svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.buffer.impl / src / main / java / org / gvsig / raster / lib / buffer / impl / ClippedBuffer.java @ 44831
History | View | Annotate | Download (3.24 KB)
1 |
package org.gvsig.raster.lib.buffer.impl; |
---|---|
2 |
|
3 |
import java.awt.image.BufferedImage; |
4 |
import java.util.ArrayList; |
5 |
|
6 |
import org.slf4j.Logger; |
7 |
import org.slf4j.LoggerFactory; |
8 |
|
9 |
import org.gvsig.fmap.geom.primitive.Envelope; |
10 |
import org.gvsig.raster.lib.buffer.api.Band; |
11 |
import org.gvsig.raster.lib.buffer.api.Buffer; |
12 |
import org.gvsig.raster.lib.buffer.api.BufferLocator; |
13 |
import org.gvsig.raster.lib.buffer.api.BufferManager; |
14 |
import org.gvsig.raster.lib.buffer.api.exceptions.BandException; |
15 |
import org.gvsig.raster.lib.buffer.impl.exceptions.CreateBufferException; |
16 |
import org.gvsig.tools.ToolsLocator; |
17 |
import org.gvsig.tools.dispose.DisposeUtils; |
18 |
import org.gvsig.tools.exception.BaseException; |
19 |
|
20 |
|
21 |
/**
|
22 |
* This is like a view over a raster buffer.
|
23 |
* It's for rendering purposes only.
|
24 |
*
|
25 |
* @author fdiaz
|
26 |
*
|
27 |
*/
|
28 |
public class ClippedBuffer extends AbstractBuffer implements Buffer { |
29 |
|
30 |
protected static final Logger logger = LoggerFactory.getLogger(ClippedBuffer.class); |
31 |
|
32 |
Buffer buffer;
|
33 |
int firstRow;
|
34 |
int firstColumn;
|
35 |
|
36 |
|
37 |
/**
|
38 |
* @param buffer
|
39 |
* @param envelope
|
40 |
* @throws CreateBufferException
|
41 |
*/
|
42 |
public ClippedBuffer(Buffer buffer, Envelope envelope) throws CreateBufferException { |
43 |
ToolsLocator.getDisposableManager().bind(buffer); |
44 |
this.buffer = buffer;
|
45 |
try {
|
46 |
Envelope intersectionEnvelope = this.buffer.getEnvelope().getGeometry().intersection(envelope.getGeometry()).getEnvelope();
|
47 |
int rows = (int) Math.round(intersectionEnvelope.getLength(1) / this.buffer.getDimensions().getPixelSizeY()); |
48 |
rows = (rows==0)?1:rows; |
49 |
int columns = (int) Math.round(intersectionEnvelope.getLength(0) / this.buffer.getDimensions().getPixelSizeX()); |
50 |
columns = (columns==0)?1:columns; |
51 |
this.dimensions = BufferLocator.getBufferManager().createBufferDimensions(rows, columns, intersectionEnvelope);
|
52 |
|
53 |
this.firstRow =
|
54 |
(int) (Math.round((this.buffer.getEnvelope().getMaximum(1) - this.getEnvelope().getMaximum(1)) |
55 |
/ this.buffer.getDimensions().getPixelSizeY()));
|
56 |
this.firstColumn =
|
57 |
(int) (Math.round((this.getEnvelope().getMinimum(0) - this.buffer.getEnvelope().getMinimum(0)) |
58 |
/ this.buffer.getDimensions().getPixelSizeX()));
|
59 |
|
60 |
this.projection = buffer.getProjection();
|
61 |
|
62 |
this.bands = new ArrayList<Band>(); |
63 |
|
64 |
createBands(this.buffer.getBands());
|
65 |
} catch (Exception e) { |
66 |
throw new CreateBufferException(e); |
67 |
} |
68 |
|
69 |
} |
70 |
|
71 |
private void createBands(Band[] bands) throws BandException { |
72 |
BufferManager bufferManager = BufferLocator.getBufferManager(); |
73 |
|
74 |
for (int i = 0; i < bands.length; i++) { |
75 |
Band band = bufferManager.createClippedBand(this, bands[i]);
|
76 |
this.bands.add(band);
|
77 |
band.addObserver(this);
|
78 |
|
79 |
} |
80 |
} |
81 |
|
82 |
protected int getFirstRow(){ |
83 |
return this.firstRow; |
84 |
} |
85 |
|
86 |
protected int getFirstColumn(){ |
87 |
return this.firstColumn; |
88 |
} |
89 |
|
90 |
@Override
|
91 |
public void doDispose() throws BaseException { |
92 |
super.doDispose();
|
93 |
DisposeUtils.dispose(buffer); |
94 |
buffer=null;
|
95 |
} |
96 |
|
97 |
@Override
|
98 |
public BufferedImage getBufferedImage() { |
99 |
return null; |
100 |
} |
101 |
|
102 |
} |