gxcamera.h

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//
// Copyright (c) 2002-2004 California Institute of Technology
// Copyright (c) 2004-2007 University of Southern California
// Rob Peters <rjpeters at usc dot edu>
//
// created: Thu Nov 21 15:18:58 2002
// commit: $Id: gxcamera.h 10065 2007-04-12 05:54:56Z rjpeters $
// $HeadURL: file:///lab/rjpeters/svnrepo/code/trunk/groovx/src/gfx/gxcamera.h $
//
// --------------------------------------------------------------------
//
// This file is part of GroovX.
//   [http://ilab.usc.edu/rjpeters/groovx/]
//
// GroovX is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// GroovX is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GroovX; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//

#ifndef GROOVX_GFX_GXCAMERA_H_UTC20050626084024_DEFINED
#define GROOVX_GFX_GXCAMERA_H_UTC20050626084024_DEFINED

#include "geom/rect.h"

#include "gfx/gbvec.h"
#include "gfx/gxnode.h"

#include "io/fields.h"

namespace Gfx
{
  class Canvas;
}

// ########################################################


class GxCamera : public GxNode
{
public:
  GxCamera() : GxNode(), itsWidth(0), itsHeight(0) {}

  virtual ~GxCamera() throw();

  void reshape(Gfx::Canvas& canvas, int w, int h);

  int width() const { return itsWidth; }
  int height() const { return itsHeight; }

  virtual void getBoundingCube(Gfx::Bbox& /*bbox*/) const {}

private:
  int itsWidth;
  int itsHeight;
};

class GxPerspectiveCamera : public GxCamera, public FieldContainer
{
public:
  GxPerspectiveCamera();

  virtual ~GxPerspectiveCamera() throw();

  static GxPerspectiveCamera* make() { return new GxPerspectiveCamera; }

  static const FieldMap& classFields();

  virtual io::version_id class_version_id() const;
  virtual void read_from(io::reader& reader);
  virtual void write_to(io::writer& writer) const;

  virtual void draw(Gfx::Canvas& canvas) const;

private:
  double itsFovY;
  double itsNearZ;
  double itsFarZ;
  GbVec3<double> translation;
};

class GxFixedRectCamera : public GxCamera
{
public:
  GxFixedRectCamera() :
    GxCamera(),
    itsRect(geom::rect<double>::ltrb(-1.0, 1.0, 1.0, -1.0))
  {}

  virtual ~GxFixedRectCamera() throw();

  virtual void read_from(io::reader& /*reader*/) {}
  virtual void write_to(io::writer& /*writer*/) const {}

  void setRect(const geom::rect<double>& rect) { itsRect = rect; }

  const geom::rect<double>& getRect() const { return itsRect; }

  virtual void draw(Gfx::Canvas& canvas) const;

private:
  geom::rect<double> itsRect;
};

class GxMinRectCamera : public GxCamera
{
public:
  GxMinRectCamera() :
    GxCamera(),
    itsRect(geom::rect<double>::ltrb(-1.0, 1.0, 1.0, -1.0))
  {}

  virtual ~GxMinRectCamera() throw();

  virtual void read_from(io::reader& /*reader*/) {}
  virtual void write_to(io::writer& /*writer*/) const {}

  void setRect(const geom::rect<double>& rect) { itsRect = rect; }

  const geom::rect<double>& getRect() const { return itsRect; }

  virtual void draw(Gfx::Canvas& canvas) const;

private:
  geom::rect<double> itsRect;
};

class GxFixedScaleCamera : public GxCamera, public FieldContainer
{
public:
  GxFixedScaleCamera();

  virtual ~GxFixedScaleCamera() throw();

  static GxFixedScaleCamera* make() { return new GxFixedScaleCamera; }

  static const FieldMap& classFields();

  virtual io::version_id class_version_id() const;
  virtual void read_from(io::reader& reader);
  virtual void write_to(io::writer& writer) const;

  double getLogPixelsPerUnit() const;
  void setLogPixelsPerUnit(double s);

  double getPixelsPerUnit() const { return itsPixelsPerUnit; }
  void setPixelsPerUnit(double s);

  virtual void draw(Gfx::Canvas& canvas) const;

private:
  double itsPixelsPerUnit;
};


class GxPsyphyCamera : public GxCamera, public FieldContainer
{
public:
  GxPsyphyCamera();

  virtual ~GxPsyphyCamera() throw();

  static GxPsyphyCamera* make() { return new GxPsyphyCamera; }

  static const FieldMap& classFields();

  virtual io::version_id class_version_id() const;
  virtual void read_from(io::reader& reader);
  virtual void write_to(io::writer& writer) const;

  double getUnitAngle() const { return itsDegreesPerUnit; }
  void setUnitAngle(double deg_per_unit);

  double getViewingDistIn() const { return itsViewingDistance; }
  void setViewingDistIn(double inches);

  virtual void draw(Gfx::Canvas& canvas) const;

private:
  double itsDegreesPerUnit;
  double itsViewingDistance;    // inches
};

static const char __attribute__((used)) vcid_groovx_gfx_gxcamera_h_utc20050626084024[] = "$Id: gxcamera.h 10065 2007-04-12 05:54:56Z rjpeters $ $HeadURL: file:
#endif // !GROOVX_GFX_GXCAMERA_H_UTC20050626084024_DEFINED

---

The software described here is Copyright (c) 1998-2005, Rob Peters.
This page was generated Wed Dec 3 06:49:38 2008 by Doxygen version 1.5.5.