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-rw-r--r--src/sp-star.cpp627
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diff --git a/src/sp-star.cpp b/src/sp-star.cpp
deleted file mode 100644
index 9844df98a..000000000
--- a/src/sp-star.cpp
+++ /dev/null
@@ -1,627 +0,0 @@
-/*
- * <sodipodi:star> implementation
- *
- * Authors:
- * Mitsuru Oka <oka326@parkcity.ne.jp>
- * Lauris Kaplinski <lauris@kaplinski.com>
- * bulia byak <buliabyak@users.sf.net>
- * Abhishek Sharma
- *
- * Copyright (C) 1999-2002 Lauris Kaplinski
- * Copyright (C) 2000-2001 Ximian, Inc.
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <cstring>
-#include <string>
-#include <glib.h>
-#include "live_effects/effect.h"
-
-#include "svg/svg.h"
-#include "attributes.h"
-#include "display/curve.h"
-#include "xml/repr.h"
-#include "document.h"
-
-#include "sp-star.h"
-#include <glibmm/i18n.h>
-
-SPStar::SPStar() : SPPolygon() ,
- sides(5),
- center(0, 0),
- flatsided(0),
- rounded(0.0),
- randomized(0.0)
-{
- this->r[0] = 1.0;
- this->r[1] = 0.001;
- this->arg[0] = this->arg[1] = 0.0;
-}
-
-SPStar::~SPStar() {
-}
-
-void SPStar::build(SPDocument * document, Inkscape::XML::Node * repr) {
- // CPPIFY: see header file
- SPShape::build(document, repr);
-
- this->readAttr( "sodipodi:cx" );
- this->readAttr( "sodipodi:cy" );
- this->readAttr( "sodipodi:sides" );
- this->readAttr( "sodipodi:r1" );
- this->readAttr( "sodipodi:r2" );
- this->readAttr( "sodipodi:arg1" );
- this->readAttr( "sodipodi:arg2" );
- this->readAttr( "inkscape:flatsided" );
- this->readAttr( "inkscape:rounded" );
- this->readAttr( "inkscape:randomized" );
-}
-
-Inkscape::XML::Node* SPStar::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
- if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
- repr = xml_doc->createElement("svg:path");
- }
-
- if (flags & SP_OBJECT_WRITE_EXT) {
- repr->setAttribute("sodipodi:type", "star");
- sp_repr_set_int (repr, "sodipodi:sides", this->sides);
- sp_repr_set_svg_double(repr, "sodipodi:cx", this->center[Geom::X]);
- sp_repr_set_svg_double(repr, "sodipodi:cy", this->center[Geom::Y]);
- sp_repr_set_svg_double(repr, "sodipodi:r1", this->r[0]);
- sp_repr_set_svg_double(repr, "sodipodi:r2", this->r[1]);
- sp_repr_set_svg_double(repr, "sodipodi:arg1", this->arg[0]);
- sp_repr_set_svg_double(repr, "sodipodi:arg2", this->arg[1]);
- sp_repr_set_boolean (repr, "inkscape:flatsided", this->flatsided);
- sp_repr_set_svg_double(repr, "inkscape:rounded", this->rounded);
- sp_repr_set_svg_double(repr, "inkscape:randomized", this->randomized);
- }
-
- this->set_shape();
-
- char *d = sp_svg_write_path (this->_curve->get_pathvector());
- repr->setAttribute("d", d);
- g_free(d);
-
- // CPPIFY: see header file
- SPShape::write(xml_doc, repr, flags);
-
- return repr;
-}
-
-void SPStar::set(unsigned int key, const gchar* value) {
- SVGLength::Unit unit;
-
- /* fixme: we should really collect updates */
- switch (key) {
- case SP_ATTR_SODIPODI_SIDES:
- if (value) {
- this->sides = atoi (value);
- this->sides = CLAMP(this->sides, 3, 1024);
- } else {
- this->sides = 5;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_SODIPODI_CX:
- if (!sp_svg_length_read_ldd (value, &unit, NULL, &this->center[Geom::X]) ||
- (unit == SVGLength::EM) ||
- (unit == SVGLength::EX) ||
- (unit == SVGLength::PERCENT)) {
- this->center[Geom::X] = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_SODIPODI_CY:
- if (!sp_svg_length_read_ldd (value, &unit, NULL, &this->center[Geom::Y]) ||
- (unit == SVGLength::EM) ||
- (unit == SVGLength::EX) ||
- (unit == SVGLength::PERCENT)) {
- this->center[Geom::Y] = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_SODIPODI_R1:
- if (!sp_svg_length_read_ldd (value, &unit, NULL, &this->r[0]) ||
- (unit == SVGLength::EM) ||
- (unit == SVGLength::EX) ||
- (unit == SVGLength::PERCENT)) {
- this->r[0] = 1.0;
- }
-
- /* fixme: Need CLAMP (Lauris) */
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_SODIPODI_R2:
- if (!sp_svg_length_read_ldd (value, &unit, NULL, &this->r[1]) ||
- (unit == SVGLength::EM) ||
- (unit == SVGLength::EX) ||
- (unit == SVGLength::PERCENT)) {
- this->r[1] = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- return;
-
- case SP_ATTR_SODIPODI_ARG1:
- if (value) {
- this->arg[0] = g_ascii_strtod (value, NULL);
- } else {
- this->arg[0] = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_SODIPODI_ARG2:
- if (value) {
- this->arg[1] = g_ascii_strtod (value, NULL);
- } else {
- this->arg[1] = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_INKSCAPE_FLATSIDED:
- if (value && !strcmp(value, "true")) {
- this->flatsided = true;
- } else {
- this->flatsided = false;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_INKSCAPE_ROUNDED:
- if (value) {
- this->rounded = g_ascii_strtod (value, NULL);
- } else {
- this->rounded = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- case SP_ATTR_INKSCAPE_RANDOMIZED:
- if (value) {
- this->randomized = g_ascii_strtod (value, NULL);
- } else {
- this->randomized = 0.0;
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
- break;
-
- default:
- // CPPIFY: see header file
- SPShape::set(key, value);
- break;
- }
-}
-
-void SPStar::update(SPCtx *ctx, guint flags) {
- if (flags & (SP_OBJECT_MODIFIED_FLAG |
- SP_OBJECT_STYLE_MODIFIED_FLAG |
- SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
-
- this->set_shape();
- }
-
- // CPPIFY: see header file
- SPShape::update(ctx, flags);
-}
-
-void SPStar::update_patheffect(bool write) {
- this->set_shape(true);
-
- if (write) {
- Inkscape::XML::Node *repr = this->getRepr();
-
- if ( this->_curve != NULL ) {
- gchar *str = sp_svg_write_path(this->_curve->get_pathvector());
- repr->setAttribute("d", str);
- g_free(str);
- } else {
- repr->setAttribute("d", NULL);
- }
- }
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-}
-
-const char* SPStar::displayName() const {
- if (this->flatsided == false)
- return _("Star");
- return _("Polygon");
-}
-
-gchar* SPStar::description() const {
- // while there will never be less than 3 vertices, we still need to
- // make calls to ngettext because the pluralization may be different
- // for various numbers >=3. The singular form is used as the index.
- return g_strdup_printf (ngettext(_("with %d vertex"), _("with %d vertices"),
- this->sides), this->sides);
-}
-
-/**
-Returns a unit-length vector at 90 degrees to the direction from o to n
- */
-static Geom::Point
-rot90_rel (Geom::Point o, Geom::Point n)
-{
- return ((1/Geom::L2(n - o)) * Geom::Point ((n - o)[Geom::Y], (o - n)[Geom::X]));
-}
-
-/**
-Returns a unique 32 bit int for a given point.
-Obvious (but acceptable for my purposes) limits to uniqueness:
-- returned value for x,y repeats for x+n*1024,y+n*1024
-- returned value is unchanged when the point is moved by less than 1/1024 of px
-*/
-static guint32
-point_unique_int (Geom::Point o)
-{
- return ((guint32)
- 65536 *
- (((int) floor (o[Geom::X] * 64)) % 1024 + ((int) floor (o[Geom::X] * 1024)) % 64)
- +
- (((int) floor (o[Geom::Y] * 64)) % 1024 + ((int) floor (o[Geom::Y] * 1024)) % 64)
- );
-}
-
-/**
-Returns the next pseudorandom value using the Linear Congruential Generator algorithm (LCG)
-with the parameters (m = 2^32, a = 69069, b = 1). These parameters give a full-period generator,
-i.e. it is guaranteed to go through all integers < 2^32 (see http://random.mat.sbg.ac.at/~charly/server/server.html)
-*/
-static inline guint32
-lcg_next(guint32 const prev)
-{
- return (guint32) ( 69069 * prev + 1 );
-}
-
-/**
-Returns a random number in the range [-0.5, 0.5) from the given seed, stepping the given number of steps from the seed.
-*/
-static double
-rnd (guint32 const seed, unsigned steps) {
- guint32 lcg = seed;
- for (; steps > 0; steps --)
- lcg = lcg_next (lcg);
-
- return ( lcg / 4294967296. ) - 0.5;
-}
-
-static Geom::Point
-sp_star_get_curvepoint (SPStar *star, SPStarPoint point, gint index, bool previ)
-{
- // the point whose neighboring curve handle we're calculating
- Geom::Point o = sp_star_get_xy (star, point, index);
-
- // indices of previous and next points
- gint pi = (index > 0)? (index - 1) : (star->sides - 1);
- gint ni = (index < star->sides - 1)? (index + 1) : 0;
-
- // the other point type
- SPStarPoint other = (point == SP_STAR_POINT_KNOT2? SP_STAR_POINT_KNOT1 : SP_STAR_POINT_KNOT2);
-
- // the neighbors of o; depending on flatsided, they're either the same type (polygon) or the other type (star)
- Geom::Point prev = (star->flatsided? sp_star_get_xy (star, point, pi) : sp_star_get_xy (star, other, point == SP_STAR_POINT_KNOT2? index : pi));
- Geom::Point next = (star->flatsided? sp_star_get_xy (star, point, ni) : sp_star_get_xy (star, other, point == SP_STAR_POINT_KNOT1? index : ni));
-
- // prev-next midpoint
- Geom::Point mid = 0.5 * (prev + next);
-
- // point to which we direct the bissector of the curve handles;
- // it's far enough outside the star on the perpendicular to prev-next through mid
- Geom::Point biss = mid + 100000 * rot90_rel (mid, next);
-
- // lengths of vectors to prev and next
- gdouble prev_len = Geom::L2 (prev - o);
- gdouble next_len = Geom::L2 (next - o);
-
- // unit-length vector perpendicular to o-biss
- Geom::Point rot = rot90_rel (o, biss);
-
- // multiply rot by star->rounded coefficient and the distance to the star point; flip for next
- Geom::Point ret;
- if (previ) {
- ret = (star->rounded * prev_len) * rot;
- } else {
- ret = (star->rounded * next_len * -1) * rot;
- }
-
- if (star->randomized == 0) {
- // add the vector to o to get the final curvepoint
- return o + ret;
- } else {
- // the seed corresponding to the exact point
- guint32 seed = point_unique_int (o);
-
- // randomly rotate (by step 3 from the seed) and scale (by step 4) the vector
- ret = ret * Geom::Affine (Geom::Rotate (star->randomized * M_PI * rnd (seed, 3)));
- ret *= ( 1 + star->randomized * rnd (seed, 4));
-
- // the randomized corner point
- Geom::Point o_randomized = sp_star_get_xy (star, point, index, true);
-
- return o_randomized + ret;
- }
-}
-
-#define NEXT false
-#define PREV true
-
-void SPStar::set_shape(bool force) {
- // perhaps we should convert all our shapes into LPEs without source path
- // and with knotholders for parameters, then this situation will be handled automatically
- // by disabling the entire stack (including the shape LPE)
- if (hasBrokenPathEffect()) {
- g_warning ("The star shape has unknown LPE on it! Convert to path to make it editable preserving the appearance; editing it as star will remove the bad LPE");
-
- if (this->getRepr()->attribute("d")) {
- // unconditionally read the curve from d, if any, to preserve appearance
- Geom::PathVector pv = sp_svg_read_pathv(this->getRepr()->attribute("d"));
- SPCurve *cold = new SPCurve(pv);
- this->setCurveInsync( cold, TRUE);
- this->setCurveBeforeLPE(cold);
- cold->unref();
- }
-
- return;
- }
-
- SPCurve *c = new SPCurve ();
-
- bool not_rounded = (fabs (this->rounded) < 1e-4);
-
- // note that we pass randomized=true to sp_star_get_xy, because the curve must be randomized;
- // other places that call that function (e.g. the knotholder) need the exact point
-
- // draw 1st segment
- c->moveto(sp_star_get_xy (this, SP_STAR_POINT_KNOT1, 0, true));
-
- if (this->flatsided == false) {
- if (not_rounded) {
- c->lineto(sp_star_get_xy (this, SP_STAR_POINT_KNOT2, 0, true));
- } else {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, 0, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT2, 0, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT2, 0, true));
- }
- }
-
- // draw all middle segments
- for (gint i = 1; i < sides; i++) {
- if (not_rounded) {
- c->lineto(sp_star_get_xy (this, SP_STAR_POINT_KNOT1, i, true));
- } else {
- if (this->flatsided == false) {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT2, i - 1, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, i, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT1, i, true));
- } else {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, i - 1, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, i, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT1, i, true));
- }
- }
-
- if (this->flatsided == false) {
- if (not_rounded) {
- c->lineto(sp_star_get_xy (this, SP_STAR_POINT_KNOT2, i, true));
- } else {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, i, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT2, i, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT2, i, true));
- }
- }
- }
-
- // draw last segment
- if (!not_rounded) {
- if (this->flatsided == false) {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT2, sides - 1, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, 0, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT1, 0, true));
- } else {
- c->curveto(sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, sides - 1, NEXT),
- sp_star_get_curvepoint (this, SP_STAR_POINT_KNOT1, 0, PREV),
- sp_star_get_xy (this, SP_STAR_POINT_KNOT1, 0, true));
- }
- }
-
- c->closepath();
-
- /* Reset the shape'scurve to the "original_curve"
- * This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/
- if(this->getCurveBeforeLPE()) {
- if(!force && this->getCurveBeforeLPE()->get_pathvector() == c->get_pathvector()) {
- c->unref();
- return;
- }
- }
- this->setCurveInsync( c, TRUE);
- this->setCurveBeforeLPE( c );
-
- if (hasPathEffect() && pathEffectsEnabled()) {
- SPCurve *c_lpe = c->copy();
- bool success = this->performPathEffect(c_lpe);
-
- if (success) {
- this->setCurveInsync( c_lpe, TRUE);
- }
-
- c_lpe->unref();
- }
-
- c->unref();
-}
-
-void
-sp_star_position_set (SPStar *star, gint sides, Geom::Point center, gdouble r1, gdouble r2, gdouble arg1, gdouble arg2, bool isflat, double rounded, double randomized)
-{
- g_return_if_fail (star != NULL);
- g_return_if_fail (SP_IS_STAR (star));
-
- star->sides = CLAMP(sides, 3, 1024);
- star->center = center;
- star->r[0] = MAX (r1, 0.001);
-
- if (isflat == false) {
- star->r[1] = CLAMP(r2, 0.0, star->r[0]);
- } else {
- star->r[1] = CLAMP( r1*cos(M_PI/sides) ,0.0, star->r[0] );
- }
-
- star->arg[0] = arg1;
- star->arg[1] = arg2;
- star->flatsided = isflat;
- star->rounded = rounded;
- star->randomized = randomized;
- star->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-}
-
-void SPStar::snappoints(std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs) const {
- // We will determine the star's midpoint ourselves, instead of trusting on the base class
- // Therefore snapping to object midpoints is temporarily disabled
- Inkscape::SnapPreferences local_snapprefs = *snapprefs;
- local_snapprefs.setTargetSnappable(Inkscape::SNAPTARGET_OBJECT_MIDPOINT, false);
-
- // CPPIFY: see header file
- SPShape::snappoints(p, &local_snapprefs);
-
- if (snapprefs->isTargetSnappable(Inkscape::SNAPTARGET_OBJECT_MIDPOINT)) {
- Geom::Affine const i2dt (this->i2dt_affine ());
- p.push_back(Inkscape::SnapCandidatePoint(this->center * i2dt,Inkscape::SNAPSOURCE_OBJECT_MIDPOINT, Inkscape::SNAPTARGET_OBJECT_MIDPOINT));
- }
-}
-
-Geom::Affine SPStar::set_transform(Geom::Affine const &xform)
-{
- bool opt_trans = (randomized == 0);
- // Allow live effects
- if (hasPathEffect() && pathEffectsEnabled() &&
- (this->hasPathEffectOfType(Inkscape::LivePathEffect::CLONE_ORIGINAL) ||
- this->hasPathEffectOfType(Inkscape::LivePathEffect::FILL_BETWEEN_MANY) ||
- this->hasPathEffectOfType(Inkscape::LivePathEffect::BEND_PATH) ||
- this->hasPathEffectOfType(Inkscape::LivePathEffect::FILL_BETWEEN_STROKES) ) )
- {
- // if path has this LPE applied, don't write the transform to the pathdata, but write it 'unoptimized'
- this->adjust_livepatheffect(xform);
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
- return xform;
- }
-
- // Only set transform with proportional scaling
- if (!xform.withoutTranslation().isUniformScale()) {
- // Adjust livepatheffect
- if (hasPathEffect() && pathEffectsEnabled()) {
- this->adjust_livepatheffect(xform);
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
- }
- 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(opt_trans ? xform.withoutTranslation() : xform);
- 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());
-
- // Adjust livepatheffect
- this->adjust_livepatheffect(xform);
-
- this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
-
- return ret;
-}
-
-/**
- * sp_star_get_xy: Get X-Y value as item coordinate system
- * @star: star item
- * @point: point type to obtain X-Y value
- * @index: index of vertex
- * @p: pointer to store X-Y value
- * @randomized: false (default) if you want to get exact, not randomized point
- *
- * Initial item coordinate system is same as document coordinate system.
- */
-Geom::Point
-sp_star_get_xy (SPStar const *star, SPStarPoint point, gint index, bool randomized)
-{
- gdouble darg = 2.0 * M_PI / (double) star->sides;
-
- double arg = star->arg[point];
- arg += index * darg;
-
- Geom::Point xy = star->r[point] * Geom::Point(cos(arg), sin(arg)) + star->center;
-
- if (!randomized || star->randomized == 0) {
- // return the exact point
- return xy;
- } else { // randomize the point
- // find out the seed, unique for this point so that randomization is the same so long as the original point is stationary
- guint32 seed = point_unique_int (xy);
- // the full range (corresponding to star->randomized == 1.0) is equal to the star's diameter
- double range = 2 * MAX (star->r[0], star->r[1]);
- // find out the random displacement; x is controlled by step 1 from the seed, y by the step 2
- Geom::Point shift (star->randomized * range * rnd (seed, 1), star->randomized * range * rnd (seed, 2));
- // add the shift to the exact point
- return xy + shift;
- }
-}
-
-/*
- 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:fileencoding=utf-8:textwidth=99 :
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-20 05:19:23 +0000