/**
* Draw the image containing the dataset pixels.
*
* @param panel the panel containing this data raster
* @param g the graphics context upon which to draw
*/
public void draw(DrawingPanel panel, Graphics g) {
if (!visible) {
return;
}
if (primaryDrawingPanel != panel) {
return; // can only draw on one panel for now.
}
int xrange = panel.xToPix(xmax) - panel.xToPix(xmin);
int yrange = panel.yToPix(ymin) - panel.yToPix(ymax);
xrange = Math.min(xrange, panel.getWidth());
yrange = Math.min(yrange, panel.getHeight());
if ((xrange == 0) || (xrange == 0)) {
return;
}
// render a new image if the scale or image size change
if ((Math.abs(xrange) != image.getWidth())
|| // image size change
(Math.abs(yrange) != image.getHeight())
|| ( // image size change
xppu != primaryDrawingPanel.getXPixPerUnit())
|| ( // scale change
yppu != primaryDrawingPanel.getYPixPerUnit())) {
render();
}
double xmin = Math.max(primaryDrawingPanel.getXMin(), this.xmin);
double ymax = Math.min(primaryDrawingPanel.getYMax(), this.ymax);
if ((image != null) && (image.getWidth() > 1)) {
g.drawImage(
image, panel.xToPix(xmin), panel.yToPix(ymax), panel); // blast the image into the panel
}
}
/**
* Draws the spokes for the polar plot.
*
* @param panel
* @param g
*/
protected void drawRAxis(double dr, double rmax, DrawingPanel panel, Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g.setColor(gridcolor.darker());
int x1 = panel.xToPix(0);
int y1 = panel.yToPix(0);
int x2 = panel.xToPix(rmax);
g.drawLine(x1, y1, Math.min(x2, panel.getWidth() - panel.getRightGutter()), y1);
FontMetrics fm = g2.getFontMetrics();
int nLabels = (int) (panel.getXMax() / dr / MAJOR_TIC);
int stride = (nLabels > 3) ? 2 : 1;
double rm = Math.min(rmax, panel.getXMax());
for (double r = (nLabels > 3) ? stride * MAJOR_TIC * dr : MAJOR_TIC * dr;
r <= rm;
r += (stride * MAJOR_TIC * dr)) {
String label = getLabel(r);
int sW = fm.stringWidth(label) + 4;
int sH = fm.getHeight();
g2.setColor(new Color(247, 247, 247));
int x0 = panel.xToPix(r), y0 = panel.yToPix(0);
g2.fill(new Rectangle2D.Double(x0 - sW / 2, y0 + 3, sW, sH));
g2.setColor(Color.black);
g2.draw(new Rectangle2D.Double(x0 - sW / 2, y0 + 3, sW, sH));
g2.setColor(Color.BLACK);
g2.drawString(label, x0 - sW / 2 + 2, y0 + 1 + sH);
}
}
/**
* Paint the contour.
*
* @param g
*/
public synchronized void draw(DrawingPanel panel, Graphics g) {
if (!visible || (griddata == null)) {
return;
}
if (!autoscaleZ) {
g.setColor(colorMap.getFloorColor());
int w = panel.getWidth() - panel.getLeftGutter() - panel.getRightGutter();
int h = panel.getHeight() - panel.getTopGutter() - panel.getBottomGutter();
g.fillRect(panel.getLeftGutter(), panel.getTopGutter(), Math.max(w, 0), Math.max(h, 0));
}
accumulator.clearAccumulator();
contour_stepz = (zmax - zmin) / (contour_lines + 1);
double z = zmin;
for (int c = 0; c < contourColors.length; c++) {
if (!autoscaleZ && (c == contourColors.length - 1)) {
contourColors[c] = colorMap.getCeilColor();
} else {
contourColors[c] = colorMap.doubleToColor(z);
}
z += contour_stepz;
}
// double dx=griddata.getDx();
// double dy=griddata.getDy();
// double x = griddata.getLeft();
double x = griddata.getLeft(), dx = (griddata.getRight() - griddata.getLeft()) / (nx - 1);
double y = griddata.getTop(), dy = -(griddata.getTop() - griddata.getBottom()) / (ny - 1);
for (int i = 0, mx = internalData.length - 1; i < mx; i++) {
y = griddata.getTop();
for (int j = 0, my = internalData[0].length - 1; j < my; j++) {
contour_vertex[0][0] = x;
contour_vertex[0][1] = y;
contour_vertex[0][2] = internalData[i][j];
contour_vertex[1][0] = x;
contour_vertex[1][1] = y + dy;
contour_vertex[1][2] = internalData[i][j + 1];
contour_vertex[2][0] = x + dx;
contour_vertex[2][1] = y + dy;
contour_vertex[2][2] = internalData[i + 1][j + 1];
contour_vertex[3][0] = x + dx;
contour_vertex[3][1] = y;
contour_vertex[3][2] = internalData[i + 1][j];
createContour(panel, g);
y += dy;
}
x += dx;
}
if (showContourLines) {
g.setColor(lineColor);
accumulator.drawAll(g);
int lpix = panel.xToPix(griddata.getLeft());
int tpix = panel.yToPix(griddata.getTop());
int rpix = panel.xToPix(griddata.getRight());
int bpix = panel.yToPix(griddata.getBottom());
g.drawRect(
Math.min(lpix, rpix), Math.min(tpix, bpix), Math.abs(lpix - rpix), Math.abs(tpix - bpix));
}
}
/**
* Draws the spokes for the polar plot.
*
* @param panel
* @param g
*/
public void drawSpokes(double rmax, DrawingPanel panel, Graphics g) {
g.setColor(gridcolor);
for (double theta = 0; theta < Math.PI; theta += dtheta) {
int x1 = panel.xToPix(rmax * Math.cos(theta));
int y1 = panel.yToPix(rmax * Math.sin(theta));
int x2 = panel.xToPix(-rmax * Math.cos(theta));
int y2 = panel.yToPix(-rmax * Math.sin(theta));
g.drawLine(x1, y1, x2, y2);
}
}
/** Draws clusters */
public void draw(DrawingPanel panel, Graphics g) {
if (site == null) {
return;
}
int sizeX = Math.abs(panel.xToPix(1.0) - panel.xToPix(0));
int sizeY = Math.abs(panel.yToPix(1.0) - panel.yToPix(0));
for (int i = 0; i < numberOfParticles; i++) {
int xpix = panel.xToPix(x[i]) - sizeX;
int ypix = panel.yToPix(y[i]) - sizeY;
g.fillRect(xpix + sizeX / 2, ypix + sizeY / 2, sizeX, sizeY);
}
}
/**
* Paints a new image using the existing data.
*
* <p>returns the image buffer
*/
public synchronized BufferedImage render() {
if (primaryDrawingPanel == null) {
return null;
}
int xrange = primaryDrawingPanel.xToPix(xmax) - primaryDrawingPanel.xToPix(xmin);
int yrange = primaryDrawingPanel.yToPix(ymin) - primaryDrawingPanel.yToPix(ymax);
xrange = Math.min(xrange, primaryDrawingPanel.getWidth());
yrange = Math.min(yrange, primaryDrawingPanel.getHeight());
if ((Math.abs(xrange) == 0) || (Math.abs(yrange) == 0)) {
return null; // Produces exception in IE (Paco)
}
image = new BufferedImage(Math.abs(xrange), Math.abs(yrange), BufferedImage.TYPE_INT_ARGB);
backgroundColor = new Color(image.getRGB(0, 0));
for (int i = 0, n = imageDatasets.size(); i < n; i++) {
(imageDatasets.get(i)).render();
}
return image;
}
/**
* Draws the rings for the polar plot.
*
* @param panel
* @param g
* @return double the ring separation used
*/
public double drawRings(double rmax, DrawingPanel panel, Graphics g) {
double dr = Math.max(this.dr, 1.0e-9);
if (autospaceRings) {
int exponent = (int) (Math.log(rmax) / LOG10);
double decade = Math.pow(10, exponent - 1);
dr = decade;
while (rmax / dr > 5 * MAJOR_TIC) { // increase dr if we have more than 25 rings
dr *= 2;
if (dr / decade > 3.5 && dr / decade < 4.5) {
dr = 5 * decade;
decade *= 10;
}
}
} else {
int nrings = (int) (rmax / dr);
while (nrings > 10 * MAJOR_TIC) {
dr *= 2;
nrings = (int) (rmax / dr);
}
}
int xcenter = panel.xToPix(0);
int ycenter = panel.yToPix(0);
int xrad = (int) (panel.getXPixPerUnit() * rmax);
int yrad = (int) (panel.getYPixPerUnit() * rmax);
if (interiorColor != null) {
g.setColor(interiorColor);
g.fillOval(xcenter - xrad, ycenter - yrad, 2 * xrad, 2 * yrad);
}
int counter = 0;
for (double r = 0; r <= rmax; r += dr) {
g.setColor(gridcolor);
xrad = panel.xToPix(r) - xcenter;
yrad = ycenter - panel.yToPix(r);
if (counter % MAJOR_TIC == 0) {
g.setColor(gridcolor.darker());
}
g.drawOval(xcenter - xrad, ycenter - yrad, 2 * xrad, 2 * yrad);
counter++;
}
return dr;
}
/**
* Creates contour plot of a single area division. Called by <code>draw</code> method
*
* @see #draw
*/
private final void createContour(DrawingPanel panel, Graphics g) {
double z = zmin;
xpoints[0] = panel.xToPix(contour_vertex[0][0]) + 1;
xpoints[2] = panel.xToPix(contour_vertex[1][0]) + 1;
xpoints[4] = panel.xToPix(contour_vertex[2][0]) + 1;
xpoints[6] = panel.xToPix(contour_vertex[3][0]) + 1;
xpoints[1] = xpoints[3] = xpoints[5] = xpoints[7] = -1;
ypoints[0] = panel.yToPix(contour_vertex[0][1]) + 1;
ypoints[4] = panel.yToPix(contour_vertex[2][1]) + 1;
ypoints[2] = ypoints[3] = panel.yToPix(contour_vertex[1][1]) + 1;
ypoints[6] = ypoints[7] = panel.yToPix(contour_vertex[3][1]) + 1;
int xmin = xpoints[0];
int xmax = xpoints[4];
for (int counter = 0; counter <= contour_lines + 1; counter++) {
// Analyzes edges
for (int edge = 0; edge < 4; edge++) {
int index = (edge << 1) + 1;
int nextedge = (edge + 1) & 3;
if (z > contour_vertex[edge][2]) {
xpoints[index - 1] = -2;
if (z > contour_vertex[nextedge][2]) {
xpoints[(index + 1) & 7] = -2;
xpoints[index] = -2;
}
} else if (z > contour_vertex[nextedge][2]) {
xpoints[(index + 1) & 7] = -2;
}
if (xpoints[index] != -2) {
if (xpoints[index] != -1) {
intersection[edge] += delta[edge];
if ((index == 1) || (index == 5)) {
ypoints[index] = panel.yToPix(intersection[edge]) + 1;
} else {
xpoints[index] = panel.xToPix(intersection[edge]) + 1;
}
} else {
if ((z > contour_vertex[edge][2]) || (z > contour_vertex[nextedge][2])) {
switch (index) {
case 1:
delta[edge] =
(contour_vertex[nextedge][1] - contour_vertex[edge][1])
* contour_stepz
/ (contour_vertex[nextedge][2] - contour_vertex[edge][2]);
intersection[edge] =
(contour_vertex[nextedge][1] * (z - contour_vertex[edge][2])
+ contour_vertex[edge][1] * (contour_vertex[nextedge][2] - z))
/ (contour_vertex[nextedge][2] - contour_vertex[edge][2]);
xpoints[index] = xmin;
ypoints[index] = panel.yToPix(intersection[edge]) + 1;
break;
case 3:
delta[edge] =
(contour_vertex[nextedge][0] - contour_vertex[edge][0])
* contour_stepz
/ (contour_vertex[nextedge][2] - contour_vertex[edge][2]);
intersection[edge] =
(contour_vertex[nextedge][0] * (z - contour_vertex[edge][2])
+ contour_vertex[edge][0] * (contour_vertex[nextedge][2] - z))
/ (contour_vertex[nextedge][2] - contour_vertex[edge][2]);
xpoints[index] = panel.xToPix(intersection[edge]) + 1;
break;
case 5:
delta[edge] =
(contour_vertex[edge][1] - contour_vertex[nextedge][1])
* contour_stepz
/ (contour_vertex[edge][2] - contour_vertex[nextedge][2]);
intersection[edge] =
(contour_vertex[edge][1] * (z - contour_vertex[nextedge][2])
+ contour_vertex[nextedge][1] * (contour_vertex[edge][2] - z))
/ (contour_vertex[edge][2] - contour_vertex[nextedge][2]);
xpoints[index] = xmax;
ypoints[index] = panel.yToPix(intersection[edge]) + 1;
break;
case 7:
delta[edge] =
(contour_vertex[edge][0] - contour_vertex[nextedge][0])
* contour_stepz
/ (contour_vertex[edge][2] - contour_vertex[nextedge][2]);
intersection[edge] =
(contour_vertex[edge][0] * (z - contour_vertex[nextedge][2])
+ contour_vertex[nextedge][0] * (contour_vertex[edge][2] - z))
/ (contour_vertex[edge][2] - contour_vertex[nextedge][2]);
xpoints[index] = panel.xToPix(intersection[edge]) + 1;
break;
}
}
}
}
}
// Creates polygon
int contour_n = 0;
for (int index = 0; index < 8; index++) {
if (xpoints[index] >= 0) {
contour_x[contour_n] = xpoints[index];
contour_y[contour_n] = ypoints[index];
contour_n++;
}
}
if (showColoredLevels && (colorMap.getPaletteType() != ColorMapper.WIREFRAME)) {
g.setColor(contourColors[counter]);
if (contour_n > 0) {
g.fillPolygon(contour_x, contour_y, contour_n);
}
}
// Creates contour lines
if (showContourLines) {
int x = -1;
int y = -1;
for (int index = 1; index < 8; index += 2) {
if (xpoints[index] >= 0) {
if (x != -1) {
accumulator.addLine(x, y, xpoints[index], ypoints[index]);
}
x = xpoints[index];
y = ypoints[index];
}
}
if ((xpoints[1] > 0) && (x != -1)) {
accumulator.addLine(x, y, xpoints[1], ypoints[1]);
}
}
if (contour_n < 3) {
break;
}
z += contour_stepz;
}
}