private void initOriginal() throws Exception {
int size = 500000;
float x;
float y;
float z;
float a;
Coord3d[] points = new Coord3d[size];
Color[] colors = new Color[size];
Random r = new Random();
r.setSeed(0);
for (int i = 0; i < size; i++) {
x = r.nextFloat() - 0.5f;
y = r.nextFloat() - 0.5f;
z = r.nextFloat() - 0.5f;
points[i] = new Coord3d(x, y, z);
a = 0.25f;
colors[i] = new Color(x, y, z, a);
}
Scatter scatter = new Scatter(points, colors);
chart = AWTChartComponentFactory.chart(Quality.Advanced, "newt");
chart.getScene().add(scatter);
}
private void initSample() throws Exception {
Coord3d[] points =
readSample("/Users/jwjoubert/Documents/r/MATSim-SA/digicore/data/sample.csv");
/* Get the centroid of the data set. */
double sumX = 0.0;
double sumY = 0.0;
double sumZ = 0.0;
for (Coord3d c : points) {
sumX += c.x;
sumY += c.y;
sumZ += c.z;
}
double cX = sumX / (double) points.length;
double cY = sumY / (double) points.length;
double cZ = sumZ / (double) points.length;
Coord3d centroid = new Coord3d(cX, cY, cZ);
/* Report the mean. */
LOG.info(String.format("Mean X: %.2f", cX));
LOG.info(String.format("Mean Y: %.2f", cY));
LOG.info(String.format("Mean Z: %.2f", cZ));
/* Calculate the distance from the centroid for each point. */
Double[] distances = new Double[points.length];
Double[] distancesAdjusted = new Double[points.length];
double maxD = Double.NEGATIVE_INFINITY;
double maxDAdjusted = Double.NEGATIVE_INFINITY;
for (int i = 0; i < points.length; i++) {
Coord3d c = points[i];
double d = Math.sqrt(Math.pow(cX - c.x, 2) + Math.pow(cY - c.y, 2) + Math.pow(cZ - c.z, 2));
distances[i] = d;
maxD = Math.max(maxD, d);
/* Adjust distance to account for angle as well. Diagonals should be
* penalised more. */
double multiplier = 1e-5;
double angleXY = Math.atan2(Math.abs(c.y - centroid.y), Math.abs(c.x - centroid.x));
double angleXZ = Math.atan2(Math.abs(c.z - centroid.z), Math.abs(c.x - centroid.x));
distancesAdjusted[i] =
d
* Math.abs(Math.sin(angleXY * 2))
*
// Math.abs( Math.sin(angleXZ*2) ) *
multiplier;
maxDAdjusted = Math.max(maxDAdjusted, distancesAdjusted[i]);
}
/* Set the colour for each point, based on the distances from the
* data centroid. */
ColorMapRainbow map = new ColorMapRainbow();
Color[] colors = new Color[points.length];
for (int i = 0; i < points.length; i++) {
colors[i] = map.getColor(0, 0, distancesAdjusted[i], 0, maxDAdjusted);
}
/* Make rainbow colors. */
Scatter scatter = new Scatter(points, colors, 4f);
chart = AWTChartComponentFactory.chart(Quality.Advanced, "newt");
Polygon polygon1 = new Polygon();
polygon1.add(new Point(new Coord3d(-500, -500, 1000)));
polygon1.add(new Point(new Coord3d(-500, 500, 1000)));
polygon1.add(new Point(new Coord3d(500, 500, 1000)));
polygon1.add(new Point(new Coord3d(500, -500, 1000)));
polygon1.setColor(new Color(0f, 1f, 0f, 0.5f));
polygon1.setFaceDisplayed(true);
Polygon polygon2 = new Polygon();
polygon2.add(new Point(new Coord3d(-500, -500, 800)));
polygon2.add(new Point(new Coord3d(-500, 500, 800)));
polygon2.add(new Point(new Coord3d(500, 500, 800)));
polygon2.add(new Point(new Coord3d(500, -500, 800)));
polygon2.setColor(new Color(1f, 0f, 0f, 0.5f));
polygon2.setFaceDisplayed(true);
// chart.getScene().add(polygon1);
// chart.getScene().add(polygon2);
chart.getScene().add(scatter);
}
public static Chart chart(String toolkit) {
AWTChartComponentFactory f = new AWTChartComponentFactory();
return f.newChart(Chart.DEFAULT_QUALITY, toolkit);
}
public static Chart chart(Quality quality, String toolkit) {
AWTChartComponentFactory f = new AWTChartComponentFactory();
return f.newChart(quality, toolkit);
}
public static Chart chart(Quality quality) {
AWTChartComponentFactory f = new AWTChartComponentFactory();
return f.newChart(quality, Toolkit.newt);
}