Show GLImageItterator.h syntax highlighted
////////////////////////////////////////////////////////////////////////////////
// Scorched3D (c) 2000-2003
//
// This file is part of Scorched3D.
//
// Scorched3D 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.
//
// Scorched3D 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 Scorched3D; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
#if !defined(AFX_GLImageITTERATOR_H__F83D9F30_02DF_44EC_B2E7_1F4D87D6FBC8__INCLUDED_)
#define AFX_GLImageITTERATOR_H__F83D9F30_02DF_44EC_B2E7_1F4D87D6FBC8__INCLUDED_
#include <GLEXT/GLImage.h>
/**
A helper class that simplifes the iteration (looping) through
the components contained within bitmap files.
GLImageItterator bitmapItor(myBitmap,
myRequiredWidth, myRequiredHeight, myRequiredType);
for (int by=0; by<myRequiredHeight; by++, bitmapItor.incY())
{
for (int bx=0; bx<myRequiredWidth; bx++, bitmapItor.incX())
{
// Get the bytes at bx, by position in the bitmap.
// This will be an array of 3 or 4 bytes depending
// on the bitmap type.
unsigned char *sourceBits = bitmapItor.getPos();
}
}
*/
class GLImageItterator
{
public:
/**
Defines the type of the iteration.
Wrap - The bitmap is tiled/repeated if it is smaller
than the given destX/destY sizes.
Stretch - The bitmap extents are stretched to
match the destX and destY sizes.
*/
enum Type
{
wrap,
stretch
};
/**
DestX is the maximum width you will ask the iterator to return.
DestY is the maximum height you will ask the iterator to return.
Type defines how these width/height maps the bitmaps size.
*/
GLImageItterator(GLImage &bitmap,
int destX,
int destY,
Type type = stretch);
virtual ~GLImageItterator();
/**
Reset the iterator.
*/
void reset();
/**
Position the iterator at the next bitmap bytes in the row.
*/
void incX();
/**
Position the iterator at the next row.
*/
void incY();
/**
Get the bytes at the current iterator's position.
*/
unsigned char *getPos();
protected:
GLImage &bitmap_;
float dx_, dy_;
int width_;
Type type_;
unsigned char *pos_;
float posX_, posY_;
};
#endif // !defined(AFX_GLImageITTERATOR_H__F83D9F30_02DF_44EC_B2E7_1F4D87D6FBC8__INCLUDED_)
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