Added Rasterizer and first OpenGL project

2016-04-21 10:32:17 +02:00
parent 77199dc094
commit b98c9a979f
16 changed files with 1294 additions and 0 deletions
@@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Rasterizer
+{
+	struct Matrix
+	{
+		float[,] data;
+
+		private Matrix(int size = 4)
+		{
+			data = new float[size, size];
+		}
+
+		public static Matrix identity()
+		{
+			Matrix m = new Matrix(4);
+			m.data[0,0] = 1;
+			m.data[1,1] = 1;
+			m.data[2,2] = 1;
+			m.data[3,3] = 1;
+			return m;
+		}
+
+		public static Matrix perspective(float fovy, float aspect, float zNear, float zFar)
+		{
+            Matrix m = new Matrix(4);
+
+            m.data[0, 0] = (float)((1 / Math.Tan(fovy / 2)) / aspect);
+            m.data[1, 1] = (float)(1 / Math.Tan(fovy / 2));
+            m.data[2, 2] = (float)(zFar/(zFar - zNear));
+            m.data[2, 3] = -1;
+            m.data[3, 2] = (float)((zNear * zFar) / (zFar - zNear) );
+
+            return m;
+        }
+
+		public static Matrix rotation(float angle, Vector3 axis)
+		{
+            Matrix m = Matrix.identity();
+
+            float c = (float) Math.Cos((double) angle);
+            float s = (float) Math.Sin((double) angle);
+
+            m.data[0, 0] = (float) Math.Pow(axis.x, 2) * (1 - c) + c;
+            m.data[0, 1] = axis.x * axis.y * (1 - c) - axis.z * s;
+            m.data[0, 2] = axis.x * axis.z * (1 - c) - axis.y * s;
+            m.data[1, 0] = axis.x * axis.y * (1 - c) + axis.z * s;
+            m.data[1, 1] = (float)Math.Pow(axis.y, 2) * (1 - c) + c;
+            m.data[1, 2] = axis.y * axis.z * (1 - c) + axis.x * s;
+            m.data[2, 0] = axis.x * axis.z * (1 - c) + axis.y * s;
+            m.data[2, 1] = axis.y * axis.z * (1 - c) - axis.x * s;
+            m.data[2, 2] = (float)Math.Pow(axis.z, 2) * (1 - c) + c;
+
+            return m;
+        }
+		public static Matrix translate(Vector3 offset)
+		{
+            Matrix m = Matrix.identity();
+
+            for(int i = 0; i < 3; i++)
+            {
+                m.data[i, 3] = offset.data[i];
+            }
+
+            return m;
+        }
+
+		public static Vector3 operator * (Matrix mat, Vector3 vec)
+		{
+            Vector3 v = new Vector3(0,0,0);
+
+            for(int i = 0; i < 4; i++)
+            {
+                v.data[i] = 0;
+
+                for(int p = 0; p < 4; p++)
+                {
+                    v.data[i] += mat.data[i, p] * vec.data[p];
+                }
+            }
+
+            return v;
+		}
+		public static Matrix operator * (Matrix mat1, Matrix mat2)
+		{
+            Matrix m = Matrix.identity();
+
+            for (int i = 0; i < 4; i++)
+            {
+                for (int p = 0; p < 4; p++)
+                {
+                    m.data[i, p] = 0;
+
+                    for (int q = 0; q < 4; q++)
+                    {
+                        m.data[i, p] += mat1.data[i, q] * mat2.data[q, p];
+                    }
+                }
+            }
+
+            return m;
+        }
+	}
+}