drawinglayer/inc/processor3d/zbufferprocessor3d.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <processor3d/defaultprocessor3d.hxx>
  23 #include <basegfx/matrix/b3dhommatrix.hxx>
  24 #include <memory>
  25
  26 namespace basegfx {
  27     class BZPixelRaster;
  28 }
  29
  30 namespace drawinglayer::attribute {
  31         class SdrSceneAttribute;
  32         class SdrLightingAttribute;
  33         class MaterialAttribute3D;
  34 }
  35
  36
  37 class ZBufferRasterConverter3D;
  38 class RasterPrimitive3D;
  39
  40 namespace drawinglayer::processor3d
  41     {
  42         /**
  43             This 3D renderer derived from DefaultProcessor3D renders all fed primitives to a 2D
  44             raster bitmap using a Z-Buffer based approach. It is able to supersample and to handle
  45             transparent content.
  46          */
  47         class ZBufferProcessor3D final : public DefaultProcessor3D
  48         {
  49         private:
  50             /// inverse of EyeToView for rasterconversion with evtl. Phong shading
  51             basegfx::B3DHomMatrix maInvEyeToView;
  52
  53             /// The raster converter for Z-Buffer
  54             std::unique_ptr<ZBufferRasterConverter3D> mpZBufferRasterConverter3D;
  55
  56             /*  AA value. Defines how many oversamples will be used in X and Y. Values 0, 1
  57                 will switch it off while e.g. 2 will use 2x2 pixels for each pixel to create
  58               */
  59             sal_uInt16 mnAntiAlialize;
  60
  61             /*  remembered RasterPrimitive3D's which need to be painted back to front
  62                 for transparent 3D parts
  63              */
  64             mutable std::vector< RasterPrimitive3D > maRasterPrimitive3Ds;
  65
  66             sal_uInt32 mnStartLine;
  67             sal_uInt32 mnStopLine;
  68
  69             // rasterconversions for filled and non-filled polygons
  70
  71             virtual void rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const override;
  72             virtual void rasterconvertB3DPolyPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolyPolygon& rFill) const override;
  73
  74         public:
  75             ZBufferProcessor3D(
  76                 const geometry::ViewInformation3D& rViewInformation3D,
  77                 const attribute::SdrSceneAttribute& rSdrSceneAttribute,
  78                 const attribute::SdrLightingAttribute& rSdrLightingAttribute,
  79                 const basegfx::B2DRange& rVisiblePart,
  80                 sal_uInt16 nAntiAlialize,
  81                 double fFullViewSizeX,
  82                 double fFullViewSizeY,
  83                 basegfx::BZPixelRaster& rBZPixelRaster,
  84                 sal_uInt32 nStartLine,
  85                 sal_uInt32 nStopLine);
  86             virtual ~ZBufferProcessor3D() override;
  87
  88             void finish();
  89         };
  90
  91 }
  92
  93 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */