100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
/***************************************************************************
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* Copyright (c) 2005 Imetric 3D GmbH *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef BASE_VIEWPROJ_H
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#define BASE_VIEWPROJ_H
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#include "Vector3D.h"
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#include "Matrix.h"
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namespace Base {
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/**
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* Abstract base class for all project methods.
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*/
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class BaseExport ViewProjMethod
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{
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public:
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virtual ~ViewProjMethod(){}
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virtual bool isValid() const { return true; }
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/** Convert 3D point to 2D projection plane */
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virtual Vector3f operator()(const Vector3f &rclPt) const = 0;
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/** Convert 3D point to 2D projection plane */
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virtual Vector3d operator()(const Vector3d &rclPt) const = 0;
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/** Convert a 2D point on the projection plane in 3D space */
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virtual Vector3f inverse (const Vector3f &rclPt) const = 0;
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/** Convert a 2D point on the projection plane in 3D space */
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virtual Vector3d inverse (const Vector3d &rclPt) const = 0;
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/** Calculate the projection (+ mapping) matrix */
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virtual Matrix4D getProjectionMatrix (void) const = 0;
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protected:
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ViewProjMethod(){}
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};
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/**
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* The ViewProjMatrix class returns the result of the multiplication
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* of the 3D vector and the view transformation matrix.
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*/
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class BaseExport ViewProjMatrix : public ViewProjMethod
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{
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public:
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ViewProjMatrix (const Matrix4D &rclMtx) : _clMtx(rclMtx) { _clMtxInv = _clMtx; _clMtxInv.inverse(); }
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virtual ~ViewProjMatrix(){}
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inline Vector3f operator()(const Vector3f &rclPt) const;
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inline Vector3d operator()(const Vector3d &rclPt) const;
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inline Vector3f inverse (const Vector3f &rclPt) const;
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inline Vector3d inverse (const Vector3d &rclPt) const;
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Matrix4D getProjectionMatrix (void) const { return _clMtx; }
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protected:
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Matrix4D _clMtx, _clMtxInv;
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};
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inline Vector3f ViewProjMatrix::operator()(const Vector3f &rclPt) const
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{
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return Vector3f(_clMtx * rclPt);
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}
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inline Vector3d ViewProjMatrix::operator()(const Vector3d &rclPt) const
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{
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return Vector3d(_clMtx * rclPt);
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}
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inline Vector3f ViewProjMatrix::inverse (const Vector3f &rclPt) const
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{
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return Vector3f(_clMtxInv * rclPt);
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}
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inline Vector3d ViewProjMatrix::inverse (const Vector3d &rclPt) const
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{
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return Vector3d(_clMtxInv * rclPt);
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}
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} // namespace Base
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#endif // BASE_VIEWPROJ_H
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