added all past projects

Java/GeometrischeFiguren/src/geometrischefiguren/Dreieck.java

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+package geometrischefiguren;
+
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.geom.GeneralPath;
+
+public class Dreieck extends Strecke {
+
+    protected Strecke _b, _a;
+
+    public Dreieck(Punkt a, Punkt b, Punkt c) {
+        super(a, b);
+        this._a = new Strecke(b, c);
+        this._b = new Strecke(c, a);
+    }
+
+    @Override
+    public void zeichne(Graphics g) {
+//        super.zeichne(g);
+//        _a.zeichne(g);
+//        _b.zeichne(g);
+        // draw GeneralPath (polygon)
+        
+        int x1Points[] = {this.x, this._a.x, this._b.x};
+        int y1Points[] = {this.y, this._a.y, this._b.y};
+        GeneralPath polygon =
+                new GeneralPath(GeneralPath.WIND_EVEN_ODD,
+                x1Points.length);
+        polygon.moveTo(x1Points[0], y1Points[0]);
+
+        for (int index = 1; index < x1Points.length; index++) {
+            polygon.lineTo(x1Points[index], y1Points[index]);
+        };
+
+        polygon.closePath();
+        ((Graphics2D)g).draw(polygon);
+        //((Graphics2D)g).fill(polygon);
+        
+    }
+}

Java/GeometrischeFiguren/src/geometrischefiguren/GeometrischeFigurenOberfläche.form

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+<?xml version="1.0" encoding="UTF-8" ?>
+
+<Form version="1.3" maxVersion="1.8" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
+  <Properties>
+    <Property name="defaultCloseOperation" type="int" value="3"/>
+  </Properties>
+  <SyntheticProperties>
+    <SyntheticProperty name="formSizePolicy" type="int" value="1"/>
+    <SyntheticProperty name="generateCenter" type="boolean" value="false"/>
+  </SyntheticProperties>
+  <AuxValues>
+    <AuxValue name="FormSettings_autoResourcing" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_autoSetComponentName" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_generateFQN" type="java.lang.Boolean" value="true"/>
+    <AuxValue name="FormSettings_generateMnemonicsCode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_i18nAutoMode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_layoutCodeTarget" type="java.lang.Integer" value="1"/>
+    <AuxValue name="FormSettings_listenerGenerationStyle" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_variablesLocal" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_variablesModifier" type="java.lang.Integer" value="2"/>
+  </AuxValues>
+
+  <Layout>
+    <DimensionLayout dim="0">
+      <Group type="103" groupAlignment="0" attributes="0">
+          <EmptySpace min="0" pref="400" max="32767" attributes="0"/>
+      </Group>
+    </DimensionLayout>
+    <DimensionLayout dim="1">
+      <Group type="103" groupAlignment="0" attributes="0">
+          <EmptySpace min="0" pref="300" max="32767" attributes="0"/>
+      </Group>
+    </DimensionLayout>
+  </Layout>
+</Form>

Java/GeometrischeFiguren/src/geometrischefiguren/GeometrischeFigurenOberfläche.java

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+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package geometrischefiguren;
+
+import java.awt.Graphics;
+import java.util.ArrayList;
+
+/**
+ *
+ * @author Hannes
+ */
+public class GeometrischeFigurenOberfläche extends javax.swing.JFrame {
+    ArrayList<Punkt> p = new ArrayList();
+    
+    /**
+     * Creates new form GeometrischeFigurenOberfläche
+     */
+    public GeometrischeFigurenOberfläche() {
+        initComponents();
+        p.add(new Kreis(new Punkt(150, 150), 50));
+        p.add(new Punkt(10, 100));
+        p.add(new Strecke(10, 20, new Punkt(100, 100)));
+        p.add(new Dreieck(new Punkt(100,200), new Punkt(200, 300), new Punkt(10, 10)));
+    }
+
+    @Override
+    public void paint(Graphics g) {
+        super.paint(g);
+        for (Punkt m : p) {
+            m.zeichne(g);
+        }
+    }
+
+    /**
+     * This method is called from within the constructor to initialize the form.
+     * WARNING: Do NOT modify this code. The content of this method is always
+     * regenerated by the Form Editor.
+     */
+    @SuppressWarnings("unchecked")
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
+
+        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+
+        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
+        getContentPane().setLayout(layout);
+        layout.setHorizontalGroup(
+            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
+            .addGap(0, 400, Short.MAX_VALUE)
+        );
+        layout.setVerticalGroup(
+            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
+            .addGap(0, 300, Short.MAX_VALUE)
+        );
+
+        pack();
+    }// </editor-fold>//GEN-END:initComponents
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String args[]) {
+        /* Set the Nimbus look and feel */
+        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
+        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
+         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
+         */
+        try {
+            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
+                if ("Nimbus".equals(info.getName())) {
+                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
+                    break;
+                }
+            }
+        } catch (ClassNotFoundException ex) {
+            java.util.logging.Logger.getLogger(GeometrischeFigurenOberfläche.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (InstantiationException ex) {
+            java.util.logging.Logger.getLogger(GeometrischeFigurenOberfläche.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (IllegalAccessException ex) {
+            java.util.logging.Logger.getLogger(GeometrischeFigurenOberfläche.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
+            java.util.logging.Logger.getLogger(GeometrischeFigurenOberfläche.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+        }
+        //</editor-fold>
+
+        /* Create and display the form */
+        java.awt.EventQueue.invokeLater(new Runnable() {
+            public void run() {
+                new GeometrischeFigurenOberfläche().setVisible(true);
+            }
+        });
+    }
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    // End of variables declaration//GEN-END:variables
+}

Java/GeometrischeFiguren/src/geometrischefiguren/Kreis.java

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+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package geometrischefiguren;
+
+import java.awt.Graphics;
+
+/**
+ *
+ * @author Hannes
+ */
+public class Kreis extends Punkt {
+
+    int r;
+
+    public Kreis(Punkt p, int radius) {
+        super(p.x, p.y);
+        r = radius;
+    }
+
+    @Override
+    public void zeichne(Graphics g) {
+        super.zeichne(g);
+        g.drawOval(x - r, y - r, r*2, r*2);
+        
+    }
+}

Java/GeometrischeFiguren/src/geometrischefiguren/Punkt.java

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+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package geometrischefiguren;
+
+import java.awt.Graphics;
+
+/**
+ *
+ * @author Hannes
+ */
+public class Punkt {
+    protected int x, y; //Koordinaten in der Zeichnung
+    
+    public Punkt(int posX, int posY)
+    {
+        this.x = posX;
+        this.y = posY;
+    }
+    
+    public void zeichne(Graphics g)
+    {
+        g.drawRect(x, y, 1, 1);
+    }
+    
+    @Override
+    public String toString()
+    {
+        return "(" + x + "," + y + ")";
+    }
+    
+}

Java/GeometrischeFiguren/src/geometrischefiguren/Strecke.java

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+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package geometrischefiguren;
+
+import java.awt.Graphics;
+
+/**
+ *
+ * @author Hannes
+ */
+public class Strecke extends Punkt {
+    protected Punkt _ende;
+    protected double länge;
+    
+    public Strecke(Punkt anfang, Punkt ende)
+    {
+        super(anfang.x, anfang.y); //Super ruft den Konstruktor der Elternklasse Punkt auf 
+        //ererbte eigenschaft hat somit die Bedeutung des Punktes von dem aus gezeichnet wird
+        this._ende = ende;
+        setLänge();
+    }
+    public Strecke(int x, int y, Punkt ende)
+    {
+        super(x,y);
+        this._ende = ende;
+        setLänge();
+    }
+    @Override
+    public void zeichne(Graphics g)
+    {
+        g.drawLine(x, y, _ende.x, _ende.y);
+    }
+    @Override
+    public String toString()
+    {
+        return "Strecke(" + super.toString() + " bis " + _ende + "; länge( " + länge + " ))";
+    }
+    private void setLänge()
+    {
+        int deltaX = x - _ende.x;
+        int deltaY = y - _ende.y;
+        länge = Math.sqrt(deltaX*deltaX + deltaY*deltaY); // sqrt(a^2 + b^2)
+    }
+}