Examples with Loopable org.twak.utils.collections.Loopable used on opensource projects

Example 1 with Loopable

use of org.twak.utils.collections.Loopable in project chordatlas by twak.

the class SliceSolver method dataFit.

private static double dataFit(LineSoup filtered, LoopL<Point2d> out) {
    if (out.isEmpty() || filtered.all.isEmpty())
        return Double.MAX_VALUE;
    double totalDist = 0;
    for (Line sl : filtered.all) {
        double bestDist = Double.MAX_VALUE;
        for (Loop<Point2d> loop : out) for (Loopable<Point2d> ll : loop.loopableIterator()) bestDist = Math.min(bestDist, new Line(ll.get(), ll.getNext().get()).distance(sl));
        totalDist += bestDist;
    }
    return totalDist / filtered.all.size();
}

Example 2 with Loopable

use of org.twak.utils.collections.Loopable in project chordatlas by twak.

the class CutHoles method cutHoles.

public static void cutHoles(LoopL<Point2d> out, double tol, Map<Point2d, Line> created) {
    MultiMap<Boolean, Loop<Point2d>> holeToLoop = new MultiMap<>();
    Iterator<Loop<Point2d>> lit = out.iterator();
    while (lit.hasNext()) {
        // a hole can be a backwards loop...
        Loop<Point2d> loop = lit.next();
        double area = Loopz.area(loop);
        if (Math.abs(area) < tol * tol)
            lit.remove();
        boolean isHole = area > 0;
        holeToLoop.put(isHole, loop);
        for (Loop<Point2d> h : loop.holes) {
            if (Loopz.area(h) > 0)
                h.reverse();
            holeToLoop.put(false, h);
        }
    }
    for (Loop<Point2d> hole : holeToLoop.get(false)) {
        Point2d origin = new Point2d(Double.MAX_VALUE, 0);
        Loopable<Point2d> originL = null;
        for (Loopable<Point2d> p : hole.loopableIterator()) {
            if (p.get().x < origin.x) {
                originL = p;
                origin = originL.get();
            }
        }
        LinearForm ray = new LinearForm(0, 1);
        ray.findC(origin);
        double nearestD = Double.MAX_VALUE;
        Loopable<Point2d> nearestL = null;
        Point2d nearestH = null;
        for (Loop<Point2d> loop : out) {
            for (Loopable<Point2d> line : loop.loopableIterator()) {
                Point2d a = line.get(), b = line.getNext().get();
                if (a.y > origin.y && b.y < origin.y || a.y < origin.y && b.y > origin.y) {
                    Point2d hit = new Line(a, b).intersects(ray);
                    if (hit != null && hit.x < origin.x && (origin.x - hit.x < nearestD)) {
                        nearestD = origin.x - hit.x;
                        nearestL = line;
                        nearestH = hit;
                    }
                }
            }
        }
        if (nearestH == null)
            System.err.println("failed to find outer ring for hole");
        else {
            if (created != null)
                created.put(nearestH, new Line(nearestL.get(), nearestL.getNext().get()));
            Loopable<Point2d> hitPtF = new Loopable<Point2d>(nearestH), hitPtS = new Loopable<Point2d>(nearestH), originL2 = new Loopable(origin);
            hitPtS.setNext(nearestL.getNext());
            hitPtF.setPrev(nearestL);
            hitPtS.getNext().setPrev(hitPtS);
            hitPtF.getPrev().setNext(hitPtF);
            originL.getNext().setPrev(originL2);
            originL2.setNext(originL.getNext());
            originL.setNext(hitPtS);
            hitPtS.setPrev(originL);
            hitPtF.setNext(originL2);
            originL2.setPrev(hitPtF);
        }
        out.remove(hole);
    }
}