Added VRML conversion of 'translation' and 'center' to mm on read and 0.1 inch on write

3d-viewer/3d_cache/sg/scenegraph.cpp

@@ -260,7 +260,13 @@ bool SCENEGRAPH::WriteVRML( std::ofstream& aFile, bool aReuseFlag )
         aFile << " Transform {\n";
     }
 
-    S3D::FormatPoint( tmp, center );
+    // convert center to 1VRML unit = 0.1 inch
+    SGPOINT pt = center;
+    pt.x /= 2.54;
+    pt.y /= 2.54;
+    pt.z /= 2.54;
+
+    S3D::FormatPoint( tmp, pt );
     aFile << "  center " << tmp << "\n";
     S3D::FormatOrientation( tmp, rotation_axis, rotation_angle );
     aFile << "  rotation " << tmp << "\n";
@@ -268,7 +274,13 @@ bool SCENEGRAPH::WriteVRML( std::ofstream& aFile, bool aReuseFlag )
     aFile << "  scale " << tmp << "\n";
     S3D::FormatOrientation( tmp, scale_axis, scale_angle );
     aFile << "  scaleOrientation " << tmp << "\n";
-    S3D::FormatPoint( tmp, translation );
+
+    // convert translation to 1VRML unit = 0.1 inch
+    pt = translation;
+    pt.x /= 2.54;
+    pt.y /= 2.54;
+    pt.z /= 2.54;
+    S3D::FormatPoint( tmp, pt );
     aFile << "  translation " << tmp << "\n";
 
     aFile << " children [\n";

plugins/3d/vrml/v1/vrml1_transform.cpp

@@ -173,6 +173,11 @@ bool WRL1TRANSFORM::Read( WRLPROC& proc, WRL1BASE* aTopNode )
 
                 return false;
             }
+
+            // convert from 1 VRML Unit = 0.1 inch to 1 VRML Unit = 1 mm
+            center.x *= 2.54;
+            center.y *= 2.54;
+            center.z *= 2.54;
         }
         else if( !glob.compare( "rotation" ) )
         {
@@ -233,6 +238,11 @@ bool WRL1TRANSFORM::Read( WRLPROC& proc, WRL1BASE* aTopNode )
 
                 return false;
             }
+
+            // convert from 1 VRML Unit = 0.1 inch to 1 VRML Unit = 1 mm
+            translation.x *= 2.54;
+            translation.y *= 2.54;
+            translation.z *= 2.54;
         }
         else
         {

plugins/3d/vrml/v2/vrml2_transform.cpp

@@ -188,6 +188,11 @@ bool WRL2TRANSFORM::Read( WRLPROC& proc, WRL2BASE* aTopNode )
 
                 return false;
             }
+
+            // convert from 1 VRML Unit = 0.1 inch to 1 VRML Unit = 1 mm
+            center.x *= 2.54;
+            center.y *= 2.54;
+            center.z *= 2.54;
         }
         else if( !glob.compare( "rotation" ) )
         {
@@ -248,6 +253,11 @@ bool WRL2TRANSFORM::Read( WRLPROC& proc, WRL2BASE* aTopNode )
 
                 return false;
             }
+
+            // convert from 1 VRML Unit = 0.1 inch to 1 VRML Unit = 1 mm
+            translation.x *= 2.54;
+            translation.y *= 2.54;
+            translation.z *= 2.54;
         }
         else if( !glob.compare( "children" ) )
         {