+ unify DLL export defines to namespace names

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d

src/Gui/Utilities.cpp

@@ -0,0 +1,168 @@
+/***************************************************************************
+ *   Copyright (c) 2010 Werner Mayer <wmayer[at]users.sourceforge.net>     *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  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 Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+# include <algorithm>
+# include <Inventor/SbMatrix.h>
+# include <Inventor/SbTesselator.h>
+# include <QAbstractItemModel>
+# include <QAbstractItemView>
+# include <QItemSelection>
+# include <QItemSelectionModel>
+#endif
+#include "Utilities.h"
+#include <App/DocumentObject.h>
+
+using namespace Gui;
+
+
+ViewVolumeProjection::ViewVolumeProjection (const SbViewVolume &vv)
+  : viewVolume(vv)
+{
+}
+
+Base::Vector3f ViewVolumeProjection::operator()(const Base::Vector3f &pt) const
+{
+    SbVec3f pt3d(pt.x,pt.y,pt.z);
+    viewVolume.projectToScreen(pt3d,pt3d);
+    return Base::Vector3f(pt3d[0],pt3d[1],pt3d[2]);
+}
+
+Base::Vector3d ViewVolumeProjection::operator()(const Base::Vector3d &pt) const
+{
+    Base::Vector3f ptf = Base::convertTo<Base::Vector3f>(pt);
+    ptf = operator()(ptf);
+    return Base::convertTo<Base::Vector3d>(ptf);
+}
+
+Base::Vector3f ViewVolumeProjection::inverse (const Base::Vector3f &pt) const
+{
+#if 1
+    SbVec3f pt3d(2.0f*pt.x-1.0f, 2.0f*pt.y-1.0f, 2.0f*pt.z-1.0f);
+    viewVolume.getMatrix().inverse().multVecMatrix(pt3d, pt3d);
+#elif 1
+    SbLine line; SbVec3f pt3d;
+    SbPlane distPlane = viewVolume.getPlane(viewVolume.getNearDist());
+    viewVolume.projectPointToLine(SbVec2f(pt.x,pt.x), line);
+    distPlane.intersect(line, pt3d);
+#else
+    SbVec3f pt3d = viewVolume.getPlanePoint(viewVolume.getNearDist(), SbVec2f(pt.x,pt.y));
+#endif
+    return Base::Vector3f(pt3d[0],pt3d[1],pt3d[2]);
+}
+
+Base::Vector3d ViewVolumeProjection::inverse (const Base::Vector3d &pt) const
+{
+    Base::Vector3f ptf = Base::convertTo<Base::Vector3f>(pt);
+    ptf = inverse(ptf);
+    return Base::convertTo<Base::Vector3d>(ptf);
+}
+
+Base::Matrix4D ViewVolumeProjection::getProjectionMatrix () const
+{
+    // Inventor stores the transposed matrix
+    Base::Matrix4D mat;
+    SbMatrix affine, proj;
+    viewVolume.getMatrices(affine, proj);
+    for (int i=0; i<4; i++) {
+        for (int j=0; j<4; j++)
+            mat[i][j] = proj[j][i];
+    }
+
+    return mat;
+}
+
+// ----------------------------------------------------------------------------
+
+void Tessellator::tessCB(void * v0, void * v1, void * v2, void * cbdata)
+{
+    int * vtx0 = (int *)v0; 
+    int * vtx1 = (int *)v1; 
+    int * vtx2 = (int *)v2;
+
+    std::vector<int>* array = (std::vector<int> *)cbdata;
+    array->push_back(*vtx0);
+    array->push_back(*vtx1);
+    array->push_back(*vtx2);
+    array->push_back(-1);
+}
+
+Tessellator::Tessellator(const std::vector<SbVec2f>& poly) : polygon(poly)
+{
+}
+
+std::vector<int> Tessellator::tessellate() const
+{
+    std::vector<int> indices(polygon.size());
+    std::vector<int> face_indices;
+
+    SbTesselator tessellator(tessCB, &face_indices);
+    tessellator.beginPolygon();
+
+    int index = 0;
+    for (std::vector<SbVec2f>::const_iterator it = polygon.begin(); it != polygon.end(); ++it, index++) {
+        indices[index] = index;
+        tessellator.addVertex(SbVec3f((*it)[0], (*it)[1], 0.0f), &(indices[index]));
+    }
+
+    // run the triangulation now
+    tessellator.endPolygon();
+    return face_indices;
+}
+
+// ----------------------------------------------------------------------------
+
+class ItemViewSelection::MatchName {
+public:
+    MatchName(const QString& n) : name(n)
+    {}
+    bool operator() (const App::DocumentObject* obj) {
+        return name == QLatin1String(obj->getNameInDocument());
+    }
+private:
+    QString name;
+};
+
+ItemViewSelection::ItemViewSelection(QAbstractItemView* view)
+  : view(view)
+{
+}
+
+void ItemViewSelection::applyFrom(const std::vector<App::DocumentObject*> objs)
+{
+    QAbstractItemModel* model = view->model();
+    QItemSelection range;
+    for (int i=0; i<model->rowCount(); i++) {
+        QModelIndex item = model->index(i,0);
+        if (item.isValid()) {
+            QVariant name = model->data(item, Qt::UserRole);
+            std::vector<App::DocumentObject*>::const_iterator it;
+            it = std::find_if(objs.begin(), objs.end(), MatchName(name.toString()));
+            if (it != objs.end())
+                range.select(item, item);
+        }
+    }
+
+    view->selectionModel()->select(range, QItemSelectionModel::Select);
+}