From 4b7f4dfd52f9e957a37b13be477e8036ef70138c Mon Sep 17 00:00:00 2001
From: Luca Conte <main@lugico.de>
Date: Wed, 26 Apr 2023 17:25:58 +0200
Subject: [PATCH] u12

---
 u12/.classpath                                | 12 +++
 u12/.gitignore                                |  1 +
 u12/.project                                  | 17 ++++
 u12/.settings/org.eclipse.jdt.core.prefs      | 14 ++++
 .../hsh/prog/klassedashedline/DashedLine.java | 79 +++++++++++++++++++
 5 files changed, 123 insertions(+)
 create mode 100644 u12/.classpath
 create mode 100644 u12/.gitignore
 create mode 100644 u12/.project
 create mode 100644 u12/.settings/org.eclipse.jdt.core.prefs
 create mode 100644 u12/src/de/hsh/prog/klassedashedline/DashedLine.java

diff --git a/u12/.classpath b/u12/.classpath
new file mode 100644
index 0000000..7a144eb
--- /dev/null
+++ b/u12/.classpath
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="lib" path="/home/stud/p8q-yhw-u1/Downloads/liblocline.jar"/>
+	<classpathentry kind="lib" path="/home/stud/p8q-yhw-u1/Downloads/DrawingPanel(1).jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/u12/.gitignore b/u12/.gitignore
new file mode 100644
index 0000000..ae3c172
--- /dev/null
+++ b/u12/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/u12/.project b/u12/.project
new file mode 100644
index 0000000..24c8433
--- /dev/null
+++ b/u12/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>u12</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/u12/.settings/org.eclipse.jdt.core.prefs b/u12/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..8c9943d
--- /dev/null
+++ b/u12/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,14 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=17
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=17
diff --git a/u12/src/de/hsh/prog/klassedashedline/DashedLine.java b/u12/src/de/hsh/prog/klassedashedline/DashedLine.java
new file mode 100644
index 0000000..1818605
--- /dev/null
+++ b/u12/src/de/hsh/prog/klassedashedline/DashedLine.java
@@ -0,0 +1,79 @@
+package de.hsh.prog.klassedashedline;
+
+import java.awt.Graphics;
+import java.util.Arrays;
+
+/**
+ * Klasse zum speichern und Zeichnen einer gestrichelten Linie
+ * @author p8q-yhw-u1
+ *
+ */
+public class DashedLine extends Line {
+    
+    private int[] dashes;
+    
+    /**
+     * Erstellt ein DashedLine Objekt
+     * @param l1 Startpunkt der Linie
+     * @param l2 Endpunkt der Linie
+     * @param dashes Zeichenmuster, ein Integer Array von Pixel-Längen.
+     * Geradzahlige Indexe => Strich, Ungradzahlige Indexe => Lücke
+     */
+    public DashedLine(Loc l1, Loc l2, int[] dashes) {
+        super(l1, l2);
+        
+        if (dashes.length <= 0) {
+            throw new IllegalArgumentException("dashes muss mindestens ein Element enthalten");
+        }
+        
+        this.dashes = dashes;
+    }
+    
+    /**
+     * Zeichnet die gestrichelt Linie mit einem Graphics Objekt
+     */
+    @Override
+    public void draw(Graphics g) {
+        double x = this.getP1().getX();
+        double y = this.getP1().getY();
+
+        double totalLen = this.getP1().distance(this.getP2());
+        
+        double dx = this.getP2().getX() - x;
+        double dy = this.getP2().getY() - y;
+        
+        double currLen = 0;
+        int currDash = 0;
+        
+        while (currLen < totalLen) {
+            
+            double dashLen = dashes[currDash];
+            
+            if (dashLen + currLen > totalLen) {
+                dashLen = totalLen - currLen;
+            }
+            
+            double nextx = x + dx * dashLen / totalLen;
+            double nexty = y + dy * dashLen / totalLen;
+            
+            if (currDash % 2 == 0) {
+                new Line((int) x, (int) y, (int) nextx, (int) nexty).draw(g);
+            }
+            
+            x = nextx;
+            y = nexty;
+            
+            currLen += dashLen;
+            currDash = (currDash + 1) % this.dashes.length;
+        }
+    }
+    
+    /**
+     * Gibt die Linie in String-Form aus
+     */
+    @Override
+    public String toString() {
+        return "[" + super.toString() + ", dashes=" + Arrays.toString(dashes) + "]";
+    }
+    
+}