Add grid genration function

src/main.ts

@@ -24,8 +24,39 @@ function initGL(canvas: HTMLCanvasElement) {
     gl = <WebGLRenderingContext>gltemp;
 }
 
-function genereateGrid(precision: number) {
+var gridIndices = [];
+var gridVertices = [];
+function genereateGrid(N: number) {
+	for (let j = 0; j <= N; ++j)
+	{
+		for (let i = 0; i <= N; ++i)
+		{
+			//Generate Vertices
+			let x = i / N;
+			let y = j / N;
+			let z = 0;
+            gridVertices.push(x);
+            gridVertices.push(y);
+            gridVertices.push(z);
 
+			//Generate Indices
+			if (i < N && j < N) //Skip edges
+			{
+				let row1 = j * (N + 1);
+				let row2 = (j + 1) * (N + 1);
+
+				// triangle 1
+                gridIndices.push(row1 + i);
+                gridIndices.push(row1 + i + 1);
+                gridIndices.push(row2 + i + 1);
+
+				// triangle 2
+                gridIndices.push(row1 + i);
+                gridIndices.push(row2 + i + 1);
+                gridIndices.push(row2 + i);
+			}
+		}
+	}
 }
 
 /** Init Geomtry for an Triangle */