Examples with Circle ca.nrc.cadc.caom2.types.Circle used on opensource projects

Example 1 with Circle

use of ca.nrc.cadc.caom2.types.Circle in project caom2db by opencadc.

the class PostgreSQLGenerator method safeSetShape.

/**
 * Store list of points value in a double[] column.
 *
 * @param sb
 * @param ps
 * @param col
 * @param val
 * @throws SQLException
 */
@Override
protected void safeSetShape(StringBuilder sb, PreparedStatement ps, int col, Shape val) throws SQLException {
    if (val == null) {
        ps.setObject(col, null);
        if (sb != null) {
            sb.append("null,");
        }
        return;
    }
    log.debug("[safeSetShape] in: " + val);
    if (val instanceof Polygon) {
        Polygon poly = (Polygon) val;
        // 2 numbers per point
        Double[] dval = new Double[2 * poly.getPoints().size()];
        int i = 0;
        for (Point p : ((Polygon) val).getPoints()) {
            dval[i++] = p.cval1;
            dval[i++] = p.cval2;
        }
        java.sql.Array arr = ps.getConnection().createArrayOf("float8", dval);
        ps.setObject(col, arr);
        if (sb != null) {
            sb.append("[");
            for (double d : dval) {
                sb.append(d).append(",");
            }
            // replace last comma with closing ]
            sb.setCharAt(sb.length() - 1, ']');
        }
        return;
    }
    if (val instanceof Circle) {
        Circle circ = (Circle) val;
        Double[] dval = new Double[3];
        dval[0] = val.getCenter().cval1;
        dval[1] = val.getCenter().cval2;
        dval[2] = circ.getRadius();
        java.sql.Array arr = ps.getConnection().createArrayOf("float8", dval);
        ps.setObject(col, arr);
        if (sb != null) {
            sb.append("[");
            for (double d : dval) {
                sb.append(d).append(",");
            }
            // replace last comma with closing ]
            sb.setCharAt(sb.length() - 1, ']');
        }
    }
}

Example 2 with Circle

use of ca.nrc.cadc.caom2.types.Circle in project caom2db by opencadc.

the class PostgreSQLGenerator method getCircle.

@Override
protected Circle getCircle(ResultSet rs, int col) throws SQLException {
    double[] coords = Util.getDoubleArray(rs, col);
    if (coords == null) {
        return null;
    }
    if (coords.length == 3) {
        double cval1 = coords[0];
        double cval2 = coords[1];
        double rad = coords[2];
        Circle ret = new Circle(new Point(cval1, cval2), rad);
        log.debug("[getCircle] " + ret);
        return ret;
    }
    throw new IllegalStateException("array length " + coords.length + " invalid for Circle");
}

Example 3 with Circle

use of ca.nrc.cadc.caom2.types.Circle in project caom2db by opencadc.

the class PostgreSQLGenerator method generatePolygonApproximation.

ca.nrc.cadc.dali.Polygon generatePolygonApproximation(Circle val, int numVerts) {
    if (numVerts < 4) {
        throw new IllegalArgumentException("number of vertices in approximation too small (min: 4)");
    }
    CartesianTransform trans = CartesianTransform.getTransform(val);
    Point cen = trans.transform(val.getCenter());
    double phi = 2.0 * Math.PI / ((double) numVerts);
    // compute distance to vertices so that the edges are tangent and circle is
    // inside the polygon
    double vdist = val.getRadius() / Math.cos(phi / 2.0);
    // log.info("phi = " + phi + " vdist=" + vdist);
    CartesianTransform inv = trans.getInverseTransform();
    ca.nrc.cadc.dali.Polygon ret = new ca.nrc.cadc.dali.Polygon();
    for (int i = 0; i < numVerts; i++) {
        double x = cen.cval1 + vdist * Math.cos(i * phi);
        double y = cen.cval2 + vdist * Math.sin(i * phi);
        Point p = new Point(x, y);
        p = inv.transform(p);
        ret.getVertices().add(new ca.nrc.cadc.dali.Point(p.cval1, p.cval2));
    }
    return ret;
}

Example 4 with Circle

use of ca.nrc.cadc.caom2.types.Circle in project caom2db by opencadc.

the class PostgreSQLGenerator method safeSetShapeAsPolygon.

/**
 * Store polygon value in an spoly column.
 *
 * @param sb
 * @param ps
 * @param col
 * @param val
 * @throws SQLException
 */
@Override
protected void safeSetShapeAsPolygon(StringBuilder sb, PreparedStatement ps, int col, Shape val) throws SQLException {
    if (val == null) {
        ps.setObject(col, null);
        if (sb != null) {
            sb.append("null,");
        }
        return;
    }
    log.debug("[safeSetShapeAsPolygon] in: " + val);
    if (val instanceof Polygon) {
        Polygon vp = (Polygon) val;
        ca.nrc.cadc.dali.Polygon poly = new ca.nrc.cadc.dali.Polygon();
        for (Point p : vp.getPoints()) {
            poly.getVertices().add(new ca.nrc.cadc.dali.Point(p.cval1, p.cval2));
        }
        PgSpoly pgs = new PgSpoly();
        PGobject pgo = pgs.generatePolygon(poly);
        ps.setObject(col, pgo);
        if (sb != null) {
            sb.append(pgo.getValue());
            sb.append(",");
        }
        return;
    }
    if (val instanceof Circle) {
        Circle cv = (Circle) val;
        ca.nrc.cadc.dali.Polygon poly = generatePolygonApproximation(cv, 13);
        PgSpoly pgs = new PgSpoly();
        PGobject pgo = pgs.generatePolygon(poly);
        ps.setObject(col, pgo);
        if (sb != null) {
            sb.append(pgo.getValue());
            sb.append(",");
        }
    }
}

Example 5 with Circle

use of ca.nrc.cadc.caom2.types.Circle in project caom2db by opencadc.

the class PostgreSQLGeneratorTest method testCircleToPolygonApproximatiom.

@Test
public void testCircleToPolygonApproximatiom() {
    try {
        Circle c = new Circle(new Point(12.0, 34.0), 1.0);
        double ca = c.getArea();
        double cs = c.getSize();
        for (int i = 4; i < 32; i += 2) {
            ca.nrc.cadc.dali.Polygon dpoly = gen.generatePolygonApproximation(c, i);
            List<Vertex> verts = new ArrayList<Vertex>();
            List<Point> points = new ArrayList<Point>();
            SegmentType t = SegmentType.MOVE;
            for (ca.nrc.cadc.dali.Point dp : dpoly.getVertices()) {
                points.add(new Point(dp.getLongitude(), dp.getLatitude()));
                verts.add(new Vertex(dp.getLongitude(), dp.getLatitude(), t));
                t = SegmentType.LINE;
            }
            verts.add(Vertex.CLOSE);
            MultiPolygon mp = new MultiPolygon(verts);
            Polygon poly = new Polygon(points, mp);
            double pa = poly.getArea();
            double ps = poly.getSize();
            double da = pa / ca;
            log.info("n=" + i + " poly: " + ps + " " + pa + " (" + da + ")");
        }
        log.info("circle: " + ca + " " + cs);
    } catch (Exception unexpected) {
        log.error("unexpected exception", unexpected);
        Assert.fail("unexpected exception: " + unexpected);
    }
}