Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 201 insertions, 0 deletions

diff --git a/svx/source/engine3d/helperminimaldepth3d.cxx b/svx/source/engine3d/helperminimaldepth3d.cxx
new file mode 100644
index 000000000..cfcc2c7d1
--- /dev/null
+++ b/svx/source/engine3d/helperminimaldepth3d.cxx
@@ -0,0 +1,201 @@
+/* -*- 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 "helperminimaldepth3d.hxx"
+#include <drawinglayer/processor3d/baseprocessor3d.hxx>
+#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
+#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
+#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
+#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
+#include <sdr/contact/viewcontactofe3d.hxx>
+#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
+#include <svx/obj3d.hxx>
+#include <svx/scene3d.hxx>
+
+
+namespace drawinglayer::processor3d
+{
+        namespace {
+
+        class MinimalDephInViewExtractor : public BaseProcessor3D
+        {
+        private:
+            // the value which will be fetched as result
+            double                                  mfMinimalDepth;
+
+            // as tooling, the process() implementation takes over API handling and calls this
+            // virtual render method when the primitive implementation is BasePrimitive3D-based.
+            virtual void processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate) override;
+
+        public:
+            explicit MinimalDephInViewExtractor(const geometry::ViewInformation3D& rViewInformation)
+            :   BaseProcessor3D(rViewInformation),
+                mfMinimalDepth(DBL_MAX)
+            {}
+
+            // data access
+            double getMinimalDepth() const { return mfMinimalDepth; }
+        };
+
+        }
+
+        void MinimalDephInViewExtractor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate)
+        {
+            // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
+            switch(rCandidate.getPrimitive3DID())
+            {
+                case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D :
+                {
+                    // transform group. Remember current transformations
+                    const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate);
+                    const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D());
+
+                    // create new transformation; add new object transform from right side
+                    const geometry::ViewInformation3D aNewViewInformation3D(
+                        aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(),
+                        aLastViewInformation3D.getOrientation(),
+                        aLastViewInformation3D.getProjection(),
+                        aLastViewInformation3D.getDeviceToView(),
+                        aLastViewInformation3D.getViewTime(),
+                        aLastViewInformation3D.getExtendedInformationSequence());
+                    updateViewInformation(aNewViewInformation3D);
+
+                    // let break down
+                    process(rPrimitive.getChildren());
+
+                    // restore transformations
+                    updateViewInformation(aLastViewInformation3D);
+                    break;
+                }
+                case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
+                {
+                    // PolygonHairlinePrimitive3D
+                    const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rCandidate);
+                    const basegfx::B3DPolygon& rPolygon = rPrimitive.getB3DPolygon();
+                    const sal_uInt32 nCount(rPolygon.count());
+
+                    for(sal_uInt32 a(0); a < nCount; a++)
+                    {
+                        const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * rPolygon.getB3DPoint(a));
+
+                        if(aPointInView.getZ() < mfMinimalDepth)
+                        {
+                            mfMinimalDepth = aPointInView.getZ();
+                        }
+                    }
+
+                    break;
+                }
+                case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
+                {
+                    // PolyPolygonMaterialPrimitive3D
+                    const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate);
+                    const basegfx::B3DPolyPolygon& rPolyPolygon = rPrimitive.getB3DPolyPolygon();
+                    const sal_uInt32 nPolyCount(rPolyPolygon.count());
+
+                    for(sal_uInt32 a(0); a < nPolyCount; a++)
+                    {
+                        const basegfx::B3DPolygon& aPolygon(rPolyPolygon.getB3DPolygon(a));
+                        const sal_uInt32 nCount(aPolygon.count());
+
+                        for(sal_uInt32 b(0); b < nCount; b++)
+                        {
+                            const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * aPolygon.getB3DPoint(b));
+
+                            if(aPointInView.getZ() < mfMinimalDepth)
+                            {
+                                mfMinimalDepth = aPointInView.getZ();
+                            }
+                        }
+                    }
+
+                    break;
+                }
+                default :
+                {
+                    // process recursively
+                    process(rCandidate.get3DDecomposition(getViewInformation3D()));
+                    break;
+                }
+            }
+        }
+} // end of namespace
+
+
+// changed to create values using VCs, Primitive3DContainer and ViewInformation3D to allow
+// removal of old 3D bucket geometry. There is one slight difference in the result, it's
+// in [0.0 .. 1.0] for Z-Depth since the scaling of the scene as 2D object is no longer
+// part of the 3D transformations. This could be added since the ViewContactOfE3dScene is
+// given, but is not needed since the permutation of the depth values needs only be correct
+// relative to each other
+
+double getMinimalDepthInViewCoordinates(const E3dCompoundObject& rObject)
+{
+    // this is an E3dCompoundObject, so it cannot be a scene (which is an E3dObject).
+    // Get primitive sequence using VC
+    const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
+    const drawinglayer::primitive3d::Primitive3DContainer aPrimitives = rVCObject.getViewIndependentPrimitive3DContainer();
+    double fRetval(DBL_MAX);
+
+    if(!aPrimitives.empty())
+    {
+        const E3dScene* pScene(rObject.getRootE3dSceneFromE3dObject());
+
+        if(pScene)
+        {
+            // get ViewInformation3D from scene using VC
+            const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
+            const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
+
+            // the scene's object transformation is already part of aViewInfo3D.getObjectTransformation()
+            // for historical reasons (see ViewContactOfE3dScene::createViewInformation3D for more info)
+            // and the object's transform is part of aPrimitives (and taken into account when decomposing
+            // to PolygonHairlinePrimitive3D and PolyPolygonMaterialPrimitive3D). The missing part may be
+            // some Scene SdrObjects lying in-between which may need to be added. This is e.g. used in chart,
+            // and generally allowed in 3d scenes and their 3d object hierarchy
+            basegfx::B3DHomMatrix aInBetweenSceneMatrix;
+            E3dScene* pParentScene(rObject.getParentE3dSceneFromE3dObject());
+
+            while(pParentScene && pParentScene != pScene)
+            {
+                aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
+                pParentScene = pParentScene->getParentE3dSceneFromE3dObject();
+            }
+
+            // build new ViewInformation containing all transforms
+            const drawinglayer::geometry::ViewInformation3D aNewViewInformation3D(
+                aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
+                aViewInfo3D.getOrientation(),
+                aViewInfo3D.getProjection(),
+                aViewInfo3D.getDeviceToView(),
+                aViewInfo3D.getViewTime(),
+                aViewInfo3D.getExtendedInformationSequence());
+
+            // create extractor helper, process geometry and get return value
+            drawinglayer::processor3d::MinimalDephInViewExtractor aExtractor(aNewViewInformation3D);
+            aExtractor.process(aPrimitives);
+            fRetval = aExtractor.getMinimalDepth();
+        }
+    }
+
+    return fRetval;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */