From 366c25888c15abb0f6b39e10a266297afceef7f7 Mon Sep 17 00:00:00 2001
From: Michael Kirsch <mkirsch.git@gmail.com>
Date: Wed, 3 Jul 2019 22:15:26 +0200
Subject: [PATCH] add comparision overloads for tests

---
 xs/src/libslic3r/TransformationMatrix.cpp | 19 +++++++++++++++++++
 xs/src/libslic3r/TransformationMatrix.hpp |  3 +++
 xs/xsp/TransformationMatrix.xsp           |  3 +++
 3 files changed, 25 insertions(+)

diff --git a/xs/src/libslic3r/TransformationMatrix.cpp b/xs/src/libslic3r/TransformationMatrix.cpp
index 93f6d7a42..221654a9b 100644
--- a/xs/src/libslic3r/TransformationMatrix.cpp
+++ b/xs/src/libslic3r/TransformationMatrix.cpp
@@ -57,6 +57,25 @@ void TransformationMatrix::swap(TransformationMatrix &other)
     std::swap(this->m33, other.m33); std::swap(this->m34, other.m34);
 }
 
+bool TransformationMatrix::operator==(const TransformationMatrix &other) const
+{
+    double eps = 1e-14; 
+    bool is_equal = true;
+    is_equal &= (abs(this->m11 - other.m11) < eps);
+    is_equal &= (abs(this->m12 - other.m12) < eps);
+    is_equal &= (abs(this->m13 - other.m13) < eps);
+    is_equal &= (abs(this->m14 - other.m14) < eps);
+    is_equal &= (abs(this->m21 - other.m21) < eps);
+    is_equal &= (abs(this->m22 - other.m22) < eps);
+    is_equal &= (abs(this->m23 - other.m23) < eps);
+    is_equal &= (abs(this->m24 - other.m24) < eps);
+    is_equal &= (abs(this->m31 - other.m31) < eps);
+    is_equal &= (abs(this->m32 - other.m32) < eps);
+    is_equal &= (abs(this->m33 - other.m33) < eps);
+    is_equal &= (abs(this->m34 - other.m34) < eps);
+    return is_equal;
+}
+
 std::vector<double> TransformationMatrix::matrix3x4f() const
 {
     std::vector<double> out_arr(0);
diff --git a/xs/src/libslic3r/TransformationMatrix.hpp b/xs/src/libslic3r/TransformationMatrix.hpp
index f5e87fd46..6cf4b9ff2 100644
--- a/xs/src/libslic3r/TransformationMatrix.hpp
+++ b/xs/src/libslic3r/TransformationMatrix.hpp
@@ -22,6 +22,9 @@ public:
     TransformationMatrix& operator= (TransformationMatrix other);
     void swap(TransformationMatrix &other);
 
+    bool operator== (const TransformationMatrix &other) const;
+    bool operator!= (const TransformationMatrix &other) const { return !(*this == other); };
+
     /// matrix entries 
     double m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34;
 
diff --git a/xs/xsp/TransformationMatrix.xsp b/xs/xsp/TransformationMatrix.xsp
index 182655782..24c792765 100644
--- a/xs/xsp/TransformationMatrix.xsp
+++ b/xs/xsp/TransformationMatrix.xsp
@@ -17,6 +17,9 @@
     Clone<TransformationMatrix> inverse()
         %code{% RETVAL = THIS->inverse(); %};
 
+    bool equal(TransformationMatrix* other)
+        %code{% RETVAL = (*THIS == *other); %};
+
     double determinante();
 
     double m11()