Examples with Vector3 org.sunflow.math.Vector3 used on opensource projects

Example 26 with Vector3

use of org.sunflow.math.Vector3 in project joons-renderer by joonhyublee.

the class NormalShader method getRadiance.

public Color getRadiance(ShadingState state) {
    Vector3 n = state.getNormal();
    if (n == null) {
        return Color.BLACK;
    }
    float r = (n.x + 1) * 0.5f;
    float g = (n.y + 1) * 0.5f;
    float b = (n.z + 1) * 0.5f;
    return new Color(r, g, b);
}

Example 27 with Vector3

use of org.sunflow.math.Vector3 in project joons-renderer by joonhyublee.

the class ShinyDiffuseShader method scatterPhoton.

public void scatterPhoton(ShadingState state, Color power) {
    Color diffuse;
    // make sure we are on the right side of the material
    state.faceforward();
    diffuse = getDiffuse(state);
    state.storePhoton(state.getRay().getDirection(), power, diffuse);
    float d = diffuse.getAverage();
    float r = d * refl;
    double rnd = state.getRandom(0, 0, 1);
    if (rnd < d) {
        // photon is scattered
        power.mul(diffuse).mul(1.0f / d);
        OrthoNormalBasis onb = state.getBasis();
        double u = 2 * Math.PI * rnd / d;
        double v = state.getRandom(0, 1, 1);
        float s = (float) Math.sqrt(v);
        float s1 = (float) Math.sqrt(1.0 - v);
        Vector3 w = new Vector3((float) Math.cos(u) * s, (float) Math.sin(u) * s, s1);
        w = onb.transform(w, new Vector3());
        state.traceDiffusePhoton(new Ray(state.getPoint(), w), power);
    } else if (rnd < d + r) {
        float cos = -Vector3.dot(state.getNormal(), state.getRay().getDirection());
        power.mul(diffuse).mul(1.0f / d);
        // photon is reflected
        float dn = 2 * cos;
        Vector3 dir = new Vector3();
        dir.x = (dn * state.getNormal().x) + state.getRay().getDirection().x;
        dir.y = (dn * state.getNormal().y) + state.getRay().getDirection().y;
        dir.z = (dn * state.getNormal().z) + state.getRay().getDirection().z;
        state.traceReflectionPhoton(new Ray(state.getPoint(), dir), power);
    }
}

Example 28 with Vector3

use of org.sunflow.math.Vector3 in project joons-renderer by joonhyublee.

the class CornellBox method prepareShadingState.

@Override
public void prepareShadingState(ShadingState state) {
    state.init();
    state.getRay().getPoint(state.getPoint());
    int n = state.getPrimitiveID();
    switch(n) {
        case 0:
            state.getNormal().set(new Vector3(1, 0, 0));
            break;
        case 1:
            state.getNormal().set(new Vector3(-1, 0, 0));
            break;
        case 2:
            state.getNormal().set(new Vector3(0, 1, 0));
            break;
        case 3:
            state.getNormal().set(new Vector3(0, -1, 0));
            break;
        case 4:
            state.getNormal().set(new Vector3(0, 0, 1));
            break;
        case 5:
            state.getNormal().set(new Vector3(0, 0, -1));
            break;
        default:
            state.getNormal().set(new Vector3(0, 0, 0));
            break;
    }
    state.getGeoNormal().set(state.getNormal());
    state.setBasis(OrthoNormalBasis.makeFromW(state.getNormal()));
    state.setShader(this);
}

Example 29 with Vector3

use of org.sunflow.math.Vector3 in project joons-renderer by joonhyublee.

the class Plane method prepareShadingState.

@Override
public void prepareShadingState(ShadingState state) {
    state.init();
    state.getRay().getPoint(state.getPoint());
    Instance parent = state.getInstance();
    Vector3 worldNormal = state.transformNormalObjectToWorld(normal);
    state.getNormal().set(worldNormal);
    state.getGeoNormal().set(worldNormal);
    state.setShader(parent.getShader(0));
    state.setModifier(parent.getModifier(0));
    Point3 p = state.transformWorldToObject(state.getPoint());
    float hu, hv;
    switch(k) {
        case 0:
            {
                hu = p.y;
                hv = p.z;
                break;
            }
        case 1:
            {
                hu = p.z;
                hv = p.x;
                break;
            }
        case 2:
            {
                hu = p.x;
                hv = p.y;
                break;
            }
        default:
            hu = hv = 0;
    }
    state.getUV().x = hu * bnu + hv * bnv + bnd;
    state.getUV().y = hu * cnu + hv * cnv + cnd;
    state.setBasis(OrthoNormalBasis.makeFromW(normal));
}

Example 30 with Vector3

use of org.sunflow.math.Vector3 in project joons-renderer by joonhyublee.

the class MirrorShader method getRadiance.

public Color getRadiance(ShadingState state) {
    if (!state.includeSpecular()) {
        return Color.BLACK;
    }
    state.faceforward();
    float cos = state.getCosND();
    float dn = 2 * cos;
    Vector3 refDir = new Vector3();
    refDir.x = (dn * state.getNormal().x) + state.getRay().getDirection().x;
    refDir.y = (dn * state.getNormal().y) + state.getRay().getDirection().y;
    refDir.z = (dn * state.getNormal().z) + state.getRay().getDirection().z;
    Ray refRay = new Ray(state.getPoint(), refDir);
    // compute Fresnel term
    cos = 1 - cos;
    float cos2 = cos * cos;
    float cos5 = cos2 * cos2 * cos;
    Color ret = Color.white();
    ret.sub(color);
    ret.mul(cos5);
    ret.add(color);
    return ret.mul(state.traceReflection(refRay, 0));
}