Pythagoras calculation

I have a .vi I am trying to write in Labview for a project that really has me stuck. Basically what I want to be able
to do is calculate distance using pythagoras, given a user selected number of dimensions (up to 20). That means rather
than traditionally just calculating pythagoras using x and y, I now have x, y, z, .... etc.
Currently I am at the stage where I can send an array of integers, where each represents which dimension to use
in calculation. eg 1 is x, 2 is y, 3 is z ... etc.
What I have done is a .vi for just x and y, which I have attatched but as for expanding this for z, alpha, beta,
gamma, delta etc I draw a blank. Any clues?
Solved!
Go to Solution.
Attachments:
Pythagoras.vi ‏9 KB

LabVIEW will do primitive operations on arrays. For example, if you connect two one-dimensional arrays into the add primitive, it will return an array that contains and element by element addition of the inputs. This makes your problem fairly easy. Instead of indexing individual points, index the entire location vectors of the two points you want to know the distance between. Subtract one from the other to get the differences. Square the resultant vector. Use the Array Sum to sum it, then take the square root. This approach will scale with however many dimensions you want.
Good luck!
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double dy = ((double)y[last] -
le)y[last] - y[next])/2;
Point2D oppLineCenter = new
Center = new Point2D.Double(x[next] + dx,
y[next]
y[next] + dy);
medians[j] = new Line2D.Double(vertex,
uble(vertex, oppLineCenter);
// centroid is located on any median 2/3 the
2/3 the way from the
// vertex (P1) to the midpoint (P2) on the
) on the opposite side
double[] lengths = getSideLengths();
double dx = (medians[0].getX2() -
etX2() - medians[0].getX1())*2/3;
double dy = (medians[0].getY2() -
etY2() - medians[0].getY1())*2/3;
double px = medians[0].getX1() + dx;
double py = medians[0].getY1() + dy;
//System.out.println("px = " + nf.format(px)
rmat(px) +
// "\tpy = " +
py = " + nf.format(py));
centroid = new Point2D.Double(px, py);
return "(" + nf.format(px) + ", " +
", " + nf.format(py) + ")";
public String[] getAngles()
double[] lengths = getSideLengths();
String[] vertices = new
es = new String[lengths.length];
for(int j = 0; j < lengths.length; j++)
int opp = (j + 1) % lengths.length;
int last = (j + 2) % lengths.length;
double top = lengths[j] * lengths[j] +
lengths[last] *
lengths[last] * lengths[last] -
lengths[opp] *
lengths[opp] * lengths[opp];
double divisor = 2 * lengths[j] *
lengths[j] * lengths[last];
double vertex = Math.acos(top /
h.acos(top / divisor);
vertices[j] =
ertices[j] = nf.format(Math.toDegrees(vertex));
return vertices;
public String[] getLengths()
double[] lengths = getSideLengths();
String[] lengthStrs = new
rs = new String[lengths.length];
for(int j = 0; j < lengthStrs.length; j++)
lengthStrs[j] = nf.format(lengths[j]);
return lengthStrs;
public String[] getSquares()
double[] lengths = getSideLengths();
String[] squareStrs = new
rs = new String[lengths.length];
for(int j = 0; j < squareStrs.length; j++)
squareStrs[j] = nf.format(lengths[j] *
lengths[j] * lengths[j]);
return squareStrs;
private double[] getSideLengths()
int[] x = triangle.xpoints;
int[] y = triangle.ypoints;
double[] lengths = new double[SIDES];
for(int j = 0; j < SIDES; j++)
int next = (j + 1) % SIDES;
lengths[j] = Point.distance(x[j], y[j],
(x[j], y[j], x[next], y[next]);
return lengths;
class TriangleView extends JPanel
private TriangleModel model;
private Polygon triangle;
private JTable table;
private JLabel centroidLabel;
private boolean showConstruction;
TriangleControl control;
public TriangleView(TriangleModel model)
this.model = model;
triangle = model.getTriangle();
showConstruction = false;
control = new TriangleControl(this);
addMouseListener(control);
addMouseMotionListener(control);
public void paintComponent(Graphics g)
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.draw(triangle);
if(model.medians == null)
centroidLabel.setText("centroid location:
id location: " + model.findCentroid());
// draw medians and centroid point
if(showConstruction && !control.dragging)
g2.setPaint(Color.red);
for(int j = 0; j < 3; j++)
g2.draw(model.medians[j]);
g2.setPaint(Color.blue);
g2.fill(new
g2.fill(new Ellipse2D.Double(model.centroid.getX() -
2,
model.centroid.getY()
model.centroid.getY() - 2, 4, 4));
public TriangleModel getModel()
return model;
public JTable getTable()
return table;
public JLabel getCentroidLabel()
return centroidLabel;
public JPanel getUIPanel()
JCheckBox showCon = new JCheckBox("show
ox("show construction");
showCon.addActionListener(new
ener(new ActionListener()
public void actionPerformed(ActionEvent
(ActionEvent e)
boolean state =
boolean state =
((JCheckBox)e.getSource()).isSelected();
showConstruction = state;
repaint();
JPanel panel = new JPanel();
panel.add(showCon);
return panel;
public JPanel getTablePanel()
String[] headers = new String[] { "", "", "",
// row and column data labels
String[] rowHeaders = {
"sides", "lengths", "squares", "angles",
", "angles", "degrees"
String[] sidesRow = { "vertical",
rtical", "horizontal", "hypotenuse" };
String[] anglesRow = { "hyp to ver", "ver to
"ver to hor", "hor to hyp" };
// collect data from model
String[] angles = model.getAngles();
String[] lengths = model.getLengths();
String[] squares = model.getSquares();
String[][] allData = { sidesRow, lengths,
lengths, squares, anglesRow, angles };
int rows = 5;
int cols = 4;
Object[][] data = new Object[rows][cols];
for(int row = 0; row < rows; row++)
data[row][0] = rowHeaders[row];
for(int col = 1; col < cols; col++)
data[row][col] = allData[row][col -
lData[row][col - 1];
table = new JTable(data, headers)
public boolean isCellEditable(int row,
ble(int row, int col)
return false;
DefaultTableCellRenderer renderer =
(DefaultTableCellRenderer)table.getDefaultRenderer(St
ring.class);
renderer.setHorizontalAlignment(JLabel.CENTER);
centroidLabel = new JLabel("centroid
centroid location: ", JLabel.CENTER);
Dimension d =
sion d = centroidLabel.getPreferredSize();
d.height = table.getRowHeight();
centroidLabel.setPreferredSize(d);
JPanel panel = new JPanel(new
anel(new BorderLayout());
panel.setBorder(BorderFactory.createTitledBorder("tri
angle data"));
panel.add(table);
panel.add(centroidLabel, "South");
return panel;
class TriangleControl extends MouseInputAdapter
TriangleView view;
TriangleModel model;
Point start;
boolean dragging, altering;
Rectangle lineLens; // used for line
line selection
public TriangleControl(TriangleView tv)
view = tv;
model = view.getModel();
dragging = altering = false;
lineLens = new Rectangle(0, 0, 6, 6);
public void mousePressed(MouseEvent e)
Point p = e.getPoint();
lineLens.setLocation(p.x - 3, p.y - 3);
// are we over a line
if(model.isLineSelected(lineLens))
start = p;
altering = true;
// or are we within the triangle
else if(model.contains(p))
start = p;
dragging = true;
public void mouseReleased(MouseEvent e)
altering = false;
dragging = false;
view.getCentroidLabel().setText("centroid
centroid location: " +
model.findCentroid());
view.repaint(); // for the construction
truction lines
public void mouseDragged(MouseEvent e)
Point p = e.getPoint();
if(altering)
int x = p.x - start.x;
int y = p.y - start.y;
model.moveSide(x, y, p);
updateTable();
view.repaint();
start = p;
else if(dragging)
int x = p.x - start.x;
int y = p.y - start.y;
model.translate(x, y);
view.repaint();
start = p;
private void updateTable()
String[] lengths = model.getLengths();
String[] squares = model.getSquares();
String[] angles = model.getAngles();
JTable table = view.getTable();
for(int j = 0; j < angles.length; j++)
table.setValueAt(lengths[j], 1, j + 1);
table.setValueAt(squares[j], 2, j + 1);
table.setValueAt(angles[j], 4, j + 1);
view.getCentroidLabel().setText("centroid
centroid location: " +
model.findCentroid());
Hey sorry mate.. ive got a nother problem.
I need to add loads of theorems to this tool. so i need a JMenu Bar called File with all the normal things. then another Menu called Theorems where i can have a list of JMenuItems with the theorem names --- Like when they click on Pythagoras Theorem it opens up all the triangle and the traingle data that u helped me with.
The thing is im using netbeans and in netbeans i can do it coz its there and all you got to do is put the components together.
Please Help
Thanks...
Sharan

Need help to develop Pythagoras theorem-

Hi i need help to develop proofs 2,3,4
of pythagoras theorems in java as demonstrations
These are applets can anyone help me with it or give me an idea of how to go about developing it -
the site is the following
http://www.uni-koeln.de/ew-fak/Mathe/Projekte/VisuPro/pythagoras/pythagoras.html
then double click on the screen to make it start

Pardon my ASCII art, but I've always liked the following, simple, geometric proof:
     a                   b
---------------------------------------+
|       |                                |
a|   I   |              II                |
|       |                                |
---------------------------------------+
|       |                                |
|       |                                |
|       |                                |
|       |                                |
|       |                                |
b| IV   |              III               |
|       |                                |
|       |                                |
|       |                                |
|       |                                |
|       |                                |
|       |                                |
---------------------------------------+It almost goes without saying that I+II+III+IV == (a+b)^2, and II == IV == a*b,
I == a*a and III == b*b, showing that (a+b)^2 == a^2+a*b+a*b+b^2.
I hope the following sketch makes sense, stand back, ASCII art alert again:     a                   b
---------------------------------------+
|               .             VI         |
|     .                 .                |a
| V                               .      |
|                                        +
|                                        |
|   .                                    |
b|                                     . |
|                                        |
|                  IX                    |
| .                                      |
|                                    .   |b
|                                        |
+                                        |
|      .                                 |
a|               .                  . VII |
| VIII                   .              |
---------------------------------------+
                 a                    bThe total area equals (a+b)^2 again and equals the sum of the smaller areas:
(a+b)^2 == V+VI+VII+VIII+IX. Let area IX be c^2 for whatever c may be.
V+VII == VI+VIII == a*b, so a^2+b^2+2*ab= c^2+2*a*b; IOW a^2+b^2 == c^2
Given this fundamental result, the others can easily be derived from this one,
or did I answer a question you didn't ask?
kind regards,
Jos

PYTHAGORAS THEOREM __ URGENT HELP NEEDED

Hi everyone - I am developing various proofs of the pythagora's theorem
and the following code draws a triangle on screen and the proof follows -
but i need to know how to drag the triangle such tht 1 angle is always set to 90 degrees.
i.e. i need to resize the triangle by dragging its vertex points by which the1 angle remains at 90 no matter what the size.
The proof has got some graphics code hardcoded in it - i.e. LINES AND POLYGONS have been hardcoded
i need to reconfigure that such that everytime the user increases the size of the triagnle and clicks on next it draws the lines and polygons in the correct area and place
PLEASE HELP
the code is as follows
MAIN CLASS
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.*;
public class TestProof {
    TestControl control;          // the controls for the visual proof
    TestView view;          // the drawing area to display proof
    // called upon class creation
    public TestProof() {
        view = new TestView();
view.setBackground(Color.WHITE);
        control = new TestControl(view);
        Frame f = new Frame("Pythagoras");
        f.add(view,"Center");
        f.add(control,"South");
        f.setSize(600,600);
        f.setBackground(Color.lightGray);
        f.addMouseMotionListener(
        new MouseMotionListener() { //anonymous inner class
            //handle mouse drag event
            public void mouseMoved(MouseEvent e) {
                System.out.println("Mouse " + e.getX() +"," + e.getY());
            public void mouseDragged(MouseEvent e) {
                System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
        JMenu File = new JMenu("File");
        JMenuItem Exit = new JMenuItem("Exit");
        Exit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ExitActionPerformed(evt);
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(File);
   File.add(Exit);
        f.add(menuBar,"North");
        f.show();
    private JMenuBar getMenuBar() {
        JMenu File = new JMenu("File");
        JMenuItem Exit = new JMenuItem("Exit");
        Exit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ExitActionPerformed(evt);
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(File);
             File.add(Exit);
        return menuBar;
    private void ExitActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        System.exit(0);
    // for standalone use
    public static void main(String args[]) {
TestProof TP = new TestProof();
}Test VIEW
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.text.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class TestView extends Canvas {
    int TRANSLUCENT = 1;
    int sequence;          // sequencer that determines what should be drawn
    // notes matter
    int noteX = 100;     // note coordinates
    int noteY = 60;
    int fontSize = 11;     // font size
    int lineSpacing     // space between two consecutive lines
    = fontSize + 2;
    Font noteFaceFont;     // font used to display notes
    // objects matter
    Polygon tri;          // right-angled triangle with sides A, B, and C
    Polygon tri1;
    Polygon sqrA;          // square with side of length A
    Polygon sqrB;          // square with side of length B
    Polygon sqrC;          // square with side of length C
    Polygon parA;          // parallelogram of base A and height A
    Polygon parB;          // parallelogram of base B and height B
    Polygon poly1;
    Polygon poly2;
    Polygon poly3;
    Polygon poly4;
    Polygon poly5;
    Polygon poly6;
    int X0 = 350;          // coordinates of triangle
    int Y0 = 350;
    int A = 90;//60;          // triangle size
    int B = 120;//80;
    int C = 150;//100;
    //CORDS of 2nd triangle
    int X1 = 350;
    int Y1 = 500;
    // notes: three lines per note
    String notes[] = {
        // note 0
        // note 1
        // note 2
        // note 3
        // note 4
        // note 5
        // note 6
        // note 7
        // note 8
        // note 9
        // note 10
        // note 11
        // note 12
        // note 13
        // note 14
    // constructor
    public TestView() {
        addMouseMotionListener(
        new MouseMotionListener() { //anonymous inner class
            //handle mouse drag event
            public void mouseMoved(MouseEvent e) {
                System.out.println("Mouse " + e.getX() +"," + e.getY());
            public void mouseDragged(MouseEvent e) {
                System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
        // set font
        noteFaceFont = new Font("TimesRoman", Font.PLAIN, fontSize);
        // (coordinates specified w.r.t. to P0, unless otherwise specified)
        // create the triangle
        tri = new Polygon();
        tri.addPoint(0, 0);                    // add P0 coordinate
        tri.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        tri.addPoint(C, 0);                    // add C1 coordinate
        tri.translate(X0, Y0);               // place triangle
        tri1 = new Polygon();
        tri1.addPoint(0,0);                    // add P0 coordinate
        tri1.addPoint(A*A/C +38, +A*B/C);          // add A3 coordinate
        tri1.addPoint(C, 0);                    // add C1 coordinate
        tri1.translate(X1, Y1);
        // create square of side A
        sqrA = new Polygon();
        sqrA.addPoint(0, 0);               // add P0 coordinate
        sqrA.addPoint(-A*B/C, -A*A/C);          // add A1 coordinate
        sqrA.addPoint(-A*(B-A)/C, -A*(A+B)/C);     // add A2 coordinate
        sqrA.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        sqrA.translate(X0, Y0);               // place square
        // create square of side B
        // warning: the coordinate of this object are specified relative to C1
        sqrB = new Polygon();
        sqrB.addPoint(0, 0);               // add C1 coordinate
        sqrB.addPoint(B*A/C, -B*B/C);          // add B1 coordinate
        sqrB.addPoint(B*(A-B)/C, -B*(A+B)/C);     // add B2 coordinate
        sqrB.addPoint(-B*B/C, -B*A/C);          // add A3 coordinate
        sqrB.translate(X0 + C, Y0);               // place square
        // create square of side C
        sqrC = new Polygon();
        sqrC.addPoint(0, 0);               // add P0 coordinate
        sqrC.addPoint(C, 0);               // add C1 coordinate
        sqrC.addPoint(C, C);               // add C2 coordinate
        sqrC.addPoint(0, C);               // add C3 coordinate
        sqrC.translate(X0, Y0);               // place square
        poly1 = new Polygon();
        poly1.addPoint(405,279);
        poly1.addPoint(413,350);
        poly1.addPoint(432,500);
        poly1.addPoint(442,571);
        poly1.addPoint(500,500);
        poly1.addPoint(500,350);
        poly2 = new Polygon();
        poly2.addPoint(279,297);
        poly2.addPoint(404,280);
        poly2.addPoint(571,254);
        poly2.addPoint(500,350);
        poly2.addPoint(350,350);
        //Polygon 3
        poly3 = new Polygon();
        poly3.addPoint(404,280);
        poly3.addPoint(350,350);
        poly3.addPoint(414,350);
        poly4 = new Polygon();
        poly4.addPoint(350,350);
        poly4.addPoint(350,500);
        poly4.addPoint(442,572);
        poly4.addPoint(433,500);
        poly4.addPoint(414,350);
        poly5 = new Polygon();
        poly5.addPoint(476,183);
        poly5.addPoint(332,225);
        poly5.addPoint(278,295);
        poly5.addPoint(404,279);
        poly5.addPoint(571,254);
        poly6= new Polygon();
        poly6.addPoint(405,278);
        poly6.addPoint(332,224);
        poly6.addPoint(476,182);
        // create parallelogram of height A
        parA = new Polygon();
        parA.addPoint(0, 0);               // add P0 coordinate
        parA.addPoint(0, C);               // add C3 coordinate
        parA.addPoint(A*A/C, C - A*B/C);          // add Q0 coordinate
        parA.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        parA.translate(X0,Y0);               // place parallelogram
        // create parallelogram of height B
        // warning: the coordinate of this object are specified from C1
        parB = new Polygon();
        parB.addPoint(0, 0);               // add C1 coordinate
        parB.addPoint(-B*B/C, -B*A/C);          // add A3 coordinate
        parB.addPoint(A*A/C - C, C - A*B/C);     // add Q0 coordinate
        parB.addPoint(0, C);               // add C2 coordinate
        parB.translate(X0 + C, Y0);
        // place parallelogram
    // depending on the sequence number we draw certain objects
    public void paint(Graphics gfx) {
        super.paint(gfx);
        Graphics2D g = (Graphics2D) gfx;
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
        // text first, then objects (and animation)
        // we always output some notes
        g.drawString(notes[3*sequence], noteX, noteY);
        g.drawString(notes[3*sequence + 1], noteX, noteY + lineSpacing);
        g.drawString(notes[3*sequence + 2], noteX, noteY + 2*lineSpacing);
        // the object are drawn in an order so that they are properly overlapped
        if(sequence == 13) {
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly2);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.fillPolygon(poly5);
            g.setColor(Color.RED);
            g.setColor(Color.GREEN);
            g.drawLine(413,351,433,499);
            g.setColor(Color.white);
            g.fillPolygon(tri);
            g.fillPolygon(tri1);
            g.fillPolygon(poly6);
        if(sequence == 12 ) {
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly2);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.fillPolygon(poly5);
            g.setColor(Color.BLACK);
        if(sequence == 11){
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.setColor(Color.BLACK);
        if(sequence == 8 ){
            g.setColor(Color.green);
            g.fillPolygon(poly5);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        else if (sequence == 9 ){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        if( sequence == 10){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.fillPolygon(poly5);
            g.setColor(Color.black);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        if(sequence == 7){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
        if(sequence == 6){
            g.setColor(Color.yellow);
            g.fillPolygon(poly2);
            g.setColor(Color.green);
            g.fillPolygon(poly3);
            g.setColor(Color.blue);
            g.fillPolygon(poly4);
            g.setColor(Color.black);
            g.drawArc(250,175,350,275,300,65);
            //g.drawArc(250,150,350,250,320,65);
            g.drawLine( 606,309,599,299);
            g.drawLine(592,313, 599,299);
            g.drawString("+90 degrees",605,378);
        if (sequence == 5 ) {
            g.setColor(Color.yellow);
            g.fillPolygon(poly2);
            g.setColor(Color.black);
        if (sequence == 4) {
            g.setColor(Color.YELLOW);
            g.fillPolygon(poly1);
            g.setColor(Color.black);
            g.drawArc(319,310,250,195,89,-35);
            g.drawLine(499,319, 492,312);
            g.drawLine(499,319, 492,325);
            g.drawArc(200,180, 233,238,-120,-60);
            g.drawLine(200,298, 208,309);
            g.drawLine(200,298, 194,313);
            g.drawString("-90 degrees",227,347);
        if (sequence >= 3) {
            g.drawLine(404,279,442,572);
        // draw the squares
        if (sequence >= 2) {
            g.drawLine(278,296,572,254);
        // draw the squares
        if (sequence >= 1) {
            g.drawLine(333,224,476,182);
            g.drawPolygon(tri1);
        // always draw the triangle
        g.drawPolygon(tri);
        g.drawPolygon(sqrA);
        g.drawPolygon(sqrB);
        g.drawPolygon(sqrC);
        g.setColor(Color.MAGENTA);
        g.drawString("C", X0 + C/2 - fontSize/2, Y0 + lineSpacing);
        g.drawString("A",
        X0 + A*A/(2*C) - fontSize*A/B/2,
        Y0 - A*B/(2*C) - lineSpacing*A/B);
        g.drawString("B",
        X0 + C - B*B/(2*C) - fontSize*A/B/2,// the last "-" isn't log.
        Y0 - B*A/(2*C) - lineSpacing*A/B);
    public void redraw(int sequence) {
        this.sequence = sequence;
        repaint();
}TEST CONTROL
* TestControl.java
* Created on 28 February 2005, 11:16
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.JFrame;
* @author Kripa Bhojwani
public class TestControl extends Panel implements ActionListener {
TestView view;
int sequence;                    // event sequence
// constructor
public TestControl(TestView view) {
    Button b = null;
    Label label = new Label("A^2 ");
    this.view = view;          // initialize drawble area
    sequence = 0;               // initialize sequence
    b = new Button("Prev");
    b.addActionListener(this);
    add(b);
    b = new Button("Next");
    b.addActionListener(this);
    add(b);
    add(label);
// exported method
public void actionPerformed(ActionEvent ev) {
    String label = ev.getActionCommand();
    if (label.equals("Prev")) {
      if (sequence >0) {
     --sequence;
    else {
      if (sequence < 15) {
     ++sequence;
    this.setEnabled(false);          // disable the controls
    view.redraw(sequence);
    this.setEnabled(true);          // enable the controls
}Please help --- really need to sort this out...
THANKS

Can any one help me with this --
basically need to draw a triangle with BC as the Base and the HYPOTENUSE of a right angle triangle right angled at A...
[    code]
A
B/-----------------------------/C
So angle A should be 90 degrees
and the user should be able to Drag sides B and C anywhere on screen
PLEASE HELP

PYTHAGORAS THEOREM ) HELP NEEDED

Hi everyone - I am developing various proofs of the pythagora's theorem
and the following code draws a triangle on screen and the proof follows -
but i need to know how to drag the triangle such tht 1 angle is always set to 90 degrees.
i.e. i need to resize the triangle by dragging its vertex points by which the1 angle remains at 90 no matter what the size.
The proof has got some graphics code hardcoded in it - i.e. LINES AND POLYGONS have been hardcoded
i need to reconfigure that such that everytime the user increases the size of the triagnle and clicks on next it draws the lines and polygons in the correct area and place
PLEASE HELP
the code is as follows
MAIN CLASS
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.*;
public class TestProof {
    TestControl control;          // the controls for the visual proof
    TestView view;          // the drawing area to display proof
    // called upon class creation
    public TestProof() {
        view = new TestView();
view.setBackground(Color.WHITE);
        control = new TestControl(view);
        Frame f = new Frame("Pythagoras");
        f.add(view,"Center");
        f.add(control,"South");
        f.setSize(600,600);
        f.setBackground(Color.lightGray);
        f.addMouseMotionListener(
        new MouseMotionListener() { //anonymous inner class
            //handle mouse drag event
            public void mouseMoved(MouseEvent e) {
                System.out.println("Mouse " + e.getX() +"," + e.getY());
            public void mouseDragged(MouseEvent e) {
                System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
        JMenu File = new JMenu("File");
        JMenuItem Exit = new JMenuItem("Exit");
        Exit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ExitActionPerformed(evt);
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(File);
   File.add(Exit);
        f.add(menuBar,"North");
        f.show();
    private JMenuBar getMenuBar() {
        JMenu File = new JMenu("File");
        JMenuItem Exit = new JMenuItem("Exit");
        Exit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ExitActionPerformed(evt);
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(File);
             File.add(Exit);
        return menuBar;
    private void ExitActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        System.exit(0);
    // for standalone use
    public static void main(String args[]) {
TestProof TP = new TestProof();
}Test VIEW
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.text.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class TestView extends Canvas {
    int TRANSLUCENT = 1;
    int sequence;          // sequencer that determines what should be drawn
    // notes matter
    int noteX = 100;     // note coordinates
    int noteY = 60;
    int fontSize = 11;     // font size
    int lineSpacing     // space between two consecutive lines
    = fontSize + 2;
    Font noteFaceFont;     // font used to display notes
    // objects matter
    Polygon tri;          // right-angled triangle with sides A, B, and C
    Polygon tri1;
    Polygon sqrA;          // square with side of length A
    Polygon sqrB;          // square with side of length B
    Polygon sqrC;          // square with side of length C
    Polygon parA;          // parallelogram of base A and height A
    Polygon parB;          // parallelogram of base B and height B
    Polygon poly1;
    Polygon poly2;
    Polygon poly3;
    Polygon poly4;
    Polygon poly5;
    Polygon poly6;
    int X0 = 350;          // coordinates of triangle
    int Y0 = 350;
    int A = 90;//60;          // triangle size
    int B = 120;//80;
    int C = 150;//100;
    //CORDS of 2nd triangle
    int X1 = 350;
    int Y1 = 500;
    // notes: three lines per note
    String notes[] = {
        // note 0
        // note 1
        // note 2
        // note 3
        // note 4
        // note 5
        // note 6
        // note 7
        // note 8
        // note 9
        // note 10
        // note 11
        // note 12
        // note 13
        // note 14
    // constructor
    public TestView() {
        addMouseMotionListener(
        new MouseMotionListener() { //anonymous inner class
            //handle mouse drag event
            public void mouseMoved(MouseEvent e) {
                System.out.println("Mouse " + e.getX() +"," + e.getY());
            public void mouseDragged(MouseEvent e) {
                System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
        // set font
        noteFaceFont = new Font("TimesRoman", Font.PLAIN, fontSize);
        // (coordinates specified w.r.t. to P0, unless otherwise specified)
        // create the triangle
        tri = new Polygon();
        tri.addPoint(0, 0);                    // add P0 coordinate
        tri.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        tri.addPoint(C, 0);                    // add C1 coordinate
        tri.translate(X0, Y0);               // place triangle
        tri1 = new Polygon();
        tri1.addPoint(0,0);                    // add P0 coordinate
        tri1.addPoint(A*A/C +38, +A*B/C);          // add A3 coordinate
        tri1.addPoint(C, 0);                    // add C1 coordinate
        tri1.translate(X1, Y1);
        // create square of side A
        sqrA = new Polygon();
        sqrA.addPoint(0, 0);               // add P0 coordinate
        sqrA.addPoint(-A*B/C, -A*A/C);          // add A1 coordinate
        sqrA.addPoint(-A*(B-A)/C, -A*(A+B)/C);     // add A2 coordinate
        sqrA.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        sqrA.translate(X0, Y0);               // place square
        // create square of side B
        // warning: the coordinate of this object are specified relative to C1
        sqrB = new Polygon();
        sqrB.addPoint(0, 0);               // add C1 coordinate
        sqrB.addPoint(B*A/C, -B*B/C);          // add B1 coordinate
        sqrB.addPoint(B*(A-B)/C, -B*(A+B)/C);     // add B2 coordinate
        sqrB.addPoint(-B*B/C, -B*A/C);          // add A3 coordinate
        sqrB.translate(X0 + C, Y0);               // place square
        // create square of side C
        sqrC = new Polygon();
        sqrC.addPoint(0, 0);               // add P0 coordinate
        sqrC.addPoint(C, 0);               // add C1 coordinate
        sqrC.addPoint(C, C);               // add C2 coordinate
        sqrC.addPoint(0, C);               // add C3 coordinate
        sqrC.translate(X0, Y0);               // place square
        poly1 = new Polygon();
        poly1.addPoint(405,279);
        poly1.addPoint(413,350);
        poly1.addPoint(432,500);
        poly1.addPoint(442,571);
        poly1.addPoint(500,500);
        poly1.addPoint(500,350);
        poly2 = new Polygon();
        poly2.addPoint(279,297);
        poly2.addPoint(404,280);
        poly2.addPoint(571,254);
        poly2.addPoint(500,350);
        poly2.addPoint(350,350);
        //Polygon 3
        poly3 = new Polygon();
        poly3.addPoint(404,280);
        poly3.addPoint(350,350);
        poly3.addPoint(414,350);
        poly4 = new Polygon();
        poly4.addPoint(350,350);
        poly4.addPoint(350,500);
        poly4.addPoint(442,572);
        poly4.addPoint(433,500);
        poly4.addPoint(414,350);
        poly5 = new Polygon();
        poly5.addPoint(476,183);
        poly5.addPoint(332,225);
        poly5.addPoint(278,295);
        poly5.addPoint(404,279);
        poly5.addPoint(571,254);
        poly6= new Polygon();
        poly6.addPoint(405,278);
        poly6.addPoint(332,224);
        poly6.addPoint(476,182);
        // create parallelogram of height A
        parA = new Polygon();
        parA.addPoint(0, 0);               // add P0 coordinate
        parA.addPoint(0, C);               // add C3 coordinate
        parA.addPoint(A*A/C, C - A*B/C);          // add Q0 coordinate
        parA.addPoint(A*A/C, -A*B/C);          // add A3 coordinate
        parA.translate(X0,Y0);               // place parallelogram
        // create parallelogram of height B
        // warning: the coordinate of this object are specified from C1
        parB = new Polygon();
        parB.addPoint(0, 0);               // add C1 coordinate
        parB.addPoint(-B*B/C, -B*A/C);          // add A3 coordinate
        parB.addPoint(A*A/C - C, C - A*B/C);     // add Q0 coordinate
        parB.addPoint(0, C);               // add C2 coordinate
        parB.translate(X0 + C, Y0);
        // place parallelogram
    // depending on the sequence number we draw certain objects
    public void paint(Graphics gfx) {
        super.paint(gfx);
        Graphics2D g = (Graphics2D) gfx;
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
        // text first, then objects (and animation)
        // we always output some notes
        g.drawString(notes[3*sequence], noteX, noteY);
        g.drawString(notes[3*sequence + 1], noteX, noteY + lineSpacing);
        g.drawString(notes[3*sequence + 2], noteX, noteY + 2*lineSpacing);
        // the object are drawn in an order so that they are properly overlapped
        if(sequence == 13) {
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly2);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.fillPolygon(poly5);
            g.setColor(Color.RED);
            g.setColor(Color.GREEN);
            g.drawLine(413,351,433,499);
            g.setColor(Color.white);
            g.fillPolygon(tri);
            g.fillPolygon(tri1);
            g.fillPolygon(poly6);
        if(sequence == 12 ) {
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly2);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.fillPolygon(poly5);
            g.setColor(Color.BLACK);
        if(sequence == 11){
            g.setColor(Color.green);
            g.fillPolygon(poly1);
            g.fillPolygon(poly3);
            g.fillPolygon(poly4);
            g.setColor(Color.BLACK);
        if(sequence == 8 ){
            g.setColor(Color.green);
            g.fillPolygon(poly5);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        else if (sequence == 9 ){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        if( sequence == 10){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.fillPolygon(poly5);
            g.setColor(Color.black);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
            g.drawArc(250,150,350,250,320,65);
        if(sequence == 7){
            g.setColor(Color.green);
            g.fillPolygon(poly2);
            g.setColor(Color.MAGENTA);
            g.drawString("E",578,254);
            g.drawString("D",268,302);
            g.setColor(Color.black);
        if(sequence == 6){
            g.setColor(Color.yellow);
            g.fillPolygon(poly2);
            g.setColor(Color.green);
            g.fillPolygon(poly3);
            g.setColor(Color.blue);
            g.fillPolygon(poly4);
            g.setColor(Color.black);
            g.drawArc(250,175,350,275,300,65);
            //g.drawArc(250,150,350,250,320,65);
            g.drawLine( 606,309,599,299);
            g.drawLine(592,313, 599,299);
            g.drawString("+90 degrees",605,378);
        if (sequence == 5 ) {
            g.setColor(Color.yellow);
            g.fillPolygon(poly2);
            g.setColor(Color.black);
        if (sequence == 4) {
            g.setColor(Color.YELLOW);
            g.fillPolygon(poly1);
            g.setColor(Color.black);
            g.drawArc(319,310,250,195,89,-35);
            g.drawLine(499,319, 492,312);
            g.drawLine(499,319, 492,325);
            g.drawArc(200,180, 233,238,-120,-60);
            g.drawLine(200,298, 208,309);
            g.drawLine(200,298, 194,313);
            g.drawString("-90 degrees",227,347);
        if (sequence >= 3) {
            g.drawLine(404,279,442,572);
        // draw the squares
        if (sequence >= 2) {
            g.drawLine(278,296,572,254);
        // draw the squares
        if (sequence >= 1) {
            g.drawLine(333,224,476,182);
            g.drawPolygon(tri1);
        // always draw the triangle
        g.drawPolygon(tri);
        g.drawPolygon(sqrA);
        g.drawPolygon(sqrB);
        g.drawPolygon(sqrC);
        g.setColor(Color.MAGENTA);
        g.drawString("C", X0 + C/2 - fontSize/2, Y0 + lineSpacing);
        g.drawString("A",
        X0 + A*A/(2*C) - fontSize*A/B/2,
        Y0 - A*B/(2*C) - lineSpacing*A/B);
        g.drawString("B",
        X0 + C - B*B/(2*C) - fontSize*A/B/2,// the last "-" isn't log.
        Y0 - B*A/(2*C) - lineSpacing*A/B);
    public void redraw(int sequence) {
        this.sequence = sequence;
        repaint();
}TEST CONTROL
* TestControl.java
* Created on 28 February 2005, 11:16
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.JFrame;
* @author Kripa Bhojwani
public class TestControl extends Panel implements ActionListener {
TestView view;
int sequence;                    // event sequence
// constructor
public TestControl(TestView view) {
    Button b = null;
    Label label = new Label("A^2 ");
    this.view = view;          // initialize drawble area
    sequence = 0;               // initialize sequence
    b = new Button("Prev");
    b.addActionListener(this);
    add(b);
    b = new Button("Next");
    b.addActionListener(this);
    add(b);
    add(label);
// exported method
public void actionPerformed(ActionEvent ev) {
    String label = ev.getActionCommand();
    if (label.equals("Prev")) {
      if (sequence >0) {
     --sequence;
    else {
      if (sequence < 15) {
     ++sequence;
    this.setEnabled(false);          // disable the controls
    view.redraw(sequence);
    this.setEnabled(true);          // enable the controls
}Please help --- really need to sort this out...
THANKS

Cross post http://forum.java.sun.com/thread.jspa?threadID=603432&messageID=3251958#3251958

PYTHAGORAS THEOREM

I need to know if anyone has coded the pythagoras theorem using areas of squares to prove the theorem.
I have got a triangle on screen with my angles and side lengths displayed in a jtable. I need to extend it to display the sides as squares.
such that the ares of the side and the base = area of the square from the hypotenuse..
PLEASE REPLY SOON

such that the ares of the side and the base = area of
the square from the hypotenuse..You only have to display the square of the three sides. Pythagoras will personally take care of the theorem for you from his small study in Math Heaven.

Pension not calculated when EE is hired mid-month

Hi All
Please suggest for the following....
When an Employee is hired in the middle of the month, the system doesn't calculate Pension Contribution.
Like if an EE is hired on 10th April. The system will calculate all payments & deductions, but it is not calculating the Pension Contributions.
I am maintaining IT 169, 171 for Pension Contribution.
The problem I found behind this is.....(WIth the help of an ABAPer)
-: System checks the Payroll Period Start Date with the Org. Assignment start date. When it doesnu2019t match, the system does not calculate the Pension Contribution.
For the time being I solved this through the following action -: In debugging, I canceled this condition (skipped this check). Then it calculated the Pension Contribution.
But, this is not the right solution for achieving that as we are changing standard SAP coding.
Please suggest any solution for the same.
Thanks & Regards

If your schema has p0169 with BEG that will happen, try put below Param1 which fits your requirement.
BEG
Infotype records are evaluated on the payroll period begin date.
No changes within the current payroll period are taken into
consideration.
No proration of contributions takes place, even if the record ends
within the current payroll period.
END
Infotype records are evaluated on the payroll period end date.
No changes within the current payroll period are taken into
consideration.
No proration of contributions takes place, even if the record begins
within the current payroll period.
CHK
Infotype records are evaluated on the payroll check date (the pay date),
regardless of whether the check date falls into the payroll period
itself.
A record whose validity starts after the end date of the current payroll
period is still evaluated if the check date (which lies in the future)
falls within the validity period of the infotype.
FRST
Infotype records are evaluated if there is any intersection of plan
infotype and payroll period. The first intersection is taken to
determine the full period deduction amount which is stored without
proration.
LAST
Infotype records are evaluated if there is any intersection of plan
infotype and payroll period. The last intersection is taken to determine
the full period deduction amount which is stored without proration.

Mid-Month Calculations

I am bringing a fixed asset system online in SAP and during the legacy conversion it was realized that the test system is not calculating the depreciation using a mid month convention. That being said looking at the configuration the company code was setup in 2005 and is in production and is productive (since 2005). So it appears that this setting is global and SAP will not allow me to change these settings to allow mid month calculations. Is this correct? anyone ran across the same issue.

Hi
please read the note 2993 and 39416!
Best Regards,
Blaz

Mid month action_Pension (/3f4) calculation wrong

Hi All,
I get one problem , when payroll run for employee, whose action run in the mid of the month. for ex. 15.05.2010(Transfer action)
In that case the pension amount (/3f4) is calculating double or more than 541...which is wrong.
Kindly provde the input to resolve the same....
Regards,
Mahesh
Edited by: Mahesh Shewale on Sep 1, 2010 1:08 PM
Edited by: Mahesh Shewale on Sep 2, 2010 7:18 AM

Hi Mahesh,
Please make changes in User exit provided as per your requirement and then check the results
There are 2 user exit
EXIT_HINCALC0_002 for pension basis.
EXIT_HINCALC0_007

''Prepare interest on arrear calculation''

Dear Sap Gurus,
Under Prepard interest on arrears calculation there are 4 options available 1. open and all cleared items, 2.open items and items cleared with payment, 3.no open items -all cleard items, 4.no open items -only items cleared with a payment. My doubt is When and where we have to use these options. Could you explain with examples.
Thanks in advance
Thanks&Regards,
Periasamy.M

Usuallu we select Open and All Cleared Items
Remaining options purely based on the client interest calculation requirements.

Interest calculation

Hi
I hv configured the interest calculation as shown below
1.Define interest calculation type (item interest calculation)
2.Define number ranges for interest forms(for xxxx company code)
3.Prepare Interest on Arrears Calculation(selected open and all cleared items, calender type F)
4.Define reference interest rates
5.Define Time-Based Terms
6.Enter Interest Values
7.Assign Forms for Interest Indicators
i have made postings in customer both open and cleared items for testing
but i got message"list contains no data"
do i need to make any other config.
useful answers would be rewarded with points
Regards
Prasad

Hi Prasad
PLease check whether Customer master records are assigned with correct "Interest Indicator" at company code data.
Best reagards,
S. Habib Pasha.

Pythagoras calculation

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