Revision: 6509
http://sourceforge.net/p/jump-pilot/code/6509
Author: ma15569
Date: 2020-09-22 09:39:49 +0000 (Tue, 22 Sep 2020)
Log Message:
-----------
Added two methods (from Sextante and from AdbToolbox) to rasterize a vector
layer. Those methods are modified in order to speed up thye process and to
retrive a valid output
Added Paths:
-----------
core/trunk/src/org/openjump/core/rasterimage/algorithms/RasterizeAlgorithm.java
Added:
core/trunk/src/org/openjump/core/rasterimage/algorithms/RasterizeAlgorithm.java
===================================================================
---
core/trunk/src/org/openjump/core/rasterimage/algorithms/RasterizeAlgorithm.java
(rev 0)
+++
core/trunk/src/org/openjump/core/rasterimage/algorithms/RasterizeAlgorithm.java
2020-09-22 09:39:49 UTC (rev 6509)
@@ -0,0 +1,532 @@
+package org.openjump.core.rasterimage.algorithms;
+
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+
+import org.openjump.core.rasterimage.RasterImageIO;
+import org.openjump.core.rasterimage.sextante.rasterWrappers.GridCell;
+import org.openjump.core.rasterimage.sextante.rasterWrappers.GridExtent;
+import org.openjump.core.rasterimage.sextante.rasterWrappers.GridRasterWrapper;
+
+import com.vividsolutions.jts.geom.Coordinate;
+import com.vividsolutions.jts.geom.Envelope;
+import com.vividsolutions.jts.geom.Geometry;
+import com.vividsolutions.jts.geom.GeometryCollection;
+import com.vividsolutions.jts.geom.GeometryFactory;
+import com.vividsolutions.jts.geom.LinearRing;
+import com.vividsolutions.jts.geom.Polygon;
+import com.vividsolutions.jump.feature.Feature;
+import com.vividsolutions.jump.feature.FeatureCollection;
+import com.vividsolutions.jump.feature.FeatureDataset;
+import com.vividsolutions.jump.feature.FeatureSchema;
+
+
+/**
+ *
+ * @author Giuseppe Aruta
+ * a class to port two methods to rasterize a FeatureCollection
+ * - from Sextante (https://joinup.ec.europa.eu/solution/sextante/about)
+ * - from AdbToolbox (http://www.pcn.minambiente.it/mattm/adb-toolbox/)
+ */
+
+
+public class RasterizeAlgorithm {
+
+ private static Double NO_DATA;
+ private static Double cellSize;
+ private static double dValue;
+ private static int m_iNX;
+ private static int m_iNY;
+
+ //private static OpenJUMPSextanteRasterLayer sRasterLayer;
+ private static GridExtent m_Extent;
+
+
+ static WritableRaster raster;
+
+
+ /**
+ * Method to rasterize a FeatureCollection using AdBToolbox framework
+ * @TODO check why the output shows non exact values
+ * @param file
+ * @param Envelope limitEnvelope
+ * @param Layer m_Layer
+ * @param String attributeName
+ * @param double CellSize
+ * @param double NoData
+ * @throws IOException
+
+ */
+
+ public static void Rasterize_AdbToolbox(File file, Envelope
limitEnvelope, FeatureCollection fCollection, String attributeName, double
CellSize, double NoData) throws IOException {
+ NO_DATA=NoData;
+ cellSize=CellSize;
+ m_Extent= new GridExtent();
+ m_Extent.setCellSize(CellSize, CellSize);
+ m_Extent.setXRange(limitEnvelope.getMinX(),
limitEnvelope.getMaxX());
+ m_Extent.setYRange(limitEnvelope.getMinY(),
limitEnvelope.getMaxY());
+
+ m_iNX = m_Extent.getNX();
+ m_iNY = m_Extent.getNY();
+ double[][] valori= new double[m_iNX][m_iNY];
+
+ for (int x = 0; x < m_iNX; x++){
+ for (int y = 0; y < m_iNY; y++){
+ valori[x][y]=NoData;
+
+ }
+ }
+
+ raster = GridRasterWrapper.matrixToRaster(valori);
+ BufferedImage bimage = new BufferedImage(m_iNX, m_iNY,
BufferedImage.TYPE_INT_ARGB);
+ bimage.setAccelerationPriority(1.0f);
+ Graphics2D graphics = bimage.createGraphics();
+
+ Coordinate[] coord;
+ int[] coordGridX;
+ int[] coordGridY;
+
+ Color color = new Color(100);
+ graphics.setPaint(color);
+ graphics.setPaintMode();
+
+
+
+
+ final Coordinate[] coords = new Coordinate[5];
+ coords[0] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMinY());
+ coords[1] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMaxY());
+ coords[2] = new
Coordinate(limitEnvelope.getMaxX(),limitEnvelope.getMaxY());
+ coords[3] = new
Coordinate(limitEnvelope.getMaxX(),limitEnvelope.getMinY());
+ coords[4] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMinY());
+
+
+ final GeometryFactory gf = new GeometryFactory();
+ final LinearRing ring = gf.createLinearRing(coords);
+ final Polygon extent = gf.createPolygon(ring, null);
+
+
+ List<Feature> inputC = fCollection.getFeatures();
+ FeatureSchema schema = fCollection.getFeatureSchema();
+ FeatureDataset inputFC = new FeatureDataset(inputC, schema);
+ for (Iterator<Feature> it = inputFC.iterator() ; it.hasNext() ; )
{
+ Feature f = it.next();
+ dValue =
Double.parseDouble(f.getAttribute(attributeName).toString());
+ final Geometry geom = f.getGeometry();
+
+ if (geom.intersects(extent)) {
+ for(int g=0; g<geom.getNumGeometries(); g++){
+ // Check if polygons has holes
+
if(geom.getGeometryN(g).getGeometryType().equals("Polygon")){
+ Polygon polygon = (Polygon) geom.getGeometryN(g);
+ java.awt.geom.Area awtArea;
+ if(polygon.getNumInteriorRing() > 0){
+ // Holes found
+ // Exterior ring
+ coord = polygon.getExteriorRing().getCoordinates();
+ coordGridX = new int[coord.length];
+ coordGridY = new int[coord.length];
+
+ // From geographic coords to image coords
+ for(int p=0; p<coord.length; p++){
+ java.awt.Point point =
fromCoordToCell(coord[p], CellSize, extent);
+ coordGridX[p] = point.x;
+ coordGridY[p] = point.y;
+ }
+
+ java.awt.Polygon awtPolygon = new
java.awt.Polygon(coordGridX, coordGridY, coord.length);
+ awtArea = new
java.awt.geom.Area(awtPolygon);
+
+ // Subtract inner rings
+ for(int ir=0;
ir<polygon.getNumInteriorRing(); ir++){
+ coord =
polygon.getInteriorRingN(ir).getCoordinates();
+ coordGridX = new int[coord.length];
+ coordGridY = new int[coord.length];
+ // From geographic coords to image
coords
+ for(int p=0; p<coord.length; p++){
+ java.awt.Point point =
fromCoordToCell(coord[p], CellSize, extent);
+ coordGridX[p] = point.x;
+ coordGridY[p] = point.y;
+ }
+ awtPolygon = new
java.awt.Polygon(coordGridX, coordGridY, coord.length);
+ java.awt.geom.Area awtArea2 = new
java.awt.geom.Area(awtPolygon);
+ awtArea.subtract(awtArea2);
+ }
+ }else{
+ coord = polygon.getCoordinates();
+ coordGridX = new int[coord.length];
+ coordGridY = new int[coord.length];
+
+ // From geographic coords to image coords
+ for(int p=0; p<coord.length; p++){
+ java.awt.Point point =
fromCoordToCell(coord[p], CellSize, extent);
+ coordGridX[p] = point.x;
+ coordGridY[p] = point.y;
+ }
+ java.awt.Polygon awtPolygon = new
java.awt.Polygon(coordGridX, coordGridY, coord.length);
+ awtArea = new
java.awt.geom.Area(awtPolygon);
+ }
+
+ graphics.setPaint(color);
+ graphics.setPaintMode();
+ graphics.draw(awtArea);
+ graphics.fill(awtArea);
+
+ }else{
+ coord = geom.getGeometryN(g).getCoordinates();
+ coordGridX = new int[coord.length];
+ coordGridY = new int[coord.length];
+
+ // From geographic coords to image coords
+ for(int p=0; p<coord.length; p++){
+ java.awt.Point point =
fromCoordToCell(coord[p], CellSize, extent);
+ coordGridX[p] = point.x;
+ coordGridY[p] = point.y;
+ }
+
if(geom.getGeometryN(g).getGeometryType().equals("LineString") ||
geom.getGeometryN(g).getGeometryType().equals("MultiLineString")){
+ graphics.setPaint(color);
+ graphics.setPaintMode();
+ graphics.drawPolyline(coordGridX,
coordGridY, coord.length);
+ }else
if(geom.getGeometryN(g).getGeometryType().equals("Point") ||
geom.getGeometryN(g).getGeometryType().equals("MultiPoint")){
+ graphics.setPaint(color);
+ graphics.setPaintMode();
+ graphics.fillRect(coordGridX[0],
coordGridY[0], 1, 1);
+ }
+ }
+ }
+ }
+ }
+ for (int x=0; x < m_iNX; x++ ) {
+ for (int y=0; y < m_iNY; y++ ) {
+ if(bimage.getRGB(x, y) != 0 && bimage.getRGB(x, y) !=
-1){
+ raster.setSample(x, y, 0, dValue);
+ }
+ }
+ }
+
+
+ RasterImageIO rasterImageIO = new RasterImageIO();
+ rasterImageIO.writeImage(file, raster, limitEnvelope,
+ rasterImageIO.new CellSizeXY(CellSize, CellSize),
NoData);
+
+ }
+
+
+ private static java.awt.Point fromCoordToCell(Coordinate coord,
double CellSize, Polygon extent){
+ Envelope env = extent.getEnvelopeInternal();
+ int x = (int)((coord.x - env.getMinX()) / CellSize);
+ int y = (int)((coord.y - env.getMinY()) / CellSize);
+
+ return new java.awt.Point(x, y);
+
+ }
+
+
+
+
+
+ /**
+ * Method to rasterize a FeatureCollection using Sextante framework
+ * @param file
+ * @param Envelope limitEnvelope
+ * @param Layer m_Layer
+ * @param String attributeName
+ * @param double CellSize
+ * @param double NoData
+ * @throws IOException
+ */
+ public static void Rasterize_Sextante(File file, Envelope
limitEnvelope, FeatureCollection fCollection,
+ String attributeName, double CellSize, double
NoData) throws IOException {
+ NO_DATA=NoData;
+ cellSize=CellSize;
+ m_Extent= new GridExtent();
+ m_Extent.setCellSize(CellSize, CellSize);
+ m_Extent.setXRange(limitEnvelope.getMinX(),
limitEnvelope.getMaxX());
+ m_Extent.setYRange(limitEnvelope.getMinY(),
limitEnvelope.getMaxY());
+
+ m_iNX = m_Extent.getNX();
+ m_iNY = m_Extent.getNY();
+ double[][] valori= new double[m_iNX][m_iNY];
+
+ for (int x = 0; x < m_iNX; x++){
+ for (int y = 0; y < m_iNY; y++){
+ valori[x][y]=NoData;
+
+ }
+ }
+
+ raster = GridRasterWrapper.matrixToRaster(valori);
+
+
+
+ final Coordinate[] coords = new Coordinate[5];
+ coords[0] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMinY());
+ coords[1] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMaxY());
+ coords[2] = new
Coordinate(limitEnvelope.getMaxX(),limitEnvelope.getMaxY());
+ coords[3] = new
Coordinate(limitEnvelope.getMaxX(),limitEnvelope.getMinY());
+ coords[4] = new Coordinate(limitEnvelope.getMinX(),
limitEnvelope.getMinY());
+
+
+ final GeometryFactory gf = new GeometryFactory();
+ final LinearRing ring = gf.createLinearRing(coords);
+ final Polygon extent = gf.createPolygon(ring, null);
+
+
+ List<Feature> inputC = fCollection.getFeatures();
+ FeatureSchema schema = fCollection.getFeatureSchema();
+ FeatureDataset inputFC = new FeatureDataset(inputC, schema);
+ for (Iterator<Feature> it = inputFC.iterator() ; it.hasNext() ; )
{
+ Feature f = it.next();
+ dValue =
Double.parseDouble(f.getAttribute(attributeName).toString());
+ final Geometry geometry = f.getGeometry();
+
+
+ if (geometry.intersects(extent)) {
+
+ doGeometry(geometry);
+ }
+ }
+ // Raster raster = sRasterLayer.getRaster();
+
+ RasterImageIO rasterImageIO = new RasterImageIO();
+ rasterImageIO.writeImage(file, raster, limitEnvelope,
+ rasterImageIO.new CellSizeXY(CellSize, CellSize),
NoData);
+
+ }
+
+
+ private static void doPolygon(final Geometry geom) {
+
+ final GeometryFactory gf = new GeometryFactory();
+ for (int i = 0; i < geom.getNumGeometries(); i++) {
+ final Polygon poly = (Polygon) geom.getGeometryN(i);
+ LinearRing lr =
gf.createLinearRing(poly.getExteriorRing().getCoordinates());
+ Polygon part = gf.createPolygon(lr, null);
+ doPolygonPart(part, false);
+ for (int j = 0; j < poly.getNumInteriorRing(); j++) {
+ lr =
gf.createLinearRing(poly.getInteriorRingN(j).getCoordinates());
+ part = gf.createPolygon(lr, null);
+ doPolygonPart(part, true);
+ }
+ }
+
+ }
+
+
+ private static void doPolygonPart(final Polygon geom,
+ final boolean bIsHole) {
+
+ boolean bFill;
+ boolean bCrossing[];
+ int x, y, ix, xStart, xStop, iPoint;
+ double yPos;;
+ Coordinate pLeft, pRight, pa, pb;
+ final Coordinate p = new Coordinate();
+ bCrossing = new boolean[m_iNX];
+
+ final Envelope extent = geom.getEnvelopeInternal();
+
+ xStart = (int) ((extent.getMinX()- m_Extent.getXMin()) /
m_Extent.getCellSize().x) - 1;
+ if (xStart < 0) {
+ xStart = 0;
+ }
+
+ xStop = (int) ((extent.getMaxX()- m_Extent.getXMin()) /
m_Extent.getCellSize().x) + 1;
+ if (xStop >= m_iNX) {
+ xStop = m_iNX - 1;
+ }
+
+ final Coordinate[] points = geom.getCoordinates();
+
+ for (y = 0, yPos = m_Extent.getYMax(); y < m_iNY; y++, yPos -=
m_Extent.getCellSize().y) {
+ if ((yPos >= extent.getMinY()) && (yPos <= extent.getMaxY())) {
+ Arrays.fill(bCrossing, false);
+ pLeft = new Coordinate(m_Extent.getXMin() - 1.0, yPos);
+ pRight = new Coordinate(m_Extent.getXMax() + 1.0, yPos);
+
+ pb = points[points.length - 1];
+
+ for (iPoint = 0; iPoint < points.length; iPoint++) {
+ pa = pb;
+ pb = points[iPoint];
+
+ if ((((pa.y <= yPos) && (yPos < pb.y)) || ((pa.y > yPos)
&& (yPos >= pb.y)))) {
+ getCrossing(p, pa, pb, pLeft, pRight);
+
+ ix = (int) ((p.x - m_Extent.getXMin()) /
m_Extent.getCellSize().x + 1.0);
+
+ if (ix < 0) {
+ ix = 0;
+ }
+ else if (ix >= m_iNX) {
+ ix = m_iNX - 1;
+ }
+
+ bCrossing[ix] = !bCrossing[ix];
+ }
+ }
+
+ for (x = xStart, bFill = false; x <= xStop; x++) {
+ if (bCrossing[x]) {
+ bFill = !bFill;
+ }
+ if (bFill) {
+ final double dPrevValue =raster.getSampleDouble(x,
y,0);// sRasterLayer.getCellValueAsDouble(x, y);
+ if (bIsHole) {
+ if (dPrevValue == dValue) {
+ raster.setSample(x, y, 0, NO_DATA);
+
+ }
+ }
+ else {
+ if (dPrevValue == NO_DATA) {
+ raster.setSample(x, y, 0, dValue);
+
+ }
+ }
+ }
+ }
+ }
+ }
+
+ }
+
+
+
+ private static void doLine(final Geometry geom) {
+
+ for (int i = 0; i < geom.getNumGeometries(); i++) {
+ final Geometry part = geom.getGeometryN(i);
+ doLineString(part);
+ }
+
+ }
+
+
+ private static void doLineString(final Geometry geom) {
+
+ int i;
+ double x, y, x2, y2;
+ final Coordinate[] coords = geom.getCoordinates();
+ for (i = 0; i < coords.length - 1; i++) {
+ x = coords[i].x;
+ y = coords[i].y;
+ x2 = coords[i + 1].x;
+ y2 = coords[i + 1].y;
+ writeSegment(x, y, x2, y2);
+ }
+
+ }
+
+
+ private static void writeSegment(double x,
+ double y,
+ final double x2,
+ final double y2) {
+
+ double dx, dy, d, n;
+ GridCell cell;
+
+ dx = Math.abs(x2 - x);
+ dy = Math.abs(y2 - y);
+
+ if ((dx > 0.0) || (dy > 0.0)) {
+ if (dx > dy) {
+ dx /= cellSize;
+ n = dx;
+ dy /= dx;
+ dx = cellSize;
+ }
+ else {
+ dy /= cellSize;
+ n = dy;
+ dx /= dy;
+ dy = cellSize;
+ }
+
+ if (x2 < x) {
+ dx = -dx;
+ }
+
+ if (y2 < y) {
+ dy = -dy;
+ }
+
+ for (d = 0.0; d <= n; d++, x += dx, y += dy) {
+ if (m_Extent.contains(x, y)) {
+ cell =
m_Extent.getGridCoordsFromWorldCoords(x, y);
+ //System.out.println(cell.getX() + "
" + cell.getY());
+
+ raster.setSample(cell.getX(),
cell.getY(), 0,dValue);
+ }
+ }
+ }
+
+ }
+
+
+ private static void doPoint(final Geometry geometry) {
+
+ final Coordinate coord = geometry.getCoordinate();
+ final GridCell cell =
m_Extent.getGridCoordsFromWorldCoords(coord.x, coord.y);
+ raster.setSample(cell.getX(), cell.getY(), 0,dValue);
+
+ }
+
+
+
+
+
+ private static boolean getCrossing(final Coordinate crossing,
+ final Coordinate a1,
+ final Coordinate a2,
+ final Coordinate b1,
+ final Coordinate b2) {
+
+ double lambda, div, a_dx, a_dy, b_dx, b_dy;
+ a_dx = a2.x - a1.x;
+ a_dy = a2.y - a1.y;
+ b_dx = b2.x - b1.x;
+ b_dy = b2.y - b1.y;
+ if ((div = a_dx * b_dy - b_dx * a_dy) != 0.0) {
+ lambda = ((b1.x - a1.x) * b_dy - b_dx * (b1.y - a1.y)) / div;
+ crossing.x = a1.x + lambda * a_dx;
+ crossing.y = a1.y + lambda * a_dy;
+ return true;
+ }
+ return false;
+ }
+
+
+ public static void doGeometry (Geometry geometry) {
+ if (geometry.getGeometryType().equals("Point") ||
geometry.getGeometryType().equals("MultiPoint")) {
+ doPoint(geometry);
+ } else if (geometry.getGeometryType().equals("LineString") ||
geometry.getGeometryType().equals("MultiLineString")) {
+ doLine(geometry);
+ } else if (geometry.getGeometryType().equals("Polygon") ||
geometry.getGeometryType().equals("MultiPolygon")){
+ doPolygon(geometry);
+ } else if (geometry instanceof GeometryCollection) {
+ for (int j = 0; j < geometry.getNumGeometries(); j++)
{
+ Geometry geometry2 = geometry.getGeometryN(j);
+ if
(geometry2.getGeometryType().equals("Point") ||
geometry2.getGeometryType().equals("MultiPoint")) {
+ doPoint(geometry2);
+ } else if
(geometry2.getGeometryType().equals("LineString") ||
geometry2.getGeometryType().equals("MultiLineString")) {
+ doLine(geometry2);
+ } else if
(geometry2.getGeometryType().equals("Polygon") ||
geometry2.getGeometryType().equals("MultiPolygon")){
+ doPolygon(geometry2);
+ }
+ }
+ }
+ }
+
+
+
+}
+
Property changes on:
core/trunk/src/org/openjump/core/rasterimage/algorithms/RasterizeAlgorithm.java
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
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