import math

from ..soundnode import SoundNode

class SawtoothNode(SoundNode):
	
	def __init__(self, freq, room):
	
		super().__init__("saw", room)
		self.freq = freq
		self.harmonics_q = 50
		self.active = False
		self.volume = 0.5
		
	def calc_r_amps(self, t):
		
		if not self.active:
			self.r_amps[t] = dict()
			return
		
		if not t in self.r_amps:
			self.r_amps[t] = dict()
			
		for i in range(0, self.harmonics_q):
			
			freq = self.freq*(i + 1)
			self.r_amps[t][freq] = self.volume / float(i+1)