Examples with Point2d javax.vecmath.Point2d used on opensource projects

Example 56 with Point2d

use of javax.vecmath.Point2d 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);
    }
}

Example 57 with Point2d

use of javax.vecmath.Point2d in project chordatlas by twak.

the class FacadeFinder method adjacentDist.

public double adjacentDist(Line l, Point2d pt) {
    Vector2d v1 = new Vector2d(l.end);
    v1.sub(l.start);
    Vector2d v2 = new Vector2d(pt);
    v2.sub(l.start);
    double param = v2.dot(v1) / v1.length();
    if (param < 0 || param > v1.length())
        return Double.MAX_VALUE;
    v1.normalize();
    v1.scale(param);
    v1.add(l.start);
    return new Point2d(v1).distance(pt);
}

Example 58 with Point2d

use of javax.vecmath.Point2d in project chordatlas by twak.

the class FacadeFinder method guessHeight.

private double guessHeight(List<Point3d> meshPoints, Line l) {
    double height;
    height = 2;
    for (Point3d pt : meshPoints) {
        if (adjacentDist(l, new Point2d(pt.x, pt.z)) < 2)
            height = Math.max(height, pt.y);
    }
    return height;
}

Example 59 with Point2d

use of javax.vecmath.Point2d in project chordatlas by twak.

the class Concarnie method findSupporting.

private Line findSupporting(Loopable<Point2d> pt, int dir) {
    double totalDist = 0;
    Point2d ptg = pt.get();
    Loopable<Point2d> current = pt;
    int count = 0;
    do {
        Point2d a = current.get(), b = current.move(dir).get();
        if (dir < 0) {
            Point2d tmp = a;
            a = b;
            b = tmp;
        }
        Line hull = new Line(a, b);
        double bestDist = Double.MAX_VALUE;
        Line bestLine = null;
        for (Line l : new ItComb<>(in.getNear(hull.start, 0.5), in.getNear(hull.end, 0.5))) if (Anglez.dist(l.aTan2(), hull.aTan2()) < 0.2 && maxPerpDistance(l, hull) < 0.2) {
            double dist = l.distance(ptg, true);
            if (dist < bestDist) {
                bestDist = dist;
                bestLine = l;
            }
        }
        if (bestLine != null)
            return bestLine;
        totalDist += hull.length();
        current = current.move(dir);
    } while (totalDist < 1 && count++ < 30);
    return null;
}

Example 60 with Point2d

use of javax.vecmath.Point2d in project chordatlas by twak.

the class Concarnie method signedArea.

private double signedArea(Collection<Line> set) {
    double ax = set.stream().collect(Collectors.averagingDouble(l -> l.start.x)).doubleValue(), ay = set.stream().collect(Collectors.averagingDouble(l -> l.start.y)).doubleValue();
    Point2d cen = new Point2d(ax, ay);
    double c = set.stream().collect(Collectors.summingDouble(x -> Mathz.area(cen, x.end, x.start))).doubleValue();
    return c;
}