Example usage for java.lang Math PI

Introduction

In this page you can find the example usage for java.lang Math PI.

Prototype

double PI

To view the source code for java.lang Math PI.

Click Source Link

Document

The double value that is closer than any other to pi, the ratio of the circumference of a circle to its diameter.

Usage

From source file:org.jstockchart.axis.TimeseriesDateAxis.java

public List<Tick> refreshTicksHorizontal(Graphics2D g2, Rectangle2D dataArea, RectangleEdge edge) {
    TextAnchor anchor = null;/*  ww  w  .jav  a 2s.c om*/
    TextAnchor rotationAnchor = null;
    double angle = 0.0;
    if (isVerticalTickLabels()) {
        anchor = TextAnchor.CENTER_RIGHT;
        rotationAnchor = TextAnchor.CENTER_RIGHT;
        if (edge == RectangleEdge.TOP) {
            angle = Math.PI / 2.0;
        } else {
            angle = -Math.PI / 2.0;
        }
    } else {
        if (edge == RectangleEdge.TOP) {
            anchor = TextAnchor.BOTTOM_CENTER;
            rotationAnchor = TextAnchor.BOTTOM_CENTER;
        } else {
            anchor = TextAnchor.TOP_CENTER;
            rotationAnchor = TextAnchor.TOP_CENTER;
        }
    }
    return createTicksHorizontal(logicTicks, anchor, rotationAnchor, angle);
}

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From source file:BackEnd.E_Spheres_calculation.java

private FazorVektor calc_DE(Complex Q, DPoint Rp, DPoint R0) throws DelaunayError {

    FazorVektor deltaE = new FazorVektor(new Complex(0, 0), new Complex(0, 0), new Complex(0, 0));
    double K = 1 / (4 * Math.PI * constants.getEpsi0() * constants.getEpsi1()); // kontanta
    double Q_real = Q.getReal();
    double Q_image = Q.getImaginary();

    DPoint R_r = help.substract(Rp, R0); // rozdiel vektorov Rp a RO
    double ABS_R_r = get_ABS(R_r);
    DPoint R_r_unit = new DPoint(R_r);

    R_r_unit.setX(R_r.getX() / ABS_R_r);
    R_r_unit.setY(R_r.getY() / ABS_R_r);
    R_r_unit.setZ(R_r.getZ() / ABS_R_r);

    double menovatel_r = Math.pow(get_ABS(R_r), 2);

    deltaE.setX_Real(K * (((Q_real * R_r_unit.getX()) / menovatel_r)));
    deltaE.setY_Real(K * (((Q_real * R_r_unit.getY()) / menovatel_r)));
    deltaE.setZ_Real(K * (((Q_real * R_r_unit.getZ()) / menovatel_r)));

    deltaE.setX_Imaginary(K * (((Q_image * R_r_unit.getX()) / menovatel_r)));
    deltaE.setY_Imaginary(K * (((Q_image * R_r_unit.getY()) / menovatel_r)));
    deltaE.setZ_Imaginary(K * (((Q_image * R_r_unit.getZ()) / menovatel_r)));

    return deltaE;
}

---

From source file:BackEnd.B_calculation.java

private double getI_image() {
    double I_image = I * Math.sin(phase * (Math.PI / 180));
    return I_image;
}

---

From source file:es.udc.gii.common.eaf.benchmark.multiobjective.wfg.Wfg_Objective.java

protected double concave(double[] x, int m, int M) {
    int i;/* w  w w  .  j  a v  a 2 s .  co m*/
    double result = 1.0;

    for (i = 1; i <= M - m; i++) {
        result *= Math.sin(x[i - 1] * Math.PI / 2.0);
    }

    if (m != 1) {
        result *= Math.cos(x[M - m] * Math.PI / 2.0);
    }

    return correct_to_01(result, EPSILON);
}

---

From source file:org.eevolution.form.CRPDetail.java

/**
 * Create Chart based on UOM/* w w w  .j a  va2 s.c  o m*/
 * 
 * @param dataset
 * @param title
 * @param uom
 * @return JFreeChart Chart based On UOM
 */
public JFreeChart createChart(CategoryDataset dataset, String title, MUOM uom) {

    JFreeChart chart = ChartFactory.createBarChart3D(title, Msg.translate(Env.getCtx(), "Day"), // X-Axis label
            Msg.translate(Env.getCtx(), (uom == null) ? "" : uom.getName()), // Y-Axis
            // label
            dataset, // Dataset
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    chart.setBackgroundPaint(Color.WHITE);
    chart.setAntiAlias(true);
    chart.setBorderVisible(true);

    CategoryPlot plot = chart.getCategoryPlot();
    plot.setRangeGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.GRAY);

    plot.setDomainGridlinesVisible(true);
    plot.setDomainGridlinePaint(Color.GRAY);

    BarRenderer3D barrenderer = (BarRenderer3D) plot.getRenderer();
    barrenderer.setDrawBarOutline(false);
    barrenderer.setBaseItemLabelGenerator(new LabelGenerator());
    barrenderer.setBaseItemLabelsVisible(true);
    barrenderer.setSeriesPaint(0, new Color(10, 80, 150, 128));
    barrenderer.setSeriesPaint(1, new Color(180, 60, 50, 128));

    ItemLabelPosition itemlabelposition = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
            TextAnchor.TOP_CENTER);
    barrenderer.setPositiveItemLabelPosition(itemlabelposition);

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    return chart;
}

---

From source file:de.sanandrew.mods.turretmod.entity.projectile.EntityTurretProjectile.java

private void setHeadingFromVec(Vec3d vector) {
    double scatterVal = getScatterValue();
    float initSpeed = getInitialSpeedMultiplier();

    this.motionX = vector.x * initSpeed + (MiscUtils.RNG.randomDouble() * 2.0D - 1.0D) * scatterVal;
    this.motionZ = vector.z * initSpeed + (MiscUtils.RNG.randomDouble() * 2.0D - 1.0D) * scatterVal;
    this.motionY = vector.y * initSpeed + (MiscUtils.RNG.randomDouble() * 2.0D - 1.0D) * scatterVal;

    float vecPlaneNormal = MathHelper.sqrt(vector.x * vector.x + vector.z * vector.z);

    this.prevRotationYaw = this.rotationYaw = (float) (Math.atan2(vector.x, vector.z) * 180.0D / Math.PI);
    this.prevRotationPitch = this.rotationPitch = (float) (Math.atan2(vector.y, vecPlaneNormal) * 180.0D
            / Math.PI);/*from   w w w.  j  ava2 s .c o m*/
}

---

From source file:HelloUniverse.java

public BranchGroup createSceneGraph() {

    BranchGroup objRoot = new BranchGroup();
    TransformGroup objTrans = new TransformGroup();
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objRoot.addChild(objTrans);// w  w  w. j av  a 2 s  . c o  m
    objTrans.addChild(new ColorCube(0.2));
    Transform3D yAxis = new Transform3D();
    Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 4000, 0, 0, 0, 0, 0);
    RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f,
            (float) Math.PI * 2.0f);
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
    rotator.setSchedulingBounds(bounds);
    objTrans.addChild(rotator);
    return objRoot;
}

---

From source file:embedding.ExampleJava2D2PDF.java

/**
 * Creates a PDF file. The contents are painted using a Graphics2D implementation that
 * generates an PDF file./*  w ww. j av  a  2s.  c  o  m*/
 * @param outputFile the target file
 * @throws IOException In case of an I/O error
 * @throws ConfigurationException if an error occurs configuring the PDF output
 */
public void generatePDF(File outputFile) throws IOException, ConfigurationException {
    OutputStream out = new java.io.FileOutputStream(outputFile);
    out = new java.io.BufferedOutputStream(out);
    try {

        //Instantiate the PDFDocumentGraphics2D instance
        PDFDocumentGraphics2D g2d = new PDFDocumentGraphics2D(false);
        g2d.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());

        //Configure the G2D with the necessary fonts
        configure(g2d, createAutoFontsConfiguration());

        //Set up the document size
        Dimension pageSize = new Dimension((int) Math.ceil(UnitConv.mm2pt(210)),
                (int) Math.ceil(UnitConv.mm2pt(297))); //page size A4 (in pt)
        g2d.setupDocument(out, pageSize.width, pageSize.height);
        g2d.translate(144, 72); //Establish some page borders

        //A few rectangles rotated and with different color
        Graphics2D copy = (Graphics2D) g2d.create();
        int c = 12;
        for (int i = 0; i < c; i++) {
            float f = ((i + 1) / (float) c);
            Color col = new Color(0.0f, 1 - f, 0.0f);
            copy.setColor(col);
            copy.fillRect(70, 90, 50, 50);
            copy.rotate(-2 * Math.PI / c, 70, 90);
        }
        copy.dispose();

        //Some text
        g2d.rotate(-0.25);
        g2d.setColor(Color.RED);
        g2d.setFont(new Font("sans-serif", Font.PLAIN, 36));
        g2d.drawString("Hello world!", 140, 140);
        g2d.setColor(Color.RED.darker());
        g2d.setFont(new Font("serif", Font.PLAIN, 36));
        g2d.drawString("Hello world!", 140, 180);

        pageSize = new Dimension(pageSize.height, pageSize.width);
        g2d.nextPage(pageSize.width, pageSize.height);

        //Demonstrate painting rich text
        String someHTML = "<html><body style=\"font-family:Verdana\">" + "<p>Welcome to <b>page 2!</b></p>"
                + "<h2>PDFDocumentGraphics2D Demonstration</h2>"
                + "<p>We can <i>easily</i> paint some HTML here!</p>" + "<p style=\"color:green;\">"
                + "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin accumsan"
                + " condimentum ullamcorper. Sed varius quam id arcu fermentum luctus. Praesent"
                + " nisi ligula, cursus sed vestibulum vel, sodales sed lectus.</p>" + "</body></html>";
        JEditorPane htmlComp = new JEditorPane();
        htmlComp.setContentType("text/html");
        htmlComp.read(new StringReader(someHTML), null);
        htmlComp.setSize(new Dimension(pageSize.width - 72, pageSize.height - 72));
        //htmlComp.setBackground(Color.ORANGE);
        htmlComp.validate();
        htmlComp.printAll(g2d);

        //Cleanup
        g2d.finish();
    } finally {
        IOUtils.closeQuietly(out);
    }
}

---

From source file:ObjLoad.java

public BranchGroup createSceneGraph() {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();

    // Create a Transformgroup to scale all objects so they
    // appear in the scene.
    TransformGroup objScale = new TransformGroup();
    Transform3D t3d = new Transform3D();
    t3d.setScale(0.7);/* w  w w.j a  v  a 2 s. c  om*/
    objScale.setTransform(t3d);
    objRoot.addChild(objScale);

    // Create the transform group node and initialize it to the
    // identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime. Add it to the
    // root of the subgraph.
    TransformGroup objTrans = new TransformGroup();
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objScale.addChild(objTrans);

    int flags = ObjectFile.RESIZE;
    if (!noTriangulate)
        flags |= ObjectFile.TRIANGULATE;
    if (!noStripify)
        flags |= ObjectFile.STRIPIFY;
    ObjectFile f = new ObjectFile(flags, (float) (creaseAngle * Math.PI / 180.0));
    Scene s = null;
    try {
        s = f.load(filename);
    } catch (FileNotFoundException e) {
        System.err.println(e);
        System.exit(1);
    } catch (ParsingErrorException e) {
        System.err.println(e);
        System.exit(1);
    } catch (IncorrectFormatException e) {
        System.err.println(e);
        System.exit(1);
    }

    objTrans.addChild(s.getSceneGroup());

    bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);

    if (spin) {
        Transform3D yAxis = new Transform3D();
        Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 4000, 0, 0, 0, 0, 0);

        RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f,
                (float) Math.PI * 2.0f);
        rotator.setSchedulingBounds(bounds);
        objTrans.addChild(rotator);
    }

    // Set up the background
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
    Background bgNode = new Background(bgColor);
    bgNode.setApplicationBounds(bounds);
    objRoot.addChild(bgNode);

    return objRoot;
}

---

From source file:ConfigObjLoad.java

public BranchGroup createSceneGraph() {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();

    // Create a Transformgroup to scale all objects so they
    // appear in the scene.
    TransformGroup objScale = new TransformGroup();
    Transform3D t3d = new Transform3D();
    t3d.setScale(0.7);//from ww  w. ja  v a  2s. c  o  m
    objScale.setTransform(t3d);
    objRoot.addChild(objScale);

    // Create the transform group node and initialize it to the
    // identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime. Add it to the
    // root of the subgraph.
    TransformGroup objTrans = new TransformGroup();
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objScale.addChild(objTrans);

    int flags = ObjectFile.RESIZE;
    if (!noTriangulate)
        flags |= ObjectFile.TRIANGULATE;
    if (!noStripify)
        flags |= ObjectFile.STRIPIFY;
    ObjectFile f = new ObjectFile(flags, (float) (creaseAngle * Math.PI / 180.0));
    Scene s = null;
    try {
        s = f.load(filename);
    } catch (FileNotFoundException e) {
        System.err.println(e);
        System.exit(1);
    } catch (ParsingErrorException e) {
        System.err.println(e);
        System.exit(1);
    } catch (IncorrectFormatException e) {
        System.err.println(e);
        System.exit(1);
    }

    objTrans.addChild(s.getSceneGroup());

    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);

    if (spin) {
        Transform3D yAxis = new Transform3D();
        Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 4000, 0, 0, 0, 0, 0);

        RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f,
                (float) Math.PI * 2.0f);
        rotator.setSchedulingBounds(bounds);
        objTrans.addChild(rotator);
    }

    // Set up the background
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
    Background bgNode = new Background(bgColor);
    bgNode.setApplicationBounds(bounds);
    objRoot.addChild(bgNode);

    // Set up the ambient light
    Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
    AmbientLight ambientLightNode = new AmbientLight(ambientColor);
    ambientLightNode.setInfluencingBounds(bounds);
    objRoot.addChild(ambientLightNode);

    // Set up the directional lights
    Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
    Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f);
    Color3f light2Color = new Color3f(1.0f, 1.0f, 1.0f);
    Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f);

    DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction);
    light1.setInfluencingBounds(bounds);
    objRoot.addChild(light1);

    DirectionalLight light2 = new DirectionalLight(light2Color, light2Direction);
    light2.setInfluencingBounds(bounds);
    objRoot.addChild(light2);

    return objRoot;
}

---

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