/* -*- 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 .
*/
#ifndef INCLUDED_SVX_VIEWPT3D_HXX
#define INCLUDED_SVX_VIEWPT3D_HXX
#include <svx/svxdllapi.h>
#include <basegfx/matrix/b3dhommatrix.hxx>
#include <basegfx/point/b3dpoint.hxx>
#include <basegfx/vector/b3dvector.hxx>
#include <tools/gen.hxx>
/*************************************************************************
|*
|* enums for projection
|*
\************************************************************************/
enum class ProjectionType { Parallel, Perspective };
/*************************************************************************
|*
|* 3D viewport according to PHIGS
|*
\************************************************************************/
class SVXCORE_DLLPUBLIC Viewport3D
{
protected:
basegfx::B3DHomMatrix m_aViewTf;
// the real transformations matrix
basegfx::B3DPoint m_aVRP;
// View Reference Point
basegfx::B3DVector m_aVPN;
// View Plane Normal
basegfx::B3DVector m_aVUV;
// View Up Vector
basegfx::B3DPoint m_aPRP;
// Projection Reference Point(View-coordinates)
// up to now only the z-coordinate is considered
ProjectionType m_eProjection;
// kind of the projection
tools::Rectangle m_aDeviceRect;
// position and size of the output area
struct
{
double X, Y, W, H;
// position and size of the view window
} m_aViewWin;
// in view coordinates
basegfx::B3DPoint m_aViewPoint;
//observers position in world coordinates;
// is calculated by the transformation
bool m_bTfValid;
// flag, if transformation is valid
public:
Viewport3D();
void SetVRP(
const basegfx::B3DPoint& rNewVRP);
void SetVPN(
const basegfx::B3DVector& rNewVPN);
void SetVUV(
const basegfx::B3DVector& rNewVUV);
void SetPRP(
const basegfx::B3DPoint& rNewPRP);
const basegfx::B3DPoint& GetVRP()
const {
return m_aVRP; }
const basegfx::B3DVector& GetVUV()
const {
return m_aVUV; }
void SetProjection(ProjectionType ePrj)
{ m_eProjection = ePrj; m_bTfValid =
false; }
ProjectionType GetProjection()
const {
return m_eProjection; }
void SetViewWindow(
double fX,
double fY,
double fW,
double fH);
void SetDeviceWindow(
const tools::Rectangle& rRect);
const tools::Rectangle& GetDeviceWindow()
const {
return m_aDeviceRect; }
// returns observers position in world coordinates
const basegfx::B3DPoint& GetViewPoint();
};
#endif // INCLUDED_SVX_VIEWPT3D_HXX
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