Added scale

Author: EKarton

api/src/main/java/com/javaphysicsengine/api/PWorld.java

@@ -20,10 +20,11 @@
 public class PWorld {
     // Physic properties about this world
     private static final double GRAVITY_ACCELERATION = -9.81;
+    private static final double SCALE = 100;
 
     // List containing the physical bodies and joints
-    private ArrayList<PBody> bodies = new ArrayList<PBody>();
-    private ArrayList<PConstraints> constraints = new ArrayList<PConstraints>();
+    private ArrayList<PBody> bodies = new ArrayList<>();
+    private ArrayList<PConstraints> constraints = new ArrayList<>();
 
     /**
      * Post-condition: Returns the list of bodies added to the world
@@ -139,8 +140,8 @@ private void translateBodies(double timeEllapsed) {
             body.getVelocity().setY(body.getVelocity().getY() + accelerationY * timeEllapsed);
 
             // Getting the amount to translate by (Velocity = displacement / time)
-            double dx = body.getVelocity().getX() * timeEllapsed;
-            double dy = body.getVelocity().getY() * timeEllapsed;
+            double dx = body.getVelocity().getX() * timeEllapsed * SCALE;
+            double dy = body.getVelocity().getY() * timeEllapsed * SCALE;
 
             // Translate the body
             body.translate(new Vector(dx, dy));

api/src/main/java/com/javaphysicsengine/api/body/PBody.java

@@ -30,6 +30,7 @@ public abstract class PBody {
     // The graphic properties of the object
     private Color outlineColor = Color.BLACK;
     private Color fillColor = Color.BLUE;
+    private Color normalVectorColor = Color.RED;
 
     public Color getNormalVectorColor() {
         return normalVectorColor;
@@ -39,8 +40,6 @@ public void setNormalVectorColor(Color normalVectorColor) {
         this.normalVectorColor = normalVectorColor;
     }
 
-    private Color normalVectorColor = Color.RED;
-
     /**
      * Creates a PBody object with a certain name attached
      * Pre-condition: "bodyName" must not be null