From f004858fe51aef50ddf7cd792941605b339720e8 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Tue, 23 Oct 2018 19:38:03 +0200
Subject: [PATCH] implement a direct way to set single or double precision when
 writing/reading properties using floating point numbers

---
 src/App/Property.h           | 10 ++++++++++
 src/App/PropertyGeo.cpp      |  8 ++++----
 src/App/PropertyStandard.cpp |  4 ++--
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/App/Property.h b/src/App/Property.h
index 83727038f4..adfabd2de0 100644
--- a/src/App/Property.h
+++ b/src/App/Property.h
@@ -62,6 +62,7 @@ public:
         Immutable = 1, // can't modify property
         ReadOnly = 2, // for property editor
         Hidden = 3, // for property editor
+        Single = 4, // for save/load of floating point numbers
         User1 = 28, // user-defined status
         User2 = 29, // user-defined status
         User3 = 30, // user-defined status
@@ -143,6 +144,15 @@ public:
     inline bool isReadOnly() const {
         return testStatus(App::Property::ReadOnly);
     }
+    /// Sets precision of properties using floating point
+    /// numners to single, the default is double.
+    void setSinglePrecision(bool single) {
+        setStatus(App::Property::Single, single);
+    }
+    /// Gets precision of properties using floating point numbers
+    inline bool isSinglePrecision() const {
+        return testStatus(App::Property::Single);
+    }
     //@}
 
     /// Returns a new copy of the property (mainly for Undo/Redo and transactions)
diff --git a/src/App/PropertyGeo.cpp b/src/App/PropertyGeo.cpp
index 9033a077ec..ed09541ff2 100644
--- a/src/App/PropertyGeo.cpp
+++ b/src/App/PropertyGeo.cpp
@@ -418,7 +418,7 @@ void PropertyVectorList::SaveDocFile (Base::Writer &writer) const
     Base::OutputStream str(writer.Stream());
     uint32_t uCt = (uint32_t)getSize();
     str << uCt;
-    if (writer.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<Base::Vector3d>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
             str << it->x << it->y << it->z;
         }
@@ -439,7 +439,7 @@ void PropertyVectorList::RestoreDocFile(Base::Reader &reader)
     uint32_t uCt=0;
     str >> uCt;
     std::vector<Base::Vector3d> values(uCt);
-    if (reader.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<Base::Vector3d>::iterator it = values.begin(); it != values.end(); ++it) {
             str >> it->x >> it->y >> it->z;
         }
@@ -917,7 +917,7 @@ void PropertyPlacementList::SaveDocFile (Base::Writer &writer) const
     Base::OutputStream str(writer.Stream());
     uint32_t uCt = (uint32_t)getSize();
     str << uCt;
-    if (writer.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<Base::Placement>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
             str << it->getPosition().x << it->getPosition().y << it->getPosition().z
                 << it->getRotation()[0] << it->getRotation()[1] << it->getRotation()[2] << it->getRotation()[3] ;
@@ -943,7 +943,7 @@ void PropertyPlacementList::RestoreDocFile(Base::Reader &reader)
     uint32_t uCt=0;
     str >> uCt;
     std::vector<Base::Placement> values(uCt);
-    if (reader.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<Base::Placement>::iterator it = values.begin(); it != values.end(); ++it) {
             Base::Vector3d pos;
             double q0, q1, q2, q3;
diff --git a/src/App/PropertyStandard.cpp b/src/App/PropertyStandard.cpp
index c995e34a23..1ea44cead0 100644
--- a/src/App/PropertyStandard.cpp
+++ b/src/App/PropertyStandard.cpp
@@ -1380,7 +1380,7 @@ void PropertyFloatList::SaveDocFile (Base::Writer &writer) const
     Base::OutputStream str(writer.Stream());
     uint32_t uCt = (uint32_t)getSize();
     str << uCt;
-    if (writer.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<double>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
             str << *it;
         }
@@ -1399,7 +1399,7 @@ void PropertyFloatList::RestoreDocFile(Base::Reader &reader)
     uint32_t uCt=0;
     str >> uCt;
     std::vector<double> values(uCt);
-    if (reader.getFileVersion() > 0) {
+    if (!isSinglePrecision()) {
         for (std::vector<double>::iterator it = values.begin(); it != values.end(); ++it) {
             str >> *it;
         }