Examples of ca.eandb.jmist.math.Point2

ca.eandb.jmist.math.Point2
A location in two dimensional space. This class is immutable. @author Brad Kimmel

    /* (non-Javadoc)
     * @see ca.eandb.jmist.framework.path.PathNode#sample(double, double, double)
     */
    @Override
    public ScatteredRay sample(double ru, double rv, double rj) {
      Point2    p    = pointOnImagePlane;
      double    nx    = 2.0 * (p.x() - 0.5);
      double    ny    = 2.0 * (0.5 - p.y());


      Ray3    init  = new Ray3(new Point3(nx, ny, 1.0), Vector3.K);
      Interval  I    = LENS_SPHERE.intersect(init);


      if (I.isEmpty()) {

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   * @param circle The circle to include in the bounding box.
   */
  public void add(Circle circle) {
    if (!circle.isEmpty()) {
      double r = circle.radius();
      Point2 c = circle.center();


      if (this.isEmpty()) {
        minimumX = c.x() - r;
        minimumY = c.y() - r;
        maximumX = c.x() + r;
        maximumY = c.y() + r;
      } else {
        minimumX = Math.min(c.x() - r, minimumX);
        minimumY = Math.min(c.y() - r, minimumY);
        maximumX = Math.max(c.x() + r, maximumX);
        maximumY = Math.max(c.y() + r, maximumY);
      }
    }
  }

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      final double  v        = 0.5 - y / objPlaneHeight;
      if (!MathUtil.inRangeCC(v, 0.0, 1.0)) {
        return null;
      }


      return new Point2(u, v);
    }

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    /* (non-Javadoc)
     * @see ca.eandb.jmist.framework.path.EyeNode#sample(ca.eandb.jmist.math.Point2, ca.eandb.jmist.framework.Random)
     */
    public ScatteredRay sample(double ru, double rv, double rj) {
      Point2 p = pointOnImagePlane;
      Vector3 v = new Vector3(
          width * (p.x() - 0.5),
          height * (0.5 - p.y()),
          -1.0);
      Ray3 ray = new Ray3(Point3.ORIGIN, v.unit());
      Color color = getWhite();
      double z = v.x() * v.x() + v.y() * v.y() + 1.0;
      double pdf = z * z / (width * height);

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      Ray3 ray = new Ray3(Point3.ORIGIN, x);
      Vector3 v = ray.direction();
      if (-v.z() < MathUtil.EPSILON) {
        return null;
      }
      Point2 p = new Point2(
          0.5 - v.x() / (width * v.z()),
          0.5 + v.y() / (height * v.z()));
      return Box2.UNIT.contains(p) ? p : null;
    }

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    this.plane = Plane3.throughPoint(this.origin, this.basis.w());


    this.vertices.clear();
    for (int i = 0; i < vertices.length; i++) {
      Vector3 r = this.origin.vectorTo(vertices[i]);
      this.vertices.add(new Point2(r.dot(basis.u()), r.dot(basis.v())));
    }


    for (int i = 0; i < components.length; i++) {
      this.insert(new Component(components[i]), null);
    }

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    int i, count = 0;


    for (i = 0; i < component.indices.length; i++) {
      int    ni = (i < component.indices.length - 1) ? i + 1 : 0;
      Point2  a = this.vertices.get(component.indices[i]);
      Point2  b = this.vertices.get(component.indices[ni]);


      if (this.intersects(p, a, b)) count++;
    }


    if (count % 2 == 0)

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    if (!recorder.interval().contains(t))
      return;


    Point3      p = ray.pointAt(t);
    Vector3      r = p.vectorFrom(this.origin);
    Point2      uv = new Point2(r.dot(basis.u()), r.dot(basis.v()));


    if (!this.inside(uv))
      return;


    Point2      inversion = new Point2(
              (uv.x() - this.bound.minimumX()) / this.bound.lengthX(),
              (uv.y() - this.bound.minimumY()) / this.bound.lengthY()
            );


    Vector3      N = this.plane.normal();

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  private Iterable<Point3> getVertices() {


    List<Point3> vertexList = new ArrayList<Point3>();


    for (int i = 0; i < this.vertices.size(); i++) {
      Point2 p = this.vertices.get(i);
      Point3 vertex = this.pointAt(p);


      vertexList.add(vertex);
    }

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    }


    private double getOuterArea() {
      double area = 0.0;
      for (int i = 0; i < indices.length - 1; i++) {
        Point2 a = vertices.get(indices[i]);
        Point2 b = vertices.get(indices[i + 1]);


        area += a.x() * b.y() - b.x() * a.y();
      }
      area /= 2.0;
      return area;
    }

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