// From: http://forum.java.sun.com/thread.jspa?threadID=378460&tstart=135
void drawArrow(
Graphics2D g2d,
int xCenter,
int yCenter,
int x,
int y,
float stroke,
BasicStroke drawStroke) {
double aDir = Math.atan2(xCenter - x, yCenter - y);
// Line can be dashed.
g2d.setStroke(drawStroke);
g2d.drawLine(x, y, xCenter, yCenter);
// make the arrow head solid even if dash pattern has been specified
g2d.setStroke(lineStroke);
Polygon tmpPoly = new Polygon();
int i1 = 12 + (int) (stroke * 2);
// make the arrow head the same size regardless of the length length
int i2 = 6 + (int) stroke;
tmpPoly.addPoint(x, y);
tmpPoly.addPoint(x + xCor(i1, aDir + .5), y + yCor(i1, aDir + .5));
tmpPoly.addPoint(x + xCor(i2, aDir), y + yCor(i2, aDir));
tmpPoly.addPoint(x + xCor(i1, aDir - .5), y + yCor(i1, aDir - .5));
tmpPoly.addPoint(x, y); // arrow tip
g2d.drawPolygon(tmpPoly);
// Remove this line to leave arrow head unpainted:
g2d.fillPolygon(tmpPoly);
}
public LinePanel() {
p = new Polygon();
p.addPoint(nextX, nextY);
addKeyListener(
new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_UP:
nextY -= step;
break;
case KeyEvent.VK_DOWN:
nextY += step;
break;
case KeyEvent.VK_LEFT:
nextX -= step;
break;
case KeyEvent.VK_RIGHT:
nextX += step;
break;
}
p.addPoint(nextX, nextY);
repaint();
}
});
}
public void paintIcon(Component c, Graphics g, int x, int y) {
int w = getIconWidth();
int h = w;
Polygon p = new Polygon();
switch (direction) {
case EAST:
p.addPoint(x + 2, y);
p.addPoint(x + w - 2, y + h / 2);
p.addPoint(x + 2, y + h - 1);
break;
case SOUTH:
p.addPoint(x, y + 2);
p.addPoint(x + w / 2, y + h - 2);
p.addPoint(x + w - 1, y + 2);
break;
}
g.fillPolygon(p);
}
public void processPolygonSpline(boolean shiftDown) {
mCurrPC.setBatchModeOn();
if (!shiftDown) mCurrPC.unselectAll();
// loop on spline pts to construct a Polygon
Polygon srcArea = new Polygon();
for (int s = 0; s < mSplinePoints.size(); s++) {
Point p = (Point) mSplinePoints.elementAt(s);
int x = p.x - mLeft - 5;
int y = p.y - mTop - 5;
srcArea.addPoint(x, y);
}
mSplinePoints.removeAllElements();
// search for matches
byte[] currFilterResults = fdm.getResults();
double[] yArray1 = getYArray1();
double[] xArray1 = getXArray1();
double[] yArray2 = getYArray2();
double[] xArray2 = getXArray2();
Point p1 = new Point();
Point p2 = new Point();
for (int i = 0; i < mCurrPC.getSize(); i++) {
if (!mIgnoreFilter
&& (mCurrPC.isDeleted(i) || currFilterResults[i] != 4 || !mCurrPC.isSelectedLayer(i)))
continue;
double yi = yArray1[i];
double xi = xArray1[i];
double xi2 = Float.NaN;
double yi2 = Float.NaN;
double xx2 = Float.NaN;
double yy2 = Float.NaN;
// correct the X value if necessary
xi = correctX(xi);
double xx1 = (xi - winXOrigin) * winXScale;
double yy1 = (yi - winYOrigin) * winYScale;
// correct the Y coordinate if necessary
yy1 = correctY(yy1);
if (!isYAxisScaler()) {
yi2 = yArray2[i];
yy2 = (yi2 - winYOrigin) * winYScale;
;
yy2 = correctY(yy2);
} else yy2 = yy1;
if (!isXAxisScaler()) {
xi2 = xArray2[i];
xi2 = correctX(xi2);
xx2 = (xi2 - winXOrigin) * winXScale;
} else xx2 = xx1;
p1.setLocation((int) xx1, (int) yy1);
p2.setLocation((int) xx2, (int) yy2);
if (srcArea.contains(p1) || srcArea.contains(p2)) {
mCurrPC.select(i);
}
}
mViewManager.invalidateAllViews();
mCurrPC.setBatchModeOff();
}
public void processSectionSpline(boolean shiftDown) {
mCurrPC.setBatchModeOn();
if (!shiftDown) mCurrPC.unselectAll();
// loop on spline pts
for (int s = 0; s < mSplinePoints.size() - 2; s++) {
Point p1 = (Point) mSplinePoints.elementAt(s);
Point p2 = (Point) mSplinePoints.elementAt(s + 1);
int x1 = p1.x - mLeft - 5;
int y1 = p1.y - mTop - 5;
int x2 = p2.x - mLeft - 5;
int y2 = p2.y - mTop - 5;
// construct the search polygon
double dx = x1 - x2;
double dy = y1 - y2;
int width1 = ComputeSectionPixelWidth(p1);
int width2 = ComputeSectionPixelWidth(p2);
if (dx == 0 && dy == 0) return;
double dist = (double) Math.pow(dx * dx + dy * dy, 0.5f);
double p1x = x1 + (double) width1 * (-dy / dist);
double p1y = y1 + (double) width1 * (dx / dist);
double p2x = x1 - (double) width1 * (-dy / dist);
double p2y = y1 - (double) width1 * (dx / dist);
double p3x = x2 + (double) width2 * (-dy / dist);
double p3y = y2 + (double) width2 * (dx / dist);
double p4x = x2 - (double) width2 * (-dy / dist);
double p4y = y2 - (double) width2 * (dx / dist);
Polygon srcArea = new Polygon();
srcArea.addPoint((int) p2x, (int) p2y);
srcArea.addPoint((int) p1x, (int) p1y);
srcArea.addPoint((int) p3x, (int) p3y);
srcArea.addPoint((int) p4x, (int) p4y);
// search for matches
byte[] currFilterResults = fdm.getResults();
double[] yArray1 = getYArray1();
double[] xArray1 = getXArray1();
double[] yArray2 = getYArray2();
double[] xArray2 = getXArray2();
mCurrPC.setBatchModeOn();
for (int i = 0; i < mCurrPC.getSize(); i++) {
if (!mIgnoreFilter
&& (mCurrPC.isDeleted(i) || currFilterResults[i] != 4 || !mCurrPC.isSelectedLayer(i)))
continue;
double yi = yArray1[i];
double xi = xArray1[i];
double xi2 = Float.NaN;
double yi2 = Float.NaN;
double xx2 = Float.NaN;
double yy2 = Float.NaN;
// correct the X value if necessary
xi = correctX(xi);
double xx1 = (xi - winXOrigin) * winXScale;
double yy1 = (yi - winYOrigin) * winYScale;
// correct the Y coordinate if necessary
yy1 = correctY(yy1);
if (!isYAxisScaler()) {
yi2 = yArray2[i];
yy2 = (yi2 - winYOrigin) * winYScale;
;
yy2 = correctY(yy2);
} else yy2 = yy1;
if (!isXAxisScaler()) {
xi2 = xArray2[i];
xi2 = correctX(xi2);
xx2 = (xi2 - winXOrigin) * winXScale;
} else xx2 = xx1;
if (srcArea.contains(new Point((int) xx1, (int) yy1))
|| srcArea.contains(new Point((int) xx2, (int) yy2))) {
mCurrPC.select(i);
}
}
} // for splines
mSplinePoints.removeAllElements();
mViewManager.invalidateAllViews();
mCurrPC.setBatchModeOff();
}
package gui;
