Revision: 6589
http://sourceforge.net/p/jump-pilot/code/6589
Author: ma15569
Date: 2020-10-08 15:08:04 +0000 (Thu, 08 Oct 2020)
Log Message:
-----------
Added Raster to bypass java hip space on building a double array of cell values
if cols*rows is big (large rasters)
Modified Paths:
--------------
core/trunk/src/org/openjump/core/rasterimage/sextante/rasterWrappers/GridExtent.java
Modified:
core/trunk/src/org/openjump/core/rasterimage/sextante/rasterWrappers/GridExtent.java
===================================================================
---
core/trunk/src/org/openjump/core/rasterimage/sextante/rasterWrappers/GridExtent.java
2020-10-08 10:39:29 UTC (rev 6588)
+++
core/trunk/src/org/openjump/core/rasterimage/sextante/rasterWrappers/GridExtent.java
2020-10-08 15:08:04 UTC (rev 6589)
@@ -20,7 +20,11 @@
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
+import java.awt.image.DataBuffer;
+import java.awt.image.WritableRaster;
+import javax.media.jai.RasterFactory;
+
import org.openjump.core.rasterimage.sextante.ISextanteLayer;
import org.openjump.core.rasterimage.sextante.ISextanteRasterLayer;
@@ -44,6 +48,9 @@
int m_iNX;
int m_iNY;
Envelope m_Envelope;
+ //Added Raster to bypass java hip space on building a double array of
cell values
+ //if cols*rows is big (large rasters)
+ WritableRaster m_Raster;
public GridExtent(){}
@@ -118,6 +125,49 @@
}
/**
+ * Method to build a GridExtent with a defined Raster
+ *
+ * @param double cellSize along X
+ * @param double cellSize along Y
+ * @param Envelope envelope
+ * @param double nodata value
+ */
+
+ public void setValuesAndRaster(double cellSizeX, double cellSizeY,
Envelope envelope, double nodata) {
+ m_dCellSizeX = cellSizeX;
+ m_dCellSizeY = cellSizeY;
+ m_dXMin = Math.min(envelope.getMinX(), envelope.getMaxX());
+ m_dXMax = Math.max(envelope.getMinX(), envelope.getMaxX());
+ m_dYMin = Math.min(envelope.getMinY(), envelope.getMaxY());
+ m_dYMax = Math.max(envelope.getMinY(), envelope.getMaxY());
+ recalculateNXAndNY();
+ m_iNX = this.getNX();
+ m_iNY = this.getNY();
+ m_Raster = RasterFactory.createBandedRaster(
+ DataBuffer.TYPE_FLOAT, m_iNX , m_iNY , 1, null);
+ for (int i = 0; i < m_iNX; i++) {
+ for (int j = 0; j < m_iNY; j++) {
+ m_Raster.setSample(i, j, 0, nodata);
+ }
+ }
+ }
+
+
+
+
+ public WritableRaster getRaster() {
+ return m_Raster;
+ }
+
+ /**
+ * Returns the extension of Grid as
com.vividsolutions.jts.geom.Envelope
+ * @return Envelope
+ */
+ public Envelope getEnvelope() {
+ return new Envelope(m_dXMin,m_dXMax,m_dYMin, m_dYMax );
+ }
+
+ /**
* Returns the number of columns in the extent
* @return the number of columns
*/
@@ -136,16 +186,8 @@
return m_iNY;
}
-
- /**
- * Returns the extension of Grid as com.vividsolutions.jts.geom.Envelope
- * @return Envelope
- */
+
- public Envelope getEnvelope() {
- return m_Envelope;
- }
-
private void recalculateNXAndNY(){
m_iNY = (int) Math.floor((m_dYMax - m_dYMin) / m_dCellSizeY);
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