDynaDrawContext *dc, Geom::Point p)
{
- NR::Point n = sp_dyna_draw_get_npoint(dc, p);
+ Geom::Point n = sp_dyna_draw_get_npoint(dc, p);
/* Calculate mass and drag */
double const mass = flerp(1.0, 160.0, dc->mass);
double const drag = flerp(0.0, 0.5, dc->drag * dc->drag);
/* Calculate force and acceleration */
- NR::Point force = n - dc->cur;
+ Geom::Point force = n - dc->cur;
// If force is below the absolute threshold DYNA_EPSILON,
// or we haven't yet reached DYNA_VEL_START (i.e. at the beginning of stroke)
// _and_ the force is below the (higher) DYNA_EPSILON_START threshold,
- // discard this move.
+ // discard this move.
// This prevents flips, blobs, and jerks caused by microscopic tremor of the tablet pen,
// especially bothersome at the start of the stroke where we don't yet have the inertia to
// smooth them out.
- if ( NR::L2(force) < DYNA_EPSILON || (dc->vel_max < DYNA_VEL_START && NR::L2(force) < DYNA_EPSILON_START)) {
+ if ( Geom::L2(force) < DYNA_EPSILON || (dc->vel_max < DYNA_VEL_START && Geom::L2(force) < DYNA_EPSILON_START)) {
return FALSE;
}
/* Calculate new velocity */
dc->vel += dc->acc;
- if (NR::L2(dc->vel) > dc->vel_max)
- dc->vel_max = NR::L2(dc->vel);
+ if (Geom::L2(dc->vel) > dc->vel_max)
+ dc->vel_max = Geom::L2(dc->vel);
/* Calculate angle of drawing tool */
gdouble length = std::sqrt(dc->xtilt*dc->xtilt + dc->ytilt*dc->ytilt);;
if (length > 0) {
- NR::Point ang1 = NR::Point(dc->ytilt/length, dc->xtilt/length);
+ Geom::Point ang1 = Geom::Point(dc->ytilt/length, dc->xtilt/length);
a1 = atan2(ang1);
}
else
else {
// 1b. fixed dc->angle (absolutely flat nib):
double const radians = ( (dc->angle - 90) / 180.0 ) * M_PI;
- NR::Point ang1 = NR::Point(-sin(radians), cos(radians));
+ Geom::Point ang1 = Geom::Point(-sin(radians), cos(radians));
a1 = atan2(ang1);
}
// 2. perpendicular to dc->vel (absolutely non-flat nib):
- gdouble const mag_vel = NR::L2(dc->vel);
+ gdouble const mag_vel = Geom::L2(dc->vel);
if ( mag_vel < DYNA_EPSILON ) {
return FALSE;
}
- NR::Point ang2 = NR::rot90(dc->vel) / mag_vel;
+ Geom::Point ang2 = Geom::rot90(dc->vel) / mag_vel;
// 3. Average them using flatness parameter:
// calculate angles
// Try to detect a sudden flip when the new angle differs too much from the previous for the
// current velocity; in that case discard this move
- double angle_delta = NR::L2(NR::Point (cos (new_ang), sin (new_ang)) - dc->ang);
- if ( angle_delta / NR::L2(dc->vel) > 4000 ) {
+ double angle_delta = Geom::L2(Geom::Point (cos (new_ang), sin (new_ang)) - dc->ang);
+ if ( angle_delta / Geom::L2(dc->vel) > 4000 ) {
return FALSE;
}
// convert to point
- dc->ang = NR::Point (cos (new_ang), sin (new_ang));
+ dc->ang = Geom::Point (cos (new_ang), sin (new_ang));
-// g_print ("force %g acc %g vel_max %g vel %g a1 %g a2 %g new_ang %g\n", NR::L2(force), NR::L2(dc->acc), dc->vel_max, NR::L2(dc->vel), a1, a2, new_ang);
+// g_print ("force %g acc %g vel_max %g vel %g a1 %g a2 %g new_ang %g\n", Geom::L2(force), Geom::L2(dc->acc), dc->vel_max, Geom::L2(dc->vel), a1, a2, new_ang);
/* Apply drag */
dc->vel *= 1.0 - drag;
// get the real brush point, not the same as pointer (affected by hatch tracking and/or mass
// drag)
- NR::Point brush = sp_dyna_draw_get_vpoint(dc, dc->cur);
- NR::Point brush_w = SP_EVENT_CONTEXT(dc)->desktop->d2w(brush);
+ Geom::Point brush = sp_dyna_draw_get_vpoint(dc, dc->cur);
+ Geom::Point brush_w = SP_EVENT_CONTEXT(dc)->desktop->d2w(brush);
double trace_thick = 1;
if (dc->trace_bg) {
// pick single pixel
NRPixBlock pb;
- int x = (int) floor(brush_w[NR::X]);
- int y = (int) floor(brush_w[NR::Y]);
+ int x = (int) floor(brush_w[Geom::X]);
+ int y = (int) floor(brush_w[Geom::Y]);
nr_pixblock_setup_fast(&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, x, y, x+1, y+1, TRUE);
sp_canvas_arena_render_pixblock(SP_CANVAS_ARENA(sp_desktop_drawing(SP_EVENT_CONTEXT(dc)->desktop)), &pb);
const unsigned char *s = NR_PIXBLOCK_PX(&pb);
//g_print ("L %g thick %g\n", L, trace_thick);
}
- double width = (pressure_thick * trace_thick - vel_thin * NR::L2(dc->vel)) * dc->width;
+ double width = (pressure_thick * trace_thick - vel_thin * Geom::L2(dc->vel)) * dc->width;
double tremble_left = 0, tremble_right = 0;
if (dc->tremor > 0) {
// (2) deflection depends on width, but is upped for small widths for better visual uniformity across widths;
// (3) deflection somewhat depends on speed, to prevent fast strokes looking
// comparatively smooth and slow ones excessively jittery
- tremble_left = (y1)*dc->tremor * (0.15 + 0.8*width) * (0.35 + 14*NR::L2(dc->vel));
- tremble_right = (y2)*dc->tremor * (0.15 + 0.8*width) * (0.35 + 14*NR::L2(dc->vel));
+ tremble_left = (y1)*dc->tremor * (0.15 + 0.8*width) * (0.35 + 14*Geom::L2(dc->vel));
+ tremble_right = (y2)*dc->tremor * (0.15 + 0.8*width) * (0.35 + 14*Geom::L2(dc->vel));
}
if ( width < 0.02 * dc->width ) {
dezoomify_factor /= SP_EVENT_CONTEXT(dc)->desktop->current_zoom();
}
- NR::Point del_left = dezoomify_factor * (width + tremble_left) * dc->ang;
- NR::Point del_right = dezoomify_factor * (width + tremble_right) * dc->ang;
+ Geom::Point del_left = dezoomify_factor * (width + tremble_left) * dc->ang;
+ Geom::Point del_right = dezoomify_factor * (width + tremble_right) * dc->ang;
dc->point1[dc->npoints] = brush + del_left;
dc->point2[dc->npoints] = brush - del_right;
return TRUE;
}
- NR::Point const button_w(event->button.x,
- event->button.y);
- NR::Point const button_dt(desktop->w2d(button_w));
- sp_dyna_draw_reset(dc, button_dt);
- sp_dyna_draw_extinput(dc, event);
- sp_dyna_draw_apply(dc, button_dt);
dc->accumulated->reset();
if (dc->repr) {
dc->repr = NULL;
sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 3);
dc->is_drawing = true;
+ dc->just_started_drawing = true;
}
break;
case GDK_MOTION_NOTIFY:
{
- NR::Point const motion_w(event->motion.x,
+ Geom::Point const motion_w(event->motion.x,
event->motion.y);
- NR::Point motion_dt(desktop->w2d(motion_w));
+ Geom::Point motion_dt(desktop->w2d(motion_w));
sp_dyna_draw_extinput(dc, event);
dc->_message_context->clear();
// for hatching:
double hatch_dist = 0;
- NR::Point hatch_unit_vector(0,0);
- NR::Point nearest(0,0);
- NR::Point pointer(0,0);
- NR::Matrix motion_to_curve(NR::identity());
+ Geom::Point hatch_unit_vector(0,0);
+ Geom::Point nearest(0,0);
+ Geom::Point pointer(0,0);
+ Geom::Matrix motion_to_curve(Geom::identity());
if (event->motion.state & GDK_CONTROL_MASK) { // hatching - sense the item
}
// calculate pointer point in the guide item's coords
- motion_to_curve = from_2geom(sp_item_dt2i_affine(selected) * sp_item_i2doc_affine(selected));
+ motion_to_curve = selected->dt2i_affine() * selected->i2doc_affine();
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);
// distance from pointer to nearest
- hatch_dist = NR::L2(pointer - nearest);
+ hatch_dist = Geom::L2(pointer - nearest);
// unit-length vector
hatch_unit_vector = (pointer - nearest)/hatch_dist;
} else {
dc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Select a guide path</b> to track with <b>Ctrl</b>"));
}
- }
+ }
if ( dc->is_drawing && (event->motion.state & GDK_BUTTON1_MASK) && !event_context->space_panning) {
dc->dragging = TRUE;
if (event->motion.state & GDK_CONTROL_MASK && dc->hatch_item) { // hatching
+#define HATCH_VECTOR_ELEMENTS 12
+#define INERTIA_ELEMENTS 24
#define SPEED_ELEMENTS 12
-#define SPEED_MIN 0.12
-#define SPEED_NORMAL 0.65
+#define SPEED_MIN 0.3
+#define SPEED_NORMAL 0.35
+#define INERTIA_FORCE 0.5
// speed is the movement of the nearest point along the guide path, divided by
// the movement of the pointer at the same period; it is averaged for the last
// mass recommended; with zero mass, jerks are still quite noticeable).
double speed = 1;
- if (NR::L2(dc->hatch_last_nearest) != 0) {
+ if (Geom::L2(dc->hatch_last_nearest) != 0) {
// the distance nearest moved since the last motion event
- double nearest_moved = NR::L2(nearest - dc->hatch_last_nearest);
+ double nearest_moved = Geom::L2(nearest - dc->hatch_last_nearest);
// the distance pointer moved since the last motion event
- double pointer_moved = NR::L2(pointer - dc->hatch_last_pointer);
+ double pointer_moved = Geom::L2(pointer - dc->hatch_last_pointer);
// store them in stacks limited to SPEED_ELEMENTS
dc->hatch_nearest_past.push_front(nearest_moved);
if (dc->hatch_nearest_past.size() > SPEED_ELEMENTS)
) {
// We are NOT attracted to the guide!
- //g_print ("\nlast_nearest %g %g nearest %g %g pointer %g %g pos %d %g\n", dc->last_nearest[NR::X], dc->last_nearest[NR::Y], nearest[NR::X], nearest[NR::Y], pointer[NR::X], pointer[NR::Y], position->piece, position->t);
+ //g_print ("\nlast_nearest %g %g nearest %g %g pointer %g %g pos %d %g\n", dc->last_nearest[Geom::X], dc->last_nearest[Geom::Y], nearest[Geom::X], nearest[Geom::Y], pointer[Geom::X], pointer[Geom::Y], position->piece, position->t);
// Remember hatch_escaped so we don't get
// attracted again until the end of this stroke
dc->hatch_escaped = true;
+ if (dc->inertia_vectors.size() >= INERTIA_ELEMENTS/2) { // move by inertia
+ Geom::Point moved_past_escape = motion_dt - dc->inertia_vectors.front();
+ Geom::Point inertia =
+ dc->inertia_vectors.front() - dc->inertia_vectors.back();
+
+ double dot = Geom::dot (moved_past_escape, inertia);
+ dot /= Geom::L2(moved_past_escape) * Geom::L2(inertia);
+
+ if (dot > 0) { // mouse is still moving in approx the same direction
+ Geom::Point should_have_moved =
+ (inertia) * (1/Geom::L2(inertia)) * Geom::L2(moved_past_escape);
+ motion_dt = dc->inertia_vectors.front() +
+ (INERTIA_FORCE * should_have_moved + (1 - INERTIA_FORCE) * moved_past_escape);
+ }
+ }
+
} else {
// Calculate angle cosine of this vector-to-guide and all past vectors
// summed, to detect if we accidentally flipped to the other side of the
// guide
- double dot = NR::dot (pointer - nearest, dc->hatch_vector_accumulated);
- dot /= NR::L2(pointer - nearest) * NR::L2(dc->hatch_vector_accumulated);
+ Geom::Point hatch_vector_accumulated = std::accumulate
+ (dc->hatch_vectors.begin(), dc->hatch_vectors.end(), Geom::Point(0,0));
+ double dot = Geom::dot (pointer - nearest, hatch_vector_accumulated);
+ dot /= Geom::L2(pointer - nearest) * Geom::L2(hatch_vector_accumulated);
if (dc->hatch_spacing != 0) { // spacing was already set
double target;
} else {
// looks like we're starting to lose speed,
// so _gradually_ let go attraction to prevent jerks
- target = (dc->hatch_spacing * speed + hatch_dist * (SPEED_NORMAL - speed))/SPEED_NORMAL;
+ target = (dc->hatch_spacing * speed + hatch_dist * (SPEED_NORMAL - speed))/SPEED_NORMAL;
}
if (!IS_NAN(dot) && dot < -0.5) {// flip
target = -target;
}
// This is the track pointer that we will use instead of the real one
- NR::Point new_pointer = nearest + target * hatch_unit_vector;
+ Geom::Point new_pointer = nearest + target * hatch_unit_vector;
// some limited feedback: allow persistent pulling to slightly change
// the spacing
// return it to the desktop coords
motion_dt = new_pointer * motion_to_curve.inverse();
+ if (speed >= SPEED_NORMAL) {
+ dc->inertia_vectors.push_front(motion_dt);
+ if (dc->inertia_vectors.size() > INERTIA_ELEMENTS)
+ dc->inertia_vectors.pop_back();
+ }
+
} else {
- // this is the first motion event, set the dist
+ // this is the first motion event, set the dist
dc->hatch_spacing = hatch_dist;
}
// remember last points
dc->hatch_last_pointer = pointer;
dc->hatch_last_nearest = nearest;
- dc->hatch_vector_accumulated += (pointer - nearest);
+
+ dc->hatch_vectors.push_front(pointer - nearest);
+ if (dc->hatch_vectors.size() > HATCH_VECTOR_ELEMENTS)
+ dc->hatch_vectors.pop_back();
}
dc->_message_context->set(Inkscape::NORMAL_MESSAGE, dc->hatch_escaped? _("Tracking: <b>connection to guide path lost!</b>") : _("<b>Tracking</b> a guide path"));
dc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drawing</b> a calligraphic stroke"));
}
+ if (dc->just_started_drawing) {
+ dc->just_started_drawing = false;
+ sp_dyna_draw_reset(dc, motion_dt);
+ }
+
if (!sp_dyna_draw_apply(dc, motion_dt)) {
ret = TRUE;
break;
}
// Draw the hatching circle if necessary
- if (event->motion.state & GDK_CONTROL_MASK) {
- if (dc->hatch_spacing == 0 && hatch_dist != 0) {
+ if (event->motion.state & GDK_CONTROL_MASK) {
+ if (dc->hatch_spacing == 0 && hatch_dist != 0) {
// Haven't set spacing yet: gray, center free, update radius live
- NR::Point c = desktop->w2d(motion_w);
- NR::Matrix const sm (NR::scale(hatch_dist, hatch_dist) * NR::translate(c));
+ Geom::Point c = desktop->w2d(motion_w);
+ Geom::Matrix const sm (Geom::Scale(hatch_dist, hatch_dist) * Geom::Translate(c));
sp_canvas_item_affine_absolute(dc->hatch_area, sm);
sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->hatch_area), 0x7f7f7fff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
sp_canvas_item_show(dc->hatch_area);
} else if (dc->dragging && !dc->hatch_escaped) {
// Tracking: green, center snapped, fixed radius
- NR::Point c = motion_dt;
- NR::Matrix const sm (NR::scale(dc->hatch_spacing, dc->hatch_spacing) * NR::translate(c));
+ Geom::Point c = motion_dt;
+ Geom::Matrix const sm (Geom::Scale(dc->hatch_spacing, dc->hatch_spacing) * Geom::Translate(c));
sp_canvas_item_affine_absolute(dc->hatch_area, sm);
sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->hatch_area), 0x00FF00ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
sp_canvas_item_show(dc->hatch_area);
} else if (dc->dragging && dc->hatch_escaped) {
// Tracking escaped: red, center free, fixed radius
- NR::Point c = desktop->w2d(motion_w);
- NR::Matrix const sm (NR::scale(dc->hatch_spacing, dc->hatch_spacing) * NR::translate(c));
+ Geom::Point c = motion_dt;
+ Geom::Matrix const sm (Geom::Scale(dc->hatch_spacing, dc->hatch_spacing) * Geom::Translate(c));
sp_canvas_item_affine_absolute(dc->hatch_area, sm);
sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->hatch_area), 0xFF0000ff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
sp_canvas_item_show(dc->hatch_area);
} else {
// Not drawing but spacing set: gray, center snapped, fixed radius
- NR::Point c = (nearest + dc->hatch_spacing * hatch_unit_vector) * motion_to_curve.inverse();
- if (!IS_NAN(c[NR::X]) && !IS_NAN(c[NR::Y])) {
- NR::Matrix const sm (NR::scale(dc->hatch_spacing, dc->hatch_spacing) * NR::translate(c));
+ Geom::Point c = (nearest + dc->hatch_spacing * hatch_unit_vector) * motion_to_curve.inverse();
+ if (!IS_NAN(c[Geom::X]) && !IS_NAN(c[Geom::Y])) {
+ Geom::Matrix const sm (Geom::Scale(dc->hatch_spacing, dc->hatch_spacing) * Geom::Translate(c));
sp_canvas_item_affine_absolute(dc->hatch_area, sm);
sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->hatch_area), 0x7f7f7fff, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
sp_canvas_item_show(dc->hatch_area);
case GDK_BUTTON_RELEASE:
{
- NR::Point const motion_w(event->button.x, event->button.y);
- NR::Point const motion_dt(desktop->w2d(motion_w));
+ Geom::Point const motion_w(event->button.x, event->button.y);
+ Geom::Point const motion_dt(desktop->w2d(motion_w));
sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time);
sp_canvas_end_forced_full_redraws(desktop->canvas);
/* 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, event->button.state & GDK_MOD1_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();
if (!dc->hatch_pointer_past.empty()) dc->hatch_pointer_past.clear();
if (!dc->hatch_nearest_past.empty()) dc->hatch_nearest_past.clear();
- dc->hatch_last_nearest = NR::Point(0,0);
- dc->hatch_last_pointer = NR::Point(0,0);
- dc->hatch_vector_accumulated = NR::Point(0,0);
+ if (!dc->inertia_vectors.empty()) dc->inertia_vectors.clear();
+ if (!dc->hatch_vectors.empty()) dc->hatch_vectors.clear();
+ dc->hatch_last_nearest = Geom::Point(0,0);
+ dc->hatch_last_pointer = Geom::Point(0,0);
dc->hatch_escaped = false;
dc->hatch_item = NULL;
dc->hatch_livarot_path = NULL;
+ dc->just_started_drawing = false;
- if (dc->hatch_spacing != 0 && !dc->keep_selected) {
+ if (dc->hatch_spacing != 0 && !dc->keep_selected) {
// we do not select the newly drawn path, so increase spacing by step
if (dc->hatch_spacing_step == 0) {
dc->hatch_spacing_step = dc->hatch_spacing;
}
static void
-set_to_accumulated(SPDynaDrawContext *dc, bool unionize)
+set_to_accumulated(SPDynaDrawContext *dc, bool unionize, bool subtract)
{
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());
+ Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
/* Set style */
- sp_desktop_apply_style_tool (desktop, repr, "tools.calligraphic", false);
+ sp_desktop_apply_style_tool (desktop, repr, "/tools/calligraphic", false);
dc->repr = repr;
SPItem *item=SP_ITEM(desktop->currentLayer()->appendChildRepr(dc->repr));
Inkscape::GC::release(dc->repr);
- item->transform = SP_ITEM(desktop->currentRoot())->getRelativeTransform(desktop->currentLayer());
+ item->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
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() * desktop->dt2doc();
+ gchar *str = sp_svg_write_path(pathv);
g_assert( str != NULL );
- g_free(abp);
dc->repr->setAttribute("d", str);
g_free(str);
if (unionize) {
sp_desktop_selection(desktop)->add(dc->repr);
- sp_selected_path_union_skip_undo();
+ sp_selected_path_union_skip_undo(desktop);
+ } else if (subtract) {
+ sp_desktop_selection(desktop)->add(dc->repr);
+ sp_selected_path_diff_skip_undo(desktop);
} else {
if (dc->keep_selected) {
sp_desktop_selection(desktop)->set(dc->repr);
- }
+ }
}
} else {
dc->repr = NULL;
}
- sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_CALLIGRAPHIC,
- _("Draw calligraphic stroke"));
+ DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_CONTEXT_CALLIGRAPHIC,
+ _("Draw calligraphic stroke"));
}
static void
add_cap(SPCurve *curve,
- NR::Point const &pre, NR::Point const &from,
- NR::Point const &to, NR::Point const &post,
+ Geom::Point const &from,
+ Geom::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);
- }
+ if (Geom::L2( to - from ) > DYNA_EPSILON) {
+ Geom::Point vel = rounding * Geom::rot90( to - from ) / sqrt(2.0);
+ double mag = Geom::L2(vel);
- 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(v_in) > DYNA_EPSILON || NR::L2(v_out) > DYNA_EPSILON ) {
- curve->curveto(from + v_in, to + v_out, to);
+ Geom::Point v = mag * Geom::rot90( to - from ) / Geom::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)
static void
fit_and_split(SPDynaDrawContext *dc, gboolean release)
{
- double const tolerance_sq = square( NR::expansion(SP_EVENT_CONTEXT(dc)->desktop->w2d()) * TOLERANCE_CALLIGRAPHIC );
+ SPDesktop *desktop = SP_EVENT_CONTEXT(dc)->desktop;
+
+ double const tolerance_sq = square( desktop->w2d().descrim() * TOLERANCE_CALLIGRAPHIC );
#ifdef DYNA_DRAW_VERBOSE
g_print("[F&S:R=%c]", release?'T':'F');
#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->cal2->moveto(dc->point2[0]);
}
- NR::Point b1[BEZIER_MAX_LENGTH];
- gint const nb1 = sp_bezier_fit_cubic_r(b1, dc->point1, dc->npoints,
+ Geom::Point b1[BEZIER_MAX_LENGTH];
+ gint const nb1 = Geom::bezier_fit_cubic_r(b1, dc->point1, dc->npoints,
tolerance_sq, BEZIER_MAX_BEZIERS);
g_assert( nb1 * BEZIER_SIZE <= gint(G_N_ELEMENTS(b1)) );
- NR::Point b2[BEZIER_MAX_LENGTH];
- gint const nb2 = sp_bezier_fit_cubic_r(b2, dc->point2, dc->npoints,
+ Geom::Point b2[BEZIER_MAX_LENGTH];
+ gint const nb2 = Geom::bezier_fit_cubic_r(b2, dc->point2, dc->npoints,
tolerance_sq, BEZIER_MAX_BEZIERS);
g_assert( nb2 * BEZIER_SIZE <= gint(G_N_ELEMENTS(b2)) );
if (! release) {
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]);
+ for (Geom::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
+ 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) {
+ for (Geom::Point *bp2 = b2 + BEZIER_SIZE * ( nb2 - 1 ); bp2 >= b2; bp2 -= BEZIER_SIZE) {
dc->currentcurve->curveto(bp2[2], bp2[1], bp2[0]);
}
// 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);
}
/* Current calligraphic */
- for (NR::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
+ for (Geom::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
dc->cal1->curveto(bp1[1], bp1[2], bp1[3]);
}
- for (NR::Point *bp2 = b2; bp2 < b2 + BEZIER_SIZE * nb2; bp2 += BEZIER_SIZE) {
+ for (Geom::Point *bp2 = b2; bp2 < b2 + BEZIER_SIZE * nb2; bp2 += BEZIER_SIZE) {
dc->cal2->curveto(bp2[1], bp2[2], bp2[3]);
}
} else {
if (!release) {
g_assert(!dc->currentcurve->is_empty());
- SPCanvasItem *cbp = sp_canvas_item_new(sp_desktop_sketch(SP_EVENT_CONTEXT(dc)->desktop),
+ SPCanvasItem *cbp = sp_canvas_item_new(sp_desktop_sketch(desktop),
SP_TYPE_CANVAS_BPATH,
NULL);
SPCurve *curve = dc->currentcurve->copy();
sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH (cbp), curve);
curve->unref();
- guint32 fillColor = sp_desktop_get_color_tool (SP_ACTIVE_DESKTOP, "tools.calligraphic", true);
- //guint32 strokeColor = sp_desktop_get_color_tool (SP_ACTIVE_DESKTOP, "tools.calligraphic", false);
- double opacity = sp_desktop_get_master_opacity_tool (SP_ACTIVE_DESKTOP, "tools.calligraphic");
- double fillOpacity = sp_desktop_get_opacity_tool (SP_ACTIVE_DESKTOP, "tools.calligraphic", true);
- //double strokeOpacity = sp_desktop_get_opacity_tool (SP_ACTIVE_DESKTOP, "tools.calligraphic", false);
+ guint32 fillColor = sp_desktop_get_color_tool (desktop, "/tools/calligraphic", true);
+ //guint32 strokeColor = sp_desktop_get_color_tool (desktop, "/tools/calligraphic", false);
+ double opacity = sp_desktop_get_master_opacity_tool (desktop, "/tools/calligraphic");
+ double fillOpacity = sp_desktop_get_opacity_tool (desktop, "/tools/calligraphic", true);
+ //double strokeOpacity = sp_desktop_get_opacity_tool (desktop, "/tools/calligraphic", false);
sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(cbp), ((fillColor & 0xffffff00) | SP_COLOR_F_TO_U(opacity*fillOpacity)), SP_WIND_RULE_EVENODD);
//on second thougtht don't do stroke yet because we don't have stoke-width yet and because stoke appears between segments while drawing
//sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cbp), ((strokeColor & 0xffffff00) | SP_COLOR_F_TO_U(opacity*strokeOpacity)), 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cbp), 0x00000000, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
/* fixme: Cannot we cascade it to root more clearly? */
- g_signal_connect(G_OBJECT(cbp), "event", G_CALLBACK(sp_desktop_root_handler), SP_EVENT_CONTEXT(dc)->desktop);
+ g_signal_connect(G_OBJECT(cbp), "event", G_CALLBACK(sp_desktop_root_handler), desktop);
dc->segments = g_slist_prepend(dc->segments, cbp);
}
{
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();
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :