adding linear helper

Helpers/LinearHelper.cs

@@ -0,0 +1,58 @@
+using UnityEngine;
+
+namespace Arcadia {
+
+	public class LinearHelper{
+
+		public static Matrix4x4 matrix (
+			float a, float b, float c, float d,
+			float e, float f, float g, float h,
+			float i, float j, float k, float l,
+			float m, float n, float o, float p){
+			var mtrx = new Matrix4x4();
+			mtrx[0, 0] = a;
+			mtrx[0, 1] = b;
+			mtrx[0, 2] = c;
+			mtrx[0, 3] = d;
+			mtrx[1, 0] = e;
+			mtrx[1, 1] = f;
+			mtrx[1, 2] = g;
+			mtrx[1, 3] = h;
+			mtrx[2, 0] = i;
+			mtrx[2, 1] = j;
+			mtrx[2, 2] = k;
+			mtrx[2, 3] = l;
+			mtrx[3, 0] = m;
+			mtrx[3, 1] = n;
+			mtrx[3, 2] = o;
+			mtrx[3, 3] = p;
+			return mtrx;
+		}
+
+		public static Matrix4x4 matrixByRows (
+			Vector4 a, Vector4 b, Vector4 c, Vector4 d){
+			var mtrx = new Matrix4x4();
+			mtrx.SetRow(0, a);
+			mtrx.SetRow(1, b);
+			mtrx.SetRow(2, c);
+			mtrx.SetRow(3, d);
+			return mtrx;
+		}
+
+		public static Matrix4x4 matrixPutColumn(
+			Matrix4x4 m, int colInx, Vector4 col){
+			m.SetColumn(colInx, col);
+			return m;
+		}
+
+		public static Matrix4x4 matrixPutRow(
+			Matrix4x4 m, int rowInx, Vector4 row){
+			m.SetRow(rowInx, row);
+			return m;
+		}
+
+
+
+	}
+
+}