From 5fdb8554aa59432924c6cf2cf4e8c178c5856deb Mon Sep 17 00:00:00 2001
From: student <student@localhost>
Date: Wed, 11 Apr 2018 17:06:20 -0400
Subject: Update

---
 CSMath/src/bezier/geom/Matrix.java | 55 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 CSMath/src/bezier/geom/Matrix.java

(limited to 'CSMath/src/bezier/geom/Matrix.java')

diff --git a/CSMath/src/bezier/geom/Matrix.java b/CSMath/src/bezier/geom/Matrix.java
new file mode 100644
index 0000000..a728a02
--- /dev/null
+++ b/CSMath/src/bezier/geom/Matrix.java
@@ -0,0 +1,55 @@
+package bezier.geom;
+
+public class Matrix {
+	public final double[][] mat;
+
+	public Matrix(double[][] mat) {
+		this.mat = mat;
+	}
+	
+	public Matrix add(Matrix m) {
+		return add(m.mat);
+	}
+	
+	public double[] scalarMultiply(double[] vec) {
+		double[] ret = new double[vec.length];
+		
+		for(int i = 0; i < mat[0].length; i++) {
+			for(int j = 0; j < mat.length; j++) {
+				ret[i] += mat[i][j] * vec[j];
+			}
+		}
+		
+		return ret;
+	}
+	
+	public Matrix add(double[][] matr) {
+		double[][] ret = new double[mat.length][mat[0].length];
+		
+		for(int i = 0; i < mat.length; i++) {
+			for(int j = 0; j < mat[0].length; j++) {
+				ret[i][j] = mat[i][j] + matr[i][j];
+			}
+		}
+		
+		return new Matrix(ret);
+	}
+	
+	public Matrix multiply(Matrix m) {
+		return multiply(m.mat);
+	}
+	
+	public Matrix multiply(double[][] matr) {
+		double[][] ret = new double[mat.length][matr[0].length];
+
+		for (int i = 0; i < mat.length; i++) {
+			for (int j = 0; j < matr[0].length; j++) {
+				for (int k = 0; k < matr.length; k++) {
+					ret[i][j] += mat[i][k] * matr[k][j];
+				}
+			}
+		}
+
+		return new Matrix(ret);
+	}
+}
-- 
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