Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 277 insertions, 0 deletions

diff --git a/svx/source/engine3d/helperhittest3d.cxx b/svx/source/engine3d/helperhittest3d.cxx
new file mode 100644
index 000000000..65ed16af7
--- /dev/null
+++ b/svx/source/engine3d/helperhittest3d.cxx
@@ -0,0 +1,277 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <svx/helperhittest3d.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <svx/svdpage.hxx>
+#include <svx/scene3d.hxx>
+#include <svx/svditer.hxx>
+#include <drawinglayer/processor3d/cutfindprocessor3d.hxx>
+#include <sdr/contact/viewcontactofe3d.hxx>
+#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
+#include <com/sun/star/uno/Sequence.h>
+
+
+using namespace com::sun::star;
+
+namespace {
+
+class ImplPairDephAndObject
+{
+private:
+    const E3dCompoundObject*    mpObject;
+    double                      mfDepth;
+
+public:
+    ImplPairDephAndObject(const E3dCompoundObject* pObject, double fDepth)
+    :   mpObject(pObject),
+        mfDepth(fDepth)
+    {}
+
+    // for ::std::sort
+    bool operator<(const ImplPairDephAndObject& rComp) const
+    {
+        return (mfDepth < rComp.mfDepth);
+    }
+
+    // data read access
+    const E3dCompoundObject* getObject() const { return mpObject; }
+};
+
+}
+
+static void getAllHit3DObjectWithRelativePoint(
+    const basegfx::B3DPoint& rFront,
+    const basegfx::B3DPoint& rBack,
+    const E3dCompoundObject& rObject,
+    const drawinglayer::geometry::ViewInformation3D& rObjectViewInformation3D,
+    ::std::vector< basegfx::B3DPoint >& o_rResult,
+    bool bAnyHit)
+{
+    o_rResult.clear();
+
+    if(rFront.equal(rBack))
+        return;
+
+    // rObject is an E3dCompoundObject, so it cannot be a scene (which is an E3dObject)
+    const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
+    const drawinglayer::primitive3d::Primitive3DContainer aPrimitives(rVCObject.getViewIndependentPrimitive3DContainer());
+
+    if(aPrimitives.empty())
+        return;
+
+    // make BoundVolume empty and overlapping test for speedup
+    const basegfx::B3DRange aObjectRange(aPrimitives.getB3DRange(rObjectViewInformation3D));
+
+    if(!aObjectRange.isEmpty())
+    {
+        const basegfx::B3DRange aFrontBackRange(rFront, rBack);
+
+        if(aObjectRange.overlaps(aFrontBackRange))
+        {
+            // bound volumes hit, geometric cut tests needed
+            drawinglayer::processor3d::CutFindProcessor aCutFindProcessor(rObjectViewInformation3D, rFront, rBack, bAnyHit);
+            aCutFindProcessor.process(aPrimitives);
+            o_rResult = aCutFindProcessor.getCutPoints();
+        }
+    }
+}
+
+
+E3dScene* fillViewInformation3DForCompoundObject(drawinglayer::geometry::ViewInformation3D& o_rViewInformation3D, const E3dCompoundObject& rCandidate)
+{
+    // Search for root scene (outmost scene) of the 3d object since e.g. in chart, multiple scenes may
+    // be placed between object and outmost scene. On that search, remember the in-between scene's
+    // transformation for the correct complete ObjectTransformation. For historical reasons, the
+    // root scene's own object transformation is part of the scene's ViewTransformation, o do not
+    // add it. For more details, see ViewContactOfE3dScene::createViewInformation3D.
+    E3dScene* pParentScene(rCandidate.getParentE3dSceneFromE3dObject());
+    E3dScene* pRootScene(nullptr);
+    basegfx::B3DHomMatrix aInBetweenSceneMatrix;
+
+    while(pParentScene)
+    {
+        E3dScene* pParentParentScene(pParentScene->getParentE3dSceneFromE3dObject());
+
+        if(pParentParentScene)
+        {
+            // pParentScene is an in-between scene
+            aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
+        }
+        else
+        {
+            // pParentScene is the root scene
+            pRootScene = pParentScene;
+        }
+
+        pParentScene = pParentParentScene;
+    }
+
+    if(pRootScene)
+    {
+        const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());
+
+        if(aInBetweenSceneMatrix.isIdentity())
+        {
+            o_rViewInformation3D = rVCScene.getViewInformation3D();
+        }
+        else
+        {
+            // build new ViewInformation containing all transforms for the candidate
+            const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+
+            o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(
+                aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
+                aViewInfo3D.getOrientation(),
+                aViewInfo3D.getProjection(),
+                aViewInfo3D.getDeviceToView(),
+                aViewInfo3D.getViewTime(),
+                aViewInfo3D.getExtendedInformationSequence());
+        }
+    }
+    else
+    {
+        const uno::Sequence< beans::PropertyValue > aEmptyParameters;
+        o_rViewInformation3D = drawinglayer::geometry::ViewInformation3D(aEmptyParameters);
+    }
+
+    return pRootScene;
+}
+
+
+void getAllHit3DObjectsSortedFrontToBack(
+    const basegfx::B2DPoint& rPoint,
+    const E3dScene& rScene,
+    ::std::vector< const E3dCompoundObject* >& o_rResult)
+{
+    o_rResult.clear();
+    SdrObjList* pList = rScene.GetSubList();
+
+    if(nullptr == pList || 0 == pList->GetObjCount())
+        return;
+
+    // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
+    // the Scene's 2D transformation. Multiplying with the inverse transformation
+    // will create a point relative to the 3D scene as unit-2d-object
+    const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(rScene.GetViewContact());
+    basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
+    aInverseSceneTransform.invert();
+    const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);
+
+    // check if test point is inside scene's area at all
+    if(!(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0))
+        return;
+
+    SdrObjListIter aIterator(pList, SdrIterMode::DeepNoGroups);
+    ::std::vector< ImplPairDephAndObject > aDepthAndObjectResults;
+    const uno::Sequence< beans::PropertyValue > aEmptyParameters;
+    drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);
+
+    while(aIterator.IsMore())
+    {
+        const E3dCompoundObject* pCandidate = dynamic_cast< const E3dCompoundObject* >(aIterator.Next());
+
+        if(pCandidate)
+        {
+            fillViewInformation3DForCompoundObject(aViewInfo3D, *pCandidate);
+
+            // create HitPoint Front and Back, transform to object coordinates
+            basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
+            aViewToObject.invert();
+            const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
+            const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));
+
+            if(!aFront.equal(aBack))
+            {
+                // get all hit points with object
+                ::std::vector< basegfx::B3DPoint > aHitsWithObject;
+                getAllHit3DObjectWithRelativePoint(aFront, aBack, *pCandidate, aViewInfo3D, aHitsWithObject, false);
+
+                for(const basegfx::B3DPoint & a : aHitsWithObject)
+                {
+                    const basegfx::B3DPoint aPointInViewCoordinates(aViewInfo3D.getObjectToView() * a);
+                    aDepthAndObjectResults.emplace_back(pCandidate, aPointInViewCoordinates.getZ());
+                }
+            }
+        }
+    }
+
+    // fill nRetval
+    const sal_uInt32 nCount(aDepthAndObjectResults.size());
+
+    if(nCount)
+    {
+        // sort aDepthAndObjectResults by depth
+        ::std::sort(aDepthAndObjectResults.begin(), aDepthAndObjectResults.end());
+
+        // copy SdrObject pointers to return result set
+        for(const auto& rResult : aDepthAndObjectResults)
+        {
+            o_rResult.push_back(rResult.getObject());
+        }
+    }
+}
+
+
+bool checkHitSingle3DObject(
+    const basegfx::B2DPoint& rPoint,
+    const E3dCompoundObject& rCandidate)
+{
+    const uno::Sequence< beans::PropertyValue > aEmptyParameters;
+    drawinglayer::geometry::ViewInformation3D aViewInfo3D(aEmptyParameters);
+    E3dScene* pRootScene = fillViewInformation3DForCompoundObject(aViewInfo3D, rCandidate);
+
+    if(pRootScene)
+    {
+        // prepare relative HitPoint. To do so, get the VC of the 3DScene and from there
+        // the Scene's 2D transformation. Multiplying with the inverse transformation
+        // will create a point relative to the 3D scene as unit-2d-object
+        const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pRootScene->GetViewContact());
+        basegfx::B2DHomMatrix aInverseSceneTransform(rVCScene.getObjectTransformation());
+        aInverseSceneTransform.invert();
+        const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rPoint);
+
+        // check if test point is inside scene's area at all
+        if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0 && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
+        {
+            // create HitPoint Front and Back, transform to object coordinates
+            basegfx::B3DHomMatrix aViewToObject(aViewInfo3D.getObjectToView());
+            aViewToObject.invert();
+            const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
+            const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));
+
+            if(!aFront.equal(aBack))
+            {
+                // get all hit points with object
+                ::std::vector< basegfx::B3DPoint > aHitsWithObject;
+                getAllHit3DObjectWithRelativePoint(aFront, aBack, rCandidate, aViewInfo3D, aHitsWithObject, true);
+
+                if(!aHitsWithObject.empty())
+                {
+                    return true;
+                }
+            }
+        }
+    }
+
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */