From 89b4ca088d7ee9c7d077f198043f273a78030bd0 Mon Sep 17 00:00:00 2001
From: "Eugeniy E. Mikhailov" <evgmik@gmail.com>
Date: Sat, 3 Apr 2021 22:44:52 -0400
Subject: added ramp generator

---
 panel.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

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=[]):
-- 
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