pnmPainter.h

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file pnmPainter.h
 * @author drose
 * @date 2007-02-02
 */

#ifndef PNMPAINTER_H
#define PNMPAINTER_H

#include "pandabase.h"
#include "pnmBrush.h"

class PNMImage;

/**
 * This class provides a number of convenient methods for painting drawings
 * directly into a PNMImage.
 *
 * It stores a pointer to the PNMImage you pass it, but it does not take
 * ownership of the object; you are responsible for ensuring that the PNMImage
 * does not destruct during the lifetime of the PNMPainter object.
 */
class EXPCL_PANDA_PNMIMAGE PNMPainter {
PUBLISHED:
  explicit PNMPainter(PNMImage &image, int xo = 0, int yo = 0);
  INLINE ~PNMPainter();

  INLINE void set_pen(PNMBrush *pen);
  INLINE PNMBrush *get_pen() const;
  INLINE void set_fill(PNMBrush *fill);
  INLINE PNMBrush *get_fill() const;

  MAKE_PROPERTY(pen, get_pen, set_pen);
  MAKE_PROPERTY(fill, get_fill, set_fill);

  INLINE void draw_point(float x, float y);
  void draw_line(float xa, float ya, float xb, float yb);
  void draw_rectangle(float xa, float ya, float xb, float yb);

private:
  INLINE void draw_hline_point(int x, float xa, float ya,
                               float xd, float yd,
                               float pixel_scale);
  INLINE void draw_vline_point(int y, float xa, float ya,
                               float xd, float yd,
                               float pixel_scale);

private:
  PNMImage &_image;
  int _xo, _yo;

  PT(PNMBrush) _pen;
  PT(PNMBrush) _fill;
};

#include "pnmPainter.I"

#endif