1 files changed, 15 insertions, 0 deletions
diff --git a/panel.py b/panel.py
index e9cafe3..6b55681 100644
--- a/panel.py
+++ b/panel.py
@@ -27,6 +27,21 @@ class SinGen:
             sweeper = self.sweeper
         return self.ampl * np.sin( 2*np.pi*sweeper.getRelPos()) + self.offset
 
+class RampGen:
+    # monotonically goes from start to stop, at final point move to start
+    def __init__(self, start=0, stop=0, sweeper=None):
+        self.start = start
+        self.stop = stop
+        self.sweeper = sweeper
+
+    def getValue(self, sweeper=None):
+        if sweeper is None and self.sweeper is None:
+            print("Error: generator needs sweeper")
+            return 0
+        if sweeper is None:
+            sweeper = self.sweeper
+        return self.start +  sweeper.getRelPos()*(self.stop - self.start)
+
 
 class Sweeper:
     def __init__(self, widget, start, stop, Npoints, SweepTime, onTicCallbacks=[]):