+ void nextColor();
+
+ /**
+ * Decrement current index to color table
+ */
+ void prevColor();
+
+ /**
+ * Decrement segment diameter
+ */
+ void decrementDiameter();
+
+
+ /**
+ * Set current color index
+ * @param index the color index
+ */
+ void setColorIndex(int index);
+
+ /**
+ * Set current segment diameter
+ * @param diameter the diameter
+ */
+ void setDiameter(double diameter);
+
+ /**
+ * Set segment diameter factor
+ * @param diameter the diameter factor
+ */
+ void setDiameterFactor(double diameterFactor);
+
+
+ /**
+ * Get current color index
+ * @return color index
+ */
+ int getColorIndex();
+
+ /**
+ * Get current segment diameter
+ * @return the diameter
+ */
+ double getDiameter();
+
+ /**
+ * Get segment diameter factor
+ * @return the diameter factor
+ */
+ double getDiameterFactor();