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Diffstat (limited to 'drawinglayer/source/processor3d/cutfindprocessor3d.cxx')
| -rw-r--r-- | drawinglayer/source/processor3d/cutfindprocessor3d.cxx | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/drawinglayer/source/processor3d/cutfindprocessor3d.cxx b/drawinglayer/source/processor3d/cutfindprocessor3d.cxx new file mode 100644 index 000000000..cb1f737f5 --- /dev/null +++ b/drawinglayer/source/processor3d/cutfindprocessor3d.cxx @@ -0,0 +1,192 @@ +/* -*- 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 <drawinglayer/processor3d/cutfindprocessor3d.hxx> +#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx> +#include <drawinglayer/primitive3d/transformprimitive3d.hxx> +#include <primitive3d/hatchtextureprimitive3d.hxx> +#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx> +#include <basegfx/polygon/b3dpolygon.hxx> +#include <basegfx/polygon/b3dpolygontools.hxx> +#include <basegfx/polygon/b3dpolypolygontools.hxx> +#include <primitive3d/hiddengeometryprimitive3d.hxx> + + +namespace drawinglayer::processor3d +{ + CutFindProcessor::CutFindProcessor(const geometry::ViewInformation3D& rViewInformation, + const basegfx::B3DPoint& rFront, + const basegfx::B3DPoint& rBack, + bool bAnyHit) + : BaseProcessor3D(rViewInformation), + maFront(rFront), + maBack(rBack), + mbAnyHit(bAnyHit) + { + } + + void CutFindProcessor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate) + { + if(mbAnyHit && !maResult.empty()) + { + // stop processing as soon as a hit was recognized + return; + } + + // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch + switch(rCandidate.getPrimitive3DID()) + { + case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D : + { + // transform group. + const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate); + + // remember old and transform front, back to object coordinates + const basegfx::B3DPoint aLastFront(maFront); + const basegfx::B3DPoint aLastBack(maBack); + basegfx::B3DHomMatrix aInverseTrans(rPrimitive.getTransformation()); + aInverseTrans.invert(); + maFront *= aInverseTrans; + maBack *= aInverseTrans; + + // remember current and create new transformation; add new object transform from right side + const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D()); + const geometry::ViewInformation3D aNewViewInformation3D( + aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(), + aLastViewInformation3D.getOrientation(), + aLastViewInformation3D.getProjection(), + aLastViewInformation3D.getDeviceToView(), + aLastViewInformation3D.getViewTime(), + aLastViewInformation3D.getExtendedInformationSequence()); + updateViewInformation(aNewViewInformation3D); + + // #i102956# remember needed back-transform for found cuts (combine from right side) + const basegfx::B3DHomMatrix aLastCombinedTransform(maCombinedTransform); + maCombinedTransform = maCombinedTransform * rPrimitive.getTransformation(); + + // let break down + process(rPrimitive.getChildren()); + + // restore transformations and front, back + maCombinedTransform = aLastCombinedTransform; + updateViewInformation(aLastViewInformation3D); + maFront = aLastFront; + maBack = aLastBack; + break; + } + case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D : + { + // PolygonHairlinePrimitive3D, not used for hit test with planes, ignore. This + // means that also thick line expansion will not be hit-tested as + // PolyPolygonMaterialPrimitive3D + break; + } + case PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D : + { + // #i97321# + // For HatchTexturePrimitive3D, do not use the decomposition since it will produce + // clipped hatch lines in 3D. It can be used when the hatch also has a filling, but for + // simplicity, just use the children which are the PolyPolygonMaterialPrimitive3D + // which define the hatched areas anyways; for HitTest this is more than adequate + const primitive3d::HatchTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::HatchTexturePrimitive3D& >(rCandidate); + process(rPrimitive.getChildren()); + break; + } + case PRIMITIVE3D_ID_HIDDENGEOMETRYPRIMITIVE3D : + { + // HiddenGeometryPrimitive3D; the default decomposition would return an empty sequence, + // so force this primitive to process its children directly if the switch is set + // (which is the default). Else, ignore invisible content + const primitive3d::HiddenGeometryPrimitive3D& rHiddenGeometry(static_cast< const primitive3d::HiddenGeometryPrimitive3D& >(rCandidate)); + const primitive3d::Primitive3DContainer& rChildren = rHiddenGeometry.getChildren(); + + if(!rChildren.empty()) + { + process(rChildren); + } + + break; + } + case PRIMITIVE3D_ID_UNIFIEDTRANSPARENCETEXTUREPRIMITIVE3D : + { + const primitive3d::UnifiedTransparenceTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::UnifiedTransparenceTexturePrimitive3D& >(rCandidate); + const primitive3d::Primitive3DContainer& rChildren = rPrimitive.getChildren(); + + if(!rChildren.empty()) + { + process(rChildren); + } + + break; + } + case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D : + { + // PolyPolygonMaterialPrimitive3D + const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate); + + if(!maFront.equal(maBack)) + { + const basegfx::B3DPolyPolygon& rPolyPolygon = rPrimitive.getB3DPolyPolygon(); + const sal_uInt32 nPolyCount(rPolyPolygon.count()); + + if(nPolyCount) + { + const basegfx::B3DPolygon& aPolygon(rPolyPolygon.getB3DPolygon(0)); + const sal_uInt32 nPointCount(aPolygon.count()); + + if(nPointCount > 2) + { + const basegfx::B3DVector aPlaneNormal(aPolygon.getNormal()); + + if(!aPlaneNormal.equalZero()) + { + const basegfx::B3DPoint aPointOnPlane(aPolygon.getB3DPoint(0)); + double fCut(0.0); + + if(basegfx::utils::getCutBetweenLineAndPlane(aPlaneNormal, aPointOnPlane, maFront, maBack, fCut)) + { + const basegfx::B3DPoint aCutPoint(basegfx::interpolate(maFront, maBack, fCut)); + + if(basegfx::utils::isInside(rPolyPolygon, aCutPoint)) + { + // #i102956# add result. Do not forget to do this in the coordinate + // system the processor get started with, so use the collected + // combined transformation from processed TransformPrimitive3D's + maResult.push_back(maCombinedTransform * aCutPoint); + } + } + } + } + } + } + + break; + } + default : + { + // process recursively + process(rCandidate.get3DDecomposition(getViewInformation3D())); + break; + } + } + } + +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |