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/* -*- 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>
// predefines
namespace basegfx { class B3DRange; } // end of namespace basegfx
/*************************************************************************
|*
|* enums for projection and aspect ratio
|*
\************************************************************************/
enum ProjectionType { PR_PARALLEL, PR_PERSPECTIVE };
enum AspectMapType { AS_NO_MAPPING, AS_HOLD_SIZE, AS_HOLD_X, AS_HOLD_Y };
/*************************************************************************
|*
|* 3D-Viewport nach PHIGS
|*
\************************************************************************/
class SVX_DLLPUBLIC Viewport3D
{
protected:
basegfx::B3DHomMatrix aViewTf; // the real transformations matrix
basegfx::B3DPoint aVRP; // View Reference Point
basegfx::B3DVector aVPN; // View Plane Normal
basegfx::B3DVector aVUV; // View Up Vector
basegfx::B3DPoint aPRP; // Projection Reference Point(View-coordinates)
// up to now only the z-coordinate is considered
double fVPD; // View Plane Distance
double fNearClipDist; // distance of the near Clipping level
double fFarClipDist; // distance of the far Clipping level
ProjectionType eProjection; // kind of the projection
AspectMapType eAspectMapping; // flag for the acclimatization of the aspect ratio
// for display on the device
Rectangle aDeviceRect; // position and size of the output area
struct
{
double X, Y, W, H; // position and size of the view window
} aViewWin; // in view coordinates
basegfx::B3DPoint aViewPoint; //observers position in world coordinates;
// is calculated by the transformation
bool bTfValid; // flag, if transformation is valid
double fWRatio; // device/view aspect ratio
double fHRatio;
void MakeTransform();
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);
void SetVPD(double fNewVPD);
const basegfx::B3DPoint& GetVRP() const { return aVRP; }
const basegfx::B3DVector& GetVPN() const { return aVPN; }
const basegfx::B3DVector& GetVUV() const { return aVUV; }
const basegfx::B3DPoint& GetPRP() const { return aPRP; }
double GetVPD() const { return fVPD; }
double GetNearClipDist() const { return fNearClipDist; }
double GetFarClipDist() const { return fFarClipDist; }
void SetProjection(ProjectionType ePrj)
{ eProjection = ePrj; bTfValid = false; }
ProjectionType GetProjection() const { return eProjection; }
void SetAspectMapping(AspectMapType eAsp)
{ eAspectMapping = eAsp; bTfValid = false; }
AspectMapType GetAspectMapping() { return eAspectMapping; }
void SetViewWindow(double fX, double fY, double fW, double fH);
void SetDeviceWindow(const Rectangle& rRect);
const Rectangle& GetDeviceWindow() const { return aDeviceRect; }
// returns observers position in world coordinates
const basegfx::B3DPoint& GetViewPoint();
};
#endif // INCLUDED_SVX_VIEWPT3D_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
