commit all existing code

stimuli/AbstractStimulus.py

@@ -0,0 +1,8 @@
+
+class AbstractStimulus:
+
+    def value_at_time_in_ms(self, time_point):
+        raise NotImplementedError("This is an abstract class!")
+
+    def value_at_time_in_s(self, time_point):
+        raise NotImplementedError("This is an abstract class!")

stimuli/StepStimulus.py

@@ -0,0 +1,26 @@
+
+from stimuli.AbstractStimulus import AbstractStimulus
+
+
+class StepStimulus(AbstractStimulus):
+
+    def __init__(self, start, duration, value, base_value=0, seconds=True):
+        self.start = 0
+        self.duration = 0
+        self.base_value = base_value
+        self.value = value
+        if seconds:
+            self.start = start
+            self.duration = duration
+        else:
+            self.start = start / 1000
+            self.duration = duration / 1000
+
+    def value_at_time_in_ms(self, time_point):
+        return self.value_at_time_in_s(time_point/1000)
+
+    def value_at_time_in_s(self, time_point):
+        if self.start <= time_point <= self.start + self.duration:
+            return self.value
+        else:
+            return self.base_value