Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/model/CrossSectionLine.java @ 8813:8abe94270f32
Do not filter cross section points for display.
Filtering coordinates outside an extent probably aimed at omitting
outliers from the diagram. This is obsolete and had the side effect of
filtering the important point at x = 0.
author | Tom Gottfried <tom@intevation.de> |
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date | Fri, 28 Apr 2017 19:03:56 +0200 |
parents | 9d2e69f971f5 |
children | 0a5239a1e46e |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.model; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import java.util.Collections; import java.util.Comparator; import java.awt.geom.Point2D; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.GeneratedValue; import javax.persistence.Column; import javax.persistence.SequenceGenerator; import javax.persistence.GenerationType; import javax.persistence.OneToOne; import javax.persistence.OneToMany; import javax.persistence.JoinColumn; import org.apache.log4j.Logger; @Entity @Table(name = "cross_section_lines") public class CrossSectionLine implements Serializable { private static Logger log = Logger.getLogger(CrossSectionLine.class); public static final double EPSILON = 1e-4; private Integer id; private Double km; private CrossSection crossSection; private List<CrossSectionPoint> points; public static final Comparator<CrossSectionPoint> COL_POS_CMP = new Comparator<CrossSectionPoint>() { @Override public int compare(CrossSectionPoint a, CrossSectionPoint b) { double xa = a.getX().doubleValue(); double xb = b.getX().doubleValue(); double d = xa - xb; if (d < -EPSILON) return -1; if (d > +EPSILON) return +1; int diff = a.getColPos() - b.getColPos(); return diff < 0 ? -1 : diff > 0 ? +1 : 0; } }; public CrossSectionLine() { } public CrossSectionLine(CrossSection crossSection, Double km) { this.crossSection = crossSection; this.km = km; } @Id @SequenceGenerator( name = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ", sequenceName = "CROSS_SECTION_LINES_ID_SEQ", allocationSize = 1) @GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ") @Column(name = "id") public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } @Column(name = "km") public Double getKm() { return km; } public void setKm(Double km) { this.km = km; } @OneToOne @JoinColumn(name = "cross_section_id") public CrossSection getCrossSection() { return crossSection; } public void setCrossSection(CrossSection crossSection) { this.crossSection = crossSection; } @OneToMany @JoinColumn(name="cross_section_line_id") public List<CrossSectionPoint> getPoints() { return points; } public void setPoints(List<CrossSectionPoint> points) { this.points = points; } public List<Point2D> fetchCrossSectionLinesPoints() { List<CrossSectionPoint> linePoints = new ArrayList<CrossSectionPoint>(getPoints()); Collections.sort(linePoints, COL_POS_CMP); List<Point2D> points = new ArrayList<Point2D>(linePoints.size()); for (CrossSectionPoint p: linePoints) { double x = p.getX().doubleValue(); double y = p.getY().doubleValue(); points.add(new Point2D.Double(x, y)); } return points; } public double [][] fetchCrossSectionProfile() { return fetchCrossSectionProfile(fetchCrossSectionLinesPoints()); } /** double[][] from List<Point2D> */ public static double [][] fetchCrossSectionProfile(List<Point2D> points) { int P = points.size(); double [] xs = new double[P]; double [] ys = new double[P]; if (P > 0) { xs[0] = points.get(0).getX(); ys[0] = points.get(0).getY(); for (int i = 1; i < P; i++) { Point2D p = points.get(i); double x = p.getX(); double y = p.getY(); if (x <= xs[i-1]) { x = xs[i-1] + EPSILON; } xs[i] = x; ys[i] = y; } } return new double [][] { xs, ys }; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :