Add Triangle rendering

Assets/Triangle.cs

@@ -0,0 +1,43 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+public class Triangle : MonoBehaviour {
+    public Color fillColor = Color.blue;
+    
+    private void Start () {
+        // Create Vector2 vertices
+        var vertices2D = new Vector2[] {
+            new Vector2(0,1),
+            new Vector2(0.4f,0),
+            new Vector2(-0.4f,0),
+        };
+
+        var vertices3D = System.Array.ConvertAll<Vector2, Vector3>(vertices2D, v => v);
+ 
+        // Use the triangulator to get indices for creating triangles
+        var triangulator = new Triangulator(vertices2D);
+        var indices =  triangulator.Triangulate();
+		
+        // Generate a color for each vertex
+        var colors = Enumerable.Repeat(fillColor, vertices3D.Length).ToArray();
+
+        // Create the mesh
+        var mesh = new Mesh {
+            vertices = vertices3D,
+            triangles = indices,
+            colors = colors
+        };
+		
+        mesh.RecalculateNormals();
+        mesh.RecalculateBounds();
+ 
+        // Set up game object with mesh;
+        var meshRenderer = gameObject.AddComponent<MeshRenderer>();
+        meshRenderer.material = (Material) Resources.Load("BoidMaterial");
+		
+        var filter = gameObject.AddComponent<MeshFilter>();
+        filter.mesh = mesh;
+    }
+}