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:Main.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToShear(Math.PI / 6, Math.PI / 6);

    g2.setTransform(at);//from   ww  w  . j  a v a2 s  .  c  om
    g2.draw(shape);

}

From source file:Main.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToRotation(Math.PI / 6, Math.PI / 6);
    at.translate(100, 0);//  ww  w . j av a 2  s .  com

    g2.setTransform(at);
    g2.draw(shape);

}

From source file:Main.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToTranslation(Math.PI / 6, Math.PI / 6);

    g2.setTransform(at);/*from   ww w  .  jav  a  2 s  . c o m*/
    g2.draw(shape);

}

From source file:Draw2DRotate.java

public void paint(Graphics graphics) {
    Graphics2D g = (Graphics2D) graphics;
    AffineTransform transform = AffineTransform.getRotateInstance(Math.PI / 16.0d);
    g.setTransform(transform);/*from  www .  j  a va 2s. c o m*/
    Line2D.Double shape = new Line2D.Double(0.0, 0.0, 300.0, 300.0);
    g.draw(shape);
    g.setFont(new Font("Helvetica", Font.BOLD, 24));
    String text = ("Java2s");
    g.drawString(text, 300, 50);
    Toolkit toolkit = Toolkit.getDefaultToolkit();
    Image image = toolkit.getImage("image1.gif");
    g.drawImage(image, 100, 150, this);
}

From source file:MainClass.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToRotation(Math.PI / 6);
    at.translate(100, 0);//w  w w. j a v a  2s.co m

    g2.setTransform(at);
    g2.draw(shape);

}

From source file:Main.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToRotation(0.2, Math.PI / 6, Math.PI / 6);
    at.translate(100, 0);//from   w  w  w .jav a  2s  .co m

    g2.setTransform(at);
    g2.draw(shape);

}

From source file:Main.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    AffineTransform at = new AffineTransform();
    at.setToRotation(0.2, 0.2, Math.PI / 6, Math.PI / 6);
    at.translate(100, 0);//from  w w  w.  j  av a2  s.co m

    g2.setTransform(at);
    g2.draw(shape);

}

From source file:MainClass.java

public void paint(Graphics g) {
    Shape shape = new Rectangle2D.Float(100, 50, 80, 80);

    Graphics2D g2 = (Graphics2D) g;

    float cm = 72 / 2.54f;
    AffineTransform at = AffineTransform.getRotateInstance(-Math.PI / 6, 3 * cm, 2 * cm);

    g2.setTransform(at);//from  w  ww  .  j  a  v  a 2s  . c o m
    g2.draw(shape);

}

From source file:Main.java

static double distanceFromPointOnArc(double dA, double dB, double dAB) {
    // In spherical trinagle ABC
    // a is length of arc BC, that is dB
    // b is length of arc AC, that is dA
    // c is length of arc AB, that is dAB
    // We rename parameters so following formulas are more clear:
    double a = dB;
    double b = dA;
    double c = dAB;

    // First, we calculate angles alpha and beta in spherical triangle ABC
    // and based on them we decide how to calculate the distance:
    if (Math.sin(b) * Math.sin(c) == 0.0 || Math.sin(c) * Math.sin(a) == 0.0) {
        // It probably means that one of distance is n*pi, which gives around 20000km for n = 1,
        // unlikely for Denmark, so we should be fine.
        return -1.0;
    }/*from   w  w w  .  java  2 s. c o  m*/

    double alpha = Math.acos((Math.cos(a) - Math.cos(b) * Math.cos(c)) / (Math.sin(b) * Math.sin(c)));
    double beta = Math.acos((Math.cos(b) - Math.cos(c) * Math.cos(a)) / (Math.sin(c) * Math.sin(a)));

    // It is possible that both sinuses are too small so we can get nan when dividing with them
    if (Double.isNaN(alpha) || Double.isNaN(beta)) {
        return -1.0;
    }

    // If alpha or beta are zero or pi, it means that C is on the same circle as arc AB,
    // we just need to figure out if it is between AB:
    if (alpha == 0.0 || beta == 0.0) {
        return (dA + dB > dAB) ? Math.min(dA, dB) : 0.0;
    }

    // If alpha is obtuse and beta is acute angle, then
    // distance is equal to dA:
    if (alpha > Math.PI / 2 && beta < Math.PI / 2)
        return -1;

    // Analogously, if beta is obtuse and alpha is acute angle, then
    // distance is equal to dB:
    if (beta > Math.PI / 2 && alpha < Math.PI / 2)
        return -1;

    // Again, unlikely, since it would render at least pi/2*EARTH_RADIUS_IN_METERS, which is too much.
    if (Math.cos(a) == 0.0)
        return -1;

    double x = Math.atan(-1.0 / Math.tan(c) + (Math.cos(b) / (Math.cos(a) * Math.sin(c))));

    return x;
}

From source file:Reportes.ChartCustomizer.java

@Override
public void customize(JFreeChart chart, ReportParameters reportParameters) {
    CategoryAxis domainAxis = chart.getCategoryPlot().getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 2));
}