1 files changed, 89 insertions, 0 deletions
diff --git a/CSMath/src/bezier/geom/transform/TDHTranslate.java b/CSMath/src/bezier/geom/transform/TDHTranslate.java
new file mode 100644
index 0000000..1114c5e
--- /dev/null
+++ b/CSMath/src/bezier/geom/transform/TDHTranslate.java
@@ -0,0 +1,89 @@
+package bezier.geom.transform;
+
+import bezier.geom.TDHPoint;
+
+/**
+ * A transform that does coordinate translation.
+ * 
+ * @author bjculkin
+ *
+ */
+public class TDHTranslate implements TDHTransform {
+	/**
+	 * The amount to translate the x-coordinate by.
+	 */
+	public final double h;
+	/**
+	 * The amount to translate the y-coordinate by.
+	 */
+	public final double k;
+
+	/**
+	 * Create a new translation transform.
+	 * 
+	 * @param h
+	 *            The amount to translate x by.
+	 * @param k
+	 *            The amount to translate y by.
+	 */
+	public TDHTranslate(double h, double k) {
+		this.h = h;
+		this.k = k;
+	}
+
+	@Override
+	public TDHTransformType type() {
+		return TDHTransformType.TRANSLATE;
+	}
+
+	@Override
+	public TDHPoint transform(TDHPoint punkt) {
+		double x = punkt.x + (punkt.z * h);
+		double y = punkt.y + (punkt.z * k);
+
+		return new TDHPoint(x, y, punkt.z);
+	}
+
+	@Override
+	public double[][] matrix() {
+		return new double[][] { new double[] { 1, 0, 0 }, new double[] { 0, 1, 0 }, new double[] { h, k, 1 } };
+	}
+
+	@Override
+	public TDHTransform invert() {
+		return new TDHTranslate(-h, -k);
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		long temp;
+		temp = Double.doubleToLongBits(h);
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(k);
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		TDHTranslate other = (TDHTranslate) obj;
+		if (Double.doubleToLongBits(h) != Double.doubleToLongBits(other.h))
+			return false;
+		if (Double.doubleToLongBits(k) != Double.doubleToLongBits(other.k))
+			return false;
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		return "TDHTranslate [h=" + h + ", k=" + k + "]";
+	}
+}
+\ No newline at end of file