Examples with Point3 org.sunflow.math.Point3 used on opensource projects

Example 16 with Point3

use of org.sunflow.math.Point3 in project joons-renderer by joonhyublee.

the class GlobalPhotonMap method store.

@Override
public void store(ShadingState state, Vector3 dir, Color power, Color diffuse) {
    Photon p = new Photon(state.getPoint(), state.getNormal(), dir, power, diffuse);
    synchronized (this) {
        storedPhotons++;
        photonList.add(p);
        bounds.include(new Point3(p.x, p.y, p.z));
        maxPower = Math.max(maxPower, power.getMax());
    }
}

Example 17 with Point3

use of org.sunflow.math.Point3 in project joons-renderer by joonhyublee.

the class CausticPhotonMap method getSamples.

@Override
public void getSamples(ShadingState state) {
    if (storedPhotons == 0) {
        return;
    }
    NearestPhotons np = new NearestPhotons(state.getPoint(), gatherNum, gatherRadius * gatherRadius);
    locatePhotons(np);
    if (np.found < 8) {
        return;
    }
    Point3 ppos = new Point3();
    Vector3 pdir = new Vector3();
    Vector3 pvec = new Vector3();
    float invArea = 1.0f / ((float) Math.PI * np.dist2[0]);
    float maxNDist = np.dist2[0] * 0.05f;
    float f2r2 = 1.0f / (filterValue * filterValue * np.dist2[0]);
    float fInv = 1.0f / (1.0f - 2.0f / (3.0f * filterValue));
    for (int i = 1; i <= np.found; i++) {
        Photon phot = np.index[i];
        Vector3.decode(phot.dir, pdir);
        float cos = -Vector3.dot(pdir, state.getNormal());
        if (cos > 0.001) {
            ppos.set(phot.x, phot.y, phot.z);
            Point3.sub(ppos, state.getPoint(), pvec);
            float pcos = Vector3.dot(pvec, state.getNormal());
            if ((pcos < maxNDist) && (pcos > -maxNDist)) {
                LightSample sample = new LightSample();
                sample.setShadowRay(new Ray(state.getPoint(), pdir.negate()));
                sample.setRadiance(new Color().setRGBE(np.index[i].power).mul(invArea / cos), Color.BLACK);
                sample.getDiffuseRadiance().mul((1.0f - (float) Math.sqrt(np.dist2[i] * f2r2)) * fInv);
                state.addSample(sample);
            }
        }
    }
}

Example 18 with Point3

use of org.sunflow.math.Point3 in project joons-renderer by joonhyublee.

the class GridPhotonMap method store.

@Override
public void store(ShadingState state, Vector3 dir, Color power, Color diffuse) {
    // don't store on the wrong side of a surface
    if (Vector3.dot(state.getNormal(), dir) > 0) {
        return;
    }
    Point3 pt = state.getPoint();
    // outside grid bounds ?
    if (!bounds.contains(pt)) {
        return;
    }
    Vector3 ext = bounds.getExtents();
    int ix = (int) (((pt.x - bounds.getMinimum().x) * nx) / ext.x);
    int iy = (int) (((pt.y - bounds.getMinimum().y) * ny) / ext.y);
    int iz = (int) (((pt.z - bounds.getMinimum().z) * nz) / ext.z);
    ix = MathUtils.clamp(ix, 0, nx - 1);
    iy = MathUtils.clamp(iy, 0, ny - 1);
    iz = MathUtils.clamp(iz, 0, nz - 1);
    int id = ix + iy * nx + iz * nx * ny;
    synchronized (this) {
        int hid = id % cellHash.length;
        PhotonGroup g = cellHash[hid];
        PhotonGroup last = null;
        boolean hasID = false;
        while (g != null) {
            if (g.id == id) {
                hasID = true;
                if (Vector3.dot(state.getNormal(), g.normal) > NORMAL_THRESHOLD) {
                    break;
                }
            }
            last = g;
            g = g.next;
        }
        if (g == null) {
            g = new PhotonGroup(id, state.getNormal());
            if (last == null) {
                cellHash[hid] = g;
            } else {
                last.next = g;
            }
            if (!hasID) {
                // we have not seen this ID before
                hashSize++;
                // resize hash if we have grown too large
                if (hashSize > cellHash.length) {
                    growPhotonHash();
                }
            }
        }
        g.count++;
        g.flux.add(power);
        g.diffuse.add(diffuse);
        numStoredPhotons++;
    }
}

Example 19 with Point3

use of org.sunflow.math.Point3 in project joons-renderer by joonhyublee.

the class BanchoffSurface method prepareShadingState.

@Override
public void prepareShadingState(ShadingState state) {
    state.init();
    state.getRay().getPoint(state.getPoint());
    Instance parent = state.getInstance();
    Point3 n = state.transformWorldToObject(state.getPoint());
    state.getNormal().set(n.x * (2 * n.x * n.x - 1), n.y * (2 * n.y * n.y - 1), n.z * (2 * n.z * n.z - 1));
    state.getNormal().normalize();
    state.setShader(parent.getShader(0));
    state.setModifier(parent.getModifier(0));
    // into world space
    Vector3 worldNormal = state.transformNormalObjectToWorld(state.getNormal());
    state.getNormal().set(worldNormal);
    state.getNormal().normalize();
    state.getGeoNormal().set(state.getNormal());
    // create basis in world space
    state.setBasis(OrthoNormalBasis.makeFromW(state.getNormal()));
}

Example 20 with Point3

use of org.sunflow.math.Point3 in project joons-renderer by joonhyublee.

the class CornellBox method update.

@Override
public boolean update(ParameterList pl, SunflowAPI api) {
    Point3 corner0 = pl.getPoint("corner0", null);
    Point3 corner1 = pl.getPoint("corner1", null);
    if (corner0 != null && corner1 != null) {
        updateGeometry(corner0, corner1);
    }
    // shader colors
    left = pl.getColor("leftColor", left);
    right = pl.getColor("rightColor", right);
    top = pl.getColor("topColor", top);
    bottom = pl.getColor("bottomColor", bottom);
    back = pl.getColor("backColor", back);
    // light
    radiance = pl.getColor("radiance", radiance);
    samples = pl.getInt("samples", samples);
    return true;
}