more stuff

Shapes/Triangle.cs

@@ -1,34 +1,90 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Drawing;
+using System.Linq;
 
 namespace Shapes
 {
     public class Triangle : Shape
     {
-        public override Color Fill { get; set; }
-        public override Color Color { get; set; }
-        public override double Width { get; }
+        public sealed override List<Point> Points { get; }
+
         public override double Height { get; }
 
+        public override double Width { get; }
+
+        public sealed override Point CenterPoint { get; }
+        public List<Line> Lines { get; }
+
         public Triangle(Point point1, Point point2, Point point3)
         {
+            Points = new List<Point>();
+            Lines = new List<Line>();
             
+            Points.Add(point1);
+            Points.Add(point2);
+            Points.Add(point3);
+            
+            Lines.Add(new Line(point1, point2));
+            Lines.Add(new Line(point2, point3));
+            Lines.Add(new Line(point3, point1));
+
+            Point centerOfLine3 = ((point1 - point3) / 2) + point1;
+            var centerTriangle = ((point1 - centerOfLine3) / 2) + point1;
+            
+            
+            CenterPoint = centerTriangle;
+
+            Height = new Line(point1, centerOfLine3).ComputeLength();
+            Width = new Line(point1, point2).ComputeLength();
+
+
         }
 
         public Triangle(double x1, double y1, double x2, double y2, double x3, double y3)
         {
+            var point1 = new Point(x1, y1);
+            var point2 = new Point(x2, y2);
+            var point3 = new Point(x3, y3);
+
             
+            Points = new List<Point>();
+            Lines = new List<Line>();
+            
+            Points.Add(point1);
+            Points.Add(point2);
+            Points.Add(point3);
+            
+            Lines.Add(new Line(point1, point2));
+            Lines.Add(new Line(point2, point3));
+            Lines.Add(new Line(point3, point1));
+            
+            Point centerOfLine3 = ((point1 - point3) / 2) + point1;
+            var centerTriangle = ((point1 - centerOfLine3) / 2) + point1;
+
+            CenterPoint = centerTriangle;
         }
         
         public override double ComputeArea()
         {
-            throw new NotImplementedException();
+
+            var a = Lines[0].ComputeLength();
+            var b = Lines[1].ComputeLength();
+            var c = Lines[2].ComputeLength();
+
+            var p = (a + b + c) / 2;
+
+            return Math.Sqrt(p * (p - a) * (p - b) * (p - c));
         }
 
         public override void Scale(double scaleFactor)
         {
-            throw new NotImplementedException();
+            foreach (var point in Points)
+            {
+                point.X *= scaleFactor;
+                point.Y *= scaleFactor;
+            }
         }
     }
 }