Draft: Prepared support for dimensions in new DXF importer

src/Mod/Draft/App/DraftDxf.cpp

@@ -171,6 +171,12 @@ void DraftDxfRead::OnReadInsert(const double* point, const double* scale, const
 }
 
 
+void DraftDxfRead::OnReadDimension(const double* s, const double* e, const double* point, double rotation)
+{
+    std::cout << "Dimension: " << std::endl;
+}
+
+
 void DraftDxfRead::AddObject(Part::TopoShape *shape)
 {
     //std::cout << "layer:" << LayerName() << std::endl;

src/Mod/Draft/App/DraftDxf.h

@@ -43,6 +43,7 @@ namespace DraftUtils
         void OnReadEllipse(const double* c, double major_radius, double minor_radius, double rotation, double start_angle, double end_angle, bool dir);
         void OnReadSpline(struct SplineData& sd);
         void OnReadInsert(const double* point, const double* scale, const char* name, double rotation);
+        void OnReadDimension(const double* s, const double* e, const double* point, double rotation);
         void AddGraphics() const;
     
         // FreeCAD-specific functions

src/Mod/Draft/App/dxf.cpp

@@ -1407,6 +1407,108 @@ bool CDxfRead::ReadInsert()
 }
 
 
+bool CDxfRead::ReadDimension()
+{
+    double s[3]; // startpoint
+    double e[3]; // endpoint
+    double p[3]; // dimpoint
+    double rot = 0.0; // rotation
+
+    while(!((*m_ifs).eof()))
+    {
+        get_line();
+        int n;
+        if(sscanf(m_str, "%d", &n) != 1)
+        {
+            printf("CDxfRead::ReadInsert() Failed to read integer from '%s'\n", m_str);
+            return false;
+        }
+        std::istringstream ss;
+        ss.imbue(std::locale("C"));
+        switch(n){
+            case 0: 
+                // next item found
+                DerefACI();
+                OnReadDimension(s, e, p, rot * Pi/180);
+                return(true);
+            case 8: 
+                // Layer name follows
+                get_line();
+                strcpy(m_layer_name, m_str);
+                break;
+            case 12:
+                // start x
+                get_line();
+                ss.str(m_str); ss >> s[0]; s[0] = mm(s[0]); if(ss.fail()) return false;
+                break;
+            case 22:
+                // start y
+                get_line();
+                ss.str(m_str); ss >> s[1]; s[1] = mm(s[1]); if(ss.fail()) return false;
+                break;
+            case 32:
+                // start z
+                get_line();
+                ss.str(m_str); ss >> s[2]; s[2] = mm(s[2]); if(ss.fail()) return false;
+                break;
+            case 13:
+                // end x
+                get_line();
+                ss.str(m_str); ss >> e[0]; e[0] = mm(e[0]); if(ss.fail()) return false;
+                break;
+            case 23:
+                // end y
+                get_line();
+                ss.str(m_str); ss >> e[1]; e[1] = mm(e[1]); if(ss.fail()) return false;
+                break;
+            case 33:
+                // end z
+                get_line();
+                ss.str(m_str); ss >> e[2]; e[2] = mm(e[2]); if(ss.fail()) return false;
+                break;
+            case 14:
+                // dimline x
+                get_line();
+                ss.str(m_str); ss >> p[0]; p[0] = mm(p[0]); if(ss.fail()) return false;
+                break;
+            case 24:
+                // dimline y
+                get_line();
+                ss.str(m_str); ss >> p[1]; p[1] = mm(p[1]); if(ss.fail()) return false;
+                break;
+            case 34:
+                // dimline z
+                get_line();
+                ss.str(m_str); ss >> p[2]; p[2] = mm(p[2]); if(ss.fail()) return false;
+                break;
+            case 50:
+                // rotation
+                get_line();
+                ss.str(m_str); ss >> rot; if(ss.fail()) return false;
+                break;
+            case 62:
+                // color index
+                get_line();
+                ss.str(m_str); ss >> m_aci; if(ss.fail()) return false;
+                break;
+            case 100:
+            case 39:
+            case 210:
+            case 220:
+            case 230:
+                // skip the next line
+                get_line();
+                break;
+            default:
+                // skip the next line
+                get_line();
+                break;
+        }
+    }
+    return false;
+}
+
+
 void CDxfRead::get_line()
 {
     if (m_unused_line[0] != '\0')

src/Mod/Draft/App/dxf.h

@@ -125,6 +125,7 @@ private:
     void OnReadCircle(const double* c, double radius, bool hidden);
     void OnReadEllipse(const double* c, const double* m, double ratio, double start_angle, double end_angle);
     bool ReadInsert();
+    bool ReadDimension();
 
     void get_line();
     void put_line(const char *value);
@@ -152,6 +153,7 @@ public:
     virtual void OnReadEllipse(const double* c, double major_radius, double minor_radius, double rotation, double start_angle, double end_angle, bool dir){}
     virtual void OnReadSpline(struct SplineData& sd){}
     virtual void OnReadInsert(const double* point, const double* scale, const char* name, double rotation){}
+    virtual void OnReadDimension(const double* s, const double* e, const double* point, double rotation){}
     virtual void AddGraphics() const { }
 
     std::string LayerName() const;