1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
package de.lmu.ifi.dbs.elki.visualization.style.marker;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Element;
import de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary;
import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil;
/**
* Marker library achieving a larger number of styles by combining different
* shapes with different colors. Uses object ID management by SVGPlot.
*
* @author Erich Schubert
* @since 0.4.0
*
* @apiviz.composedOf ColorLibrary
*/
public class PrettyMarkers implements MarkerLibrary {
/**
* Color library
*/
private ColorLibrary colors;
/**
* Default prefix to use.
*/
private static final String DEFAULT_PREFIX = "s";
/**
* Prefix for the IDs generated.
*/
private String prefix;
/**
* Color of "uncolored" dots
*/
private String dotcolor;
/**
* Color of "greyed out" dots
*/
private String greycolor;
/**
* Constructor
*
* @param prefix prefix to use.
* @param style style library to use
*/
public PrettyMarkers(String prefix, StyleLibrary style) {
this.prefix = prefix;
this.colors = style.getColorSet(StyleLibrary.MARKERPLOT);
this.dotcolor = style.getColor(StyleLibrary.MARKERPLOT);
this.greycolor = style.getColor(StyleLibrary.PLOTGREY);
}
/**
* Constructor without prefix argument, will use {@link #DEFAULT_PREFIX} as
* prefix.
*
* @param style Style library to use
*/
public PrettyMarkers(StyleLibrary style) {
this(DEFAULT_PREFIX, style);
}
/**
* Draw an marker used in scatter plots. If you intend to use the markers
* multiple times, you should consider using the {@link #useMarker} method
* instead, which exploits the SVG features of symbol definition and use
*
* @param plot containing plot
* @param parent parent node
* @param x position
* @param y position
* @param style marker style (enumerated)
* @param size size
*/
public void plotMarker(SVGPlot plot, Element parent, double x, double y, int style, double size) {
assert (parent != null);
if (style == -1) {
plotUncolored(plot, parent, x, y, size);
return;
}
if (style == -2) {
plotGray(plot, parent, x, y, size);
return;
}
// TODO: add more styles.
String colorstr = colors.getColor(style);
String strokestyle = SVGConstants.CSS_STROKE_PROPERTY + ":" + colorstr + ";" + SVGConstants.CSS_STROKE_WIDTH_PROPERTY + ":" + SVGUtil.fmt(size / 6);
switch(style % 8){
case 0: {
// + cross
Element line1 = plot.svgLine(x, y - size / 2.2, x, y + size / 2.2);
SVGUtil.setStyle(line1, strokestyle);
parent.appendChild(line1);
Element line2 = plot.svgLine(x - size / 2.2, y, x + size / 2.2, y);
SVGUtil.setStyle(line2, strokestyle);
parent.appendChild(line2);
break;
}
case 1: {
// X cross
Element line1 = plot.svgLine(x - size / 2.828427, y - size / 2.828427, x + size / 2.828427, y + size / 2.828427);
SVGUtil.setStyle(line1, strokestyle);
parent.appendChild(line1);
Element line2 = plot.svgLine(x - size / 2.828427, y + size / 2.828427, x + size / 2.828427, y - size / 2.828427);
SVGUtil.setStyle(line2, strokestyle);
parent.appendChild(line2);
break;
}
case 2: {
// O hollow circle
Element circ = plot.svgCircle(x, y, size / 2.2);
SVGUtil.setStyle(circ, "fill: none;" + strokestyle);
parent.appendChild(circ);
break;
}
case 3: {
// [] hollow rectangle
Element rect = plot.svgRect(x - size / 2.4, y - size / 2.4, size / 1.2, size / 1.2);
SVGUtil.setStyle(rect, "fill: none;" + strokestyle);
parent.appendChild(rect);
break;
}
case 4: {
// <> hollow diamond
Element rect = plot.svgRect(x - size / 2.7, y - size / 2.7, size / 1.35, size / 1.35);
SVGUtil.setStyle(rect, "fill: none;" + strokestyle);
SVGUtil.setAtt(rect, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, "rotate(45," + SVGUtil.fmt(x) + "," + SVGUtil.fmt(y) + ")");
parent.appendChild(rect);
break;
}
case 5: {
// O filled circle
Element circ = plot.svgCircle(x, y, size * .5);
SVGUtil.setStyle(circ, SVGConstants.CSS_FILL_PROPERTY + ":" + colorstr);
parent.appendChild(circ);
break;
}
case 6: {
// [] filled rectangle
Element rect = plot.svgRect(x - size / 2.2, y - size / 2.2, size / 1.1, size / 1.1);
SVGUtil.setStyle(rect, "fill:" + colorstr);
parent.appendChild(rect);
break;
}
case 7: {
// <> filled diamond
Element rect = plot.svgRect(x - size / 2.5, y - size / 2.5, size / 1.25, size / 1.25);
SVGUtil.setStyle(rect, "fill:" + colorstr);
SVGUtil.setAtt(rect, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, "rotate(45," + SVGUtil.fmt(x) + "," + SVGUtil.fmt(y) + ")");
parent.appendChild(rect);
break;
}
}
}
/**
* Plot a replacement marker when an object is to be plotted as "disabled", usually gray.
*
* @param plot Plot to draw to
* @param parent Parent element
* @param x X position
* @param y Y position
* @param size Size
*/
protected void plotGray(SVGPlot plot, Element parent, double x, double y, double size) {
Element marker = plot.svgCircle(x, y, size * .5);
SVGUtil.setStyle(marker, SVGConstants.CSS_FILL_PROPERTY + ":" + greycolor);
parent.appendChild(marker);
}
/**
* Plot a replacement marker when no color is set; usually black
*
* @param plot Plot to draw to
* @param parent Parent element
* @param x X position
* @param y Y position
* @param size Size
*/
protected void plotUncolored(SVGPlot plot, Element parent, double x, double y, double size) {
Element marker = plot.svgCircle(x, y, size * .5);
SVGUtil.setStyle(marker, SVGConstants.CSS_FILL_PROPERTY + ":" + dotcolor);
parent.appendChild(marker);
}
@Override
public Element useMarker(SVGPlot plot, Element parent, double x, double y, int style, double size) {
String id = prefix + style + "_" + size;
Element existing = plot.getIdElement(id);
if(existing == null) {
Element symbol = plot.svgElement(SVGConstants.SVG_SYMBOL_TAG);
SVGUtil.setAtt(symbol, SVGConstants.SVG_ID_ATTRIBUTE, id);
plotMarker(plot, symbol, 2 * size, 2 * size, style, 2 * size);
plot.getDefs().appendChild(symbol);
plot.putIdElement(id, symbol);
}
Element use = plot.svgElement(SVGConstants.SVG_USE_TAG);
use.setAttributeNS(SVGConstants.XLINK_NAMESPACE_URI, SVGConstants.XLINK_HREF_QNAME, "#" + id);
SVGUtil.setAtt(use, SVGConstants.SVG_X_ATTRIBUTE, x - 2 * size);
SVGUtil.setAtt(use, SVGConstants.SVG_Y_ATTRIBUTE, y - 2 * size);
if(parent != null) {
parent.appendChild(use);
}
return use;
}
}
|
