public void actionPerformed(ActionEvent ae) {
Area area = null;
List<Attribute> attrs = new ArrayList<Attribute>();
boolean fill = false;
for (Vector v : shapes) {
Primitive vv = v;
while (vv instanceof Proxy && !(vv instanceof PaintedPrimitive)) {
vv = ((Proxy) vv).getProxiedPrimitive();
}
if (vv instanceof PaintedPrimitive) {
PaintedPrimitive pp = (PaintedPrimitive) vv;
List<Attribute> atts = pp.allAttributes();
System.err.println(" include attributes " + atts);
attrs.addAll(pp.allAttributes());
}
fill |= v instanceof Fillable && ((Fillable) v).isFill();
if (area == null) {
area = new Area(v.toShape());
} else {
Area other = new Area(v.toShape());
switch (kind) {
case UNION:
area.add(other);
break;
case INTERSECTION:
area.intersect(other);
break;
case SUBTRACTION:
area.subtract(other);
break;
case XOR:
area.exclusiveOr(other);
break;
default:
throw new AssertionError();
}
}
}
if (area != null) {
PathIteratorWrapper wrap =
new PathIteratorWrapper(
area.getPathIterator(AffineTransform.getTranslateInstance(0, 0)), fill);
// XXX probably don't want all attributes, they may be
// redundant
PaintedPrimitive pp = PaintedPrimitive.create(wrap, attrs);
stack.replace(shapes, pp);
if (repainter != null) {
repainter.requestRepaint();
;
}
}
}
public NewPolygon2D clip(Rectangle2D boundingBox) {
Area thisArea = new Area(path);
thisArea.intersect(new Area(boundingBox));
PathIterator iterator = thisArea.getPathIterator(null);
double[] v = new double[2];
while (!iterator.isDone()) {
int type = iterator.currentSegment(v);
System.err.println(":" + v[0] + v[1] + "\n");
iterator.next();
}
System.exit(-1);
GeneralPath path = new GeneralPath(thisArea);
path.closePath();
NewPolygon2D newPolygon = new NewPolygon2D(path);
newPolygon.setFillValue(this.getFillValue());
return newPolygon;
}
private int computeHashCode() {
int hash = width * 1313 + height * 71;
// Area.hashCode() is not implemented, so we have to do it ourselves..
PathIterator pi = area.getPathIterator(null);
double[] arg = new double[6];
while (!pi.isDone()) {
for (int i = 0; i < 6; i++) {
arg[i] = 0;
}
int val = pi.getWindingRule();
val += 3 * pi.currentSegment(arg);
for (int i = 0; i < 6; i++) {
val = (val * 5) + (int) Math.floor(arg[i] * 1000);
}
hash = hash * 7 + val;
pi.next();
}
return hash;
}
/**
* Converts an awt Area to a String representing an SVG path.
*
* @param a The Area to convert to an SVG path.
* @returns An SVG specification of the passed in Area.
*/
protected static String toSVGPath(Area a) {
StringBuilder sb = new StringBuilder();
PathIterator it = a.getPathIterator(null);
if (null == it) {
return new String();
}
// PathIterator is not a normal Java Iterator
while (!it.isDone()) {
double[] c = new double[6];
switch (it.currentSegment(c)) {
case PathIterator.SEG_MOVETO:
sb.append(String.format("M%.2f,%.2f ", c[0], c[1]));
break;
case PathIterator.SEG_LINETO:
sb.append(String.format("L%.2f,%.2f ", c[0], c[1]));
break;
case PathIterator.SEG_QUADTO:
sb.append(String.format("Q%.2f,%.2f,%.2f,%.2f ", c[0], c[1], c[2], c[3]));
break;
case PathIterator.SEG_CUBICTO:
sb.append(
String.format(
"C%.2f,%.2f,%.2f,%.2f,%.2f,%.2f ", c[0], c[1], c[2], c[3], c[4], c[5]));
break;
case PathIterator.SEG_CLOSE:
sb.append("Z");
break;
}
// update
it.next();
}
return sb.toString();
}
protected final void compute() {
ArrayList<Double> xcoord = new ArrayList<Double>();
ArrayList<Double> ycoord = new ArrayList<Double>();
double[] coords = new double[6];
double[] oldCoords = new double[6];
// Convert input polygons to Area objects
Area a1 = getArea(inPoly0.getPoints());
Area a2 = getArea(inPoly1.getPoints());
// test for empty intersection
Area testArea = getArea(inPoly0.getPoints());
testArea.intersect(a2);
if (testArea.isEmpty()) {
poly.setUndefined();
}
// if intersection is non-empty perform operation
else {
switch (operationType) {
case TYPE_INTERSECTION:
a1.intersect(a2);
break;
case TYPE_UNION:
a1.add(a2);
break;
case TYPE_DIFFERENCE:
a1.subtract(a2);
break;
}
// Iterate through the path of the result
// and recover the polygon vertices.
PathIterator it = a1.getPathIterator(null);
int type = it.currentSegment(coords);
it.next();
oldCoords = coords.clone();
double epsilon = 1E-10;
while (!it.isDone()) {
type = it.currentSegment(coords);
if (type == PathIterator.SEG_CLOSE) {
break;
}
// Sometimes the Path iterator gives two almost identical points and
// we only want one of them.
// TODO: Why does this happen???
if ((double) Math.abs(oldCoords[0] - coords[0]) > epsilon
|| (double) Math.abs(oldCoords[1] - coords[1]) > epsilon) {
xcoord.add(coords[0]);
ycoord.add(coords[1]);
}
oldCoords = coords.clone();
it.next();
}
}
// Update the points array to the correct size
int n = xcoord.size();
// System.out.println("number of points: " + n);
int oldPointNumber = points.length;
if (n != oldPointNumber) {
updatePointsArray(n);
poly.setPoints(points);
setOutput();
}
// Set the points to the new polygon vertices
for (int k = 0; k < n; k++) {
points[k].setCoords(xcoord.get(k), ycoord.get(k), 1);
// System.out.println("vertices: " + xcoord.get(k) + " , " + ycoord.get(k));
}
// Compute area of poly (this will also set our poly geo to be defined)
poly.calcArea();
// update new points and segments
if (n != oldPointNumber) {
updateSegmentsAndPointsLabels(oldPointNumber);
}
}