From 05491528318e3cd256738d174fed13bc91132787 Mon Sep 17 00:00:00 2001
From: "jussi.koskela" <jussi.koskela@ac1ea38d-2e2b-0410-8846-a27921b304fc>
Date: Tue, 24 Feb 2015 13:35:10 +0000
Subject: [PATCH] (fixes #5681) Vector*matrix not implemented

git-svn-id: https://www.simantics.org/svn/simantics/sysdyn/trunk@30972 ac1ea38d-2e2b-0410-8846-a27921b304fc
---
 .../src/fi/semantum/sysdyn/solver/Array.java       | 14 ++++++++++++++
 .../fi/semantum/sysdyn/solver/Multiplication.java  |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Array.java b/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Array.java
index cb16d4b9..3f9693c0 100644
--- a/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Array.java
+++ b/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Array.java
@@ -327,6 +327,20 @@ public class Array implements IExpression {
 		return result;
 	}
 
+	/*
+	 * Other array is matrix (this is vector)
+	 */
+	public Array vectorMulMatrix(Array other) {
+		Array result = new Array();
+		Array transposed = other.transposed();
+		for(Object o : transposed.elements) {
+			// Objects are columns
+			Array a = (Array)o;
+			result.addElement(this.inner(a));
+		}
+		return result;
+	}
+	
 	/*
 	 * Other array is vector (this is matrix)
 	 */
diff --git a/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Multiplication.java b/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Multiplication.java
index 97791824..ad6f3f07 100644
--- a/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Multiplication.java
+++ b/fi.semantum.sysdyn.solver/src/fi/semantum/sysdyn/solver/Multiplication.java
@@ -40,6 +40,8 @@ public class Multiplication implements IExpression {
 			Array ra = (Array)right;
 			if(la.isVector && ra.isVector) {
 				return la.inner(ra);
+			} else if(la.isVector) {
+				return la.vectorMulMatrix(ra);
 			} else if(ra.isVector) {
 				return la.matrixMulVector(ra);
 			} else {
-- 
2.47.1