quaternion-java/fr/alnotz/IsQuaternion.java

package fr.alnotz;

public interface IsQuaternion {
    double getS();
    double getI();
    double getJ();
    double getK();
    void setS(double s);
    void setI(double i);
    void setJ(double j);
    void setK(double k);
    IsQuaternion plus(IsQuaternion quaternion);
    IsQuaternion times(IsQuaternion quaternion);
    IsQuaternion conjugate();
    boolean equals(IsQuaternion quaternion);
    String toString();
}