Ability to rotate tube sockets for arbitrary angle

diylc/diylc-core/src/org/diylc/components/transform/DefaultTransformer.java

@@ -0,0 +1,33 @@
+package org.diylc.components.transform;
+
+import java.awt.Point;
+
+import org.diylc.common.IComponentTransformer;
+import org.diylc.core.IDIYComponent;
+
+public class DefaultTransformer implements IComponentTransformer {
+
+  @Override
+  public boolean canRotate(IDIYComponent<?> component) {
+    return false;
+  }
+
+  @Override
+  public boolean canMirror(IDIYComponent<?> component) {
+    return false;
+  }
+  
+  @Override
+  public boolean mirroringChangesCircuit() {   
+    return false;
+  }
+
+  @Override
+  public void rotate(IDIYComponent<?> component, Point center, int direction) {
+  }
+
+  @Override
+  public void mirror(IDIYComponent<?> component, Point center, int direction) {
+  }
+
+}

diylc/diylc-core/src/org/diylc/components/transform/LeadedComponentTransformer.java

@@ -0,0 +1,48 @@
+package org.diylc.components.transform;
+
+import java.awt.Point;
+import java.awt.geom.AffineTransform;
+
+import org.diylc.common.IComponentTransformer;
+import org.diylc.core.IDIYComponent;
+
+public class LeadedComponentTransformer implements IComponentTransformer {
+
+  @Override
+  public boolean canRotate(IDIYComponent<?> component) {
+    return true;
+  }
+
+  @Override
+  public boolean canMirror(IDIYComponent<?> component) {
+    return true;
+  }
+  
+  @Override
+  public boolean mirroringChangesCircuit() {   
+    return false;
+  }
+
+  @Override
+  public void rotate(IDIYComponent<?> component, Point center, int direction) {
+    AffineTransform rotate = AffineTransform.getRotateInstance(Math.PI / 2 * direction, center.x, center.y);
+    for (int index = 0; index < component.getControlPointCount(); index++) {
+      Point p = new Point(component.getControlPoint(index));
+      rotate.transform(p, p);
+      component.setControlPoint(p, index);
+    }
+  }
+
+  @Override
+  public void mirror(IDIYComponent<?> component, Point center, int direction) {
+    for (int i = 0; i < component.getControlPointCount(); i++) {
+      Point p = component.getControlPoint(i);
+      if (direction == IComponentTransformer.HORIZONTAL) {
+        component.setControlPoint(new Point(p.x - 2 * (p.x - center.x), p.y), i);
+      } else {
+        component.setControlPoint(new Point(p.x, p.y - 2 * (p.y - center.y)), i);
+      }
+    }
+  }
+
+}