add required functions

xs/src/libslic3r/TransformationMatrix.cpp

@@ -111,6 +111,31 @@ void TransformationMatrix::translate(double x, double y, double z)
     this->multiplyLeft(mat);
 }
 
+void TransformationMatrix::translateXY(Slic3r::Pointf position)
+{
+    TransformationMatrix mat = mat_translation(position.x, position.y, 0.0);
+    this->multiplyLeft(mat);
+}
+
+void TransformationMatrix::setTranslation(double x, double y, double z)
+{
+    this->m14 = x;
+    this->m24 = y;
+    this->m34 = z;
+}
+
+void TransformationMatrix::setXYtranslation(double x, double y)
+{
+    this->m14 = x;
+    this->m24 = y;
+}
+
+void TransformationMatrix::setXYtranslation(Slic3r::Pointf position)
+{
+    this->m14 = position.x;
+    this->m24 = position.y;
+}
+
 void TransformationMatrix::scale(double factor)
 {
     this->scale(factor, factor, factor);

xs/src/libslic3r/TransformationMatrix.hpp

@@ -37,6 +37,17 @@ public:
 
     /// Perform Translation
     void translate(double x, double y, double z);
+    void translateXY(Slic3r::Pointf position);
+
+    /// Set translation vector directly
+    void setTranslation(double x, double y, double z);
+
+    /// Set X and Y components of translation directly
+    void setXYtranslation(double x, double y);
+    void setXYtranslation(Slic3r::Pointf position);
+
+    /// Set Z component of translation directly
+    void setZtranslation(double z);
 
     /// Perform uniform scale
     void scale(double factor);

xs/src/libslic3r/TriangleMesh.cpp

@@ -280,6 +280,12 @@ TriangleMesh::WriteOBJFile(const std::string &output_file) const {
     #endif
 }
 
+void TriangleMesh::transform(const TransformationMatrix &trafo)
+{
+    stl_transform(&this->stl, trafo.matrix3x4f);
+    stl_invalidate_shared_vertices(&this->stl);
+}
+
 void TriangleMesh::scale(float factor)
 {
     stl_scale(&(this->stl), factor);

xs/src/libslic3r/TriangleMesh.hpp

@@ -10,6 +10,7 @@
 #include "Point.hpp"
 #include "Polygon.hpp"
 #include "ExPolygon.hpp"
+#include "TransformationMatrix.hpp"
 
 namespace Slic3r {
 
@@ -61,6 +62,9 @@ class TriangleMesh
     float volume();
     bool is_manifold() const;
     void WriteOBJFile(const std::string &output_file) const;
+
+    void transform(const TransformationMatrix &trafo);
+
     void scale(float factor);
     void scale(const Pointf3 &versor);