mirror of https://github.com/octoleo/plantuml.git
501 lines
14 KiB
Java
501 lines
14 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2024, Arnaud Roques
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*
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* Project Info: https://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* https://plantuml.com/patreon (only 1$ per month!)
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* https://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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* Contribution: Miguel Esteves
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*
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*
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*/
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package net.sourceforge.plantuml.klimt.shape;
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import java.awt.Graphics2D;
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import java.awt.geom.CubicCurve2D;
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import java.awt.geom.GeneralPath;
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import java.awt.geom.Line2D;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Objects;
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import java.util.Set;
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import net.sourceforge.plantuml.klimt.UPath;
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import net.sourceforge.plantuml.klimt.UShape;
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import net.sourceforge.plantuml.klimt.UTranslate;
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import net.sourceforge.plantuml.klimt.geom.BezierUtils;
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import net.sourceforge.plantuml.klimt.geom.RectangleArea;
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import net.sourceforge.plantuml.klimt.geom.EnsureVisible;
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import net.sourceforge.plantuml.klimt.geom.MinFinder;
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import net.sourceforge.plantuml.klimt.geom.MinMax;
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import net.sourceforge.plantuml.klimt.geom.Moveable;
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import net.sourceforge.plantuml.klimt.geom.PointAndAngle;
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import net.sourceforge.plantuml.klimt.geom.USegmentType;
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import net.sourceforge.plantuml.klimt.geom.XCubicCurve2D;
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import net.sourceforge.plantuml.klimt.geom.XPoint2D;
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public class DotPath implements UShape, Moveable {
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public static class TriPoints {
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public TriPoints(XPoint2D p1, XPoint2D p2, XPoint2D p) {
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x1 = p1.getX();
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y1 = p1.getY();
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x2 = p2.getX();
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y2 = p2.getY();
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x = p.getX();
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y = p.getY();
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}
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public final double x1;
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public final double y1;
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public final double x2;
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public final double y2;
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public final double x;
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public final double y;
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// @Override
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// public String toString() {
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// return "[" + x1 + "," + y1 + " " + x2 + "," + y2 + " " + x + "," + y
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// + "]";
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// }
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}
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private final List<XCubicCurve2D> beziers = new ArrayList<>();
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private String comment;
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private String codeLine;
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public DotPath copy() {
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final DotPath result = new DotPath();
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for (XCubicCurve2D c : this.beziers)
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result.beziers.add(new XCubicCurve2D(c.x1, c.y1, c.ctrlx1, c.ctrly1, c.ctrlx2, c.ctrly2, c.x2, c.y2));
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return result;
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}
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public static DotPath fromBeziers(List<XCubicCurve2D> beziers) {
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final DotPath result = new DotPath();
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result.beziers.addAll(Objects.requireNonNull(beziers));
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return result;
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}
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public DotPath() {
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}
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public DotPath addCurve(XPoint2D pt1, XPoint2D pt2, XPoint2D pt3, XPoint2D pt4) {
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final List<XCubicCurve2D> beziersNew = new ArrayList<>(beziers);
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beziersNew.add(new XCubicCurve2D(pt1.getX(), pt1.getY(), pt2.getX(), pt2.getY(), pt3.getX(), pt3.getY(),
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pt4.getX(), pt4.getY()));
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return fromBeziers(beziersNew);
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}
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public DotPath addCurve(XPoint2D pt2, XPoint2D pt3, XPoint2D pt4) {
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final XCubicCurve2D last = beziers.get(beziers.size() - 1);
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final XPoint2D p1 = last.getP2();
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return addCurve(p1, pt2, pt3, pt4);
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}
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// private final String print;
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public XPoint2D getStartPoint() {
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return beziers.get(0).getP1();
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}
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public Set<XPoint2D> sample() {
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final Set<XPoint2D> result = new HashSet<>();
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for (XCubicCurve2D bez : beziers)
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sample(bez, result);
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return Collections.unmodifiableSet(result);
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}
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private static void sample(XCubicCurve2D bez, Set<XPoint2D> result) {
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final XPoint2D p1 = bez.getCtrlP1();
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final XPoint2D p2 = bez.getCtrlP2();
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if (bez.getFlatnessSq() > 0.5 || p1.distance(p2) > 4) {
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final XCubicCurve2D left = new XCubicCurve2D();
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final XCubicCurve2D right = new XCubicCurve2D();
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bez.subdivide(left, right);
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sample(left, result);
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sample(right, result);
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} else {
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result.add(p1);
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result.add(p2);
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}
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}
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public PointAndAngle getMiddle() {
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XPoint2D result = null;
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double angle = 0;
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for (XCubicCurve2D bez : beziers) {
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final XCubicCurve2D left = new XCubicCurve2D();
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final XCubicCurve2D right = new XCubicCurve2D();
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bez.subdivide(left, right);
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final XPoint2D p1 = left.getP1();
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final XPoint2D p2 = left.getP2();
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final XPoint2D p3 = right.getP1();
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final XPoint2D p4 = right.getP2();
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if (result == null || getCost(p1) < getCost(result)) {
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result = p1;
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angle = BezierUtils.getStartingAngle(left);
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}
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if (getCost(p2) < getCost(result)) {
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result = p2;
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angle = BezierUtils.getEndingAngle(left);
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}
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if (getCost(p3) < getCost(result)) {
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result = p3;
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angle = BezierUtils.getStartingAngle(right);
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}
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if (getCost(p4) < getCost(result)) {
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result = p4;
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angle = BezierUtils.getEndingAngle(right);
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}
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}
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return new PointAndAngle(result, angle);
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}
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private double getCost(XPoint2D pt) {
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final XPoint2D start = getStartPoint();
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final XPoint2D end = getEndPoint();
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return pt.distanceSq(start) + pt.distanceSq(end);
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}
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public void forceStartPoint(double x, double y) {
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beziers.get(0).x1 = x;
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beziers.get(0).y1 = y;
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beziers.get(0).ctrlx1 = x;
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beziers.get(0).ctrly1 = y;
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}
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public void moveStartPoint(UTranslate move) {
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moveStartPoint(move.getDx(), move.getDy());
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}
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public void moveEndPoint(UTranslate move) {
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moveEndPoint(move.getDx(), move.getDy());
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}
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public void moveStartPoint(double dx, double dy) {
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beziers.get(0).x1 += dx;
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beziers.get(0).y1 += dy;
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beziers.get(0).ctrlx1 += dx;
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beziers.get(0).ctrly1 += dy;
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}
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public XPoint2D getEndPoint() {
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return beziers.get(beziers.size() - 1).getP2();
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}
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public void forceEndPoint(double x, double y) {
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beziers.get(beziers.size() - 1).x2 = x;
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beziers.get(beziers.size() - 1).y2 = y;
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beziers.get(beziers.size() - 1).ctrlx2 = x;
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beziers.get(beziers.size() - 1).ctrly2 = y;
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}
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public void moveEndPoint(double dx, double dy) {
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beziers.get(beziers.size() - 1).x2 += dx;
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beziers.get(beziers.size() - 1).y2 += dy;
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beziers.get(beziers.size() - 1).ctrlx2 += dx;
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beziers.get(beziers.size() - 1).ctrly2 += dy;
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}
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public MinFinder getMinFinder() {
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final MinFinder result = new MinFinder();
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for (XCubicCurve2D c : beziers) {
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result.manage(c.x1, c.y1);
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result.manage(c.x2, c.y2);
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result.manage(c.ctrlx1, c.ctrly1);
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result.manage(c.ctrlx2, c.ctrly2);
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}
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return result;
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}
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public MinMax getMinMax() {
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MinMax result = MinMax.getEmpty(false);
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for (XCubicCurve2D c : beziers) {
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result = result.addPoint(c.x1, c.y1);
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result = result.addPoint(c.x2, c.y2);
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result = result.addPoint(c.ctrlx1, c.ctrly1);
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result = result.addPoint(c.ctrlx2, c.ctrly2);
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}
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return result;
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}
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public double getMinDist(XPoint2D ref) {
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double result = Double.MAX_VALUE;
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for (XCubicCurve2D c : beziers) {
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final double d1 = ref.distance(c.x1, c.y1);
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if (d1 < result)
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result = d1;
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final double d2 = ref.distance(c.x2, c.y2);
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if (d2 < result)
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result = d2;
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final double d3 = ref.distance(c.ctrlx1, c.ctrly1);
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if (d3 < result)
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result = d3;
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final double d4 = ref.distance(c.ctrlx2, c.ctrly2);
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if (d4 < result)
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result = d4;
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}
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return result;
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}
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public Line2D getEndTangeante() {
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final XCubicCurve2D last = beziers.get(beziers.size() - 1);
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double dx = last.x2 - last.ctrlx2;
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double dy = last.y2 - last.ctrly2;
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if (dx == 0 && dy == 0) {
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dx = last.x2 - last.x1;
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dy = last.y2 - last.y1;
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}
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return new Line2D.Double(last.x2, last.y2, last.x2 + dx, last.y2 + dy);
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}
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public double getEndAngle() {
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final Line2D tan = getEndTangeante();
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final double theta1 = Math.atan2(tan.getY2() - tan.getY1(), tan.getX2() - tan.getX1());
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return theta1;
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}
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public double getStartAngle() {
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final Line2D tan = getStartTangeante();
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final double theta1 = Math.atan2(tan.getY2() - tan.getY1(), tan.getX2() - tan.getX1());
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return theta1;
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}
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public Line2D getStartTangeante() {
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final XCubicCurve2D first = beziers.get(0);
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double dx = first.ctrlx1 - first.x1;
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double dy = first.ctrly1 - first.y1;
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if (dx == 0 && dy == 0) {
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dx = first.x2 - first.x1;
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dy = first.y2 - first.y1;
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}
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return new Line2D.Double(first.x1, first.y1, first.x1 + dx, first.y1 + dy);
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}
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public DotPath addBefore(XCubicCurve2D before) {
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final List<XCubicCurve2D> copy = new ArrayList<>(beziers);
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copy.add(0, before);
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return fromBeziers(copy);
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}
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private DotPath addBefore(DotPath other) {
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final List<XCubicCurve2D> copy = new ArrayList<>(beziers);
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copy.addAll(0, other.beziers);
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return fromBeziers(copy);
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}
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public DotPath addAfter(XCubicCurve2D after) {
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final List<XCubicCurve2D> copy = new ArrayList<>(beziers);
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copy.add(after);
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return fromBeziers(copy);
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}
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public DotPath addAfter(DotPath other) {
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final List<XCubicCurve2D> copy = new ArrayList<>(beziers);
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copy.addAll(other.beziers);
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return fromBeziers(copy);
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}
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public void draw(Graphics2D g2d, double x, double y) {
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final GeneralPath p = new GeneralPath();
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for (XCubicCurve2D bez : beziers) {
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final CubicCurve2D.Double bez2 = new CubicCurve2D.Double(x + bez.x1, y + bez.y1, x + bez.ctrlx1,
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y + bez.ctrly1, x + bez.ctrlx2, y + bez.ctrly2, x + bez.x2, y + bez.y2);
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p.append(bez2, true);
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}
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g2d.draw(p);
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}
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public void manageEnsureVisible(double x, double y, EnsureVisible visible) {
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for (XCubicCurve2D bez : beziers) {
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visible.ensureVisible(x + bez.x1, y + bez.y1);
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visible.ensureVisible(x + bez.x2, y + bez.y2);
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}
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}
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public UPath toUPath() {
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final UPath result = new UPath(comment, codeLine);
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boolean start = true;
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for (XCubicCurve2D bez : beziers) {
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if (start) {
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result.add(new double[] { bez.x1, bez.y1 }, USegmentType.SEG_MOVETO);
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start = false;
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}
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result.add(new double[] { bez.ctrlx1, bez.ctrly1, bez.ctrlx2, bez.ctrly2, bez.x2, bez.y2 },
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USegmentType.SEG_CUBICTO);
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}
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return result;
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}
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static public String toString(XCubicCurve2D c) {
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return "(" + c.x1 + "," + c.y1 + ") " + "(" + c.ctrlx1 + "," + c.ctrly1 + ") " + "(" + c.ctrlx2 + "," + c.ctrly2
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+ ") " + "(" + c.x2 + "," + c.y2 + ") ";
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}
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@Override
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public String toString() {
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final StringBuilder sb = new StringBuilder();
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for (XCubicCurve2D c : beziers) {
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sb.append(toString(c));
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sb.append(" - ");
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}
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return sb.toString();
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}
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public static XCubicCurve2D reverse(XCubicCurve2D curv) {
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return new XCubicCurve2D(curv.getX2(), curv.getY2(), curv.getCtrlX2(), curv.getCtrlY2(), curv.getCtrlX1(),
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curv.getCtrlY1(), curv.getX1(), curv.getY1());
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}
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public DotPath reverse() {
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final List<XCubicCurve2D> reverse = new ArrayList<>(beziers);
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Collections.reverse(reverse);
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final List<XCubicCurve2D> copy = new ArrayList<>();
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for (XCubicCurve2D cub : reverse)
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copy.add(reverse(cub));
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return fromBeziers(copy);
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}
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public void moveSvek(double deltaX, double deltaY) {
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for (int i = 0; i < beziers.size(); i++) {
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final XCubicCurve2D c = beziers.get(i);
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beziers.set(i, new XCubicCurve2D(c.x1 + deltaX, c.y1 + deltaY, c.ctrlx1 + deltaX, c.ctrly1 + deltaY,
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c.ctrlx2 + deltaX, c.ctrly2 + deltaY, c.x2 + deltaX, c.y2 + deltaY));
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}
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}
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public final List<XCubicCurve2D> getBeziers() {
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return Collections.unmodifiableList(beziers);
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}
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public DotPath simulateCompound(RectangleArea head, RectangleArea tail) {
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if (head == null && tail == null)
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return this;
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// System.err.println("head=" + head + " tail=" + tail);
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DotPath me = this;
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if (tail != null) {
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// System.err.println("beziers1=" + this.toString());
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if (tail.contains(getStartPoint())) {
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final DotPath result = new DotPath();
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int idx = 0;
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while (idx + 1 < this.beziers.size() && tail.contains(this.beziers.get(idx).getP2())) {
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if (tail.contains(this.beziers.get(idx).getP1()) == false)
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throw new IllegalStateException();
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idx++;
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}
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if (tail.contains(this.beziers.get(idx).getP2())) {
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// System.err.println("strange1");
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} else {
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assert tail.contains(this.beziers.get(idx).getP1());
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assert tail.contains(this.beziers.get(idx).getP2()) == false;
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XCubicCurve2D current = this.beziers.get(idx);
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for (int k = 0; k < 8; k++) {
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final XCubicCurve2D part1 = new XCubicCurve2D();
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final XCubicCurve2D part2 = new XCubicCurve2D();
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current.subdivide(part1, part2);
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assert part1.getP2().equals(part2.getP1());
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if (tail.contains(part1.getP2())) {
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current = part2;
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} else {
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result.beziers.add(0, part2);
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current = part1;
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}
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}
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for (int i = idx + 1; i < this.beziers.size(); i++)
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result.beziers.add(this.beziers.get(i));
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me = result;
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}
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}
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}
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if (head != null) {
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final DotPath result = new DotPath();
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if (head.contains(getEndPoint())) {
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for (XCubicCurve2D current : me.beziers) {
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if (head.contains(current.getP2()) == false) {
|
|
result.beziers.add(current);
|
|
} else {
|
|
if (head.contains(current.getP1())) {
|
|
return me;
|
|
}
|
|
assert head.contains(current.getP1()) == false;
|
|
assert head.contains(current.getP2());
|
|
for (int k = 0; k < 8; k++) {
|
|
final XCubicCurve2D part1 = new XCubicCurve2D();
|
|
final XCubicCurve2D part2 = new XCubicCurve2D();
|
|
current.subdivide(part1, part2);
|
|
assert part1.getP2().equals(part2.getP1());
|
|
if (head.contains(part1.getP2())) {
|
|
current = part1;
|
|
} else {
|
|
result.beziers.add(part1);
|
|
current = part2;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
return me;
|
|
}
|
|
|
|
public boolean isLine() {
|
|
for (XCubicCurve2D curve : beziers)
|
|
if (curve.getFlatnessSq() > 0.001)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
public void setCommentAndCodeLine(String comment, String codeLine) {
|
|
this.comment = comment;
|
|
this.codeLine = codeLine;
|
|
}
|
|
|
|
}
|