From 1a4903cfcc3cf1d3a5408c1699f5781ca32f0add Mon Sep 17 00:00:00 2001
From: nds <natalia.donis@opencascade.com>
Date: Tue, 24 Jun 2014 16:58:41 +0400
Subject: [PATCH] refs #80 - Sketch base GUI: create/draw point, circle and arc

Move for line constraint. Do not build line preview until both points are initialized.
---
 src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp |  7 +++----
 src/SketchPlugin/SketchPlugin_ConstraintLength.cpp   | 11 +++++++++++
 src/SketchPlugin/SketchPlugin_ConstraintLength.h     |  5 +++++
 src/SketchPlugin/SketchPlugin_Line.cpp               | 12 +++++++-----
 4 files changed, 26 insertions(+), 9 deletions(-)

diff --git a/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp b/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
index d6e2b0075..1ff92e3fd 100644
--- a/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
+++ b/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
@@ -31,16 +31,15 @@ void SketchPlugin_ConstraintDistance::execute()
   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr_B = 
           boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(aData->attribute(CONSTRAINT_ATTR_ENTITY_B));
 
-  AttributeDoublePtr anAttribute =
+  AttributeDoublePtr anAttr_Value =
       boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
-
-  if (anAttr_A && anAttr_B && anAttribute->value() == 0)
+  if (anAttr_A && anAttr_B && !anAttr_Value->isInitialized())
   {
     FeaturePtr aFeature_A = anAttr_A->feature();
     FeaturePtr aFeature_B = anAttr_B->feature();
 
     double aValue = 40; // TODO
-    anAttribute->setValue(aValue);
+    anAttr_Value->setValue(aValue);
   }
 }
 
diff --git a/src/SketchPlugin/SketchPlugin_ConstraintLength.cpp b/src/SketchPlugin/SketchPlugin_ConstraintLength.cpp
index 7218a5341..76563c003 100644
--- a/src/SketchPlugin/SketchPlugin_ConstraintLength.cpp
+++ b/src/SketchPlugin/SketchPlugin_ConstraintLength.cpp
@@ -31,3 +31,14 @@ const boost::shared_ptr<GeomAPI_Shape>&  SketchPlugin_ConstraintLength::preview(
   return getPreview();
 }
 
+void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
+{
+  boost::shared_ptr<ModelAPI_Data> aData = data();
+  if (!aData->isValid())
+    return;
+
+  boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
+        boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
+  aPoint1->setValue(aPoint1->x() + theDeltaX, aPoint1->y() + theDeltaY);
+}
+
diff --git a/src/SketchPlugin/SketchPlugin_ConstraintLength.h b/src/SketchPlugin/SketchPlugin_ConstraintLength.h
index 57a5dbcc6..52719e765 100644
--- a/src/SketchPlugin/SketchPlugin_ConstraintLength.h
+++ b/src/SketchPlugin/SketchPlugin_ConstraintLength.h
@@ -41,6 +41,11 @@ public:
   /// \brief Returns the sketch preview
   SKETCHPLUGIN_EXPORT virtual const boost::shared_ptr<GeomAPI_Shape>& preview();
 
+  /// Moves the feature
+  /// \param theDeltaX the delta for X coordinate is moved
+  /// \param theDeltaY the delta for Y coordinate is moved
+  SKETCHPLUGIN_EXPORT virtual void move(const double theDeltaX, const double theDeltaY);
+
   /// \brief Use plugin manager for features creation
   SketchPlugin_ConstraintLength();
 };
diff --git a/src/SketchPlugin/SketchPlugin_Line.cpp b/src/SketchPlugin/SketchPlugin_Line.cpp
index 245440e22..f6d97fa21 100644
--- a/src/SketchPlugin/SketchPlugin_Line.cpp
+++ b/src/SketchPlugin/SketchPlugin_Line.cpp
@@ -40,14 +40,16 @@ const boost::shared_ptr<GeomAPI_Shape>& SketchPlugin_Line::preview()
     // compute a start point in 3D view
     boost::shared_ptr<GeomDataAPI_Point2D> aStartAttr = 
       boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(LINE_ATTR_START));
-    boost::shared_ptr<GeomAPI_Pnt> aStart(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
     // compute an end point in 3D view
     boost::shared_ptr<GeomDataAPI_Point2D> anEndAttr = 
       boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(LINE_ATTR_END));
-    boost::shared_ptr<GeomAPI_Pnt> anEnd(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
-    // make linear edge
-    boost::shared_ptr<GeomAPI_Shape> anEdge = GeomAlgoAPI_EdgeBuilder::line(aStart, anEnd);
-    setPreview(anEdge);
+    if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
+      boost::shared_ptr<GeomAPI_Pnt> aStart(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
+      boost::shared_ptr<GeomAPI_Pnt> anEnd(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
+      // make linear edge
+      boost::shared_ptr<GeomAPI_Shape> anEdge = GeomAlgoAPI_EdgeBuilder::line(aStart, anEnd);
+      setPreview(anEdge);
+    }
   }
   return getPreview();
 }
-- 
2.39.2