Revision 184 trunk/libraries/libCq CMS for java.old/src/org/cresques/io/EcwFile.java
| EcwFile.java | ||
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import com.ermapper.ecw.JNCSFileNotOpenException; |
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import com.ermapper.ecw.JNCSProgressiveUpdate; |
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import com.ermapper.util.JNCSDatasetPoint; |
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import com.ermapper.util.JNCSWorldPoint; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.cresques.px.*; |
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/** |
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* Filtro para raster. |
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* Permite eliminar la franja inutil alrededor de un raster girado o de |
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* un mosaico de borde irregular. |
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* |
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* Funciona bien solo con raster en tonos de gris, porque se basa que |
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* el valor del pixel no supere un determinado valor 'umbral' que se |
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* le pasa al constructor. |
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* |
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es> |
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*/ |
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class PixelFilter {
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boolean debug = false; |
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int transparente = 0x10ffff00; |
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int orColor = 0xff000000; |
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int umbral = 0xf0f0f0; |
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private int alpha = 0xff; |
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/** |
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* Constructor para el Oleico |
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*/ |
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public PixelFilter(int alpha) {
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transparente = 0x10ffff00; |
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setAlpha(alpha); |
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//orColor = 0xff000000 | (alpha * 0x1000000); |
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umbral = 0xf0f0f0; |
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} |
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/** |
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* Constructor. |
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* |
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* @param trans Color que sustituye a los pixeles filtrados |
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* @param or M?scara que se aplica a los pixeles restantes |
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* @param pxMax Umbral que determina los pixeles. |
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*/ |
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public PixelFilter(int trans, int or, int pxMax) {
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transparente = trans; |
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setAlpha(orColor / 0x1000000); |
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orColor = or; |
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umbral = pxMax; |
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} |
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public void setAlpha(int alpha) {
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this.alpha = alpha; |
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orColor = alpha * 0x1000000; |
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} |
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public int getAlpha() { return alpha; }
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/** |
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* Filtra una l?nea de pixeles. |
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* |
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* @param pRGBArray |
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*/ |
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public void filterLine(int [] pRGBArray) {
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for (int i=0; i<pRGBArray.length; i++) {
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if (debug) |
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System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+",");
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if (pRGBArray[i] >= umbral) |
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pRGBArray[i] = transparente; |
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else |
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pRGBArray[i] |= orColor; |
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} |
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if (debug) |
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System.out.println("");
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} |
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} |
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class SimplePixelFilter extends PixelFilter {
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public SimplePixelFilter(int alpha) {
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super(alpha); |
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} |
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public void filterLine(int [] pRGBArray) {
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for (int i=0; i<pRGBArray.length; i++) {
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if (debug) |
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System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+",");
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pRGBArray[i] |= orColor; |
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} |
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if (debug) |
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System.out.println("");
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} |
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} |
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/** |
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* Soporte para los ficheros .ecw de ErMapper. |
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* <br> |
| ... | ... | |
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private String errorMessage = null; |
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private Extent v = null; |
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private boolean doTransparency = false; |
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private int alpha = 0; |
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private PixelFilter tFilter = null; |
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// Ultimo porcentaje de refresco. Se carga en el update y se |
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// actualiza en el refreshUpdate |
| ... | ... | |
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public int getHeight() { return file.height; }
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/** |
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* Trozo de imagen en que se divide la consulta a la librer?a, |
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* Trozo de imagen (Chunk) en que se divide la consulta a la librer?a,
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* para esquivar el bug#2. |
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* |
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* @author luisw |
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*/ |
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static class ChunkFrame {
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// Ancho m?ximo (~2500 px) |
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final static int MAX_WIDTH = 1024;
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final static int MAX_WIDTH = 1536;
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// Alto m?ximo (no hay l?mite) |
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final static int MAX_HEIGHT = 20000; |
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Point pos; |
| ... | ... | |
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// TODO Mejorarlo para que los PAN con un zoom muy grande sean correctos |
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if ((ptMax.x-ptMin.x)<sz.width) {
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numCol = numRow = 1; |
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frames[0] = new ChunkFrame(v, ptMax.x-ptMin.x, ptMin.y-ptMax.y); |
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f = frames[0] = new ChunkFrame(v, ptMax.x-ptMin.x, ptMin.y-ptMax.y);
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System.out.println("Size=("+f.width+","+f.height+")");
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frames[0].mustResize = true; |
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f.pos = new Point(0,0); |
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f.mustResize = true; |
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f.v = new Extent(v); |
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} else {
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// Calcula cada chunk |
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double step = ((double) ptMax.x-ptMin.x)/sz.getWidth(); |
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int h = sz.height; |
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for (int r=0; r<numRow; r++) {
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int w = sz.width; |
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for (int c = 0; c<numCol; c++) {
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f = new ChunkFrame(null, -1, -1); |
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// Posici?n del chunk |
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f.pos = new Point(c*MAX_WIDTH, r*MAX_HEIGHT); |
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// Tama?o del chunk |
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f.width = Math.min(MAX_WIDTH, sz.width);
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f.height = Math.min(MAX_WIDTH, sz.height);
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f.width = Math.min(MAX_WIDTH, w);
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f.height = Math.min(MAX_WIDTH, h);
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// Extent del chunk |
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int x1 = ptMin.x+(int) (f.pos.x*step); |
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int x2 = x1+(int)(f.width*step); |
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int y1 = ptMax.y; |
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int y2 = ptMin.y; |
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JNCSWorldPoint pt1 = file.convertDatasetToWorld(x1, y1); |
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JNCSWorldPoint pt2 = file.convertDatasetToWorld(x2, y2); |
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f.v = new Extent(pt1.x, pt1.y, pt2.x, pt2.y); // Hay que calcularlo |
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System.out.println(" View DataSet = ("+x1+","+y1+","+x2+","+y2+")");
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System.out.println(" View Extent = "+ v);
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System.out.println("Frame Extent = "+ f.v);
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frames[r*numCol+c] = f; |
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w -= MAX_WIDTH; |
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} |
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h -= MAX_HEIGHT; |
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} |
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} |
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System.out.println("Hay "+numRow+" filas y "+numCol+" columnas.");
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return frames; |
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} |
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} |
| ... | ... | |
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} |
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fullSize = new Dimension(width, height); |
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// Create an image of the ecw file. |
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if (doTransparency) |
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ecwImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
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else |
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ecwImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); |
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// Peta en los peque?os ... arreglar antes de meter del todo |
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ChunkFrame frames[] = ChunkFrame.computeFrames(file, v, fullSize); |
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if (frames.length == 1) {
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width = frames[0].width; height = frames[0].height; |
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//System.out.println("Cambio el ancho total a ("+width+","+height+")");
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} |
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JNCSDatasetPoint ptMin = file.convertWorldToDataset(v.minX(), v.minY()); |
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/* JNCSDatasetPoint ptMin = file.convertWorldToDataset(v.minX(), v.minY());
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JNCSDatasetPoint ptMax = file.convertWorldToDataset(v.maxX(), v.maxY()); |
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System.out.println("Dataset coords Width = "+(ptMax.x-ptMin.x)+", px width ="+width);
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// BEGIN Cambiando para soportar e < 1:1 |
| ... | ... | |
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height = ptMin.y-ptMax.y; |
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System.out.println("Size=("+width+","+height+")");
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mustResize = true; |
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} |
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// END Cambiando para soportar e < 1:1 |
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}*/ |
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// Create an image of the ecw file. |
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if (doTransparency) |
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ecwImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
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else |
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ecwImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); |
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pRGBArray = new int[width]; |
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|
| ... | ... | |
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bandlist[i] = i; |
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} |
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// Set the view |
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file.setView(file.numBands, bandlist, |
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v.minX(), v.maxY(), v.maxX(), v.minY(), |
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width, height); |
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// Read the scan lines |
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for (line=0; line < height; line++) {
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file.readLineRGBA(pRGBArray); |
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// Prueba de sustituci?n de color transparente |
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if (doTransparency) {
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if (line == 0) tFilter.debug = true; |
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tFilter.filterLine(pRGBArray); |
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tFilter.debug = false; |
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for (int nChunk=0; nChunk<frames.length; nChunk++) {
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ChunkFrame f = frames[nChunk]; |
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// Set the view |
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file.setView(file.numBands, bandlist, |
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f.v.minX(), f.v.maxY(), f.v.maxX(), f.v.minY(), |
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f.width, f.height); |
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// Read the scan lines |
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for (line=0; line < height; line++) {
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file.readLineRGBA(pRGBArray); |
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// Prueba de sustituci?n de color transparente |
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if (doTransparency) {
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if (line == 0) tFilter.debug = true; |
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tFilter.filterLine(pRGBArray); |
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tFilter.debug = false; |
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} |
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//System.out.println("setRGB("+f.pos.x+","+f.pos.y+line+","+f.width+","+1+","+pRGBArray+","+0+","+f.width+")");
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((BufferedImage)ecwImage).setRGB(f.pos.x, f.pos.y+line, f.width, 1, pRGBArray, 0, f.width); |
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} |
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((BufferedImage)ecwImage).setRGB(0, line, width, 1, pRGBArray, 0, width); |
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} |
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if (frames[0].mustResize) {
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//System.out.println("resize "+fullSize);
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return resizeImage(fullSize, ecwImage); |
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} |
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/* |
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* La excepci?n atrapada es la de 'zoom > 1:1 no valido' |
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} catch (com.ermapper.ecw.JNCSInvalidSetViewException e) {
|
| ... | ... | |
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e.printStackTrace(); |
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} |
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lastRefreshPercent = file.getPercentComplete(); |
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if (mustResize) {
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return resizeImage(fullSize, ecwImage); |
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} |
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return ecwImage; |
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} |
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