Examples of ca.eandb.jmist.math.SphericalCoordinates.polar()

Class ca.eandb.jmist.math.SphericalCoordinates

Examples of ca.eandb.jmist.math.SphericalCoordinates.polar()

ca.eandb.jmist.math.SphericalCoordinates.polar()
The angle (in radians) between the vector and the positive z-axis. @return The angle (in radians) between the vector and the positivez-axis.

      Vector3 v = q.isPoint() ? q.toPoint3().unitVectorFromOrigin()
                          : q.toVector3().unit();
      SphericalCoordinates sc = SphericalCoordinates.fromCartesian(v,
          BASIS);
      double x = sc.azimuthal() / (2.0 * Math.PI);
      double y = 0.5 * (1.0 - Math.cos(sc.polar()));
      if (x < 0.0) {
        x += 1.0;
      }
      return new Point2(x, y);
    }

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//
//        Gj += ujk * vjk;
//      }
      double Gj = MathUtil.bilinearInterpolate(
          0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, G[j],
          omegaP.polar(), phiP, false, true);


      spf += Fj * Gj;
    }


    double intensity = spf / NdotI;

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    double Fb = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Fc[2],
        omegaO.polar(), phiO);
    double Gr = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[0],
        omegaP.polar(), phiP);
    double Gg = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[1],
        omegaP.polar(), phiP);
    double Gb = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[2],

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    double Gr = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[0],
        omegaP.polar(), phiP);
    double Gg = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[1],
        omegaP.polar(), phiP);
    double Gb = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[2],
        omegaP.polar(), phiP);


    double r = Fr * Gr * intensity;

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    double Gg = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[1],
        omegaP.polar(), phiP);
    double Gb = MathUtil.bilinearInterpolate(
        0, 0.5 * Math.PI, 0.0, 2.0 * Math.PI, Gc[2],
        omegaP.polar(), phiP);


    double r = Fr * Gr * intensity;
    double g = Fg * Gg * intensity;
    double b = Fb * Gb * intensity;
//    double r = intensity;

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   * @see ca.eandb.jmist.framework.RayShader#shadeRay(ca.eandb.jmist.math.Ray3, ca.eandb.jmist.framework.color.WavelengthPacket)
   */
  public Color shadeRay(Ray3 ray, WavelengthPacket lambda) {
    SphericalCoordinates sc = SphericalCoordinates.fromCartesian(ray.direction(), basis);
    double theta = -sc.azimuthal();
    double r = 0.5 * (1.0 - (Math.PI - sc.polar()) / Math.PI);
    Point2 uv = new Point2(
        0.5 + r * Math.cos(theta),
        0.5 + r * Math.sin(theta));
    return texture.evaluate(uv, lambda);
  }

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   */
  public Color shadeRay(Ray3 ray, WavelengthPacket lambda) {
    SphericalCoordinates sc = SphericalCoordinates.fromCartesian(ray.direction(), basis);
    Point2 uv = new Point2(
        (sc.azimuthal() + Math.PI) / (2.0 * Math.PI),
        sc.polar() / Math.PI);
    return texture.evaluate(uv, lambda);
  }


}

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  public Color shadeRay(Ray3 ray, WavelengthPacket lambda) {
    if (ray.direction().dot(basis.w()) >= 0.0) {
      SphericalCoordinates sc = SphericalCoordinates.fromCartesian(ray.direction(), basis);
      Point2 uv = new Point2(
          (sc.azimuthal() + Math.PI) / (2.0 * Math.PI),
          2.0 * sc.polar() / Math.PI);
      return texture.evaluate(uv, lambda);
    } else {
      return background.shadeRay(ray, lambda);
    }
  }

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                specimenIndex,
                incidentAngle.polar(),
                incidentAngle.azimuthal(),
                wavelengthIndex,
                sensor,
                exitantAngle.polar(),
                exitantAngle.azimuthal(),
                solidAngle,
                projectedSolidAngle,
                this.outstandingSamplesPerMeasurement,
                colorToCSV(raw),

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  public static SphericalCoordinates uniformOnUpperHemisphere(double radius, double ru, double rv) {


    // TODO implement this directly so it's more efficient.
    SphericalCoordinates result = uniformOnSphere(radius, ru, rv);


    if (result.polar() > (Math.PI / 2.0))
      result = new SphericalCoordinates(Math.PI - result.polar(), result.azimuthal(), radius);


    return result;


  }

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