Hannes: PolyLine Circles update. TODO: Cleanup variable names!

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@17375 383ad7c9-94d9-4d36-a494-682f7c89f535

PolyLinePlugin.cc

@@ -26,6 +26,24 @@
 
 #include <OpenFlipper/common/GlobalOptions.hh>
 
+#include <ACG/Geometry/bsp/BSPImplT.hh>
+
+namespace {
+
+class GlutObjectNode : public ACG::SceneGraph::GlutPrimitiveNode{
+	public:
+		GlutObjectNode(PolyLineObject* L, BaseNode* M, std::string name)
+			: ACG::SceneGraph::GlutPrimitiveNode(ACG::SceneGraph::GlutPrimitiveNode::SPHERE, M, name)
+		{
+			line = L;
+		}
+	public:
+		PolyLineObject* line;
+};
+
+
+}
+
 
 //== IMPLEMENTATION ==========================================================
 
@@ -38,26 +56,25 @@ PolyLinePlugin::PolyLinePlugin() :
         pickToolbar_(0),
         pickToolBarActions_(0),
         insertAction_(0),
+        insertCircleAction_(0),
         deleteAction_(0),
         moveAction_(0),
         smartMoveAction_(0),
         mergeAction_(0),
         splitAction_(0),
         cutAction_(0),
-        insertCircleAction_(0),
         cur_insert_id_(-1),
         cur_polyline_obj_(0),
         cur_move_id_(-1),
         move_point_ref_(0),
         create_point_ref_(0),
-        createCircle_Active_(false),
+        createCircle_CurrSelIndex_(-1),
+        moveCircle_SelNode_(0),
         cur_merge_id_(-1),
         smart_move_timer_(0),
         cur_smart_move_obj_(0),
         planeSelect_(0)
-
 {
-
 }
 
 
@@ -96,6 +113,8 @@ initializePlugin()
   connect(tool_->rb_merge,  SIGNAL( clicked() ), this, SLOT( slotEditModeChanged() ));
   connect(tool_->rb_split,  SIGNAL( clicked() ), this, SLOT( slotEditModeChanged() ));
 
+  connect(tool_->sb_CirclePointNum, SIGNAL(valueChanged(int)), this, SLOT(slot_setCirclePointNum(int)));
+
   //add icons
   tool_->rb_insert->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "polyline_insert.png") );
   tool_->rb_InsertCircle->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "polyline_circle.png") );
@@ -746,9 +765,10 @@ slot_smart_move_timer()
 }
 
 
-//-----------------------------------------------------------------------------
 
 
+//-----------------------------------------------------------------------------
+
 PolyLinePlugin::EditMode
 PolyLinePlugin::
 mode()
@@ -767,10 +787,8 @@ mode()
   return PL_NONE;
 }
 
-
 //-----------------------------------------------------------------------------
 
-
 void
 PolyLinePlugin::
 me_insert( QMouseEvent* _event )
@@ -867,61 +885,91 @@ me_insert( QMouseEvent* _event )
   }
 }
 
-
 //-----------------------------------------------------------------------------
 
 void PolyLinePlugin::
 me_insertCircle(QMouseEvent* _event)
 {
-	ACG::GLState& gl = PluginFunctions::viewerProperties().glState();
 	TriMeshObject* mesh;
 	TriMesh::FaceHandle fh;
 	TriMesh::VertexHandle vh;
 	ACG::Vec3d hit_point;
 	if(!pick_triangle_mesh(_event->pos(), mesh, fh, vh, hit_point))
 		return;//can't generate a circle in empty space
-	if(_event->type() == QEvent::MouseMove && createCircle_Active_) {
-		if(!cur_polyline_obj_ || !cur_polyline_obj_->line()) {
-			createCircle_Active_ = false;
+
+	if(_event->type() == QEvent::MouseMove && createCircle_CurrSelIndex_ != -1) {
+		PolyLineObject* L = 0;
+		if(!PluginFunctions::getObject(createCircle_CurrSelIndex_, L))
 			return;
-		}
 
-		ACG::Vec3d n = createCircle_Normal, x0 = createCircle_Point_;
-		double t = ((n | x0) - (n | hit_point)) / (n | n);
-		ACG::Vec3d onPlane = hit_point + t * n, d = onPlane - x0;
-		double r = sqrt(d | d);
-		const unsigned int N = 16;
-		ACG::Quaterniond qRot(n, 2.0 * M_PI / double(N));
-		ACG::Vec3d cPos = onPlane - x0;
-
-		cur_polyline_obj_->line()->clear();
-		for(unsigned int i = 0; i <= N; i++) {
-			ACG::Vec3d screenCoords = gl.project(cPos + x0), p = cPos;
-			QPoint qp((int)screenCoords[0], (int)(gl.viewport_height() - screenCoords[1]));
-			if(pick_triangle_mesh(qp, mesh, fh, vh, p))
-				cur_polyline_obj_->line()->add_point((PolyLine::Point) (p ));
-			cPos = qRot.rotate(cPos);
-		}
-		//cur_polyline_obj_->line()->add_point((PolyLine::Point) onPlane);
-		emit updatedObject(cur_insert_id_, UPDATE_GEOMETRY | UPDATE_TOPOLOGY);
+		const ACG::Vec3d n = createCircle_Normal_, x0 = createCircle_Point_;
+		const double t = ((n | x0) - (n | hit_point)) / (n | n);
+		const ACG::Vec3d onPlane = hit_point + t * n,  d = onPlane - x0;
+		const double r = d.norm();
+		const ACG::Vec3d mainAxis = (onPlane - x0).normalize(), sideAxis = (mainAxis % n).normalize();
+
+		PolyLineCircleData* LD = new PolyLineCircleData(x0, n, mainAxis, sideAxis, r, r, mesh->id());
+		L->setObjectData(CIRCLE_DATA, LD);
+		updatePolyEllipse(L, tool_->sb_CirclePointNum->value());
+		updateHandles(L);
 	}
 	else if(_event->type() == QEvent::MouseButtonPress) {
 		emit addEmptyObject(DATA_POLY_LINE, cur_insert_id_);
 		BaseObjectData *obj = 0;
 		PluginFunctions::getObject(cur_insert_id_, obj);
 		obj->target(true);
-		cur_polyline_obj_ = PluginFunctions::polyLineObject(obj);
-		cur_polyline_obj_->materialNode()->set_random_color();
+		PolyLineObject* newLine = PluginFunctions::polyLineObject(obj);
+		newLine->materialNode()->set_random_color();
 
 		createCircle_Point_ = hit_point;
 		if(!mesh->mesh()->has_face_normals())
 			mesh->mesh()->request_face_normals();
-		createCircle_Normal = PluginFunctions::viewingDirection();// mesh->mesh()->normal(fh);
+		createCircle_Normal_ = mesh->mesh()->normal(fh);
 		emit updatedObject(cur_insert_id_, UPDATE_GEOMETRY | UPDATE_TOPOLOGY);
-		createCircle_Active_ = true;
+		createCircle_CurrSelIndex_ = newLine->id();
+
+		ACG::Vec3d bbMin( FLT_MAX, FLT_MAX, FLT_MAX);
+		ACG::Vec3d bbMax(-FLT_MAX,-FLT_MAX,-FLT_MAX);
+		mesh->boundingBox(bbMin, bbMax);
+		const ACG::Vec3d sizeBB((bbMax-bbMin));
+
+		GlutObjectNode* handle0 = new GlutObjectNode(newLine, obj->manipulatorNode(), "N_Handle0");
+		handle0->get_primitive(0).color = ACG::Vec4f(1,0,0,1);
+		handle0->set_size(0.005*sizeBB.norm());
+		handle0->show();
+		handle0->enablePicking(false);
+		handle0->set_position(hit_point);
+		newLine->addAdditionalNode(handle0, name(), "handle0");
+		handle0->drawMode(ACG::SceneGraph::DrawModes::SOLID_FLAT_SHADED);
+
+		GlutObjectNode* handle1 = new GlutObjectNode(newLine, obj->manipulatorNode(), "N_Handle1");
+		handle1->get_primitive(0).color = ACG::Vec4f(0,1,0,1);
+		handle1->set_size(0.005*sizeBB.norm());
+		handle1->show();
+		handle1->enablePicking(true);
+		handle1->set_position(hit_point);
+		newLine->addAdditionalNode(handle1, name(), "handle1");
+		handle1->drawMode(ACG::SceneGraph::DrawModes::SOLID_FLAT_SHADED);
+
+		GlutObjectNode* cenNode = new GlutObjectNode(newLine, obj->manipulatorNode(), "N_Center");
+		cenNode->get_primitive(0).color = ACG::Vec4f(0,0,1,1);
+		cenNode->set_size(0.005*sizeBB.norm());
+		cenNode->show();
+		cenNode->enablePicking(true);
+		cenNode->set_position(hit_point);
+		newLine->addAdditionalNode(cenNode, name(), "circle");
+		cenNode->drawMode(ACG::SceneGraph::DrawModes::SOLID_FLAT_SHADED);
+
+		emit updatedObject(newLine->id(), UPDATE_ALL);
 	}
 	else if(_event->type() == QEvent::MouseButtonRelease) {
-		createCircle_Active_ = false;
+		PolyLineObject* L;
+		if(!PluginFunctions::getObject(createCircle_CurrSelIndex_, L))
+			return;
+		ACG::SceneGraph::GlutPrimitiveNode* N;
+		if(L->getAdditionalNode(N, name(), "handle0"))
+			N->enablePicking(true);
+		createCircle_CurrSelIndex_ = -1;
 	}
 }
 
@@ -960,7 +1008,7 @@ void
 PolyLinePlugin::
 me_move( QMouseEvent* _event )
 {
-  // MousePress ? -> get eference point
+  // MousePress ? -> get reference point
   if (_event->type() == QEvent::MouseButtonPress) {
 
     unsigned int node_idx, target_idx;
@@ -968,11 +1016,18 @@ me_move( QMouseEvent* _event )
     // pick
     if (PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING, _event->pos(), node_idx, target_idx, &hit_point)) {
 
+      BaseNode* node = find_node( PluginFunctions::getRootNode(), node_idx );
+      GlutObjectNode* glutNode = dynamic_cast<GlutObjectNode*>(node);
+      if(glutNode) {
+        moveCircle_SelNode_        = glutNode;
+        createCircle_CurrSelIndex_ = glutNode->line->id();
+      }
+
       BaseObjectData* obj = 0;
       if (PluginFunctions::getPickedObject(node_idx, obj)) {
         // is picked object polyline?
         PolyLineObject* cur_pol = PluginFunctions::polyLineObject(obj);
-        if (cur_pol) {
+        if (cur_pol && !cur_pol->objectData(CIRCLE_DATA)) {//no vertex dragging on circles!
 
           // Check if we got a line segment or a vertex
           if ( target_idx >= cur_pol->line()->n_vertices() )
@@ -984,32 +1039,66 @@ me_move( QMouseEvent* _event )
           move_point_ref_ = &(cur_pol->line()->point(target_idx));
         }
       }
-
     }
-
   }
 
   // Move ? -> move reference point
-  if (_event->type() == QEvent::MouseMove)
-    if (move_point_ref_ != 0) {
+  if (_event->type() == QEvent::MouseMove){
 
-      unsigned int node_idx, target_idx;
-      ACG::Vec3d hit_point;
+    unsigned int node_idx, target_idx;
+    ACG::Vec3d hit_point;
 
-      // pick
+    if(moveCircle_SelNode_) {
+      if(PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING, _event->pos(), node_idx, target_idx, &hit_point) ) {
+
+        PolyLineObject* L;
+        if(!PluginFunctions::getObject(createCircle_CurrSelIndex_, L))
+          return;
+
+        PolyLineCircleData* LD = (PolyLineCircleData*)L->objectData(CIRCLE_DATA);
+        double cr;
+        const double rm = LD->circleMainRadius_, rs = LD->circleSideRadius_;
+        ACG::Vec3d onPlane;
+        const ACG::Vec3d x0 = LD->circleCenter_, n = LD->circleNormal_;
+
+        createCircle_getHitInfo(LD, hit_point, &hit_point, &cr, &onPlane);
+
+        if(!moveCircle_SelNode_->name().compare("N_Center")) {
+          LD->circleCenter_ = hit_point;
+        }
+        else {
+          ACG::Vec3d axisa = (onPlane - x0).normalize();
+          if(!moveCircle_SelNode_->name().compare("N_Handle0")) {
+            ACG::Vec3d axisb = (axisa % n).normalize();
+            LD->circleMainRadius_ = cr;
+            LD->circleMainAxis_ = axisa;
+            LD->circleSideAxis_ = axisb;
+          } else {
+            ACG::Vec3d axisb = (n % axisa).normalize();
+            LD->circleSideRadius_ = cr;
+            LD->circleSideAxis_ = axisa;
+            LD->circleMainAxis_ = axisb;
+          }
+        }
+        updateHandles(L);
+        updatePolyEllipse(L, tool_->sb_CirclePointNum->value());
+      }
+    }
+    else if (move_point_ref_ != 0) {
       if (PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_FACE, _event->pos(), node_idx, target_idx, &hit_point)) {
         (*move_point_ref_) = (PolyLine::Point) hit_point;
-
         // update
         emit updatedObject(cur_move_id_, UPDATE_GEOMETRY);
       }
     }
+  }
 
   // Release ? -> release reference point
-  if (_event->type() == QEvent::MouseButtonRelease)
-    move_point_ref_ = 0;
-
-
+  if (_event->type() == QEvent::MouseButtonRelease) {
+	  move_point_ref_ = 0;
+	  moveCircle_SelNode_ = 0;
+	  createCircle_CurrSelIndex_ = -1;
+  }
 }
 //-----------------------------------------------------------------------------
 
@@ -1117,10 +1206,8 @@ me_split( QMouseEvent* _event )
 
 }
 
-
 //-----------------------------------------------------------------------------
 
-
 void
 PolyLinePlugin::
 me_merge( QMouseEvent* _event )
@@ -1320,6 +1407,8 @@ me_smart_move( QMouseEvent* _event )
         PolyLineObject* cur_pol = PluginFunctions::polyLineObject(obj);
         if (cur_pol) {
 
+		  cur_polyline_obj_ = cur_pol;
+
           // Check if we got a line segment or a vertex
           if ( target_idx >= cur_pol->line()->n_vertices() )
             return;
@@ -1357,6 +1446,8 @@ me_smart_move( QMouseEvent* _event )
   me_move( _event);
 }
 
+//-----------------------------------------------------------------------------
+
 void
 PolyLinePlugin::
 slotEditModeChanged()
@@ -1365,6 +1456,27 @@ slotEditModeChanged()
   PluginFunctions::actionMode(Viewer::PickingMode);
 }
 
+//-----------------------------------------------------------------------------
+
+void
+PolyLinePlugin::
+updateHandles(PolyLineObject* _lineObject)
+{
+  PolyLineCircleData* circleData = dynamic_cast<PolyLineCircleData*>(_lineObject->objectData(CIRCLE_DATA) );
+  GlutObjectNode* H0, *H1, *C;
+  _lineObject->getAdditionalNode(C,  name(), "circle");
+  _lineObject->getAdditionalNode(H0, name(), "handle0");
+  _lineObject->getAdditionalNode(H1, name(), "handle1");
+  if(C)
+    C->set_position(createCircle_getHit(circleData, circleData->circleCenter_));
+  if(H0)
+    H0->set_position(createCircle_getHit(circleData, circleData->circleCenter_ + circleData->circleMainAxis_ * circleData->circleMainRadius_));
+  if(H1)
+    H1->set_position(createCircle_getHit(circleData, circleData->circleCenter_ + circleData->circleSideAxis_ * circleData->circleSideRadius_));
+}
+
+//-----------------------------------------------------------------------------
+
 void 
 PolyLinePlugin::
 slotPickToolbarAction(QAction* _action) {

PolyLinePlugin.hh

@@ -43,6 +43,10 @@
 
 #include <ObjectTypes/Plane/QtPlaneSelect.hh>
 
+#include <ACG/Scenegraph/GlutPrimitiveNode.hh>
+
+#include <ObjectTypes/PolyLine/PolyLineCircleData.hh>
+
 #define CREATE_CUT_POLYLINE "Create Polyline"
 
 //== CLASS DEFINITION =========================================================
@@ -174,18 +178,20 @@ private slots:
 
   void slot_smart_move_timer();
 
+  void slot_setCirclePointNum(int i);
+
 private :
 
   EditMode mode();
 
   // mouse events
-  void me_insert    ( QMouseEvent* _event );
-  void me_insertCircle(QMouseEvent* _event );
-  void me_delete    ( QMouseEvent* _event );
-  void me_move      ( QMouseEvent* _event );
-  void me_split     ( QMouseEvent* _event );
-  void me_merge     ( QMouseEvent* _event );
-  void me_smart_move( QMouseEvent* _event );
+  void me_insert      ( QMouseEvent* _event );
+  void me_insertCircle( QMouseEvent* _event );
+  void me_delete      ( QMouseEvent* _event );
+  void me_move        ( QMouseEvent* _event );
+  void me_split       ( QMouseEvent* _event );
+  void me_merge       ( QMouseEvent* _event );
+  void me_smart_move  ( QMouseEvent* _event );
 
   //===========================================================================
   /** @name ToolBox
@@ -227,13 +233,13 @@ private :
     QActionGroup* pickToolBarActions_;
     
     QAction*      insertAction_;
+    QAction*	  insertCircleAction_;
     QAction*      deleteAction_;
     QAction*      moveAction_;
     QAction*      smartMoveAction_;
     QAction*      mergeAction_;
     QAction*      splitAction_;
     QAction*      cutAction_;
-    QAction*	  insertCircleAction_;
     
   private slots:
     
@@ -287,9 +293,28 @@ private:
     PolyLine::Point*  create_point_ref_;
     PolyLine::Point   move_point_orig_;
     
-    bool			        createCircle_Active_;
+    int				        createCircle_CurrSelIndex_;
     ACG::Vec3d		    createCircle_Point_;
-    ACG::Vec3d		    createCircle_Normal;
+    ACG::Vec3d		    createCircle_Normal_;
+    ACG::SceneGraph::GlutPrimitiveNode* moveCircle_SelNode_;
+
+    bool createCircle_getPointOnMesh(TriMeshObject* _triMeshObject,
+                                     ACG::Vec3d     _center,
+                                     ACG::Vec3d     _pOnPlane,
+                                     ACG::Vec3d     _n,
+                                     ACG::Vec3d*    _pOut);
+
+    bool createCircle_getHitInfo(PolyLineCircleData* _circleData,
+                                 ACG::Vec3d          _hit_Point,
+                                 ACG::Vec3d*         _pOut = 0,
+                                 double*             _r = 0,
+                                 ACG::Vec3d*         _onPlane = 0);
+
+    ACG::Vec3d createCircle_getHit(PolyLineCircleData* _circleData, ACG::Vec3d _hit_point);
+
+    void updatePolyEllipse(PolyLineObject* _lineObject, unsigned int _pointCount);
+
+    void updateHandles(PolyLineObject* _lineObject);
 
     int               cur_merge_id_;
     

PolyLinePlugin_Circle.cc

+/*===========================================================================*\
+ *                                                                           *
+ *                              OpenFlipper                                  *
+ *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
+ *                           www.openflipper.org                             *
+ *                                                                           *
+ *---------------------------------------------------------------------------*
+ *  This file is part of OpenFlipper.                                        *
+ *                                                                           *
+ *  OpenFlipper is free software: you can redistribute it and/or modify      *
+ *  it under the terms of the GNU Lesser General Public License as           *
+ *  published by the Free Software Foundation, either version 3 of           *
+ *  the License, or (at your option) any later version with the              *
+ *  following exceptions:                                                    *
+ *                                                                           *
+ *  If other files instantiate templates or use macros                       *
+ *  or inline functions from this file, or you compile this file and         *
+ *  link it with other files to produce an executable, this file does        *
+ *  not by itself cause the resulting executable to be covered by the        *
+ *  GNU Lesser General Public License. This exception does not however       *
+ *  invalidate any other reasons why the executable file might be            *
+ *  covered by the GNU Lesser General Public License.                        *
+ *                                                                           *
+ *  OpenFlipper is distributed in the hope that it will be useful,           *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
+ *  GNU Lesser General Public License for more details.                      *
+ *                                                                           *
+ *  You should have received a copy of the GNU LesserGeneral Public          *
+ *  License along with OpenFlipper. If not,                                  *
+ *  see <http://www.gnu.org/licenses/>.                                      *
+ *                                                                           *
+\*===========================================================================*/
+
+/*===========================================================================*\
+ *                                                                           *
+ *   $Revision$                                                       *
+ *   $Author$                                                      *
+ *   $Date$                   *
+ *                                                                           *
+\*===========================================================================*/
+
+//=============================================================================
+//
+//  CLASS PolyLinePlugin - IMPLEMENTATION
+//
+//=============================================================================
+
+
+//== INCLUDES =================================================================
+
+#include "PolyLinePlugin.hh"
+
+namespace {
+
+struct Onb {
+
+	ACG::Vec3d x,y,z;
+
+	Onb(PolyLineCircleData* _circleData) {
+		x = _circleData->circleMainAxis_;
+		z = _circleData->circleSideAxis_;
+		y = _circleData->circleNormal_;
+	}
+	ACG::Vec3d toWorld(ACG::Vec3d v) const {
+		return ACG::Vec3d(x[0] * v[0] + y[0] * v[1] + z[0] * v[2],
+					        	  x[1] * v[0] + y[1] * v[1] + z[1] * v[2],
+					        	  x[2] * v[0] + y[2] * v[1] + z[2] * v[2]);
+	}
+};
+
+}
+
+//-----------------------------------------------------------------------------
+
+bool
+PolyLinePlugin::
+createCircle_getPointOnMesh(TriMeshObject* _triMeshObject, ACG::Vec3d _center, ACG::Vec3d _pOnPlane, ACG::Vec3d _n, ACG::Vec3d* _pOut)
+{
+	OpenMeshTriangleBSPT<TriMesh>* bsp            = _triMeshObject->requestTriangleBsp();
+	OpenMeshTriangleBSPT<TriMesh>::RayCollision c = bsp->raycollision(_pOnPlane, _n);
+
+	if(c.empty())
+		return false;
+
+	int i = -1;
+	double smDist = 10e10;
+
+	for(unsigned int j = 0; j < c.size(); j++) {
+		//ACG::Vec3d norAtInt = M->mesh()->normal(c[j].first);
+		ACG::Vec3d p = _pOnPlane + _n * c[j].second, dir = _center - p;
+		double dist = sqrt(dir | dir);
+		if(dist < smDist) {
+			smDist = dist;
+			if(_pOut)
+				*_pOut = p;
+			i = j;
+		}
+	}
+
+	return i != -1;
+}
+
+//-----------------------------------------------------------------------------
+
+bool
+PolyLinePlugin::
+createCircle_getHitInfo(PolyLineCircleData* _circleData, ACG::Vec3d _hit_Point, ACG::Vec3d* _pOut, double* r, ACG::Vec3d* _onPlaneO)
+{
+	ACG::Vec3d n = _circleData->circleNormal_, x0 = _circleData->circleCenter_;
+	double t = ((n | x0) - (n | _hit_Point)) / (n | n);
+	ACG::Vec3d onPlane = _hit_Point + t * n,  d = onPlane - x0;
+	if(r)
+		*r = d.norm();
+	if(_onPlaneO)
+		*_onPlaneO = onPlane;
+	TriMeshObject* mesh;
+	if(PluginFunctions::getObject(_circleData->circleMeshIndex_, mesh))
+		return createCircle_getPointOnMesh(mesh, x0, onPlane, n, _pOut);
+	else return false;
+}
+
+//-----------------------------------------------------------------------------
+
+ACG::Vec3d
+PolyLinePlugin::
+createCircle_getHit(PolyLineCircleData* _circleData, ACG::Vec3d _hit_point)
+{
+	ACG::Vec3d h, p;
+	double r;
+	if(!createCircle_getHitInfo(_circleData, _hit_point, &h, &r, &p))
+		return p;//no point on the mesh was found...
+	else return h;
+}
+
+//-----------------------------------------------------------------------------
+
+void
+PolyLinePlugin::
+updatePolyEllipse(PolyLineObject* _lineObject, unsigned int _pointCount)
+{
+	PolyLineCircleData* lineData = dynamic_cast<PolyLineCircleData*>(_lineObject->objectData(CIRCLE_DATA));
+
+	const double theta = 2.0 * M_PI / double(_pointCount);
+	_pointCount += tool_->rb_CloseCircle->isChecked() ? 0 : -1;
+	const double r2 = lineData->circleMainRadius_, r1 = lineData->circleSideRadius_;
+	const Onb basis(lineData);
+
+	_lineObject->line()->clear();
+
+	for(unsigned int i = 0; i <= _pointCount; i++) {
+		const double tanTheta_i = tan(theta * i);
+		double x = (r1 * r2) / sqrt(r2 * r2 + r1 * r1 * tanTheta_i * tanTheta_i);
+		x = ((theta * i) <= M_PI_2 || (theta * i) > (3.0 * M_PI_2)) ? x : -x;
+		const double y = tanTheta_i * x;
+		ACG::Vec3d p(y,0,x);
+		if(createCircle_getHitInfo(lineData, basis.toWorld(p) + lineData->circleCenter_, &p))
+		  _lineObject->line()->add_point(p);
+	}
+	emit updatedObject(_lineObject->id(), UPDATE_GEOMETRY | UPDATE_TOPOLOGY);
+}
+
+//-----------------------------------------------------------------------------
+