bool buildChains(std::vector<ossimFilename>& fileList,
ossimConnectableObject::ConnectableObjectList& chains)
{
bool result = true;
chains.clear();
for(ossim_int32 index = 0; index < (ossim_int32)fileList.size();++index)
{
ossimRefPtr<ossimImageSource> handler = ossimImageHandlerRegistry::instance()->open(fileList[index]);
if(handler.valid())
{
ossimImageChain* imageChain = new ossimImageChain;
imageChain->add(handler.get());
chains.push_back(imageChain);
}
else
{
cerr << "Error: Unable to load image " << fileList[index] << endl;
result = false;
}
}
return result;
}
bool buildRenderers(const ossimKeywordlist& specFile,
ossimConnectableObject::ConnectableObjectList& imageSources,
ossimMapProjection* productProjection)
{
ossim_int32 index = 0;
// add the renderer to each chain. First, look for
// the ossimImageHandler and get the image
// geometry for this chain. The add the ossimImageRenderer
// to each chain and then connect it up
//
for(index = 0; index < (ossim_int32)imageSources.size(); ++index)
{
ossimImageChain* imageChain = PTR_CAST(ossimImageChain, imageSources[index].get());
if(imageChain)
{
ossimConnectableObject* source = imageChain->findFirstObjectOfType(STATIC_TYPE_INFO(ossimImageHandler));
if(source)
{
ossimImageHandler* imageHandler = PTR_CAST(ossimImageHandler,
source);
ossimRefPtr<ossimImageGeometry> geom = imageHandler->getImageGeometry();
// now add the image/view transform to the
// renderer.
//
if(geom.valid())
{
ossimImageSource* last = imageChain->getFirstSource();
ossimImageRenderer* renderer = new ossimImageRenderer;
renderer->connectMyInputTo(0, PTR_CAST(ossimConnectableObject, last));
imageChain->add(renderer);
ossimImageViewProjectionTransform* transform = new ossimImageViewProjectionTransform;
transform->setImageGeometry(geom.get());
ossimRefPtr<ossimImageGeometry> viewGeom = new ossimImageGeometry();
viewGeom->setProjection(productProjection);
// Make a copy of the view projection for
// each chain by passing in the object and not
// the pointer.
transform->setViewGeometry(viewGeom.get());
renderer->setImageViewTransform(transform);
imageChain->initialize();
}
else
{
return false;
}
}
}
}
return true;
}
ossimImageCombiner::ossimImageCombiner(ossimConnectableObject::ConnectableObjectList& inputSources)
:ossimImageSource(NULL,
(ossim_uint32)inputSources.size(),
0,
false,
false),
theLargestNumberOfInputBands(0),
theInputToPassThrough(0),
theHasDifferentInputs(false),
theNormTile(NULL),
theCurrentIndex(0)
{
theComputeFullResBoundsFlag = true;
for(ossim_uint32 index = 0; index < inputSources.size(); ++index)
{
connectMyInputTo(index, inputSources[index].get());
}
addListener((ossimConnectableObjectListener*)this);
initialize();
}
