1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm.visitor.paint;
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3 |
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4 | import java.awt.BasicStroke;
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5 | import java.awt.Color;
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6 | import java.awt.Graphics2D;
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7 | import java.awt.Point;
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8 | import java.awt.Rectangle;
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9 | import java.awt.RenderingHints;
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10 | import java.awt.Stroke;
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11 | import java.awt.geom.GeneralPath;
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12 | import java.util.ArrayList;
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13 | import java.util.Iterator;
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14 | import java.util.List;
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15 |
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16 | import org.openstreetmap.josm.Main;
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17 | import org.openstreetmap.josm.data.Bounds;
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18 | import org.openstreetmap.josm.data.osm.BBox;
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19 | import org.openstreetmap.josm.data.osm.Changeset;
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20 | import org.openstreetmap.josm.data.osm.DataSet;
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21 | import org.openstreetmap.josm.data.osm.Node;
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22 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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23 | import org.openstreetmap.josm.data.osm.Relation;
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24 | import org.openstreetmap.josm.data.osm.RelationMember;
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25 | import org.openstreetmap.josm.data.osm.Way;
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26 | import org.openstreetmap.josm.data.osm.WaySegment;
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27 | import org.openstreetmap.josm.data.osm.visitor.Visitor;
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28 | import org.openstreetmap.josm.gui.NavigatableComponent;
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29 |
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30 | /**
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31 | * A map renderer that paints a simple scheme of every primitive it visits to a
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32 | * previous set graphic environment.
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33 | * @since 23
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34 | */
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35 | public class WireframeMapRenderer extends AbstractMapRenderer implements Visitor {
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36 |
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37 | /** Color Preference for ways not matching any other group */
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38 | protected Color dfltWayColor;
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39 | /** Color Preference for relations */
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40 | protected Color relationColor;
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41 | /** Color Preference for untagged ways */
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42 | protected Color untaggedWayColor;
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43 | /** Color Preference for tagged nodes */
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44 | protected Color taggedColor;
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45 | /** Color Preference for multiply connected nodes */
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46 | protected Color connectionColor;
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47 | /** Color Preference for tagged and multiply connected nodes */
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48 | protected Color taggedConnectionColor;
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49 | /** Preference: should directional arrows be displayed */
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50 | protected boolean showDirectionArrow;
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51 | /** Preference: should arrows for oneways be displayed */
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52 | protected boolean showOnewayArrow;
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53 | /** Preference: should only the last arrow of a way be displayed */
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54 | protected boolean showHeadArrowOnly;
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55 | /** Preference: should the segment numbers of ways be displayed */
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56 | protected boolean showOrderNumber;
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57 | /** Preference: should selected nodes be filled */
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58 | protected boolean fillSelectedNode;
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59 | /** Preference: should unselected nodes be filled */
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60 | protected boolean fillUnselectedNode;
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61 | /** Preference: should tagged nodes be filled */
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62 | protected boolean fillTaggedNode;
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63 | /** Preference: should multiply connected nodes be filled */
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64 | protected boolean fillConnectionNode;
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65 | /** Preference: size of selected nodes */
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66 | protected int selectedNodeSize;
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67 | /** Preference: size of unselected nodes */
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68 | protected int unselectedNodeSize;
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69 | /** Preference: size of multiply connected nodes */
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70 | protected int connectionNodeSize;
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71 | /** Preference: size of tagged nodes */
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72 | protected int taggedNodeSize;
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73 |
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74 | /** Color cache to draw subsequent segments of same color as one <code>Path</code>. */
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75 | protected Color currentColor;
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76 | /** Path store to draw subsequent segments of same color as one <code>Path</code>. */
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77 | protected GeneralPath currentPath = new GeneralPath();
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78 | /**
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79 | * <code>DataSet</code> passed to the @{link render} function to overcome the argument
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80 | * limitations of @{link Visitor} interface. Only valid until end of rendering call.
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81 | */
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82 | private DataSet ds;
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83 |
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84 | /** Helper variable for {@link #drawSegment} */
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85 | private static final double PHI = Math.toRadians(20);
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86 | /** Helper variable for {@link #drawSegment} */
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87 | private static final double cosPHI = Math.cos(PHI);
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88 | /** Helper variable for {@link #drawSegment} */
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89 | private static final double sinPHI = Math.sin(PHI);
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90 |
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91 | /** Helper variable for {@link #visit(Relation)} */
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92 | private Stroke relatedWayStroke = new BasicStroke(
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93 | 4, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL);
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94 |
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95 | /**
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96 | * Creates an wireframe render
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97 | *
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98 | * @param g the graphics context. Must not be null.
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99 | * @param nc the map viewport. Must not be null.
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100 | * @param isInactiveMode if true, the paint visitor shall render OSM objects such that they
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101 | * look inactive. Example: rendering of data in an inactive layer using light gray as color only.
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102 | * @throws IllegalArgumentException if {@code g} is null
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103 | * @throws IllegalArgumentException if {@code nc} is null
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104 | */
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105 | public WireframeMapRenderer(Graphics2D g, NavigatableComponent nc, boolean isInactiveMode) {
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106 | super(g, nc, isInactiveMode);
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107 | }
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108 |
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109 | @Override
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110 | public void getColors() {
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111 | super.getColors();
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112 | dfltWayColor = PaintColors.DEFAULT_WAY.get();
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113 | relationColor = PaintColors.RELATION.get();
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114 | untaggedWayColor = PaintColors.UNTAGGED_WAY.get();
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115 | highlightColor = PaintColors.HIGHLIGHT_WIREFRAME.get();
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116 | taggedColor = PaintColors.TAGGED.get();
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117 | connectionColor = PaintColors.CONNECTION.get();
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118 |
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119 | if (taggedColor != nodeColor) {
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120 | taggedConnectionColor = taggedColor;
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121 | } else {
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122 | taggedConnectionColor = connectionColor;
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123 | }
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124 | }
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125 |
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126 | @Override
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127 | protected void getSettings(boolean virtual) {
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128 | super.getSettings(virtual);
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129 | MapPaintSettings settings = MapPaintSettings.INSTANCE;
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130 | showDirectionArrow = settings.isShowDirectionArrow();
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131 | showOnewayArrow = settings.isShowOnewayArrow();
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132 | showHeadArrowOnly = settings.isShowHeadArrowOnly();
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133 | showOrderNumber = settings.isShowOrderNumber();
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134 | selectedNodeSize = settings.getSelectedNodeSize();
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135 | unselectedNodeSize = settings.getUnselectedNodeSize();
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136 | connectionNodeSize = settings.getConnectionNodeSize();
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137 | taggedNodeSize = settings.getTaggedNodeSize();
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138 | fillSelectedNode = settings.isFillSelectedNode();
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139 | fillUnselectedNode = settings.isFillUnselectedNode();
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140 | fillConnectionNode = settings.isFillConnectionNode();
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141 | fillTaggedNode = settings.isFillTaggedNode();
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142 |
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143 | g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
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144 | Main.pref.getBoolean("mappaint.wireframe.use-antialiasing", false) ?
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145 | RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF);
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146 | }
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147 |
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148 | /**
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149 | * Renders the dataset for display.
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150 | *
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151 | * @param data <code>DataSet</code> to display
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152 | * @param virtual <code>true</code> if virtual nodes are used
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153 | * @param bounds display boundaries
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154 | */
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155 | @Override
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156 | public void render(DataSet data, boolean virtual, Bounds bounds) {
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157 | BBox bbox = bounds.toBBox();
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158 | this.ds = data;
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159 | getSettings(virtual);
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160 |
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161 | for (final Relation rel : data.searchRelations(bbox)) {
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162 | if (rel.isDrawable() && !ds.isSelected(rel) && !rel.isDisabledAndHidden()) {
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163 | rel.accept(this);
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164 | }
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165 | }
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166 |
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167 | // draw tagged ways first, then untagged ways, then highlighted ways
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168 | List<Way> highlightedWays = new ArrayList<>();
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169 | List<Way> untaggedWays = new ArrayList<>();
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170 |
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171 | for (final Way way : data.searchWays(bbox)) {
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172 | if (way.isDrawable() && !ds.isSelected(way) && !way.isDisabledAndHidden()) {
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173 | if (way.isHighlighted()) {
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174 | highlightedWays.add(way);
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175 | } else if (!way.isTagged()) {
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176 | untaggedWays.add(way);
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177 | } else {
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178 | way.accept(this);
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179 | }
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180 | }
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181 | }
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182 | displaySegments();
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183 |
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184 | // Display highlighted ways after the other ones (fix #8276)
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185 | List<Way> specialWays = new ArrayList<>(untaggedWays);
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186 | specialWays.addAll(highlightedWays);
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187 | for (final Way way : specialWays) {
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188 | way.accept(this);
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189 | }
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190 | specialWays.clear();
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191 | displaySegments();
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192 |
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193 | for (final OsmPrimitive osm : data.getSelected()) {
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194 | if (osm.isDrawable()) {
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195 | osm.accept(this);
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196 | }
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197 | }
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198 | displaySegments();
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199 |
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200 | for (final OsmPrimitive osm: data.searchNodes(bbox)) {
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201 | if (osm.isDrawable() && !ds.isSelected(osm) && !osm.isDisabledAndHidden()) {
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202 | osm.accept(this);
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203 | }
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204 | }
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205 | drawVirtualNodes(data, bbox);
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206 |
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207 | // draw highlighted way segments over the already drawn ways. Otherwise each
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208 | // way would have to be checked if it contains a way segment to highlight when
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209 | // in most of the cases there won't be more than one segment. Since the wireframe
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210 | // renderer does not feature any transparency there should be no visual difference.
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211 | for (final WaySegment wseg : data.getHighlightedWaySegments()) {
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212 | drawSegment(nc.getPoint(wseg.getFirstNode()), nc.getPoint(wseg.getSecondNode()), highlightColor, false);
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213 | }
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214 | displaySegments();
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215 | }
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216 |
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217 | /**
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218 | * Helper function to calculate maximum of 4 values.
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219 | *
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220 | * @param a First value
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221 | * @param b Second value
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222 | * @param c Third value
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223 | * @param d Fourth value
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224 | */
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225 | private static int max(int a, int b, int c, int d) {
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226 | return Math.max(Math.max(a, b), Math.max(c, d));
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227 | }
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228 |
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229 | /**
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230 | * Draw a small rectangle.
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231 | * White if selected (as always) or red otherwise.
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232 | *
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233 | * @param n The node to draw.
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234 | */
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235 | @Override
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236 | public void visit(Node n) {
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237 | if (n.isIncomplete()) return;
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238 |
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239 | if (n.isHighlighted()) {
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240 | drawNode(n, highlightColor, selectedNodeSize, fillSelectedNode);
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241 | } else {
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242 | Color color;
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243 |
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244 | if (isInactiveMode || n.isDisabled()) {
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245 | color = inactiveColor;
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246 | } else if (n.isSelected()) {
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247 | color = selectedColor;
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248 | } else if (n.isMemberOfSelected()) {
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249 | color = relationSelectedColor;
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250 | } else if (n.isConnectionNode()) {
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251 | if (isNodeTagged(n)) {
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252 | color = taggedConnectionColor;
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253 | } else {
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254 | color = connectionColor;
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255 | }
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256 | } else {
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257 | if (isNodeTagged(n)) {
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258 | color = taggedColor;
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259 | } else {
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260 | color = nodeColor;
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261 | }
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262 | }
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263 |
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264 | final int size = max(ds.isSelected(n) ? selectedNodeSize : 0,
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265 | isNodeTagged(n) ? taggedNodeSize : 0,
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266 | n.isConnectionNode() ? connectionNodeSize : 0,
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267 | unselectedNodeSize);
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268 |
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269 | final boolean fill = (ds.isSelected(n) && fillSelectedNode) ||
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270 | (isNodeTagged(n) && fillTaggedNode) ||
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271 | (n.isConnectionNode() && fillConnectionNode) ||
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272 | fillUnselectedNode;
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273 |
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274 | drawNode(n, color, size, fill);
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275 | }
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276 | }
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277 |
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278 | private static boolean isNodeTagged(Node n) {
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279 | return n.isTagged() || n.isAnnotated();
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280 | }
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281 |
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282 | /**
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283 | * Draw a line for all way segments.
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284 | * @param w The way to draw.
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285 | */
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286 | @Override
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287 | public void visit(Way w) {
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288 | if (w.isIncomplete() || w.getNodesCount() < 2)
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289 | return;
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290 |
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291 | /* show direction arrows, if draw.segment.relevant_directions_only is not set, the way is tagged with a direction key
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292 | (even if the tag is negated as in oneway=false) or the way is selected */
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293 |
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294 | boolean showThisDirectionArrow = ds.isSelected(w) || showDirectionArrow;
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295 | /* head only takes over control if the option is true,
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296 | the direction should be shown at all and not only because it's selected */
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297 | boolean showOnlyHeadArrowOnly = showThisDirectionArrow && !ds.isSelected(w) && showHeadArrowOnly;
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298 | Color wayColor;
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299 |
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300 | if (isInactiveMode || w.isDisabled()) {
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301 | wayColor = inactiveColor;
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302 | } else if (w.isHighlighted()) {
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303 | wayColor = highlightColor;
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304 | } else if (w.isSelected()) {
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305 | wayColor = selectedColor;
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306 | } else if (w.isMemberOfSelected()) {
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307 | wayColor = relationSelectedColor;
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308 | } else if (!w.isTagged()) {
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309 | wayColor = untaggedWayColor;
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310 | } else {
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311 | wayColor = dfltWayColor;
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312 | }
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313 |
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314 | Iterator<Node> it = w.getNodes().iterator();
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315 | if (it.hasNext()) {
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316 | Point lastP = nc.getPoint(it.next());
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317 | for (int orderNumber = 1; it.hasNext(); orderNumber++) {
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318 | Point p = nc.getPoint(it.next());
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319 | drawSegment(lastP, p, wayColor,
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320 | showOnlyHeadArrowOnly ? !it.hasNext() : showThisDirectionArrow);
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321 | if (showOrderNumber && !isInactiveMode) {
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322 | drawOrderNumber(lastP, p, orderNumber, g.getColor());
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323 | }
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324 | lastP = p;
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325 | }
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326 | }
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327 | }
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328 |
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329 | /**
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330 | * Draw objects used in relations.
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331 | * @param r The relation to draw.
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332 | */
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333 | @Override
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334 | public void visit(Relation r) {
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335 | if (r.isIncomplete()) return;
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336 |
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337 | Color col;
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338 | if (isInactiveMode || r.isDisabled()) {
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339 | col = inactiveColor;
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340 | } else if (r.isSelected()) {
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341 | col = selectedColor;
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342 | } else if (r.isMultipolygon() && r.isMemberOfSelected()) {
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343 | col = relationSelectedColor;
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344 | } else {
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345 | col = relationColor;
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346 | }
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347 | g.setColor(col);
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348 |
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349 | for (RelationMember m : r.getMembers()) {
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350 | if (m.getMember().isIncomplete() || !m.getMember().isDrawable()) {
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351 | continue;
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352 | }
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353 |
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354 | if (m.isNode()) {
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355 | Point p = nc.getPoint(m.getNode());
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356 | if (p.x < 0 || p.y < 0
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357 | || p.x > nc.getWidth() || p.y > nc.getHeight()) {
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358 | continue;
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359 | }
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360 |
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361 | g.drawOval(p.x-4, p.y-4, 9, 9);
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362 | } else if (m.isWay()) {
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363 | GeneralPath path = new GeneralPath();
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364 |
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365 | boolean first = true;
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366 | for (Node n : m.getWay().getNodes()) {
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367 | if (!n.isDrawable()) {
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368 | continue;
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369 | }
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370 | Point p = nc.getPoint(n);
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371 | if (first) {
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372 | path.moveTo(p.x, p.y);
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373 | first = false;
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374 | } else {
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375 | path.lineTo(p.x, p.y);
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376 | }
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377 | }
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378 |
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379 | g.draw(relatedWayStroke.createStrokedShape(path));
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380 | }
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381 | }
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382 | }
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383 |
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384 | /**
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385 | * Visitor for changesets not used in this class
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386 | * @param cs The changeset for inspection.
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387 | */
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388 | @Override
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389 | public void visit(Changeset cs) {/* ignore */}
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390 |
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391 | @Override
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392 | public void drawNode(Node n, Color color, int size, boolean fill) {
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393 | if (size > 1) {
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394 | int radius = size / 2;
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395 | Point p = nc.getPoint(n);
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396 | if ((p.x < 0) || (p.y < 0) || (p.x > nc.getWidth())
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397 | || (p.y > nc.getHeight()))
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398 | return;
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399 | g.setColor(color);
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400 | if (fill) {
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401 | g.fillRect(p.x - radius, p.y - radius, size, size);
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402 | g.drawRect(p.x - radius, p.y - radius, size, size);
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403 | } else {
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404 | g.drawRect(p.x - radius, p.y - radius, size, size);
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405 | }
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406 | }
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407 | }
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408 |
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409 | /**
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410 | * Draw a line with the given color.
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411 | *
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412 | * @param path The path to append this segment.
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413 | * @param p1 First point of the way segment.
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414 | * @param p2 Second point of the way segment.
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415 | * @param showDirection <code>true</code> if segment direction should be indicated
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416 | */
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417 | protected void drawSegment(GeneralPath path, Point p1, Point p2, boolean showDirection) {
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418 | Rectangle bounds = g.getClipBounds();
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419 | bounds.grow(100, 100); // avoid arrow heads at the border
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420 | LineClip clip = new LineClip(p1, p2, bounds);
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421 | if (clip.execute()) {
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422 | p1 = clip.getP1();
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423 | p2 = clip.getP2();
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424 | path.moveTo(p1.x, p1.y);
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425 | path.lineTo(p2.x, p2.y);
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426 |
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427 | if (showDirection) {
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428 | final double l = 10. / p1.distance(p2);
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429 |
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430 | final double sx = l * (p1.x - p2.x);
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431 | final double sy = l * (p1.y - p2.y);
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432 |
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433 | path.lineTo(p2.x + (int) Math.round(cosPHI * sx - sinPHI * sy), p2.y + (int) Math.round(sinPHI * sx + cosPHI * sy));
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434 | path.moveTo(p2.x + (int) Math.round(cosPHI * sx + sinPHI * sy), p2.y + (int) Math.round(-sinPHI * sx + cosPHI * sy));
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435 | path.lineTo(p2.x, p2.y);
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436 | }
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437 | }
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438 | }
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439 |
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440 | /**
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441 | * Draw a line with the given color.
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442 | *
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443 | * @param p1 First point of the way segment.
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444 | * @param p2 Second point of the way segment.
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445 | * @param col The color to use for drawing line.
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446 | * @param showDirection <code>true</code> if segment direction should be indicated.
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447 | */
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448 | protected void drawSegment(Point p1, Point p2, Color col, boolean showDirection) {
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449 | if (col != currentColor) {
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450 | displaySegments(col);
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451 | }
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452 | drawSegment(currentPath, p1, p2, showDirection);
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453 | }
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454 |
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455 | /**
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456 | * Finally display all segments in currect path.
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457 | */
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458 | protected void displaySegments() {
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459 | displaySegments(null);
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460 | }
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461 |
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462 | /**
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463 | * Finally display all segments in currect path.
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464 | *
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465 | * @param newColor This color is set after the path is drawn.
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466 | */
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467 | protected void displaySegments(Color newColor) {
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468 | if (currentPath != null) {
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469 | g.setColor(currentColor);
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470 | g.draw(currentPath);
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471 | currentPath = new GeneralPath();
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472 | currentColor = newColor;
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473 | }
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474 | }
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475 | }
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