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Tutorials/T04-A2Example/src/TriangleADT.py

+## @file TriangleADT.py
+#  @author Sepehr
+#  @brief Provides the Triangle CLass for Perimeter Area and existence of triangle
+#  @date 25 Jan 2018
+
+from pointT import  *
+
+
+##@brief An ADT that respresents a 2D point
+class Triangle:
+
+
+    ## @brief Triangle constructor
+    #  @details Initializes a Triangle with three points a,b,c
+    #  @param a One side of triangle
+    #  @param b One side of triangle
+    #  @param c One side of triangle
+    def __init__(self, p1, p2,p3):
+        self.__a = p1
+        self.__b = p2
+        self.__c = p3
+        self.sides()
+
+    ## @brief Gets the sides
+    #  @return The sides of the triangle
+    def sides(self):
+        self.AB = pointT.dist(self.__b,self.__b)
+        self.AC = pointT.dist(self.__a,self.__c)
+        self.BC = pointT.dist(self.__b,self.__c)
+
+    ## @brief Inequality theorem
+    #  @return the existence of a triangle
+    def inequality_theorem(self):
+        self.sides()
+        if (self.AB +self.AC > self.BC and self.AB+self.BC > self.AC and self.AC+self.BC >self.AB):
+            return True;
+        elif (self.__a.xcoord()==self.__b.xcoord()==self.__c.xcoord() or self.__a.ycoord()==self.__b.ycoord()==self.__c.ycoord()):
+            return False;
+        else:
+            return False;
+
+    ## @brief perimeter
+    #  @return the perimeter of the triangle
+    def perimeter_of_triangle(self):
+        if self.inequality_theorem():
+            return self.AB+self.AC+self.BC
+        else:
+            print("You can't have a triangle with the points")
+
+    ## @brief area
+    #  @return the area of the triangle
+    def area_of_triangle(self):
+        if self.inequality_theorem():
+            P = (self.AB+self.AC+self.BC)/2
+            return sqrt(P*(P-self.AB)*(P-self.AC)*(P-self.BC))
+        else:
+            print("You can't have a triangle with the points")
+
+