d@17: (cl:in-package #:amuse)
d@17: 
d@17: ;; Time classes
d@17: 
d@17: (defun make-moment (time)
d@17:   (make-instance 'moment :time time))
d@17: 
d@17: ;; N.B. period should never be constructed directly - it's either
d@17: ;; floating or anchored or some other subclass.
d@17: 
d@17: (defun make-floating-period (interval)
d@17:   (make-instance 'floating-period :interval interval))
d@17: 
d@17: (defun make-anchored-period (onset interval)
d@17:   (make-instance 'anchored-period
d@17: 		 :time onset
d@17: 		 :interval interval))
d@17: 
d@17: ;; Pitch classes (no, not that sort of pitch class)
d@17: 
d@17: (defun make-chromatic-pitch (pitch-number)
d@17:   (make-instance 'chromatic-pitch :number pitch-number))
d@17: 
d@17: (defun make-diatonic-pitch (name accidental octave)
d@17:   (make-instance 'diatonic-pitch
d@17: 		 :name name
d@17: 		 :accidental accidental
d@17: 		 :octave octave))
d@17: 
d@17: (defun make-pitch-interval (span)
d@17:   (make-instance 'pitch-interval :span span))
d@17: 
d@18: ;; Events
d@18: 
d@19: (defun make-chromatic-pitched-event (pitch-number onset duration)
d@19:   (make-instance 'chromatic-pitched-event
d@19: 		 :number pitch-number
d@19: 		 :time onset
d@19: 		 :interval duration))
d@19: 
d@19: (defun make-basic-time-signature (numerator denominator onset duration)
d@19:   (make-instance 'basic-time-signature
d@19: 		 :numerator numerator
d@19: 		 :denominator denominator
d@19: 		 :time onset
d@19: 		 :interval duration))
d@19: 
d@19: (defun make-basic-key-signature (sharp-count onset duration)
d@19:   (make-instance 'basic-key-signature
d@19: 		 :sharp-count sharp-count
d@19: 		 :time onset
d@19: 		 :interval duration))
d@19: 
d@19: (defun make-tempo (bpm onset duration)
d@19:   (make-instance 'tempo
d@19: 		 :bpm bpm
d@19: 		 :time onset
d@19: 		 :interval duration))