Examples with LineSegmentIndex com.revolsys.geometry.index.LineSegmentIndex used on opensource projects

Example 1 with LineSegmentIndex

use of com.revolsys.geometry.index.LineSegmentIndex in project com.revolsys.open by revolsys.

the class Lineal method addIsSimpleErrors.

static boolean addIsSimpleErrors(final Lineal lineal, final List<GeometryValidationError> errors, final boolean shortCircuit) {
    final LineSegmentIndex index = new LineSegmentIndex(lineal);
    for (final Segment segment : lineal.segments()) {
        final int segmentIndex = segment.getSegmentIndex();
        final int partIndex = segment.getPartIndex();
        if (segment.getLength() == 0) {
            errors.add(new DuplicateVertexError(segment.getGeometryVertex(0)));
        } else {
            final List<LineSegment> segments = index.queryBoundingBox(segment);
            for (final LineSegment lineSegment : segments) {
                final Segment segment2 = (Segment) lineSegment;
                final int partIndex2 = segment2.getPartIndex();
                final int segmentIndex2 = segment2.getSegmentIndex();
                if (partIndex2 > partIndex || partIndex == partIndex2 && segmentIndex2 > segmentIndex) {
                    if (segment.equals(lineSegment)) {
                        final SelfOverlapSegmentError error = new SelfOverlapSegmentError(segment);
                        errors.add(error);
                        if (shortCircuit) {
                            return false;
                        }
                    } else {
                        final Geometry intersection = segment.getIntersection(lineSegment);
                        if (intersection instanceof Point) {
                            final Point pointIntersection = (Point) intersection;
                            boolean isIntersection = true;
                            // Process segments on the same linestring part
                            if (partIndex == partIndex2) {
                                // segment
                                if (segmentIndex + 1 == segmentIndex2) {
                                    if (lineSegment.equalsVertex(2, 0, pointIntersection)) {
                                        isIntersection = false;
                                    }
                                // A loop can touch itself at the start/end
                                } else if (segment.isLineClosed()) {
                                    if (segment.isLineStart() && segment2.isLineEnd()) {
                                        if (segment.equalsVertex(2, 0, pointIntersection)) {
                                            isIntersection = false;
                                        }
                                    }
                                }
                            } else {
                                if (!segment.isLineClosed() && !segment2.isLineClosed()) {
                                    final boolean segment1EndIntersection = segment.isEndIntersection(pointIntersection);
                                    final boolean segment2EndIntersection = segment2.isEndIntersection(pointIntersection);
                                    if (segment1EndIntersection && segment2EndIntersection) {
                                        isIntersection = false;
                                    }
                                }
                            }
                            if (isIntersection) {
                                GeometryValidationError error;
                                if (segment.equalsVertex(2, 0, pointIntersection)) {
                                    final Vertex vertex = segment.getGeometryVertex(0);
                                    error = new SelfIntersectionVertexError(vertex);
                                } else if (segment.equalsVertex(2, 1, pointIntersection)) {
                                    final Vertex vertex = segment.getGeometryVertex(1);
                                    error = new SelfIntersectionVertexError(vertex);
                                } else {
                                    error = new SelfIntersectionPointError(lineal, pointIntersection);
                                }
                                errors.add(error);
                                if (shortCircuit) {
                                    return false;
                                }
                            }
                        } else if (intersection instanceof LineSegment) {
                            final LineSegment lineIntersection = (LineSegment) intersection;
                            GeometryValidationError error;
                            if (segment.equals(lineIntersection)) {
                                error = new SelfOverlapSegmentError(segment);
                            } else if (lineSegment.equals(lineIntersection)) {
                                error = new SelfOverlapSegmentError(segment2);
                            } else {
                                error = new SelfOverlapLineSegmentError(lineal, lineIntersection);
                            }
                            errors.add(error);
                            if (shortCircuit) {
                                return false;
                            }
                        }
                    }
                }
            }
        }
    }
    return errors.isEmpty();
}