// ImageIO Function Definitions
std::unique_ptr<RGBSpectrum[]> ReadImage(const std::string &name,
Point2i *resolution) {
if (name.size() >= 5) {
size_t suffixOffset = name.size() - 4;
if (!strcmp(name.c_str() + suffixOffset, ".exr") ||
!strcmp(name.c_str() + suffixOffset, ".EXR"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImageEXR(name, &resolution->x, &resolution->y));
if (!strcmp(name.c_str() + suffixOffset, ".tga") ||
!strcmp(name.c_str() + suffixOffset, ".TGA"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImageTGA(name, &resolution->x, &resolution->y));
if (!strcmp(name.c_str() + suffixOffset, ".pfm") ||
!strcmp(name.c_str() + suffixOffset, ".PFM"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImagePFM(name, &resolution->x, &resolution->y));
}
Error(
"Unable to load image stored in format \"%s\" for filename \"%s\". "
"Returning a constant grey image instead.",
strrchr(name.c_str(), '.') ? (strrchr(name.c_str(), '.') + 1)
: "(unknown)",
name.c_str());
RGBSpectrum *ret = new RGBSpectrum[1];
ret[0] = RGBSpectrum(0.5f);
resolution->x = resolution->y = 1;
return std::unique_ptr<RGBSpectrum[]>(ret);
}
// ImageIO Function Definitions
std::unique_ptr<RGBSpectrum[]> ReadImage(const std::string &name,
Point2i *resolution) {
if (HasExtension(name, ".exr"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImageEXR(name, &resolution->x, &resolution->y));
else if (HasExtension(name, ".tga"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImageTGA(name, &resolution->x, &resolution->y));
else if (HasExtension(name, ".pfm"))
return std::unique_ptr<RGBSpectrum[]>(
ReadImagePFM(name, &resolution->x, &resolution->y));
Error(
"Unable to load image stored in format \"%s\" for filename \"%s\". "
"Returning a constant gray image instead.",
strrchr(name.c_str(), '.') ? (strrchr(name.c_str(), '.') + 1)
: "(unknown)",
name.c_str());
RGBSpectrum *ret = new RGBSpectrum[1];
ret[0] = RGBSpectrum(0.5f);
resolution->x = resolution->y = 1;
return std::unique_ptr<RGBSpectrum[]>(ret);
}
int main(int argc, char *argv[])
{
int nx, ny, ncha, cx, cy;
int xmin, xmax, ymin, ymax;
int x0,x1,y0,y1;
int cxy,nxy;
float *data, *d;
char flag_mc = 1;
if(argc < 6)
{
printf("not enough arguments...\n");
printf("usage:\n");
printf(" %s x0 y0 x1 y1 img-exr img-crop-exr\n",argv[0]);
exit(0);
}
data = readMultiImageEXR(argv[5], &nx, &ny, &ncha);
if (!data) {
data = ReadImageEXR(argv[5], &nx, &ny);
ncha = 3;
flag_mc = 0;
if(!data) {
printf("error :: %s not a correct exr image \n", argv[5]);
exit(-1);
}
}
x0 = atoi(argv[1]);
y0 = atoi(argv[2]);
x1 = atoi(argv[3]);
y1 = atoi(argv[4]);
xmin = MAX(0,MIN(x0,x1));
xmax = MIN(nx-1,MAX(x0,x1));
ymin = MAX(0,MIN(y0,y1));
ymax = MIN(ny-1,MAX(y0,y1));
cx = xmax - xmin;
cy = ymax - ymin;
printf("Cropping: xmin:%d xmax:%d ymin:%d ymax:%d\n",xmin,xmax,ymin,ymax);
//if cx or cy is negative parameters wrong
if(cx <= 0 || cy <= 0)
{
printf("error :: incorrect crop values\n");
exit(-1);
}
nxy = nx * ny;
cxy = cx * cy;
d = (float*)malloc(sizeof(float) * cxy * ncha);
/*Crop Image*/
for(int y=0;y<cy;y++)
for(int x=0;x<cx;x++)
for(int c=0;c<ncha;c++)
d[x + cx*y + cxy*c] = data[x + xmin + nx*(y+ymin) + nxy*c];
if(flag_mc)
{
writeMultiImageEXR(argv[6], d, cx, cy, ncha);
}
else
{
WriteImageEXR(argv[6], d, cx, cy);
}
free(data);
free(d);
return 0;
}
