Add distance vs time graph

eos/graph/fitDistanceTime.py

@@ -0,0 +1,26 @@
+import math
+from logbook import Logger
+
+from eos.graph import Graph
+
+
+pyfalog = Logger(__name__)
+
+
+class FitDistanceTimeGraph(Graph):
+
+    defaults = {"time": 0}
+
+    def __init__(self, fit, data=None):
+        Graph.__init__(self, fit, self.calcDistance, data if data is not None else self.defaults)
+        self.fit = fit
+
+    def calcDistance(self, data):
+        time = data["time"]
+        maxSpeed = self.fit.ship.getModifiedItemAttr('maxVelocity')
+        mass = self.fit.ship.getModifiedItemAttr('mass')
+        agility = self.fit.ship.getModifiedItemAttr('agility')
+        # Definite integral of:
+        # https://wiki.eveuniversity.org/Acceleration#Mathematics_and_formulae
+        distance = maxSpeed * time + (maxSpeed * agility * mass * math.exp((-time * 1000000) / (agility * mass)) / 1000000)
+        return distance

eos/graph/fitSpeedTime.py

@@ -21,5 +21,5 @@ class FitSpeedTimeGraph(Graph):
         mass = self.fit.ship.getModifiedItemAttr('mass')
         agility = self.fit.ship.getModifiedItemAttr('agility')
         # https://wiki.eveuniversity.org/Acceleration#Mathematics_and_formulae
-        speed = maxSpeed * (1 - math.exp((-time * 10 ** 6) / (agility * mass)))
+        speed = maxSpeed * (1 - math.exp((-time * 1000000) / (agility * mass)))
         return speed