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MvComposite.java
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MvComposite.java
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/* --------------------------------------------------------------------
* Copyright 2016 Gary W. Lucas.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ---------------------------------------------------------------------
*/
/*
* -----------------------------------------------------------------------
*
* Revision History:
* Date Name Description
* ------ --------- -------------------------------------------------
* 04/2016 G. Lucas Created
*
* Notes:
*
* -----------------------------------------------------------------------
*/
package org.tinfour.demo.viewer.backplane;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Path2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.util.Formatter;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.commons.math3.linear.SingularMatrixException;
import org.tinfour.common.IConstraint;
import org.tinfour.common.IIncrementalTin;
import org.tinfour.common.IIncrementalTinNavigator;
import org.tinfour.common.IQuadEdge;
import org.tinfour.common.NearestEdgeResult;
import org.tinfour.common.PolygonConstraint;
import org.tinfour.common.Vertex;
import org.tinfour.gwr.BandwidthSelectionMethod;
import org.tinfour.gwr.SurfaceModel;
import org.tinfour.gwr.GwrTinInterpolator;
import org.tinfour.interpolation.NaturalNeighborInterpolator;
import org.tinfour.interpolation.TriangularFacetInterpolator;
import org.tinfour.demo.utils.TestPalette;
import org.tinfour.demo.viewer.backplane.ViewOptions.RasterInterpolationMethod;
import org.tinfour.utils.AxisIntervals;
import org.tinfour.utils.LinearUnits;
/**
* Provides elements and method for managing the imagery associated with a model
* and a set of view options.
*/
public class MvComposite {
/**
* An arbitrary setting for how much of the available application memory the
* application is willing to allocate to the TIN.
*/
static final double tinMemoryUseFraction = 0.1;
static private AtomicInteger serialIndexSource = new AtomicInteger();
final private int serialIndex;
final private int taskIndex;
private final IModel model;
private final ViewOptions view;
/**
* Width in pixels
*/
private final int width;
/**
* Height in pixels for rendering
*/
private final int height;
AffineTransform m2c;
AffineTransform c2m;
private IIncrementalTin wireframeTin;
private IIncrementalTin rasterTin;
IIncrementalTin interpolatingTin;
double reductionForInterpolatingTin = Double.POSITIVE_INFINITY;
private int reductionForWireframe;
private int reductionForRaster;
private List<IConstraint> constraintsForRender;
GwrTinInterpolator interpolator;
IIncrementalTinNavigator navigator;
double vx0, vy0, vx1, vy1;
double zVisMin = Double.POSITIVE_INFINITY;
double zVisMax = Double.NEGATIVE_INFINITY;
/**
* A buffered image that will be returned to calling application via a
* synchronized method. This image s modified only in synchronized blocks and
* only using processes that can be completed with sufficient speed to allow
* it to be accessed from the event-dispatch thread.
*/
BufferedImage rasterImage;
private long timeForRenderWireframe0;
private long timeForRenderWireframe1;
private int nVerticesInWireframe;
private long timeForBuildRaster0;
private long timeForBuildRaster1;
boolean zGridComplete;
boolean zGridIncludesHillshade;
private float[] zGrid;
private String modelAndRenderingReport;
private Shape clipMask;
/**
* A private constructor to deter other classes from instantiating this class
* without a proper model.
*/
private MvComposite() {
taskIndex = 0;
model = null;
view = null;
width = 0;
height = 0;
m2c = null;
serialIndex = serialIndexSource.incrementAndGet();
}
/**
* Construct an instance with the specified rendering elements. Note that once
* instantiated, the model and view must never be changed.
*
* @param model a valid instance giving a data source
* @param view a valid specification giving instructions on how the data is to
* be rendered
* @param width the width of the panel rendering surface
* @param height the height of the panel rendering surface
* @param m2c the model to composite transformation; specify a null for first
* time initialization
* @param c2m the composite to model transformation; specify a null for first
* time initialization
* @param taskIndex the index of the task used during the initialization of
* this instance
*/
public MvComposite(
IModel model,
ViewOptions view,
int width, int height,
AffineTransform m2c, AffineTransform c2m,
int taskIndex) {
if (model == null) {
throw new IllegalArgumentException("Null model not allowed");
}
if (view == null) {
throw new IllegalArgumentException("Null view not allowed");
}
this.taskIndex = taskIndex;
this.width = width;
this.height = height;
this.m2c = m2c;
this.c2m = c2m;
this.model = model;
this.view = view;
serialIndex = serialIndexSource.incrementAndGet();
// Get the coordinates of the corners of the
// composite mapped to the model coordinate system.
double[] c = new double[8];
// lower-left corner
c[0] = 0;
c[1] = height;
// upper-right corner
c[2] = width;
c[3] = 0;
c2m.transform(c, 0, c, 4, 2);
vx0 = c[4];
vy0 = c[5];
vx1 = c[6];
vy1 = c[7];
if (model.isLoaded()) {
interpolatingTin = model.getReferenceTin();
reductionForInterpolatingTin = model.getReferenceReductionFactor();
interpolator = new GwrTinInterpolator(interpolatingTin);
navigator = interpolatingTin.getNavigator();
applyRangeOfVisibleSamples(model.getVertexList());
}
updateReport();
}
/**
* Construct a new composite transferring data products from the older
* composite so that they may be reused without additional processing. These
* elements may include TINs and grids as well as transformations. Generally,
* this method is used when the styling has changed, but the geometry has not.
*
* @param mvComposite the older composite
* @param view a valid set of view parameters
* @param preserveTins preserve TIN elements from previous composite
* @param taskIndex the index for the task associated with the composite
*/
public MvComposite(
MvComposite mvComposite,
ViewOptions view,
boolean preserveTins,
int taskIndex) {
this.taskIndex = taskIndex;
this.width = mvComposite.width;
this.height = mvComposite.height;
this.m2c = mvComposite.m2c;
this.c2m = mvComposite.c2m;
this.model = mvComposite.model;
if (preserveTins) {
synchronized (mvComposite) {
this.reductionForWireframe = mvComposite.reductionForWireframe;
this.reductionForRaster = mvComposite.reductionForRaster;
this.reductionForInterpolatingTin = mvComposite.reductionForInterpolatingTin;
this.wireframeTin = mvComposite.wireframeTin;
this.rasterTin = mvComposite.rasterTin;
this.interpolatingTin = mvComposite.interpolatingTin;
this.interpolator = mvComposite.interpolator;
this.timeForBuildRaster0 = mvComposite.timeForBuildRaster0;
this.timeForBuildRaster1 = mvComposite.timeForBuildRaster1;
this.navigator = mvComposite.navigator;
this.constraintsForRender = mvComposite.constraintsForRender;
}
}
this.view = view;
this.modelAndRenderingReport = mvComposite.modelAndRenderingReport;
serialIndex = serialIndexSource.incrementAndGet();
synchronized (mvComposite) {
interpolatingTin = mvComposite.interpolatingTin;
reductionForInterpolatingTin = mvComposite.reductionForInterpolatingTin;
interpolator = new GwrTinInterpolator(interpolatingTin);
navigator = interpolatingTin.getNavigator();
zVisMin = mvComposite.zVisMin;
zVisMax = mvComposite.zVisMax;
}
// Get the coordinates of the corners of the
// composite mapped to the model coordinate system.
double[] c = new double[8];
// lower-left corner
c[0] = 0;
c[1] = height;
// upper-right corner
c[2] = width;
c[3] = 0;
c2m.transform(c, 0, c, 4, 2);
vx0 = c[4];
vy0 = c[5];
vx1 = c[6];
vy1 = c[7];
if (mvComposite.zGridComplete) {
this.zGrid = mvComposite.zGrid;
this.zGridComplete = true;
this.zGridIncludesHillshade = mvComposite.zGridIncludesHillshade;
}
if (model.isLoaded()) {
IIncrementalTin ref = model.getReferenceTin();
ref.getNavigator();
interpolator = new GwrTinInterpolator(ref);
navigator = ref.getNavigator();
}
}
/**
* Get the model associated with composite.
*
* @return a valid instance
*/
public IModel getModel() {
return model;
}
/**
* Get the view options associated with the composite. It is important that
* application code not alter the content of the options object/
*
* @return a valid view object.
*/
public ViewOptions getView() {
return view;
}
/**
* Get the index of the task currently associated with the composite.
*
* @return a positive integer
*/
public int getTaskIndex() {
return taskIndex;
}
/**
* Get the width of the composite
*
* @return a positive integer in pixels
*/
public int getWidth() {
return width;
}
/**
* Get the height of the composite
*
* @return a positive integer value in pixels
*/
public int getHeight() {
return height;
}
/**
* Get the model to display transform. Do not modify this element.
*
* @return a valid transform.
*/
AffineTransform getModelToDisplayTransform() {
return m2c;
}
/**
* Sets the TIN to be used for wireframe rendering.
* <strong>Important:</strong>
* the TIN must not be modified after it is added to this composite.
*
* @param tin a valid TIN.
* @param reduction the reduction factor applied when building the TIN
*/
public void setWireframeTin(IIncrementalTin tin, int reduction) {
synchronized (this) {
wireframeTin = tin;
reductionForWireframe = reduction;
}
}
/**
* Sets the TIN for raster rendering.
*
* @param rasterTin a valid TIN
* @param reduction the reduction factor applied when building the TIN
*/
void setRasterTin(IIncrementalTin rasterTin, int reduction) {
synchronized (this) {
this.rasterTin = rasterTin;
this.reductionForRaster = reduction;
}
}
/**
* Given a vertex list, determine which vertices are within the visible bounds
* and establish min and max values accordingly. If extrema have already been
* established, the specified list will be applied incrementally to the
* existing bounds.
*
* @param vList a valid list of vertices.
*/
final void applyRangeOfVisibleSamples(List<Vertex> vList) {
if (vList == null) {
return;
}
double zMin = Double.POSITIVE_INFINITY;
double zMax = Double.NEGATIVE_INFINITY;
for (Vertex v : vList) {
double x = v.getX();
double y = v.getY();
if (vx0 <= x && x <= vx1 && vy0 <= y && y <= vy1) {
double z = v.getZ();
if (z < zMin) {
zMin = z;
}
if (z > zMax) {
zMax = z;
}
}
}
synchronized (this) {
if (zMin < zVisMin) {
zVisMin = zMin;
}
if (zMax > zVisMax) {
zVisMax = zMax;
}
}
}
private double[] getRangeOfVisibleSamples() {
synchronized (this) {
if (zVisMin == Double.POSITIVE_INFINITY) {
return new double[0];
}
double[] d = new double[2];
d[0] = zVisMin;
d[1] = zVisMax;
return d;
}
}
/**
* Submit a TIN as a candidate for serving as the interpolating TIN. The TIN
* will be selected if its reduction factor is less than that of the current
* TIN.
*
* @param tin a valid candidate TIN
* @param the reduction factor of the candidate TIN
*/
void submitCandidateTinForInterpolation(IIncrementalTin tin, double reductionFactor) {
synchronized (this) {
if (reductionFactor < this.reductionForInterpolatingTin) {
interpolatingTin = tin;
reductionForInterpolatingTin = reductionFactor;
interpolator = new GwrTinInterpolator(interpolatingTin);
navigator = interpolatingTin.getNavigator();
}
}
}
// 1010 1000 1001
// 0010 0000 0001
// 0110 0100 0101
private int cohenSutherlandCode(Vertex v) {
double x = v.getX();
double y = v.getY();
int mask = 0;
if (x < vx0) {
mask |= 0b0010;
} else if (x > vx1) {
mask |= 0b0001;
}
if (y < vy0) {
mask |= 0b0100;
} else if (y > vy1) {
mask |= 0b1000;
}
return mask;
}
/**
* Render sample points only. Used when the user has deselected the edge
* rendering. Since a TIN is not required, the rendering is conducted strictly
* on the basis of the selected list.
*
* @param vList a list of vertices
* @return a buffered image containing the rendering result.
*/
BufferedImage renderWireframePointsOnly(List<Vertex> vList) {
timeForRenderWireframe1 = 0;
nVerticesInWireframe = 0;
timeForRenderWireframe0 = System.currentTimeMillis();
BufferedImage bImage
= new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2d = bImage.createGraphics();
g2d.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setColor(view.getForeground());
double c[] = new double[8];
double zMin = model.getMinZ();
double zMax = model.getMaxZ();
TestPalette palette = null;
if (view.usePaletteForWireframe()) {
String paletteName = view.getPaletteName();
palette = TestPalette.getPaletteByName(paletteName);
}
g2d.setColor(view.getForeground());
boolean labeling = view.isLabelRenderingSelected();
boolean indexLabeling = "ID".equalsIgnoreCase(view.getFieldForLabel());
g2d.setFont(new Font("Arial", Font.PLAIN, 10));
Ellipse2D e2d = new Ellipse2D.Double();
for (Vertex a : vList) {
double x = a.getX();
double y = a.getY();
c[0] = x;
c[1] = y;
m2c.transform(c, 0, c, 2, 1);
x = c[2];
y = c[3];
if (0 <= x && x <= width && 0 <= y && y <= height) {
e2d.setFrame(c[2] - 2, c[3] - 2, 5, 5);
if (palette != null) {
double z = a.getZ();
Color color = palette.getColor(z, zMin, zMax);
g2d.setColor(color);
}
g2d.fill(e2d);
if (labeling) {
String s;
if (indexLabeling) {
s = Integer.toString(a.getIndex());
} else {
s = String.format("%5.3f", a.getZ());
}
g2d.drawString(s, (float) (c[2] + 3), (float) (c[3] - 3));
}
}
}
return bImage;
}
/**
* Render using an existing wireframe tin.
*/
@SuppressWarnings("PMD.AvoidDeeplyNestedIfStmts")
BufferedImage renderWireframe() {
timeForRenderWireframe1 = 0;
nVerticesInWireframe = 0;
if (!(view.isEdgeRenderingSelected() || view.isVertexRenderingSelected())) {
return null;
}
timeForRenderWireframe0 = System.currentTimeMillis();
BufferedImage bImage
= new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2d = bImage.createGraphics();
g2d.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setColor(view.getForeground());
double c[] = new double[8];
double zMin = model.getMinZ();
double zMax = model.getMaxZ();
TestPalette palette = null;
if (view.usePaletteForWireframe()) {
String paletteName = view.getPaletteName();
palette = TestPalette.getPaletteByName(paletteName);
}
g2d.setColor(view.getForeground());
// although the TIN classes do provide a method for getting vertices,
// the edge fetching method is more efficient. So we attempt to streamline
// things here by using just the edges. We supplement this with a
// bitmap that will keep a record of two things:
// what points are within the drawing area
// what points have already been rendered.
//
// Although we could have passed the vertex list that was
// already available into this task, we take the list from
// the TIN instead... we do this because the TIN has logic for
// removing duplicate vertices and we don't want to render the dupes.
// Finally, vertices with a negative index are a special case.
// They are perimeter vertices. Because they are not thinned, they may
// be too dense for labeling, so we do not label them. Also, note that
// because their indices are negative, they cannot be used in the
// bitmap logic.
int maxVertexIndex = 0;
List<IQuadEdge> edgeList = wireframeTin.getEdges();
for (IQuadEdge e : edgeList) {
Vertex a = e.getA();
if (a != null) {
int index = a.getIndex();
if (index > maxVertexIndex) {
maxVertexIndex = index;
}
}
Vertex b = e.getB();
if (b != null) {
int index = b.getIndex();
if (index > maxVertexIndex) {
maxVertexIndex = index;
}
}
}
int nVerticesIncluded = 0;
final int[] bitmap = new int[1 + maxVertexIndex / 32];
if (view.isEdgeRenderingSelected()) {
Line2D l2d = new Line2D.Double();
for (IQuadEdge e : edgeList) {
Vertex a = e.getA();
Vertex b = e.getB();
if (a == null || b == null) {
// a ghost edge
continue;
}
int aMask = cohenSutherlandCode(a);
int bMask = cohenSutherlandCode(b);
if ((aMask & bMask) != 0) {
// edge is unambiguously off the display
continue;
}
if (aMask == 0) {
nVerticesIncluded++;
int aIndex = a.getIndex();
if (aIndex >= 0) {
bitmap[aIndex >> 5] |= (1 << (aIndex & 0x1f));
}
}
if (bMask == 0) {
nVerticesIncluded++;
int bIndex = b.getIndex();
if (bIndex >= 0) {
bitmap[bIndex >> 5] |= (1 << (bIndex & 0x1f));
}
}
if (palette != null) {
double z0 = a.getZ();
double z1 = a.getZ();
Color c0 = palette.getColor(z0, zMin, zMax);
Color c1 = palette.getColor(z1, zMin, zMax);
GradientPaint paint = new GradientPaint( //NOPMD
(float) a.getX(), (float) b.getY(), c0,
(float) a.getX(), (float) b.getY(), c1);
g2d.setPaint(paint);
}
c[0] = a.getX();
c[1] = a.getY();
c[2] = b.getX();
c[3] = b.getY();
m2c.transform(c, 0, c, 4, 2);
l2d.setLine(c[4], c[5], c[6], c[7]);
g2d.draw(l2d);
}
}
// if the edge rendering wasn't turned on, we need to
// process the data and make sure that the bitmap is
// properly populated
if (!view.isEdgeRenderingSelected()) {
for (IQuadEdge e : edgeList) {
Vertex a = e.getA();
Vertex b = e.getB();
if (a != null) {
double x = a.getX();
double y = a.getY();
if (vx0 <= x && x <= vx1 && vy0 <= y && y <= vy1) {
nVerticesIncluded++;
int aIndex = a.getIndex();
if (aIndex >= 0) {
bitmap[aIndex >> 5] |= (1 << (aIndex & 0x1f));
}
}
}
if (b != null) {
double x = b.getX();
double y = b.getY();
if (vx0 <= x && x <= vx1 && vy0 <= y && y <= vy1) {
nVerticesIncluded++;
int bIndex = b.getIndex();
if (bIndex >= 0) {
bitmap[bIndex >> 5] |= (1 << (bIndex & 0x1f));
}
}
}
}
}
if (view.isVertexRenderingSelected()) {
boolean labeling = view.isLabelRenderingSelected();
boolean indexLabeling = "ID".equalsIgnoreCase(view.getFieldForLabel());
g2d.setFont(new Font("Arial", Font.PLAIN, 10));
Ellipse2D e2d = new Ellipse2D.Double();
for (IQuadEdge e : edgeList) {
Vertex a = e.getA();
Vertex b = e.getB();
if (a != null) {
int aIndex = a.getIndex();
if (aIndex >= 0) {
int mask = 1 << (aIndex & 0x1f);
if ((bitmap[aIndex >> 5] & mask) != 0) {
bitmap[aIndex >> 5] &= ~mask;
double x = a.getX();
double y = a.getY();
c[0] = x;
c[1] = y;
m2c.transform(c, 0, c, 2, 1);
e2d.setFrame(c[2] - 2, c[3] - 2, 5, 5);
if (palette != null) {
double z = a.getZ();
Color color = palette.getColor(z, zMin, zMax);
g2d.setColor(color);
}
g2d.fill(e2d);
if (labeling) {
String s;
if (indexLabeling) {
s = a.getLabel();
} else {
s = String.format("%5.3f", a.getZ());
}
g2d.drawString(s, (float) (c[2] + 3), (float) (c[3] - 3));
}
}
}
}
if (b != null) {
int bIndex = b.getIndex();
if (bIndex >= 0) {
int mask = 1 << (bIndex & 0x1f);
if ((bitmap[bIndex >> 5] & mask) != 0) {
bitmap[bIndex >> 5] &= ~mask;
double x = b.getX();
double y = b.getY();
c[0] = x;
c[1] = y;
m2c.transform(c, 0, c, 2, 1);
e2d.setFrame(c[2] - 2, c[3] - 2, 5, 5);
if (palette != null) {
double z = b.getZ();
Color color = palette.getColor(z, zMin, zMax);
g2d.setColor(color);
}
g2d.fill(e2d);
if (labeling) {
String s;
if (indexLabeling) {
s = Integer.toString(b.getIndex());
} else {
s = String.format("%5.3f", b.getZ());
}
g2d.drawString(s, (float) (c[2] + 3), (float) (c[3] - 3));
}
}
}
}
}
}
// Draw a border around the overall composite
// g2d.setStroke(new BasicStroke(2.0f));
// g2d.setColor(new Color(64, 64, 255));
// Rectangle2D r2d = new Rectangle2D.Double(0, 0, width, height);
// g2d.draw(r2d);
// g2d.draw(new Line2D.Double(0, 0, width, height));
// g2d.draw(new Line2D.Double(width, 0, 0, height));
g2d.dispose();
timeForRenderWireframe1 = System.currentTimeMillis();
nVerticesInWireframe = nVerticesIncluded;
updateReport();
return bImage;
}
BufferedImage renderConstraints() {
if (!view.isConstraintRenderingSelected()) {
return null;
}
BufferedImage bImage
= new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2d = bImage.createGraphics();
g2d.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setColor(view.getForeground());
double c[] = new double[8];
g2d.setColor(view.getConstraintColor());
g2d.setStroke(new BasicStroke(2.0f));
for (IConstraint con : constraintsForRender) {
if (con.isValid()) {
boolean moveFlag = true;
Path2D path = new Path2D.Double(); //NOPMD
for (Vertex v : con) {
c[0] = v.getX();
c[1] = v.getY();
m2c.transform(c, 0, c, 2, 1);
if (moveFlag) {
moveFlag = false;
path.moveTo(c[2], c[3]);
} else {
path.lineTo(c[2], c[3]);
}
}
if (con.isPolygon()) {
path.closePath();
}
g2d.draw(path);
}
}
return bImage;
}
/**
* Get the transform that maps the composite to the model
*
* @return a valid instance
*/
public AffineTransform getComposite2ModelTransform() {
return new AffineTransform(c2m);
}
/**
* Get a transform that maps the model to the composite
*
* @return a valid instance
*/
public AffineTransform getModel2CompositeTransform() {
return new AffineTransform(m2c);
}
/**
* Map the specified composite coordinates to the model and get a string
* indicating the data at that point. Typically called to support mouse move
* events.
*
* @param x a coordinate in the composite coordinate system
* @param y a coordinate in the composite coordinate system
* @return a valid string
*/
public String getModelDataStringAtCoordinates(double x, double y) {
double[] c = new double[4];
c[0] = x;
c[1] = y;
c2m.transform(c, 0, c, 2, 1);
double mx = c[2];
double my = c[3];
String s = model.getFormattedCoordinates(c[2], c[3]);
if (mx < vx0 || mx > vx1 || my < vy0 || my > vy1) {
return s;
} else if (interpolator != null) {
// a slightly higher bandwidth parameter can serve as a low-pass filter
// if the parameter is too small, the results will be more dramatic,
// but will tend to reveal the triangular nature of the underlying TIN
// in areas of particularly severe gradient.
double z = interpolator.interpolate(
SurfaceModel.QuadraticWithCrossTerms,
BandwidthSelectionMethod.FixedProportionalBandwidth, 1.0,
mx, my, null);
if (Double.isNaN(z)) {
s += " : N/A"; //NOPMD
} else {
s += String.format(" : %4.2f", z); //NOPMD
}
}
return s;
}
/**
* Maps the specified composite coordinates to the model, performs a data
* query, and gets an HTML-formatted string indicating the data at that point.
*
* @param x a coordinate in the composite coordinate system
* @param y a coordinate in the composite coordinate system
* @return a valid string
*/
public MvQueryResult performQuery(double x, double y) {
double[] c = new double[4];
c[0] = x;
c[1] = y;
c2m.transform(c, 0, c, 2, 1);
double mx = c[2];
double my = c[3];
Point2D compositePoint = new Point2D.Double(x, y);
Point2D modelPoint = new Point2D.Double(mx, my);
if (interpolator == null) {
new MvQueryResult(
compositePoint,
modelPoint,
"<html>Data not available. Model not loaded</html>");
}
String units;
switch (model.getLinearUnits()) {
case METERS:
case FEET:
units = model.getLinearUnits().getAbbreviation();
break;
default:
units = "units";
break;
}
NearestEdgeResult result = navigator.getNearestEdge(mx, my);
boolean queryIsOutside = !result.isInterior();
Vertex vNear = result.getNearestVertex();
double dNear = result.getDistanceToNearestVertex();
// the following is a debugging aid when trying to deal with vertex
// insertion versus TIN extension.
// boolean isVertexInside = (searchEdge.getForward().getB() != null);
StringBuilder sb = new StringBuilder(512);
Formatter fmt = new Formatter(sb);
fmt.format("<html><strong>Query/Regression Results</strong><br><pre><small>");
double z = interpolator.interpolate(SurfaceModel.QuadraticWithCrossTerms,
BandwidthSelectionMethod.OptimalAICc, 1.0,
mx, my, null);
fmt.format("X: %s%n", model.getFormattedX(mx));
fmt.format("Y: %s%n", model.getFormattedY(my));
if (queryIsOutside) {
fmt.format("Query point is outside of TIN");
} else if (Double.isNaN(z)) {
fmt.format("Z: Not available%n");
} else {
double beta[] = interpolator.getCoefficients();
double descA = Math.toDegrees(Math.atan2(-beta[2], -beta[1]));
double descB = 90 - descA;
if (descB < 0) {
descB += 360; // compass bearing is always 0 to 360
}
double zX = beta[1];
double zY = beta[2];
double slope = Math.sqrt(zX * zX + zY * zY);
double kP = Double.NaN;
double kS = Double.NaN;
double h = Double.NaN;
try {
h = interpolator.getPredictionIntervalHalfRange(0.05);
} catch (SingularMatrixException smex) {
fmt.format("Data does not support statistical analysis%n");
}
if (!Double.isNaN(h)) {
switch (interpolator.getSurfaceModel()) {
case QuadraticWithCrossTerms:
case CubicWithCrossTerms:
double zXX = 2 * beta[3];
double zYY = 2 * beta[4];
double zXY = beta[5];
kP = (zXX * zX * zX + 2 * zXY * zX * zY + zYY * zY * zY)
/ ((zX * zX + zY * zY) * Math.pow(zX * zX + zY * zY + 1.0, 1.5));
kS = (zX * zY * (zXX - zYY) + (zY * zY - zX * zX) * zXY)
/ Math.pow(zX * zX + zY * zY, 1.5);
break;
default:
break;
}
fmt.format("Z: %11.2f ± %4.2f %s%n", z, h, units);
fmt.format("Slope: %11.2f %%%n", slope * 100);
fmt.format("Curvature%n");
fmt.format(" Profile: %8.5f (radian/%s)%n", kP, units);
fmt.format(" Streamline: %8.5f (radian/%s)%n", kS, units);
fmt.format("Steepest Descent%n");
fmt.format(" Azimuth: %4d°%n", (int) (descA));
fmt.format(" Compass Brg: %03d°%n", (int) (descB));
}
fmt.format("Nearest Point%n");
fmt.format(" Dist: %11.2f %s%n", dNear, units);
fmt.format(" X: %s%n", model.getFormattedX(vNear.getX()));
fmt.format(" Y: %s%n", model.getFormattedY(vNear.getY()));
fmt.format(" Z: %11.2f%n", vNear.getZ());
fmt.format(" ID: %8d%n", vNear.getIndex());
if (model instanceof ModelFromLas) {
((ModelFromLas) model).formatLidarFields(fmt, vNear.getIndex());
}