source: osm/applications/editors/josm/plugins/smed2/src/seamap/Renderer.java@ 29199

Last change on this file since 29199 was 29199, checked in by malcolmh, 12 years ago

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1/* Copyright 2013 Malcolm Herring
2 *
3 * This is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, version 3 of the License.
6 *
7 * For a copy of the GNU General Public License, see <http://www.gnu.org/licenses/>.
8 */
9
10package seamap;
11
12import java.awt.BasicStroke;
13import java.awt.Graphics2D;
14import java.awt.RenderingHints;
15import java.awt.geom.GeneralPath;
16import java.awt.geom.Path2D;
17import java.awt.geom.Point2D;
18import java.util.ArrayList;
19import java.util.HashMap;
20
21import s57.S57att.Att;
22import s57.S57obj.Obj;
23import s57.S57val.*;
24import s57.S57val;
25import seamap.SeaMap;
26import seamap.SeaMap.*;
27import symbols.Symbols;
28import symbols.Symbols.*;
29
30public class Renderer {
31
32 static MapHelper helper;
33 static SeaMap map;
34 static double sScale;
35 static double tScale;
36 static Graphics2D g2;
37 static int zoom;
38
39 public static void reRender(Graphics2D g, int z, double factor, SeaMap m, MapHelper h) {
40 g2 = g;
41 zoom = z;
42 helper = h;
43 map = m;
44 sScale = Symbols.symbolScale[zoom]*factor;
45 tScale = Symbols.textScale[zoom]*factor;
46 if (map != null) {
47 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
48 g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
49 Rules.rules(map, zoom);
50 }
51 }
52
53 public static AttMap getAtts(Feature feature, Obj obj, int idx) {
54 HashMap<Integer, AttMap> objs = feature.objs.get(obj);
55 if (objs == null) return null;
56 else return objs.get(idx);
57 }
58
59 public static Object getAttVal(Feature feature, Obj obj, int idx, Att att) {
60 AttMap atts = getAtts(feature, obj, idx);
61 if (atts == null) return S57val.nullVal(att);
62 else {
63 AttItem item = atts.get(att);
64 if (item == null) return S57val.nullVal(att);
65 return item.val;
66 }
67 }
68
69 public static double calcArea(Feature feature) {
70 if (feature.flag == Fflag.AREA) {
71 ArrayList<Long> way = map.ways.get(feature.refs);
72 Coord coord = map.nodes.get(way.get(0));
73 double llon = coord.lon;
74 double llat = coord.lat;
75 double sigma = 0.0;
76 for (long node : way) {
77 coord = map.nodes.get(node);
78 double lat = coord.lat;
79 double lon = coord.lon;
80 sigma += (lon * Math.sin(llat)) - (llon * Math.sin(lat));
81 llon = lon;
82 llat = lat;
83 }
84 return Math.abs(sigma) * 3444 * 3444 / 2.0;
85 }
86 return 0.0;
87 }
88
89 public static Coord findCentroid(Feature feature) {
90 Coord coord;
91 ArrayList<Long> way = map.ways.get(feature.refs);
92 switch (feature.flag) {
93 case NODE:
94 return map.nodes.get(feature.refs);
95 case WAY:
96 coord = map.nodes.get(way.get(1));
97 break;
98 case AREA:
99 default:
100 coord = map.nodes.get(way.get(0));
101 }
102 double slat = 0.0;
103 double slon = 0.0;
104 double sarc = 0.0;
105 double llat = coord.lat;
106 double llon = coord.lon;
107 for (long node : way) {
108 coord = map.nodes.get(node);
109 double lon = coord.lon;
110 double lat = coord.lat;
111 double arc = (Math.acos(Math.cos(lon-llon) * Math.cos(lat-llat)));
112 slat += (lat * arc);
113 slon += (lon * arc);
114 sarc += arc;
115 llat = lat;
116 llon = lon;
117 }
118 return map.new Coord((sarc > 0.0 ? slat/sarc : 0.0), (sarc > 0.0 ? slon/sarc : 0.0));
119 }
120
121 public static void symbol(Feature feature, Symbol symbol, Obj obj, Delta delta) {
122 Point2D point = helper.getPoint(findCentroid(feature));
123 if (obj == null) {
124 Symbols.drawSymbol(g2, symbol, sScale, point.getX(), point.getY(), delta, null);
125 } else {
126 ArrayList<ColCOL> colours = (ArrayList<ColCOL>) getAttVal(feature, obj, 0, Att.COLOUR);
127 ArrayList<ColPAT> pattern = (ArrayList<ColPAT>) getAttVal(feature, obj, 0, Att.COLPAT);
128 Symbols.drawSymbol(g2, symbol, sScale, point.getX(), point.getY(), delta, new Scheme(pattern, colours));
129 }
130 }
131
132 public static void lineSymbols(Feature feature, Symbol prisymb, double space, Symbol secsymb, int ratio) {
133 if (feature.flag != Fflag.NODE) {
134 ArrayList<Long> way = map.ways.get(feature.refs);
135 for (long node : way) {
136 Point2D point = helper.getPoint(map.nodes.get(node));
137
138 }
139 }
140 }
141
142 public static void lineVector (Feature feature, LineStyle style) {
143 if (feature.flag != Fflag.NODE) {
144 ArrayList<Long> nodes = map.ways.get(feature.refs);
145 Path2D.Double p = new Path2D.Double();
146 p.setWindingRule(GeneralPath.WIND_NON_ZERO);
147 boolean first = true;
148 for (long node : nodes) {
149 Point2D point = helper.getPoint(map.nodes.get(node));
150 if (first) {
151 p.moveTo(point.getX(), point.getY());
152 first = false;
153 } else {
154 p.lineTo(point.getX(), point.getY());
155 }
156 }
157 if (style.line != null) {
158 if (style.dash != null) {
159 float[] dash = new float[style.dash.length];
160 System.arraycopy(style.dash, 0, dash, 0, style.dash.length);
161 for (int i = 0; i < style.dash.length; i++) {
162 dash[i] *= (float) (sScale);
163 }
164 g2.setStroke(new BasicStroke((float) (style.width * sScale), BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 1, dash, 0));
165 } else {
166 g2.setStroke(new BasicStroke((float) (style.width * sScale), BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND));
167 }
168 g2.setPaint(style.line);
169 g2.draw(p);
170 }
171 if (style.fill != null) {
172 g2.setPaint(style.fill);
173 g2.fill(p);
174 }
175 }
176 }
177
178 public static void labelText (Feature feature, String str, TextStyle style, Delta delta) {
179
180 }
181
182 public static void lineText (Feature feature, String str, TextStyle style, double offset, Delta delta) {
183
184 }
185}
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