Show GLImageItterator.cpp 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
////////////////////////////////////////////////////////////////////////////////
#include <GLEXT/GLImageItterator.h>
GLImageItterator::GLImageItterator(GLImage &bitmap,
int destX,
int destY,
Type type)
: bitmap_(bitmap), type_(type)
{
if (type == stretch)
{
dx_ = (float) bitmap.getWidth() / (float) destX;
dy_ = (float) bitmap.getHeight() / (float) destY;
}
else
{
dx_ = 1;
dy_ = 1;
}
width_ = 3 * bitmap.getWidth();
width_ = (width_ + 3) & ~3;
reset();
}
GLImageItterator::~GLImageItterator()
{
}
void GLImageItterator::reset()
{
posX_ = posY_ = 0.0f;
pos_ = bitmap_.getBits();
}
void GLImageItterator::incX()
{
posX_ += dx_;
if (posX_ >= bitmap_.getWidth()) posX_ = 0.0f;
}
void GLImageItterator::incY()
{
posX_ = 0.0f;
posY_ += dy_;
if (posY_ >= bitmap_.getHeight()) posY_ = 0.0f;
pos_ = (unsigned char *) (bitmap_.getBits() + ((int) posY_ * width_));
}
unsigned char *GLImageItterator::getPos()
{
return pos_ + (int) posX_ * 3;
}
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