void
RegisteredTransformedPoint::setTransform(Geom::Affine const & canvas_to_svg)
{
// check if matrix is singular / has inverse
if ( ! canvas_to_svg.isSingular() ) {
to_svg = canvas_to_svg;
} else {
// set back to default
to_svg = Geom::identity();
}
}
Geom::Point
KnotHolderEntity::snap_knot_position_constrained(Geom::Point const &p, Inkscape::Snapper::SnapConstraint const &constraint, guint state)
{
if (state & GDK_SHIFT_MASK) { // Don't snap when shift-key is held
return p;
}
Geom::Affine const i2d (item->i2dt_affine());
Geom::Point s = p * i2d;
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop, true, item);
// constrainedSnap() will first project the point p onto the constraint line and then try to snap along that line.
// This way the constraint is already enforced, no need to worry about that later on
Inkscape::Snapper::SnapConstraint transformed_constraint = Inkscape::Snapper::SnapConstraint(constraint.getPoint() * i2d, (constraint.getPoint() + constraint.getDirection()) * i2d - constraint.getPoint() * i2d);
m.constrainedSnapReturnByRef(s, Inkscape::SNAPSOURCE_NODE_HANDLE, transformed_constraint);
m.unSetup();
return s * i2d.inverse();
}
Geom::OptRect SPFlowtext::bbox(Geom::Affine const &transform, SPItem::BBoxType type) const {
Geom::OptRect bbox = this->layout.bounds(transform);
// Add stroke width
// FIXME this code is incorrect
if (bbox && type == SPItem::VISUAL_BBOX && !this->style->stroke.isNone()) {
double scale = transform.descrim();
bbox->expandBy(0.5 * this->style->stroke_width.computed * scale);
}
return bbox;
}
Geom::Affine SPStar::set_transform(Geom::Affine const &xform)
{
// Only set transform with proportional scaling
if (!xform.withoutTranslation().isUniformScale()) {
return xform;
}
// Allow live effects
if (hasPathEffect() && pathEffectsEnabled()) {
return xform;
}
/* Calculate star start in parent coords. */
Geom::Point pos( this->center * xform );
/* This function takes care of translation and scaling, we return whatever parts we can't
handle. */
Geom::Affine ret(Geom::Affine(xform).withoutTranslation());
gdouble const s = hypot(ret[0], ret[1]);
if (s > 1e-9) {
ret[0] /= s;
ret[1] /= s;
ret[2] /= s;
ret[3] /= s;
} else {
ret[0] = 1.0;
ret[1] = 0.0;
ret[2] = 0.0;
ret[3] = 1.0;
}
this->r[0] *= s;
this->r[1] *= s;
/* Find start in item coords */
pos = pos * ret.inverse();
this->center = pos;
this->set_shape();
// Adjust stroke width
this->adjust_stroke(s);
// Adjust pattern fill
this->adjust_pattern(xform * ret.inverse());
// Adjust gradient fill
this->adjust_gradient(xform * ret.inverse());
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return ret;
}
Geom::Affine SPFlowtext::set_transform (Geom::Affine const &xform)
{
if ((this->_optimizeScaledText && !xform.withoutTranslation().isNonzeroUniformScale())
|| (!this->_optimizeScaledText && !xform.isNonzeroUniformScale())) {
this->_optimizeScaledText = false;
return xform;
}
this->_optimizeScaledText = false;
SPText *text = reinterpret_cast<SPText *>(this);
double const ex = xform.descrim();
if (ex == 0) {
return xform;
}
Geom::Affine ret(xform);
ret[0] /= ex;
ret[1] /= ex;
ret[2] /= ex;
ret[3] /= ex;
// Adjust font size
text->_adjustFontsizeRecursive (this, ex);
// Adjust stroke width
this->adjust_stroke_width_recursive (ex);
// Adjust pattern fill
this->adjust_pattern(xform * ret.inverse());
// Adjust gradient fill
this->adjust_gradient(xform * ret.inverse());
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG);
return ret;
}
void SPClipPath::update(SPCtx* ctx, unsigned int flags) {
if (flags & SP_OBJECT_MODIFIED_FLAG) {
flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
}
flags &= SP_OBJECT_MODIFIED_CASCADE;
GSList *l = NULL;
for ( SPObject *child = this->firstChild(); child; child = child->getNext()) {
sp_object_ref(child);
l = g_slist_prepend(l, child);
}
l = g_slist_reverse(l);
while (l) {
SPObject *child = SP_OBJECT(l->data);
l = g_slist_remove(l, child);
if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
child->updateDisplay(ctx, flags);
}
sp_object_unref(child);
}
for (SPClipPathView *v = this->display; v != NULL; v = v->next) {
Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);
if (this->clipPathUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX && v->bbox) {
Geom::Affine t = Geom::Scale(v->bbox->dimensions());
t.setTranslation(v->bbox->min());
g->setChildTransform(t);
} else {
g->setChildTransform(Geom::identity());
}
}
}
void
sp_gradient_set_gs2d_matrix(SPGradient *gr, Geom::Affine const &ctm,
Geom::Rect const &bbox, Geom::Affine const &gs2d)
{
gr->gradientTransform = gs2d * ctm.inverse();
if (gr->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX ) {
gr->gradientTransform = ( gr->gradientTransform
* Geom::Translate(-bbox.min())
* Geom::Scale(bbox.dimensions()).inverse() );
}
gr->gradientTransform_set = TRUE;
gr->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
static void sp_offset_move_compensate(Geom::Affine const *mp, SPItem */*original*/, SPOffset *self)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
Geom::Affine m(*mp);
if (!(m.isTranslation()) || mode == SP_CLONE_COMPENSATION_NONE) {
self->sourceDirty=true;
self->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
return;
}
// calculate the compensation matrix and the advertized movement matrix
self->readAttr("transform");
Geom::Affine t = self->transform;
Geom::Affine offset_move = t.inverse() * m * t;
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
offset_move = offset_move.inverse() * m;
advertized_move = m;
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
offset_move = offset_move.inverse();
advertized_move.setIdentity();
} else {
g_assert_not_reached();
}
self->sourceDirty=true;
// commit the compensation
self->transform *= offset_move;
self->doWriteTransform(self->getRepr(), self->transform, &advertized_move);
self->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
/**
* Set additional transform for the group.
* This is applied after the normal transform and mainly useful for
* markers, clipping paths, etc.
*/
void
DrawingGroup::setChildTransform(Geom::Affine const &new_trans)
{
Geom::Affine current;
if (_child_transform) {
current = *_child_transform;
}
if (!Geom::are_near(current, new_trans, 1e-18)) {
// mark the area where the object was for redraw.
_markForRendering();
if (new_trans.isIdentity()) {
delete _child_transform; // delete NULL; is safe
_child_transform = NULL;
} else {
_child_transform = new Geom::Affine(new_trans);
}
_markForUpdate(STATE_ALL, true);
}
}
Geom::Affine SPLine::set_transform(Geom::Affine const &transform) {
Geom::Point points[2];
points[0] = Geom::Point(this->x1.computed, this->y1.computed);
points[1] = Geom::Point(this->x2.computed, this->y2.computed);
points[0] *= transform;
points[1] *= transform;
this->x1.computed = points[0][Geom::X];
this->y1.computed = points[0][Geom::Y];
this->x2.computed = points[1][Geom::X];
this->y2.computed = points[1][Geom::Y];
this->adjust_stroke(transform.descrim());
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return Geom::identity();
}
/**
* Writes the given transform into the repr for the given item.
*/
static Geom::Affine
sp_path_set_transform(SPItem *item, Geom::Affine const &xform)
{
if (!SP_IS_PATH(item)) {
return Geom::identity();
}
SPPath *path = SP_PATH(item);
if (!path->_curve) { // 0 nodes, nothing to transform
return Geom::identity();
}
// Transform the original-d path if this is a valid LPE item, other else the (ordinary) path
if (path->_curve_before_lpe && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(item))) {
if (sp_lpe_item_has_path_effect_of_type(SP_LPE_ITEM(item), Inkscape::LivePathEffect::CLONE_ORIGINAL)) {
// if path has the CLONE_ORIGINAL LPE applied, don't write the transform to the pathdata, but write it 'unoptimized'
return xform;
} else {
path->_curve_before_lpe->transform(xform);
}
} else {
path->_curve->transform(xform);
}
// Adjust stroke
item->adjust_stroke(xform.descrim());
// Adjust pattern fill
item->adjust_pattern(xform);
// Adjust gradient fill
item->adjust_gradient(xform);
// Adjust LPE
item->adjust_livepatheffect(xform);
item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
// nothing remains - we've written all of the transform, so return identity
return Geom::identity();
}
Geom::Affine SPLine::setTransform(SPItem *item, Geom::Affine const &xform)
{
SPLine *line = SP_LINE(item);
Geom::Point points[2];
points[0] = Geom::Point(line->x1.computed, line->y1.computed);
points[1] = Geom::Point(line->x2.computed, line->y2.computed);
points[0] *= xform;
points[1] *= xform;
line->x1.computed = points[0][Geom::X];
line->y1.computed = points[0][Geom::Y];
line->x2.computed = points[1][Geom::X];
line->y2.computed = points[1][Geom::Y];
item->adjust_stroke(xform.descrim());
SP_OBJECT(item)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return Geom::identity();
}
static gdouble sp_pattern_extract_theta(SPPattern *pat)
{
Geom::Affine transf = pat->patternTransform;
return Geom::atan2(transf.xAxis());
}
/**
* Sensing a movement of the original, this function attempts to compensate for it in such a way
* that the clone stays unmoved or moves in parallel (depending on user setting) regardless of the
* clone's transform.
*/
void SPUse::move_compensate(Geom::Affine const *mp) {
// the clone is orphaned; or this is not a real use, but a clone of another use;
// we skip it, otherwise duplicate compensation will occur
if (this->cloned) {
return;
}
// never compensate uses which are used in flowtext
if (parent && dynamic_cast<SPFlowregion *>(parent)) {
return;
}
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
// user wants no compensation
if (mode == SP_CLONE_COMPENSATION_NONE)
return;
Geom::Affine m(*mp);
Geom::Affine t = this->get_parent_transform();
Geom::Affine clone_move = t.inverse() * m * t;
// this is not a simple move, do not try to compensate
if (!(m.isTranslation())){
//BUT move clippaths accordingly.
//if clone has a clippath, move it accordingly
if(clip_ref->getObject()){
SPObject *clip = clip_ref->getObject()->firstChild() ;
while(clip){
SPItem *item = (SPItem*) clip;
if(item){
item->transform *= m;
Geom::Affine identity;
item->doWriteTransform(clip->getRepr(),item->transform, &identity);
}
clip = clip->getNext();
}
}
if(mask_ref->getObject()){
SPObject *mask = mask_ref->getObject()->firstChild() ;
while(mask){
SPItem *item = (SPItem*) mask;
if(item){
item->transform *= m;
Geom::Affine identity;
item->doWriteTransform(mask->getRepr(),item->transform, &identity);
}
mask = mask->getNext();
}
}
return;
}
// restore item->transform field from the repr, in case it was changed by seltrans
this->readAttr ("transform");
// calculate the compensation matrix and the advertized movement matrix
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
clone_move = clone_move.inverse() * m;
advertized_move = m;
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
clone_move = clone_move.inverse();
advertized_move.setIdentity();
} else {
g_assert_not_reached();
}
//if clone has a clippath, move it accordingly
if(clip_ref->getObject()){
SPObject *clip = clip_ref->getObject()->firstChild() ;
while(clip){
SPItem *item = (SPItem*) clip;
if(item){
item->transform *= clone_move.inverse();
Geom::Affine identity;
item->doWriteTransform(clip->getRepr(),item->transform, &identity);
}
clip = clip->getNext();
}
}
if(mask_ref->getObject()){
SPObject *mask = mask_ref->getObject()->firstChild() ;
while(mask){
SPItem *item = (SPItem*) mask;
if(item){
item->transform *= clone_move.inverse();
Geom::Affine identity;
item->doWriteTransform(mask->getRepr(),item->transform, &identity);
}
mask = mask->getNext();
}
}
// commit the compensation
this->transform *= clone_move;
this->doWriteTransform(this->getRepr(), this->transform, &advertized_move);
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
void draw(cairo_t *cr,
std::ostringstream *notify,
int width, int height, bool save, std::ostringstream *timer_stream) {
if (first_time)
{
first_time = false;
sliders[0].geometry(Point(50, 50), 100);
}
size_t const num_points = static_cast<size_t>(sliders[0].value());
D2<SBasis> B1 = b_handle.asBezier();
Piecewise<D2<SBasis> >B;
B.concat(Piecewise<D2<SBasis> >(B1));
// testing fuse_nearby_ends
std::vector< Piecewise<D2<SBasis> > > pieces;
pieces = fuse_nearby_ends(split_at_discontinuities(B),9);
Piecewise<D2<SBasis> > C;
for (unsigned i=0; i<pieces.size(); i++){
C.concat(pieces[i]);
}
// testing fuse_nearby_ends
cairo_set_line_width (cr, 2.);
cairo_set_source_rgba (cr, 0., 0.5, 0., 1);
//cairo_d2_sb(cr, B1);
//cairo_pw_d2_sb(cr, C);
//cairo_pw_d2_sb(cr, B);
cairo_stroke(cr);
Timer tm;
Timer::Time als_time = tm.lap();
cairo_set_source_rgba (cr, 0., 0., 0.9, 1);
//dot_plot(cr,uniform_B);
cairo_stroke(cr);
std::cout << B[0] << std::endl;
Geom::Affine translation;
Geom::Path original_path;
//original_bezier.append(B[0]);
//original_bezier.appendNew<CubicBezier> (B[0]);
CubicBezier original_bezier(b_handle.pts);
original_path.append(original_bezier);
std::vector<double> initial_t;
std::vector<Geom::Point> curve_points;
if (randomize_times) {
std::uniform_real_distribution<double> dist_t(0,1);
for (size_t ii = 0; ii < num_points; ++ii) {
double const t = dist_t(generator);
initial_t.push_back(t);
}
std::sort(initial_t.begin(), initial_t.end());
double const min = initial_t.front();
double const max = initial_t.back();
for (auto& t : initial_t) {
t = (t-min)/(max-min);
}
for (auto const t : initial_t) {
curve_points.push_back(original_bezier.pointAt(t));
}
}
else {
for (size_t ii = 0; ii < num_points; ++ii) {
double const t = static_cast<double>(ii) / (num_points-1);
Geom::Point const p = original_bezier.pointAt(t);
initial_t.push_back(t);
curve_points.push_back(p);
}
}
cairo_set_source_rgba (cr, 0., 0., .9, 1);
cairo_path(cr, original_path);
draw_text(cr, original_path.initialPoint(), "original curve and old fit");
Geom::CubicBezier fitted_new;
Geom::CubicBezier fitted_new_a;
Geom::Point very_old_version_raw[4];
bezier_fit_cubic(very_old_version_raw, curve_points.data(), curve_points.size(), 0.);
Geom::CubicBezier very_old_bezier(
very_old_version_raw[0],
very_old_version_raw[1],
very_old_version_raw[2],
very_old_version_raw[3]
);
Geom::Path very_old_version_path;
very_old_version_path.append(very_old_bezier);
cairo_set_source_rgba (cr, .7, .7, 0., 1);
cairo_stroke(cr);
cairo_path(cr, very_old_version_path);
cairo_set_source_rgba (cr, 0., 0., .9, 1);
cairo_stroke(cr);
cross_plot(cr, curve_points);
if(1) {
Geom::CubicBezier combination(very_old_bezier);
tm.ask_for_timeslice();
tm.start();
auto new_result_ig_a = experiment::fit_bezier(combination, curve_points);
als_time = tm.lap();
*notify << "Bezier fit a, old algorithm as initial guess, time = " << als_time << std::endl
<< "Worst residual: " << new_result_ig_a.first << " at t=" << new_result_ig_a.second << std::endl;
Geom::Path combination_path;
translation.setTranslation(Geom::Point(300,300));
combination_path.append(combination.transformed(translation));
cairo_set_source_rgba (cr, .0, .0, .9, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, combination_path);
draw_text(cr, combination_path.initialPoint(), "old fit as i.g.");
}
{
tm.ask_for_timeslice();
tm.start();
auto new_result = fit_bezier(fitted_new, curve_points);
als_time = tm.lap();
*notify << "Bezier fit, time = " << als_time << std::endl
<< "Worst residual: " << new_result.first << " at t=" << new_result.second << std::endl;
Geom::Path fitted_new_path;
translation.setTranslation(Geom::Point(300,0));
fitted_new_path.append(fitted_new.transformed(translation));
cairo_set_source_rgba (cr, .0, .9, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, fitted_new_path);
draw_text(cr, fitted_new_path.initialPoint(), "new fit");
}
{
tm.ask_for_timeslice();
tm.start();
auto new_result_a = experiment::fit_bezier(fitted_new_a, curve_points);
als_time = tm.lap();
*notify << "Bezier fit a, time = " << als_time << std::endl
<< "Worst residual: " << new_result_a.first << " at t=" << new_result_a.second << std::endl;
Geom::Path fitted_new_a_path;
translation.setTranslation(Geom::Point(0,300));
fitted_new_a_path.append(fitted_new_a.transformed(translation));
cairo_set_source_rgba (cr, .9, .0, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, fitted_new_a_path);
draw_text(cr, fitted_new_a_path.initialPoint(), "new fit (a)");
}
Geom::CubicBezier fixed_times_bezier;
{
tm.ask_for_timeslice();
tm.start();
auto fixed_times_result = experiment::fit_bezier_fixed_times(fixed_times_bezier, curve_points);
als_time = tm.lap();
*notify << "Bezier fit a (fixed times), time = " << als_time << std::endl
<< "Worst residual: " << fixed_times_result.first << " at t=" << fixed_times_result.second << std::endl;
Geom::Path fixed_times_path;
translation.setTranslation(Geom::Point(600,300));
fixed_times_path.append(fixed_times_bezier.transformed(translation));
cairo_set_source_rgba (cr, .9, .0, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, fixed_times_path);
draw_text(cr, fixed_times_path.initialPoint(), "fixed t fit (a)");
}
Geom::CubicBezier fixed_times_ig_bezier = fixed_times_bezier;
{
tm.ask_for_timeslice();
tm.start();
auto fixed_times_ig_result = experiment::fit_bezier(fixed_times_ig_bezier, curve_points);
als_time = tm.lap();
*notify << "Bezier fit a (with fixed times as i.g.), time = " << als_time << std::endl
<< "Worst residual: " << fixed_times_ig_result.first << " at t=" << fixed_times_ig_result.second << std::endl;
Geom::Path fixed_times_path;
translation.setTranslation(Geom::Point(900,300));
fixed_times_path.append(fixed_times_ig_bezier.transformed(translation));
cairo_set_source_rgba (cr, .9, .0, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, fixed_times_path);
draw_text(cr, fixed_times_path.initialPoint(), "new (a) with fixed t as i.g.");
}
Geom::CubicBezier icp_bezier;
{
tm.ask_for_timeslice();
tm.start();
auto icp_result = experiment::fit_bezier_icp(icp_bezier, curve_points);
als_time = tm.lap();
*notify << "Bezier fit icp, time = " << als_time << std::endl
<< "Worst residual: " << icp_result.first << " at t=" << icp_result.second << std::endl;
Geom::Path icp_path;
translation.setTranslation(Geom::Point(600,600));
icp_path.append(icp_bezier.transformed(translation));
cairo_set_source_rgba (cr, .9, .0, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, icp_path);
draw_text(cr, icp_path.initialPoint(), "icp fit");
}
Geom::CubicBezier icp_ig_bezier(icp_bezier);
{
tm.ask_for_timeslice();
tm.start();
auto icp_ig_result = experiment::fit_bezier(icp_ig_bezier, curve_points);
als_time = tm.lap();
*notify << "Bezier fit with icp i.g., time = " << als_time << std::endl
<< "Worst residual: " << icp_ig_result.first << " at t=" << icp_ig_result.second << std::endl;
Geom::Path icp_ig_path;
translation.setTranslation(Geom::Point(900,600));
icp_ig_path.append(icp_ig_bezier.transformed(translation));
cairo_set_source_rgba (cr, .9, .0, .0, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, icp_ig_path);
draw_text(cr, icp_ig_path.initialPoint(), "bezier fit with icp as i.g.");
}
std::cout << "original: " << write_svg_path(original_path) << std::endl;
Geom::CubicBezier initial_guess(
curve_points.front(), curve_points.front(),
curve_points.back(), curve_points.back()
);
{
experiment::get_initial_guess(initial_guess, curve_points);
Geom::Path initial_guess_path;
translation.setTranslation(Geom::Point(600,0));
initial_guess_path.append(initial_guess.transformed(translation));
cairo_set_source_rgba (cr, .8, .0, .8, 1);
cross_plot(cr, curve_points, translation.translation());
cairo_path(cr, initial_guess_path);
draw_text(cr, initial_guess_path.initialPoint(), "initial guess");
}
cairo_stroke(cr);
Toy::draw(cr, notify, width, height, save,timer_stream);
}
Geom::OptRect SPShape::bbox(Geom::Affine const &transform, SPItem::BBoxType bboxtype) const {
Geom::OptRect bbox;
if (!this->_curve) {
return bbox;
}
bbox = bounds_exact_transformed(this->_curve->get_pathvector(), transform);
if (!bbox) {
return bbox;
}
if (bboxtype == SPItem::VISUAL_BBOX) {
// convert the stroke to a path and calculate that path's geometric bbox
if (!this->style->stroke.isNone()) {
Geom::PathVector *pathv = item_outline(this, true); // calculate bbox_only
if (pathv) {
bbox |= bounds_exact_transformed(*pathv, transform);
delete pathv;
}
}
// Union with bboxes of the markers, if any
if ( this->hasMarkers() && !this->_curve->get_pathvector().empty() ) {
/** \todo make code prettier! */
Geom::PathVector const & pathv = this->_curve->get_pathvector();
// START marker
for (unsigned i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START
if ( this->_marker[i] ) {
SPItem* marker_item = sp_item_first_item_child( _marker[i] );
if (marker_item) {
Geom::Affine tr(sp_shape_marker_get_transform_at_start(pathv.begin()->front()));
if (_marker[i]->orient_mode == MARKER_ORIENT_AUTO_START_REVERSE) {
// Reverse start marker if necessary
tr = Geom::Rotate::from_degrees( 180.0 ) * tr;
} else if (_marker[i]->orient_mode == MARKER_ORIENT_ANGLE) {
Geom::Point transl = tr.translation();
tr = Geom::Rotate::from_degrees(_marker[i]->orient) * Geom::Translate(transl);
}
if (_marker[i]->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
tr = Geom::Scale(this->style->stroke_width.computed) * tr;
}
// total marker transform
tr = marker_item->transform * _marker[i]->c2p * tr * transform;
// get bbox of the marker with that transform
bbox |= marker_item->visualBounds(tr);
}
}
}
// MID marker
for (unsigned i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID
if ( !this->_marker[i] ) {
continue;
}
SPMarker* marker = _marker[i];
SPItem* marker_item = sp_item_first_item_child( marker );
if ( !marker_item ) {
continue;
}
for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
// START position
if ( path_it != pathv.begin()
&& ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)) ) // if this is the last path and it is a moveto-only, there is no mid marker there
{
Geom::Affine tr(sp_shape_marker_get_transform_at_start(path_it->front()));
if (marker->orient_mode == MARKER_ORIENT_ANGLE) {
Geom::Point transl = tr.translation();
tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(transl);
}
if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
tr = Geom::Scale(this->style->stroke_width.computed) * tr;
}
tr = marker_item->transform * marker->c2p * tr * transform;
bbox |= marker_item->visualBounds(tr);
}
// MID position
if ( path_it->size_default() > 1) {
Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
while (curve_it2 != path_it->end_default())
{
/* Put marker between curve_it1 and curve_it2.
* Loop to end_default (so including closing segment), because when a path is closed,
* there should be a midpoint marker between last segment and closing straight line segment */
SPMarker* marker = _marker[i];
SPItem* marker_item = sp_item_first_item_child( marker );
if (marker_item) {
Geom::Affine tr(sp_shape_marker_get_transform(*curve_it1, *curve_it2));
if (marker->orient_mode == MARKER_ORIENT_ANGLE) {
Geom::Point transl = tr.translation();
tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(transl);
}
if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
tr = Geom::Scale(this->style->stroke_width.computed) * tr;
}
tr = marker_item->transform * marker->c2p * tr * transform;
bbox |= marker_item->visualBounds(tr);
}
++curve_it1;
++curve_it2;
}
}
// END position
if ( path_it != (pathv.end()-1) && !path_it->empty()) {
Geom::Curve const &lastcurve = path_it->back_default();
Geom::Affine tr = sp_shape_marker_get_transform_at_end(lastcurve);
if (marker->orient_mode == MARKER_ORIENT_ANGLE) {
Geom::Point transl = tr.translation();
tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(transl);
}
if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
tr = Geom::Scale(this->style->stroke_width.computed) * tr;
}
tr = marker_item->transform * marker->c2p * tr * transform;
bbox |= marker_item->visualBounds(tr);
}
}
}
// END marker
for (unsigned i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END
if ( _marker[i] ) {
SPMarker* marker = _marker[i];
SPItem* marker_item = sp_item_first_item_child( marker );
if (marker_item) {
/* Get reference to last curve in the path.
* For moveto-only path, this returns the "closing line segment". */
Geom::Path const &path_last = pathv.back();
unsigned int index = path_last.size_default();
if (index > 0) {
index--;
}
Geom::Curve const &lastcurve = path_last[index];
Geom::Affine tr = sp_shape_marker_get_transform_at_end(lastcurve);
if (marker->orient_mode == MARKER_ORIENT_ANGLE) {
Geom::Point transl = tr.translation();
tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(transl);
}
if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
tr = Geom::Scale(this->style->stroke_width.computed) * tr;
}
// total marker transform
tr = marker_item->transform * marker->c2p * tr * transform;
// get bbox of the marker with that transform
bbox |= marker_item->visualBounds(tr);
}
}
}
}
}
return bbox;
}
void
sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
{
g_return_if_fail (group != NULL);
g_return_if_fail (SP_IS_GROUP (group));
SPDocument *doc = group->document;
SPRoot *root = doc->getRoot();
SPObject *defs = root->defs;
SPItem *gitem = group;
Inkscape::XML::Node *grepr = gitem->getRepr();
g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
// this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
gitem->adjust_paint_recursive (Geom::identity(), Geom::identity(), false);
SPItem *pitem = SP_ITEM(gitem->parent);
Inkscape::XML::Node *prepr = pitem->getRepr();
if (SP_IS_BOX3D(gitem)) {
group = box3d_convert_to_group(SP_BOX3D(gitem));
gitem = group;
}
sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
/* Step 1 - generate lists of children objects */
GSList *items = NULL;
GSList *objects = NULL;
for (SPObject *child = group->firstChild() ; child; child = child->getNext() ) {
if (SP_IS_ITEM (child)) {
SPItem *citem = SP_ITEM (child);
/* Merging of style */
// this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
// it here _before_ the new transform is set, so as to use the pre-transform bbox
citem->adjust_paint_recursive (Geom::identity(), Geom::identity(), false);
sp_style_merge_from_dying_parent(child->style, gitem->style);
/*
* fixme: We currently make no allowance for the case where child is cloned
* and the group has any style settings.
*
* (This should never occur with documents created solely with the current
* version of inkscape without using the XML editor: we usually apply group
* style changes to children rather than to the group itself.)
*
* If the group has no style settings, then
* sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
* we change the child's style to compensate for its parent going away)
* then those changes will typically be reflected in any clones of child,
* whereas we'd prefer for Ungroup not to affect the visual appearance.
*
* The only way of preserving styling appearance in general is for child to
* be put into a new group -- a somewhat surprising response to an Ungroup
* command. We could add a new groupmode:transparent that would mostly
* hide the existence of such groups from the user (i.e. editing behaves as
* if the transparent group's children weren't in a group), though that's
* extra complication & maintenance burden and this case is rare.
*/
child->updateRepr();
Inkscape::XML::Node *nrepr = child->getRepr()->duplicate(prepr->document());
// Merging transform
Geom::Affine ctrans;
Geom::Affine const g(gitem->transform);
if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
sp_use_get_original( SP_USE(citem) )->parent == SP_OBJECT(group)) {
// make sure a clone's effective transform is the same as was under group
ctrans = g.inverse() * citem->transform * g;
} else {
// We should not apply the group's transformation to both a linked offset AND to its source
if (SP_IS_OFFSET(citem)) { // Do we have an offset at hand (whether it's dynamic or linked)?
SPItem *source = sp_offset_get_source(SP_OFFSET(citem));
// When dealing with a chain of linked offsets, the transformation of an offset will be
// tied to the transformation of the top-most source, not to any of the intermediate
// offsets. So let's find the top-most source
while (source != NULL && SP_IS_OFFSET(source)) {
source = sp_offset_get_source(SP_OFFSET(source));
}
if (source != NULL && // If true then we must be dealing with a linked offset ...
group->isAncestorOf(source) == false) { // ... of which the source is not in the same group
ctrans = citem->transform * g; // then we should apply the transformation of the group to the offset
} else {
ctrans = citem->transform;
}
} else {
ctrans = citem->transform * g;
}
}
// FIXME: constructing a transform that would fully preserve the appearance of a
// textpath if it is ungrouped with its path seems to be impossible in general
// case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
// as well, we'll need to relink it to some "virtual" path which is inversely
// stretched relative to the actual path, and then squeeze the textpath back so it
// would both fit the actual path _and_ be squeezed as before. It's a bummer.
// This is just a way to temporarily remember the transform in repr. When repr is
// reattached outside of the group, the transform will be written more properly
// (i.e. optimized into the object if the corresponding preference is set)
gchar *affinestr=sp_svg_transform_write(ctrans);
nrepr->setAttribute("transform", affinestr);
g_free(affinestr);
items = g_slist_prepend (items, nrepr);
} else {
Inkscape::XML::Node *nrepr = child->getRepr()->duplicate(prepr->document());
objects = g_slist_prepend (objects, nrepr);
}
}
/* Step 2 - clear group */
// remember the position of the group
gint pos = group->getRepr()->position();
// the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
group->deleteObject(true, false);
/* Step 3 - add nonitems */
if (objects) {
Inkscape::XML::Node *last_def = defs->getRepr()->lastChild();
while (objects) {
Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
if (!sp_repr_is_meta_element(repr)) {
defs->getRepr()->addChild(repr, last_def);
}
Inkscape::GC::release(repr);
objects = g_slist_remove (objects, objects->data);
}
}
/* Step 4 - add items */
while (items) {
Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
// add item
prepr->appendChild(repr);
// restore position; since the items list was prepended (i.e. reverse), we now add
// all children at the same pos, which inverts the order once again
repr->setPosition(pos > 0 ? pos : 0);
// fill in the children list if non-null
SPItem *item = static_cast<SPItem *>(doc->getObjectByRepr(repr));
item->doWriteTransform(repr, item->transform, NULL, false);
Inkscape::GC::release(repr);
if (children && SP_IS_ITEM (item))
*children = g_slist_prepend (*children, item);
items = g_slist_remove (items, items->data);
}
if (do_done) {
DocumentUndo::done(doc, SP_VERB_NONE, _("Ungroup"));
}
}
static Geom::Point sp_pattern_extract_scale(SPPattern *pat)
{
Geom::Affine transf = pat->patternTransform;
return Geom::Point( transf.expansionX(), transf.expansionY() );
}