added trace line

source/Triangle3d.cpp

@@ -0,0 +1,36 @@
+#include "omath/Triangle3d.hpp"
+
+
+namespace omath
+{
+    Triangle3d::Triangle3d(const Vector3 &vertex1, const Vector3 &vertex2, const Vector3 &vertex3)
+        : m_vertex1(vertex1), m_vertex2(vertex2), m_vertex3(vertex3)
+    {
+
+    }
+
+    Vector3 Triangle3d::CalculateNormal() const
+    {
+        return (m_vertex1 - m_vertex2).Cross(m_vertex3 - m_vertex1).Normalized();
+    }
+
+    float Triangle3d::SideALength() const
+    {
+        return m_vertex1.DistTo(m_vertex2);
+    }
+
+    float Triangle3d::SideBLength() const
+    {
+        return m_vertex3.DistTo(m_vertex2);
+    }
+
+    Vector3 Triangle3d::SideAVector() const
+    {
+        return m_vertex1 - m_vertex2;
+    }
+
+    Vector3 Triangle3d::SideBVector() const
+    {
+        return m_vertex3 - m_vertex2;
+    }
+}