nicer interpolation

.project

@@ -5,6 +5,11 @@
 	<projects>
 	</projects>
 	<buildSpec>
+		<buildCommand>
+			<name>org.python.pydev.PyDevBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>org.eclipse.jdt.core.javabuilder</name>
 			<arguments>
@@ -13,5 +18,6 @@
 	</buildSpec>
 	<natures>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.python.pydev.pythonNature</nature>
 	</natures>
 </projectDescription>

.pydevproject

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?eclipse-pydev version="1.0"?>
+
+<pydev_project>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.6</pydev_property>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
+</pydev_project>

src/peasy/InterpolationUtil.java

@@ -46,6 +46,19 @@ static public Rotation slerp(final Rotation a, final Rotation b, final double t)
 				* b.getQ3(), true);
 	}
 
+	static public double smooth(final double a, final double b, final double t)
+	{
+		final double smooth = (t * t * (3 - 2 * t));
+		return (b * smooth) + (a * (1 - smooth));
+
+	}
+
+	static public Vector3D smooth(final Vector3D a, final Vector3D b, final double t)
+	{
+		return new Vector3D(smooth(a.getX(), b.getX(), t), smooth(a.getY(), b.getY(), t),
+				smooth(a.getZ(), b.getZ(), t));
+	}
+
 	static public double linear(final double a, final double b, final double t)
 	{
 		return a + (b - a) * t;

src/peasy/PeasyCam.java

@@ -18,9 +18,6 @@
  */
 package peasy;
 
-import static peasy.InterpolationUtil.linear;
-import static peasy.InterpolationUtil.slerp;
-
 import java.awt.event.KeyEvent;
 import java.awt.event.MouseEvent;
 
@@ -298,9 +295,9 @@ public void draw()
 			}
 			else
 			{
-				rotation = slerp(startRotation, endRotation, t);
-				center = linear(startCenter, endCenter, t);
-				distance = linear(startDistance, endDistance, t);
+				rotation = InterpolationUtil.slerp(startRotation, endRotation, t);
+				center = InterpolationUtil.smooth(startCenter, endCenter, t);
+				distance = InterpolationUtil.smooth(startDistance, endDistance, t);
 			}
 			feed();
 		}