thirdparty/scummvm
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

GRAPHICS: Added FloodFill class to Surface.

Browse source 
Moved from WAGE engine and is using stack-based classic floodfill
implementation.
This commit is contained in:
Eugene Sandulenko 2016-06-02 23:44:43 +02:00
parent 2c7976e4e9
commit 531b190d59
4 changed files with 78 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

60
graphics/surface.cpp
View file

@ -498,4 +498,64 @@ Graphics::Surface *Surface::convertTo(const PixelFormat &dstFormat, const byte *
return surface;
}
FloodFill::FloodFill(Graphics::Surface *surface, uint32 oldColor, uint32 fillColor) {
_surface = surface;
_oldColor = oldColor;
_fillColor = fillColor;
_w = surface->w;
_h = surface->h;
_visited = (byte *)calloc(_w * _h, 1);
}
FloodFill::~FloodFill() {
while(!_queue.empty()) {
Common::Point *p = _queue.front();
delete p;
_queue.pop_front();
}
free(_visited);
}
void FloodFill::addSeed(int x, int y) {
if (x >= 0 && x < _w && y >= 0 && y < _h) {
if (!_visited[y * _w + x]) {
_visited[y * _w + x] = 1;
void *p = _surface->getBasePtr(x, y);
if (_surface->format.bytesPerPixel == 1) {
if (*((byte *)p) == _oldColor)
*((byte *)p) = _fillColor;
} else if (_surface->format.bytesPerPixel == 2) {
if (READ_UINT16(p) == _oldColor)
WRITE_UINT16(p, _fillColor);
} else if (_surface->format.bytesPerPixel == 4) {
if (READ_UINT32(p) == _oldColor)
WRITE_UINT32(p, _fillColor);
} else {
error("Unsupported bpp in FloodFill");
}
Common::Point *pt = new Common::Point(x, y);
_queue.push_back(pt);
}
}
}
void FloodFill::fill() {
while (!_queue.empty()) {
Common::Point *p = _queue.front();
_queue.pop_front();
addSeed(p->x , p->y - 1);
addSeed(p->x - 1, p->y );
addSeed(p->x , p->y + 1);
addSeed(p->x + 1, p->y );
delete p;
}
}
} // End of namespace Graphics