/**
* @brief Write imgage.
* @details Write compostied image to the file system.
*/
void writeImage() {
// Transfer to something OpenImageIO understands
oiioPixels.resize(newWidth*newHeight*4*sizeof(float));
for (int row = 0; row < newHeight; row++)
for (int col = 0; col < newWidth; col++){
oiioPixels[(row*newWidth+col)*4 + 0] = warppedPixels[row][col].r;
oiioPixels[(row*newWidth+col)*4 + 1] = warppedPixels[row][col].g;
oiioPixels[(row*newWidth+col)*4 + 2] = warppedPixels[row][col].b;
oiioPixels[(row*newWidth+col)*4 + 3] = warppedPixels[row][col].a;
}
// Create output image
ImageOutput *out = ImageOutput::create(outImage);
// Error handeling
if (!out) {
printf("Error writing image: %s\n", geterror().c_str());
exit(EXIT_FAILURE);
}
// Create output image spec
ImageSpec spec (newWidth, newHeight, 4, TypeDesc::FLOAT);
// Open output image file
out->open(outImage, spec);
// Write output image to disk and close
out->write_image(TypeDesc::FLOAT, &oiioPixels[0]);
out->close();
delete out;
}
void Ibl::Simulate(std::string const& filename)
{
auto width = 2000U;
auto height = 1000U;
std::vector<float> data(width * height);
std::fill(data.begin(), data.end(), 0.f);
for (int i = 0; i < 100000; ++i)
{
auto xy = SampleCoord(RadeonRays::float2(RadeonRays::rand_float(), RadeonRays::rand_float()));
data[xy.y * width + xy.x] += 1.f;
}
using namespace OpenImageIO;
ImageOutput* out = ImageOutput::create(filename);
if (!out)
{
throw std::runtime_error("Can't create image file on disk");
}
ImageSpec spec(width, height, 1, TypeDesc::UINT8);
out->open(filename, spec);
out->write_image(TypeDesc::FLOAT, &data[0]);
out->close();
delete out;
}
void lux::writeOIIOImage( const char* fname, Image& img, const map<string,string>& labels, float displayBrightness, float displayGamma )
{
float* imagedata = new float[ img.Width()* img.Height() * 3 ];
// fill image with the contents of img
long index = 0;
for( int j=0;j<img.Height();j++ )
{
for( int i=0;i<img.Width();i++ )
{
vector<float> pix = img.pixel(i,img.Height() - j - 1);
for( size_t c=0;c<3;c++ )
{
pix[c] = imagePlaneValue( pix[c], displayGamma, displayBrightness );
imagedata[index++] = pix[c];
}
}
}
ImageOutput *out = ImageOutput::create (fname);
if( !out )
{
cout << "Not able to write an image to file " << fname << endl;
}
else
{
ImageSpec spec (img.Width(), img.Height(), 3, TypeDesc::FLOAT);
spec.attribute("user", "imageTools");
spec.attribute("writer", "OIIOFiles" );
if( labels.size() > 0 )
{
map<string,string>::const_iterator lab = labels.begin();
while( lab != labels.end() )
{
const string& name = lab->first;
const string& value = lab->second;
spec.attribute( name, value );
lab++;
}
}
out->open (fname, spec);
out->write_image (TypeDesc::FLOAT, imagedata);
out->close ();
cout <<endl<<endl<< "File " << fname << " written to file"<< endl;
delete out;
}
delete[] imagedata;
}
void SaveFrameBuffer(std::string const& name, float3 const* data)
{
OIIO_NAMESPACE_USING;
std::vector<float3> tempbuf(g_window_width * g_window_height);
tempbuf.assign(data, data + g_window_width*g_window_height);
ImageOutput* out = ImageOutput::create(name);
if (!out)
{
throw std::runtime_error("Can't create image file on disk");
}
ImageSpec spec(g_window_width, g_window_height, 3, TypeDesc::FLOAT);
out->open(name, spec);
out->write_image(TypeDesc::FLOAT, &tempbuf[0], sizeof(float3));
out->close();
}
void Ibl::DumpPdf(std::string const& filename)
{
auto width = 2000U;
auto height = 1000U;
std::vector<float> data(width * height);
for (auto x = 0U; x < width; ++x)
for (auto y = 0U; y < height; ++y)
{
data[y * width + x] = GetPdf(RadeonRays::float2((float)x / m_width, (float)y / m_height));
}
auto max = std::max_element(data.cbegin(), data.cend());
std::for_each(data.begin(), data.end(), [=](float& v)
{
v /= *max;
});
using namespace OpenImageIO;
ImageOutput* out = ImageOutput::create(filename);
if (!out)
{
throw std::runtime_error("Can't create image file on disk");
}
ImageSpec spec(width, height, 1, TypeDesc::UINT8);
out->open(filename, spec);
out->write_image(TypeDesc::FLOAT, &data[0]);
out->close();
delete out;
}
int main (int argc, const char *argv[]) {
Timer timer;
// Create a new shading system. We pass it the RendererServices
// object that services callbacks from the shading system, NULL for
// the TextureSystem (which will create a default OIIO one), and
// an error handler.
shadingsys = new ShadingSystem (&rend, NULL, &errhandler);
// Register the layout of all closures known to this renderer
// Any closure used by the shader which is not registered, or
// registered with a different number of arguments will lead
// to a runtime error.
register_closures(shadingsys);
// Remember that each shader parameter may optionally have a
// metadata hint [[int lockgeom=...]], where 0 indicates that the
// parameter may be overridden by the geometry itself, for example
// with data interpolated from the mesh vertices, and a value of 1
// means that it is "locked" with respect to the geometry (i.e. it
// will not be overridden with interpolated or
// per-geometric-primitive data).
//
// In order to most fully optimize shader, we typically want any
// shader parameter not explicitly specified to default to being
// locked (i.e. no per-geometry override):
shadingsys->attribute("lockgeom", 1);
// Read command line arguments
getargs (argc, argv);
// Setup common attributes
shadingsys->attribute ("debug", debug2 ? 2 : (debug ? 1 : 0));
shadingsys->attribute ("compile_report", debug|debug2);
const char *opt_env = getenv ("TESTSHADE_OPT"); // overrides opt
if (opt_env)
shadingsys->attribute ("optimize", atoi(opt_env));
else if (O0 || O1 || O2)
shadingsys->attribute ("optimize", O2 ? 2 : (O1 ? 1 : 0));
shadingsys->attribute ("debugnan", debugnan);
// Loads a scene, creating camera, geometry and assigning shaders
parse_scene();
// validate options
if (aa < 1) aa = 1;
if (num_threads < 1)
num_threads = boost::thread::hardware_concurrency();
// prepare background importance table (if requested)
if (backgroundResolution > 0 && backgroundShaderID >= 0) {
// get a context so we can make several background shader calls
OSL::PerThreadInfo *thread_info = shadingsys->create_thread_info();
ShadingContext *ctx = shadingsys->get_context (thread_info);
// build importance table to optimize background sampling
background.prepare(backgroundResolution, eval_background, ctx);
// release context
shadingsys->release_context (ctx);
shadingsys->destroy_thread_info(thread_info);
} else {
// we aren't directly evaluating the background
backgroundResolution = 0;
}
double setuptime = timer.lap ();
std::vector<Color3> pixels(xres * yres, Color3(0,0,0));
// Create shared counter to iterate over one scanline at a time
Counter scanline_counter(errhandler, yres, "Rendering");
// launch a scanline worker for each thread
boost::thread_group workers;
for (int i = 0; i < num_threads; i++)
workers.add_thread(new boost::thread(scanline_worker, boost::ref(scanline_counter), boost::ref(pixels)));
workers.join_all();
// Write image to disk
ImageOutput* out = ImageOutput::create(imagefile);
ImageSpec spec(xres, yres, 3, TypeDesc::HALF);
if (out && out->open(imagefile, spec)) {
out->write_image(TypeDesc::TypeFloat, &pixels[0]);
} else {
errhandler.error("Unable to write output image");
}
delete out;
// Print some debugging info
if (debug || stats) {
double runtime = timer.lap();
std::cout << "\n";
std::cout << "Setup: " << OIIO::Strutil::timeintervalformat (setuptime,2) << "\n";
std::cout << "Run : " << OIIO::Strutil::timeintervalformat (runtime,2) << "\n";
std::cout << "\n";
std::cout << shadingsys->getstats (5) << "\n";
OIIO::TextureSystem *texturesys = shadingsys->texturesys();
if (texturesys)
std::cout << texturesys->getstats (5) << "\n";
std::cout << ustring::getstats() << "\n";
}
// We're done with the shading system now, destroy it
shaders.clear (); // Must release the group refs first
delete shadingsys;
return EXIT_SUCCESS;
}
bool
SMT::save()
{
// Make sure we have some source images before continuing
if( sourceFiles.size() == 0) {
if( !quiet )cout << "ERROR: No source images to convert" << endl;
return true;
}
// Build SMT Header //
//////////////////////
char filename[256];
sprintf(filename, "%s.smt", outPrefix.c_str());
if( verbose ) printf("\nINFO: Creating %s\n", filename );
fstream smt( filename, ios::binary | ios::out );
if( !smt.good() ) {
cout << "ERROR: fstream error." << endl;
return true;
}
SMTHeader header;
header.tileRes = tileRes;
header.tileType = tileType;
if( verbose ) {
cout << " Version: " << header.version << endl;
cout << " nTiles: n/a\n";
printf( " tileRes: (%i,%i)%i.\n", tileRes, tileRes, 4);
cout << " tileType: ";
if( tileType == DXT1 ) cout << "DXT1" << endl;
cout << " tileSize: " << tileSize << " bytes" << endl;
}
smt.write( (char *)&header, sizeof(SMTHeader) );
smt.close();
// setup size for index dimensions
int tcx = width * 16; // tile count x
int tcz = length * 16; // tile count z
unsigned int *indexPixels = new unsigned int[tcx * tcz];
// Load source image
if( verbose )cout << "INFO: Loading Source Image(s)\n";
ImageBuf *bigBuf = buildBig();
ImageSpec bigSpec = bigBuf->spec();
// Process decals
if( !decalFile.empty() ) {
if( verbose )cout << "INFO: Processing decals\n";
pasteDecals( bigBuf );
}
// Swizzle channels
if( verbose )cout << "INFO: Swizzling channels\n";
ImageBuf fixBuf;
int map[] = { 2, 1, 0, 3 };
ImageBufAlgo::channels( fixBuf, *bigBuf, 4, map );
bigBuf->copy( fixBuf );
fixBuf.clear();
// Process Tiles
if( verbose )cout << "INFO: Processing tiles\n";
// Time reporting vars
timeval t1, t2;
double elapsedTime;
deque<double> readings;
double averageTime = 0;
double intervalTime = 0;
// Loop vars
int totalTiles = tcx * tcz;
int currentTile;
// Tile Vars
ROI roi;
ImageSpec tileSpec(tileRes, tileRes, 4, TypeDesc::UINT8 );
// Comparison vars
bool match;
bool yee = false;
unsigned int i;
string hash;
vector<string> hashTable;
TileBufListEntry *listEntry;
deque<TileBufListEntry *> tileList;
// Open smt file for writing tiles
smt.open(filename, ios::binary | ios::out | ios::app );
// loop through tile columns
for ( int z = 0; z < tcz; z++) {
// loop through tile rows
for ( int x = 0; x < tcx; x++) {
currentTile = z * tcx + x + 1;
gettimeofday(&t1, NULL);
// pull a region of the big image to use as a tile.
roi.xbegin = x * tileRes;
roi.xend = x * tileRes + tileRes;
roi.ybegin = z * tileRes;
roi.yend = z * tileRes + tileRes;
roi.zbegin = 0;
roi.zend = 1;
roi.chbegin = 0;
roi.chend = 4;
ImageBuf tempBuf;
ImageBufAlgo::crop( tempBuf, *bigBuf, roi );
ImageBuf *tileBuf = new ImageBuf( filename, tileSpec, tempBuf.localpixels() );
// reset match variables
match = false;
i = nTiles;
if( cnum < 0) {
// no attempt at reducing tile sizes
i = nTiles;
} else if( cnum == 0) {
// only exact matches will be referenced.
hash = ImageBufAlgo::computePixelHashSHA1( *tileBuf );
for( i = 0; i < hashTable.size(); ++i ) {
if( !hashTable[i].compare( hash ) ) {
match = true;
break;
}
}
if( !match ) hashTable.push_back( hash );
} else if( !yee ) {
//Comparison based on numerical differences of pixels
listEntry = new TileBufListEntry;
listEntry->image.copy(*tileBuf);
listEntry->tileNum = nTiles;
ImageBufAlgo::CompareResults result;
deque< TileBufListEntry * >::iterator it;
for(it = tileList.begin(); it != tileList.end(); it++ ) {
TileBufListEntry *listEntry2 = *it;
ImageBufAlgo::compare( *tileBuf, listEntry2->image,
cpet, 1.0f, result);
//TODO give control on tweaking matching
if((int)result.nfail < cnet) {
match = true;
i = listEntry2->tileNum;
delete listEntry;
break;
}
}
if( !match ) {
tileList.push_back(listEntry);
if((int)tileList.size() > cnum) {
delete tileList[0];
tileList.pop_front();
}
}
} else {
//FIXME uncomment when OpenImageIO gets upgraded to v3
/* listEntry = new TileBufListEntry;
listEntry->image.copy(*tileBuf);
listEntry->tileNum = nTiles;
ImageBufAlgo::CompareResults result;
deque< TileBufListEntry * >::iterator it;
for(it = tileList.begin(); it != tileList.end(); it++ ) {
TileBufListEntry *listEntry2 = *it;
ImageBufAlgo::compare_yee( *tileBuf, listEntry2->image,
result, 1.0f, 1.0f );
if(result.nfail == 0) {
match = true;
i = listEntry2->tileNum;
break;
}
}
if( !match ) {
tileList.push_back(listEntry);
if((int)tileList.size() > 32) tileList.pop_front();
}*/
}
// write tile to file.
if( !match ) {
unsigned char *std = (unsigned char *)tileBuf->localpixels();
// process into dds
NVTTOutputHandler *nvttHandler = new NVTTOutputHandler(tileSize);
nvtt::InputOptions inputOptions;
inputOptions.setTextureLayout( nvtt::TextureType_2D, tileRes, tileRes );
inputOptions.setMipmapData( std, tileRes, tileRes );
nvtt::CompressionOptions compressionOptions;
compressionOptions.setFormat(nvtt::Format_DXT1a);
nvtt::OutputOptions outputOptions;
outputOptions.setOutputHeader(false);
outputOptions.setOutputHandler( nvttHandler );
nvtt::Compressor compressor;
if( slow_dxt1 ) compressionOptions.setQuality(nvtt::Quality_Normal);
else compressionOptions.setQuality(nvtt::Quality_Fastest);
compressor.process(inputOptions, compressionOptions, outputOptions);
smt.write( nvttHandler->buffer, tileSize );
delete nvttHandler;
nTiles +=1;
}
delete tileBuf;
// Write index to tilemap
indexPixels[currentTile-1] = i;
gettimeofday(&t2, NULL);
// compute and print the elapsed time in millisec
elapsedTime = (t2.tv_sec - t1.tv_sec) * 1000.0; // sec to ms
elapsedTime += (t2.tv_usec - t1.tv_usec) / 1000.0; // us to ms
readings.push_back(elapsedTime);
if(readings.size() > 1000)readings.pop_front();
intervalTime += elapsedTime;
if( verbose && intervalTime > 1 ) {
for(unsigned int i = 0; i < readings.size(); ++i)
averageTime+= readings[i];
averageTime /= readings.size();
intervalTime = 0;
printf("\033[0G %i of %i %%%0.1f complete | %%%0.1f savings | %0.1fs remaining.",
currentTile, totalTiles,
(float)currentTile / totalTiles * 100,
(float)(1 - (float)nTiles / (float)currentTile) * 100,
averageTime * (totalTiles - currentTile) / 1000);
}
}
}
hashTable.clear();
if( verbose ) cout << endl;
smt.close();
// retroactively fix up the tile count.
smt.open(filename, ios::binary | ios::in | ios::out );
smt.seekp( 20);
smt.write( (char *)&nTiles, 4);
smt.close();
// Save tileindex
ImageOutput *imageOutput;
sprintf( filename, "%s_tilemap.exr", outPrefix.c_str() );
imageOutput = ImageOutput::create(filename);
if( !imageOutput ) {
delete [] indexPixels;
return true;
}
ImageSpec tilemapSpec( tcx, tcz, 1, TypeDesc::UINT);
imageOutput->open( filename, tilemapSpec );
imageOutput->write_image( TypeDesc::UINT, indexPixels );
imageOutput->close();
delete imageOutput;
delete [] indexPixels;
return false;
}
// Function to write an image using OpenImageIO that reads and stores the pixel bein g displayed on screen using OpenGL
void writeImage() {
// Store the Output File Type in outfiletype, example .ppm or .jpg
string outfiletype = outfilename.substr(outfilename.find("."));
// Create ImageOutput instance using the outfilename & exit if error in creating
ImageOutput *out = ImageOutput::create(outfilename);
if (!out) {
cerr << "Could not create an ImageOutput for "
<< outfilename << "\nError: "
<< geterror()<<endl;
exit(-1);
}
// Set outputchannels to 3 if outputfiletype is either ppm/pnm/pgm/pbm/hdr/rgbe else let it be equal to the number of channels of the input image (either 3 or 4)
int outputchannels = (outfiletype==".ppm" || outfiletype==".pnm" || outfiletype==".pgm" || outfiletype==".pbm" || outfiletype==".hdr" || outfiletype==".rgbe" ? 3 : channels1 );
// Allocate memory based on the number of channels
unsigned char *oiio_pixels = new unsigned char[xresWarped*yresWarped*outputchannels];
// Check if memory has been allocated successfully
if (oiio_pixels==0) {
// Memory not allocated successfully! Display message and Exit
cout<<"Couldn't allocate memory. Exiting!"<<endl;
exit(-1);
delete out;
}
// If number of channels is 4 then read in RGBA format using GL_RGBA
if(outputchannels==4) {
for(int i=0, k=0; i<yresWarped && k<(xresWarped*yresWarped*outputchannels); i++) {
for(int j=0; j<xresWarped; j++, k+=4) {
oiio_pixels[k] = pixmapWarped[i][j].red;
oiio_pixels[k+1] = pixmapWarped[i][j].green;
oiio_pixels[k+2] = pixmapWarped[i][j].blue;
oiio_pixels[k+3] = pixmapWarped[i][j].alpha;
}
}
}
// If number of channels is 3 then read in RGB format using GL_RGB
else if(outputchannels==3) {
for(int i=0, k=0; i<yresWarped && k<(xresWarped*yresWarped*outputchannels); i++) {
for(int j=0; j<xresWarped; j++, k+=3) {
oiio_pixels[k] = pixmapWarped[i][j].red;
oiio_pixels[k+1] = pixmapWarped[i][j].green;
oiio_pixels[k+2] = pixmapWarped[i][j].blue;
}
}
}
// Create ImageSpec for the output image with name outfile
ImageSpec spec(xresWarped,yresWarped,outputchannels,TypeDesc::UINT8);
if (! out->open (outfilename, spec)) {
cerr << "Could not open "
<< outfilename << "\nError: "
<< out->geterror()<< endl;
delete out;
delete [] oiio_pixels;
exit(-1);
}
// This particular call to write flips the image for us
int scanlinesize = xresWarped * outputchannels * sizeof(oiio_pixels[0]);
if(! out->write_image (TypeDesc::UINT8, (unsigned char*)oiio_pixels+(yresWarped-1)*scanlinesize, AutoStride, -scanlinesize, AutoStride)) {
cerr << "Could not write pixels to "
<< outfilename << "\nError: "
<< out->geterror()<< endl;
delete out;
delete [] oiio_pixels;
exit(-1);
}
// Close the output file
if(! out->close ()) {
std::cerr << "Error closing "
<< outfilename << "\nError: "
<< out->geterror() << endl;
delete out;
delete [] oiio_pixels;
exit(-1);
}
delete out;
delete [] oiio_pixels;
}
static bool
convert_file (const std::string &in_filename, const std::string &out_filename)
{
if (noclobber && Filesystem::exists(out_filename)) {
std::cerr << "iconvert ERROR: Output file already exists \""
<< out_filename << "\"\n";
return false;
}
if (verbose)
std::cout << "Converting " << in_filename << " to " << out_filename << "\n";
std::string tempname = out_filename;
if (tempname == in_filename) {
tempname = out_filename + ".tmp"
+ Filesystem::extension (out_filename);
}
// Find an ImageIO plugin that can open the input file, and open it.
ImageInput *in = ImageInput::open (in_filename.c_str());
if (! in) {
std::string err = geterror();
std::cerr << "iconvert ERROR: "
<< (err.length() ? err : Strutil::format("Could not open \"%s\"", in_filename))
<< "\n";
delete in;
return false;
}
ImageSpec inspec = in->spec();
std::string metadatatime = inspec.get_string_attribute ("DateTime");
// Find an ImageIO plugin that can open the output file, and open it
ImageOutput *out = ImageOutput::create (tempname.c_str());
if (! out) {
std::cerr
<< "iconvert ERROR: Could not find an ImageIO plugin to write \""
<< out_filename << "\" :" << geterror() << "\n";
delete in;
return false;
}
// In order to deal with formats that support subimages, but not
// subimage appending, we gather them all first.
std::vector<ImageSpec> subimagespecs;
if (out->supports("multiimage") && !out->supports("appendsubimage")) {
ImageCache *imagecache = ImageCache::create ();
int nsubimages = 0;
ustring ufilename (in_filename);
imagecache->get_image_info (ufilename, 0, 0, ustring("subimages"),
TypeDesc::TypeInt, &nsubimages);
if (nsubimages > 1) {
subimagespecs.resize (nsubimages);
for (int i = 0; i < nsubimages; ++i) {
ImageSpec inspec = *imagecache->imagespec (ufilename, i, 0,
true /*native*/);
subimagespecs[i] = inspec;
adjust_spec (in, out, inspec, subimagespecs[i]);
}
}
ImageCache::destroy (imagecache);
}
bool ok = true;
bool mip_to_subimage_warning = false;
for (int subimage = 0;
ok && in->seek_subimage(subimage,0,inspec);
++subimage) {
if (subimage > 0 && !out->supports ("multiimage")) {
std::cerr << "iconvert WARNING: " << out->format_name()
<< " does not support multiple subimages.\n";
std::cerr << "\tOnly the first subimage has been copied.\n";
break; // we're done
}
int miplevel = 0;
do {
// Copy the spec, with possible change in format
ImageSpec outspec = inspec;
bool nocopy = adjust_spec (in, out, inspec, outspec);
if (miplevel > 0) {
// Moving to next MIP level
ImageOutput::OpenMode mode;
if (out->supports ("mipmap"))
mode = ImageOutput::AppendMIPLevel;
else if (out->supports ("multiimage") &&
out->supports ("appendsubimage")) {
mode = ImageOutput::AppendSubimage; // use if we must
if (! mip_to_subimage_warning
&& strcmp(out->format_name(),"tiff")) {
std::cerr << "iconvert WARNING: " << out->format_name()
<< " does not support MIPmaps.\n";
std::cerr << "\tStoring the MIPmap levels in subimages.\n";
}
mip_to_subimage_warning = true;
} else {
std::cerr << "iconvert WARNING: " << out->format_name()
<< " does not support MIPmaps.\n";
std::cerr << "\tOnly the first level has been copied.\n";
break; // on to the next subimage
}
ok = out->open (tempname.c_str(), outspec, mode);
} else if (subimage > 0) {
// Moving to next subimage
ok = out->open (tempname.c_str(), outspec,
ImageOutput::AppendSubimage);
} else {
// First time opening
if (subimagespecs.size())
ok = out->open (tempname.c_str(), int(subimagespecs.size()),
&subimagespecs[0]);
else
ok = out->open (tempname.c_str(), outspec, ImageOutput::Create);
}
if (! ok) {
std::string err = out->geterror();
std::cerr << "iconvert ERROR: "
<< (err.length() ? err : Strutil::format("Could not open \"%s\"", out_filename))
<< "\n";
ok = false;
break;
}
if (! nocopy) {
ok = out->copy_image (in);
if (! ok)
std::cerr << "iconvert ERROR copying \"" << in_filename
<< "\" to \"" << out_filename << "\" :\n\t"
<< out->geterror() << "\n";
} else {
// Need to do it by hand for some reason. Future expansion in which
// only a subset of channels are copied, or some such.
std::vector<char> pixels ((size_t)outspec.image_bytes(true));
ok = in->read_image (outspec.format, &pixels[0]);
if (! ok) {
std::cerr << "iconvert ERROR reading \"" << in_filename
<< "\" : " << in->geterror() << "\n";
} else {
ok = out->write_image (outspec.format, &pixels[0]);
if (! ok)
std::cerr << "iconvert ERROR writing \"" << out_filename
<< "\" : " << out->geterror() << "\n";
}
}
++miplevel;
} while (ok && in->seek_subimage(subimage,miplevel,inspec));
}
out->close ();
delete out;
in->close ();
delete in;
// Figure out a time for the input file -- either one supplied by
// the metadata, or the actual time stamp of the input file.
std::time_t in_time;
if (metadatatime.empty() ||
! DateTime_to_time_t (metadatatime.c_str(), in_time))
in_time = Filesystem::last_write_time (in_filename);
if (out_filename != tempname) {
if (ok) {
Filesystem::remove (out_filename);
Filesystem::rename (tempname, out_filename);
}
else
Filesystem::remove (tempname);
}
// If user requested, try to adjust the file's modification time to
// the creation time indicated by the file's DateTime metadata.
if (ok && adjust_time)
Filesystem::last_write_time (out_filename, in_time);
return ok;
}
OIIO_NAMESPACE_USING
#include <algorithm>
#include "Perlin.h"
int main(int argc, char* argv[])
{
try
{
options_description desc("Allowed options");
desc.add_options()
("help,h", "produce help message")
("xres,x", value<int>()->default_value(255),
"x resolution")
("yres,y", value<int>()->default_value(255),
"y resolution")
("sample-size,s", value<int>()->default_value(256),
"sample size")
("seed,r", value<int>()->default_value(0),
"psuedo-random seed")
("persistence,p", value<float>()->default_value(0.5f),
"persistence value")
("octaves,o", value<int>()->default_value(2),
"number of octaves")
;
options_description hidden("Hidden options");
hidden.add_options()
("output-file", value<string>()->required(), "output file")
;
options_description all("Allowed options");
all.add(desc).add(hidden);
positional_options_description p;
p.add("output-file", 1);
variables_map vm;
store(command_line_parser(argc, argv).options(all)
.positional(p).run(), vm);
if (vm.count("help"))
{
cout << "Usage: " << argv[0] << " [options] output-file" << endl;
cout << desc << endl;
return 0;
}
notify(vm);
string outputfile = vm["output-file"].as<string>();
ImageOutput* out = ImageOutput::create(outputfile);
if (!out)
{
cerr << "Could not create an ImageOutput for "
<< outputfile << ", error = "
<< OpenImageIO::geterror() << endl;
return 0;
}
const int xres = vm["xres"].as<int>();
const int yres = vm["yres"].as<int>();
const int channels = 3; // RGB
ImageSpec outspec(xres, yres, channels, TypeDesc::UINT8);
if (!out->open(outputfile, outspec))
{
cerr << "Could not open " << outputfile
<< ", error = " << out->geterror() << endl;
ImageOutput::destroy(out);
return 0;
}
const int sample_size = vm["sample-size"].as<int>();
const int seed = vm["seed"].as<int>();
Perlin perlin(sample_size, seed);
float persistence = vm["persistence"].as<float>();
int octaves = vm["octaves"].as<int>();
unsigned char pixels[xres * yres * channels];
for (int y = 0; y < yres; y++)
{
for (int x = 0; x < xres; x++)
{
float frequency, amplitude;
float total = 0.0f;
for (int i = 1; i <= octaves; ++i)
{
frequency = pow(2.0f, i);
amplitude = pow(persistence, i);
total += (perlin.Noise2(frequency * x / sample_size,
frequency * y / sample_size) + 1)/ 2.0f * amplitude;
}
total = min<float>(1.0f, max<float>(0.0f, total));
unsigned int noise = (unsigned int) (total * 255);
pixels[y * xres * channels + x * channels] = noise;
pixels[y * xres * channels + x * channels + 1] = noise;
pixels[y * xres * channels + x * channels + 2] = noise;
}
}
if (!out->write_image(TypeDesc::UINT8, pixels))
{
cerr << "Could not write pixels to " << outputfile
<< ", error = " << out->geterror() << endl;
ImageOutput::destroy(out);
return 0;
}
ImageOutput::destroy(out);
}
catch (exception& e)
{
cerr << e.what() << endl;
}
}
