Examples with Location com.revolsys.geometry.model.Location used on opensource projects

Example 16 with Location

use of com.revolsys.geometry.model.Location in project com.revolsys.open by revolsys.

the class EdgeEndStar method propagateSideLabels.

void propagateSideLabels(final int geomIndex) {
    // Since edges are stored in CCW order around the node,
    // As we move around the ring we move from the right to the left side of the
    // edge
    Location startLoc = Location.NONE;
    // System.out.println("finding start location");
    for (final EdgeEnd e : this) {
        final Label label = e.getLabel();
        if (label.isArea(geomIndex) && label.getLocation(geomIndex, Position.LEFT) != Location.NONE) {
            startLoc = label.getLocation(geomIndex, Position.LEFT);
        }
    }
    // no labelled sides found, so no labels to propagate
    if (startLoc == Location.NONE) {
        return;
    }
    Location currLoc = startLoc;
    for (final EdgeEnd e : this) {
        final Label label = e.getLabel();
        // set null ON values to be in current location
        if (label.getLocation(geomIndex, Position.ON) == Location.NONE) {
            label.setLocation(geomIndex, Position.ON, currLoc);
        }
        // set side labels (if any)
        if (label.isArea(geomIndex)) {
            final Location leftLoc = label.getLocation(geomIndex, Position.LEFT);
            final Location rightLoc = label.getLocation(geomIndex, Position.RIGHT);
            // if there is a right location, that is the next location to propagate
            if (rightLoc != Location.NONE) {
                // Debug.print(rightLoc != currLoc, this);
                if (rightLoc != currLoc) {
                    throw new TopologyException("side location conflict", e.getCoordinate());
                }
                if (leftLoc == Location.NONE) {
                    Assert.shouldNeverReachHere("found single null side (at " + e.getCoordinate() + ")");
                }
                currLoc = leftLoc;
            } else {
                /**
                 * RHS is null - LHS must be null too.
                 *  This must be an edge from the other geometry, which has no location
                 *  labelling for this geometry.  This edge must lie wholly inside or outside
                 *  the other geometry (which is determined by the current location).
                 *  Assign both sides to be the current location.
                 */
                if (label.getLocation(geomIndex, Position.LEFT) != Location.NONE) {
                    throw new IllegalStateException("found single null side");
                }
                label.setLocation(geomIndex, Position.RIGHT, currLoc);
                label.setLocation(geomIndex, Position.LEFT, currLoc);
            }
        }
    }
}

Example 17 with Location

use of com.revolsys.geometry.model.Location in project com.revolsys.open by revolsys.

the class Node method setLabelBoundary.

/**
 * Updates the label of a node to BOUNDARY,
 * obeying the mod-2 boundaryDetermination rule.
 */
public void setLabelBoundary(final int argIndex) {
    if (this.label == null) {
        return;
    }
    // determine the current location for the point (if any)
    Location loc = Location.NONE;
    if (this.label != null) {
        loc = this.label.getLocation(argIndex);
    }
    // flip the loc
    Location newLoc;
    switch(loc) {
        case BOUNDARY:
            newLoc = Location.INTERIOR;
            break;
        case INTERIOR:
            newLoc = Location.BOUNDARY;
            break;
        default:
            newLoc = Location.BOUNDARY;
            break;
    }
    this.label.setLocation(argIndex, newLoc);
}

Example 18 with Location

use of com.revolsys.geometry.model.Location in project com.revolsys.open by revolsys.

the class Node method mergeLabel.

/**
 * To merge labels for two nodes,
 * the merged location for each LabelElement is computed.
 * The location for the corresponding node LabelElement is set to the result,
 * as long as the location is non-null.
 */
public void mergeLabel(final Label label2) {
    for (int i = 0; i < 2; i++) {
        final Location loc = computeMergedLocation(label2, i);
        final Location thisLoc = this.label.getLocation(i);
        if (thisLoc == Location.NONE) {
            this.label.setLocation(i, loc);
        }
    }
}

Example 19 with Location

use of com.revolsys.geometry.model.Location in project com.revolsys.open by revolsys.

the class Buffer method depthDelta.

/**
 * Compute the change in depth as an edge is crossed from R to L
 */
private static int depthDelta(final Label label) {
    final Location lLoc = label.getLocation(0, Position.LEFT);
    final Location rLoc = label.getLocation(0, Position.RIGHT);
    if (lLoc == Location.INTERIOR && rLoc == Location.EXTERIOR) {
        return 1;
    } else if (lLoc == Location.EXTERIOR && rLoc == Location.INTERIOR) {
        return -1;
    }
    return 0;
}

Example 20 with Location

use of com.revolsys.geometry.model.Location in project com.revolsys.open by revolsys.

the class PointInAreaStressTester method testPIA.

/**
 * @param p
 * @return true if the point location is determined to be the same by both PIA locaters
 */
private boolean testPIA(final Point p) {
    // System.out.println(WKTWriter.toPoint(p));
    final Location loc1 = this.pia1.locate(p);
    final Location loc2 = this.pia2.locate(p);
    this.locationCount[loc1.getIndex()]++;
    if ((loc1 == Location.BOUNDARY || loc2 == Location.BOUNDARY) && this.ignoreBoundaryResults) {
        return true;
    }
    return loc1 == loc2;
}