Examples of org.kabeja.dxf.helpers.Vector

@author


        // the half of width and height
        double modelH = (this.height / this.getZoomXPFactor()) / 2;
        double modelW = (f * modelH);
        //double wf = modelW / modelH;
        Vector directionX = null;


        if ((this.viewDirectionVector.getX() == 0.0) &&
                (this.viewDirectionVector.getY() == 0.0) &&
                (this.viewDirectionVector.getZ() == 1.0)) {
            directionX = new Vector(1, 0, 0);
        } else {
            directionX = MathUtils.crossProduct(DXFConstants.DEFAULT_Z_AXIS_VECTOR,
                    this.viewDirectionVector);
        }

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            double start = this.startParameter;
            //double major = this.getHalfMajorAxisLength();
            //double minor = major * this.ratio;


            Vector minorAxis = MathUtils.crossProduct(this.getExtrusion()
                                                          .getNormal(),
                    this.getMajorAxisDirection());
            minorAxis = MathUtils.scaleVector(minorAxis, this.ratio);


            for (int i = 0; i <= n; i++) {
                Vector v1 = MathUtils.scaleVector(this.getMajorAxisDirection(),
                        Math.cos(start));
                Vector v2 = MathUtils.scaleVector(minorAxis, Math.sin(start));


                //        double x = major * Math.cos(start);
                //        double y = minor * Math.sin(start);
                double x = v1.getX() + v2.getX();
                double y = v1.getY() + v2.getY();


                //        if (alpha != 0.0) {
                //          double lx = x;
                //          x = lx * Math.cos(alpha) - y * Math.sin(alpha);
                //          y = lx * Math.sin(alpha) + y * Math.cos(alpha);

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    public Point getPointAt(double para) {
        ParametricPlane plane = new ParametricPlane(this.center,
                this.getExtrusion().getDirectionX(),
                this.getExtrusion().getDirectionY(),
                this.getExtrusion().getNormal());
        Vector minorAxis = MathUtils.crossProduct(this.getExtrusion().getNormal(),
                this.getMajorAxisDirection());
        minorAxis = MathUtils.scaleVector(minorAxis, this.ratio);


        Vector v1 = MathUtils.scaleVector(this.getMajorAxisDirection(),
                Math.cos(para));
        Vector v2 = MathUtils.scaleVector(minorAxis, Math.sin(para));
        double x = v1.getX() + v2.getX();
        double y = v1.getY() + v2.getY();
        Point p = plane.getPoint(x, y);


        return p;
    }

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     * @param a
     * @param b
     * @return a new vector as result of the cross product of a and b
     */
    public static Vector crossProduct(Vector a, Vector b) {
        Vector r = new Vector();
        r.setX((a.getY() * b.getZ()) - (a.getZ() * b.getY()));
        r.setY((a.getZ() * b.getX()) - (a.getX() * b.getZ()));
        r.setZ((a.getX() * b.getY()) - (a.getY() * b.getX()));


        return r;
    }

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     * @param scale
     *            the value to scale
     * @return a new vector scaled with the given
     */
    public static Vector scaleVector(Vector a, double scale) {
        Vector v = new Vector();


        v.setX(a.getX() * scale);
        v.setY(a.getY() * scale);
        v.setZ(a.getZ() * scale);


        return v;
    }

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     */
    public static Point getPointOfStraightLine(Point a, Vector direction,
        double parameter) {
        // p = a + v*scale
        Point p = new Point();
        Vector v = scaleVector(direction, parameter);


        p.setX(a.getX() + v.getX());
        p.setY(a.getY() + v.getY());
        p.setZ(a.getZ() + v.getZ());


        return p;
    }

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     * @param a
     * @param b
     * @return the vector from a to b
     */
    public static Vector getVector(Point a, Point b) {
        Vector v = new Vector();


        v.setX(b.getX() - a.getX());
        v.setY(b.getY() - a.getY());
        v.setZ(b.getZ() - a.getZ());


        return v;
    }

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    }


    public static Point getIntersection(Point a, Vector u, Point b, Vector v) {
        //u = normalize(u);
        //v = normalize(v);
        Vector n = crossProduct(u, v);
        Vector m = crossProduct(getVector(a, b), v);
        double s = 0;


        if (n.getZ() != 0.0) {
            s = m.getZ() / n.getZ();
        } else if (n.getY() != 0.0) {
            s = m.getY() / n.getY();
        } else if (n.getX() != 0.0) {
            s = m.getX() / n.getX();
        }


        Point p = getPointOfStraightLine(a, u, s);


        return p;

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     * @param a the minuend
     * @param b the subtrahend
     * @return the difference as vector
     */
    public static Vector subtractVectorByVector(Vector a, Vector b) {
        Vector result = new Vector();
        result.setX(a.getX() - b.getX());
        result.setY(a.getY() - b.getY());
        result.setZ(a.getZ() - b.getZ());


        return result;
    }

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        return result;
    }


    public static Vector addVectorToVector(Vector a, Vector b) {
        Vector result = new Vector();
        result.setX(a.getX() + b.getX());
        result.setY(a.getY() + b.getY());
        result.setZ(a.getZ() + b.getZ());


        return result;
    }

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Examples of org.kabeja.dxf.helpers.Vector

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