ximasel.cpp

对CFileException进行修改后 这个血管提取的程序已经可以在VC8下面编译了 但是还有点内存泄露 没有进行修正 等有时间了在进行修改

		if (current->y < next->y) {r2.bottom=current->y; r2.top=next->y; } else {r2.bottom=next->y ; r2.top=current->y; }
		if (localbox.top < r2.top) localbox.top = max(0L,min(head.biHeight-1,r2.top+1));
		if (localbox.left > r2.left) localbox.left = max(0L,min(head.biWidth-1,r2.left-1));
		if (localbox.right < r2.right) localbox.right = max(0L,min(head.biWidth-1,r2.right+1));
		if (localbox.bottom > r2.bottom) localbox.bottom = max(0L,min(head.biHeight-1,r2.bottom-1));

		i++;
	}

	//fill the outer region
	long npix=(localbox.right - localbox.left)*(localbox.top - localbox.bottom);
	POINT* pix = (POINT*)calloc(npix,sizeof(POINT));
	BYTE back=0, mark=1;
	long fx, fy, fxx, fyy, first, last,xmin,xmax,ymin,ymax;

	for (int side=0; side<4; side++){
		switch(side){
		case 0:
			xmin=localbox.left; xmax=localbox.right+1; ymin=localbox.bottom; ymax=localbox.bottom+1;
			break;
		case 1:
			xmin=localbox.right; xmax=localbox.right+1; ymin=localbox.bottom; ymax=localbox.top+1;
			break;
		case 2:
			xmin=localbox.left; xmax=localbox.right+1; ymin=localbox.top; ymax=localbox.top+1;
			break;
		case 3:
			xmin=localbox.left; xmax=localbox.left+1; ymin=localbox.bottom; ymax=localbox.top+1;
			break;
		}
		//fill from the border points
		for(y=ymin;y<ymax;y++){
			for(x=xmin;x<xmax;x++){
				if (plocal[x+y*head.biWidth]==0){
					// Subject: FLOOD FILL ROUTINE              Date: 12-23-97 (00:57)       
					// Author:  Petter Holmberg                 Code: QB, QBasic, PDS        
					// Origin:  [e-mail]         Packet: GRAPHICS.ABC
					first=0;
					last=1;
					while(first!=last){
						fx = pix[first].x;
						fy = pix[first].y;
						fxx = fx + x;
						fyy = fy + y;
						do {
							if ((plocal[fxx + fyy*head.biWidth] == back) &&
								fxx>=localbox.left && fxx<=localbox.right && fyy>=localbox.bottom && fyy<=localbox.top )
							{
								plocal[fxx + fyy*head.biWidth] = mark;
								if (fyy > 0 && plocal[fxx + (fyy - 1)*head.biWidth] == back){
									pix[last].x = fx;
									pix[last].y = fy - 1;
									last++;
									if (last == npix) last = 0;
								}
								if ((fyy + 1)<head.biHeight && plocal[fxx + (fyy + 1)*head.biWidth] == back){
									pix[last].x = fx;
									pix[last].y = fy + 1;
									last++;
									if (last == npix) last = 0;
								}
							} else {
								break;
							}
							fx++;
							fxx++;
						} while(1);

						fx = pix[first].x - 1;
						fy = pix[first].y;
						fxx = fx + x;
						fyy = fy + y;

						do {
							if ((plocal[fxx + fyy*head.biWidth] == back) &&
								fxx>=localbox.left && fxx<=localbox.right && fyy>=localbox.bottom && fyy<=localbox.top )
							{
								plocal[fxx + (y + fy)*head.biWidth] = mark;
								if (fyy > 0 && plocal[fxx + (fyy - 1)*head.biWidth] == back){
									pix[last].x = fx;
									pix[last].y = fy - 1;
									last++;
									if (last == npix) last = 0;
								}
								if ((fyy + 1)<head.biHeight && plocal[fxx + (fyy + 1)*head.biWidth] == back){
									pix[last].x = fx;
									pix[last].y = fy + 1;
									last++;
									if (last == npix) last = 0;
								}
							} else {
								break;
							}
							fx--;
							fxx--;
						} while(1);
						
						first++;
						if (first == npix) first = 0;
					}
				}
			}
		}
	}

	//transfer the region
	long yoffset;
	for (y=localbox.bottom; y<=localbox.top; y++){
		yoffset = y * head.biWidth;
		for (x=localbox.left; x<=localbox.right; x++)
			if (plocal[x + yoffset]!=1) pSelection[x + yoffset]=255;
	}
	if (info.rSelectionBox.top < localbox.top) info.rSelectionBox.top = localbox.top+1;
	if (info.rSelectionBox.left > localbox.left) info.rSelectionBox.left = localbox.left;
	if (info.rSelectionBox.right < localbox.right) info.rSelectionBox.right = localbox.right+1;
	if (info.rSelectionBox.bottom > localbox.bottom) info.rSelectionBox.bottom = localbox.bottom;

	free(plocal);
	free(pix);

	return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
 * Adds to the selection all the pixels matching the specified color.
 */
bool CxImage::SelectionAddColor(RGBQUAD c)
{
    if (pSelection==NULL) SelectionCreate();
	if (pSelection==NULL) return false;

	RECT localbox = {head.biWidth,0,0,head.biHeight};

    for (long y = 0; y < head.biHeight; y++){
        for (long x = 0; x < head.biWidth; x++){
            RGBQUAD color = GetPixelColor(x, y);
            if (color.rgbRed   == c.rgbRed &&
				color.rgbGreen == c.rgbGreen &&
                color.rgbBlue  == c.rgbBlue)
            {
                pSelection[x + y * head.biWidth] = 255; // set the correct mask bit

				if (localbox.top < y) localbox.top = y;
				if (localbox.left > x) localbox.left = x;
				if (localbox.right < x) localbox.right = x;
				if (localbox.bottom > y) localbox.bottom = y;
            }
        }
    }

	if (info.rSelectionBox.top < localbox.top) info.rSelectionBox.top = localbox.top;
	if (info.rSelectionBox.left > localbox.left) info.rSelectionBox.left = localbox.left;
	if (info.rSelectionBox.right < localbox.right) info.rSelectionBox.right = localbox.right;
	if (info.rSelectionBox.bottom > localbox.bottom) info.rSelectionBox.bottom = localbox.bottom;

	return true;
}
////////////////////////////////////////////////////////////////////////////////
/**
 * Adds a single pixel to the existing selection.
 */
bool CxImage::SelectionAddPixel(int x, int y)
{
    if (pSelection==NULL) SelectionCreate();
	if (pSelection==NULL) return false;

    if (IsInside(x,y)) {
        pSelection[x + y * head.biWidth] = 255; // set the correct mask bit
        return true;
    }

    return false;
}
////////////////////////////////////////////////////////////////////////////////
/**
 * Exports the selection channel in a 8bpp grayscale image.
 */
bool CxImage::SelectionSplit(CxImage *dest)
{
	if (!pSelection || !dest) return false;

	CxImage tmp(head.biWidth,head.biHeight,8);
	if (!tmp.IsValid()) return false;

	for(long y=0; y<head.biHeight; y++){
		for(long x=0; x<head.biWidth; x++){
			tmp.SetPixelIndex(x,y,pSelection[x+y*head.biWidth]);
		}
	}

	tmp.SetGrayPalette();
	dest->Transfer(tmp);

	return true;
}
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_WINDOWS
/**
 * Converts the selection in a HRGN object.
 */
bool CxImage::SelectionToHRGN(HRGN& region)
{
	if (pSelection && region){           
        for(int y = 0; y < head.biHeight; y++){
            HRGN hTemp = NULL;
            int iStart = -1;
            int x = 0;
			for(; x < head.biWidth; x++){
                if (pSelection[x + y * head.biWidth] == 255){
					if (iStart == -1) iStart = x;
					continue;
                }else{
                    if (iStart >= 0){
                        hTemp = CreateRectRgn(iStart, y, x, y + 1);
                        CombineRgn(region, hTemp, region, RGN_OR);
                        DeleteObject(hTemp);
                        iStart = -1;
                    }
                }
            }
            if (iStart >= 0){
                hTemp = CreateRectRgn(iStart, y, x, y + 1);
                CombineRgn(region, hTemp, region, RGN_OR);
                DeleteObject(hTemp);
                iStart = -1;
            }
        }
		return true;
    }
	return false;
}
#endif //CXIMAGE_SUPPORT_WINDOWS
////////////////////////////////////////////////////////////////////////////////
#endif //CXIMAGE_SUPPORT_SELECTION