Example usage for org.apache.commons.math.complex Complex NaN

Introduction

In this page you can find the example usage for org.apache.commons.math.complex Complex NaN.

Prototype

Complex NaN

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Document

A complex number representing "NaN + NaNi"

Usage

From source file:geogebra.io.MyI2GHandler.java

private void startElements(String eName, LinkedHashMap attrs) {
    debug("startElements", eName);
    switch (subMode) {
    case MODE_INVALID:
        // TODO -> extend to further objects
        if (!eName.equals("line") && !eName.equals("line_segment") && !eName.equals("point")) {
            Application.debug("unknown tag in <elements>: " + eName);
            break;
        }/* w ww .  jav a2s  . c  om*/

        String label = (String) attrs.get("id");
        if (label == null) {
            Application.debug("attribute id missing in <" + eName + ">");
            break;
        }

        // does a geo element with this label exist?
        geo = kernel.lookupLabel(label);
        if (geo != null) {
            geo = null;
            Application.debug("an element with id \"" + label + "\" already exists");
            break;
        }

        if (eName.equals("line_segment")) {
            eName = "segment";
            segment = true;
            segmentStart = new GeoPoint(cons);
            segmentEnd = new GeoPoint(cons);
            segmentVia = new GeoPoint(cons);
        } else {
            segment = false;
        }

        geo = kernel.createGeoElement(cons, eName);
        geo.setLoadedLabel(label);
        subMode = MODE_ELEMENTS;
        cmdName = eName;
        break;

    case MODE_ELEMENTS:
        String[] tags;
        if (cmdName.equals("point")) {
            tags = new String[] { "homogeneous_coordinates", "euclidean_coordinates", "polar_coordinates" };
        } else {
            tags = new String[] { "homogeneous_coordinates" };
        }
        int i;
        for (i = 0; i < tags.length; i++) {
            if (eName.equals(tags[i])) {
                break;
            }
        }
        if (i >= tags.length) {
            Application.debug("unknown tag in <" + geo.getI2GtypeString() + ">: " + eName);
            break;
        } else if (!(geo instanceof GeoVec3D)) {
            Application.debug("wrong element type for coordinates: " + geo.getI2GtypeString());
            break;
        }

        if (eName.equals("homogeneous_coordinates")) {
            coord = 0;
            coords = new Complex[] { Complex.NaN, Complex.NaN, Complex.NaN };
        } else if (eName.equals("euclidean_coordinates") || eName.equals("polar_coordinates")) {
            coord = 0;
            coords = new Complex[] { Complex.NaN, Complex.NaN };
        }
        subMode = MODE_COORDINATES;
        cmdName = eName;
        break;

    case MODE_COORDINATES:
        if (eName.equals("double")) {
            subMode = MODE_COORDINATES_REAL_DOUBLE;
        } else if (cmdName.equals("homogeneous_coordinates") && eName.equals("complex")) {
            subMode = MODE_COORDINATES_COMPLEX;
        } else {
            Application.debug("unknown tag in <" + cmdName + ">: " + eName);
            break;
        }
        if (coord >= coords.length) {
            break;
        }
        for (coord = 0; coord < coords.length; coord++) {
            if (coords[coord].isNaN()) {
                break;
            }
        }
        if (coord >= coords.length) {
            String tag = "<double>";
            if (cmdName.equals("homogeneous_coordinates")) {
                tag = "<double> or <complex>";
            }
            Application.debug("more than " + coords.length + " " + tag + " specified for <" + cmdName + ">");
        }
        break;

    case MODE_COORDINATES_COMPLEX:
        if (eName.equals("double")) {
            subMode = MODE_COORDINATES_COMPLEX_DOUBLE;
        } else {
            Application.debug("unknown tag in <complex>: " + eName);
        }
        break;

    case MODE_COORDINATES_REAL_DOUBLE:
    case MODE_COORDINATES_COMPLEX_DOUBLE:
        Application.debug("unknown tag in <double>: " + eName);
        break;
    }
}

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