Examples with IParticleRecord gaiasky.scenegraph.particle.IParticleRecord used on opensource projects

Example 36 with IParticleRecord

use of gaiasky.scenegraph.particle.IParticleRecord in project gaiasky by langurmonkey.

the class ParticleGroup method computeMinMeanMaxDistances.

public void computeMinMeanMaxDistances() {
    meanDistance = 0;
    maxDistance = Double.MIN_VALUE;
    minDistance = Double.MAX_VALUE;
    List<Double> distances = new ArrayList<>();
    for (IParticleRecord point : pointData) {
        // Add sample to mean distance
        double dist = len(point.x(), point.y(), point.z());
        if (Double.isFinite(dist)) {
            distances.add(dist);
            maxDistance = Math.max(maxDistance, dist);
            minDistance = Math.min(minDistance, dist);
        }
    }
    // Mean is computed as half of the 90th percentile to avoid outliers
    distances.sort(Double::compare);
    int idx = (int) Math.ceil((90d / 100d) * (double) distances.size());
    meanDistance = distances.get(idx - 1) / 2d;
}

Example 37 with IParticleRecord

use of gaiasky.scenegraph.particle.IParticleRecord in project gaiasky by langurmonkey.

the class ParticleGroup method addHit.

public void addHit(Vector3d p0, Vector3d p1, NaturalCamera camera, Array<IFocus> hits) {
    int n = pointData.size();
    if (GaiaSky.instance.isOn(ct) && this.opacity > 0) {
        Vector3d beamDir = new Vector3d();
        Array<Pair<Integer, Double>> temporalHits = new Array<>();
        for (int i = 0; i < n; i++) {
            if (filter(i)) {
                IParticleRecord pb = pointData.get(i);
                Vector3d posd = fetchPosition(pb, cPosD, D31.get(), getDeltaYears());
                beamDir.set(p1).sub(p0);
                if (camera.direction.dot(posd) > 0) {
                    // The star is in front of us
                    // Diminish the size of the star
                    // when we are close by
                    double dist = posd.len();
                    double angle = getRadius(i) / dist / camera.getFovFactor();
                    double distToLine = Intersectord.distanceLinePoint(p0, p1, posd.put(D31.get()));
                    double value = distToLine / dist;
                    if (value < 0.01) {
                        temporalHits.add(new Pair<>(i, angle));
                    }
                }
            }
        }
        Pair<Integer, Double> best = null;
        for (Pair<Integer, Double> hit : temporalHits) {
            if (best == null)
                best = hit;
            else if (hit.getSecond() > best.getSecond()) {
                best = hit;
            }
        }
        if (best != null) {
            // We found the best hit
            candidateFocusIndex = best.getFirst();
            updateFocusDataPos();
            hits.add(this);
            return;
        }
    }
    candidateFocusIndex = -1;
    updateFocusDataPos();
}

Example 38 with IParticleRecord

use of gaiasky.scenegraph.particle.IParticleRecord in project gaiasky by langurmonkey.

the class ParticleGroup method computeGeomCentre.

/**
 * Computes the geometric centre of this data cloud
 *
 * @param forceRecompute Recomputes the geometric centre even if it has been already computed
 */
public Vector3d computeGeomCentre(boolean forceRecompute) {
    if (pointData != null && (forceRecompute || geomCentre == null)) {
        geomCentre = new Vector3d(0, 0, 0);
        int n = pointData.size();
        for (IParticleRecord pb : pointData) {
            geomCentre.add(pb.x(), pb.y(), pb.z());
        }
        geomCentre.scl(1d / (double) n);
    }
    return geomCentre;
}

Example 39 with IParticleRecord

use of gaiasky.scenegraph.particle.IParticleRecord in project gaiasky by langurmonkey.

the class ParticleGroup method updateMetadata.

/**
 * Updates the metadata information, to use for sorting. For particles, only the position (distance
 * from camera) is important.
 *
 * @param time   The time frame provider.
 * @param camera The camera.
 */
public void updateMetadata(ITimeFrameProvider time, ICamera camera) {
    Vector3b camPos = camera.getPos();
    int n = pointData.size();
    for (int i = 0; i < n; i++) {
        IParticleRecord d = pointData.get(i);
        // Pos
        Vector3d x = D31.get().set(d.x(), d.y(), d.z());
        metadata[i] = filter(i) ? camPos.dst2d(x) : Double.MAX_VALUE;
    }
}

Example 40 with IParticleRecord

use of gaiasky.scenegraph.particle.IParticleRecord in project gaiasky by langurmonkey.

the class ParticleGroup method getAbsolutePosition.

public Vector3b getAbsolutePosition(String name, Vector3b out) {
    if (index.containsKey(name)) {
        int idx = index.get(name);
        IParticleRecord pb = pointData.get(idx);
        out.set(pb.x(), pb.y(), pb.z());
        return out;
    } else {
        return null;
    }
}