void XMLReader::LoadSceneFromFile(QFile &file, const QStringRef &local_path, Scene &scene, Integrator &integrator)
{
if(file.open(QIODevice::ReadOnly))
{
QXmlStreamReader xml_reader;
xml_reader.setDevice(&file);
QMap<QString, QList<Geometry*>> material_to_geometry_map;
while(!xml_reader.isEndDocument())
{
xml_reader.readNext();
if(xml_reader.isStartElement())
{
//Get the tag name
QString tag(xml_reader.name().toString());
if(QString::compare(tag, QString("camera")) == 0)
{
scene.SetCamera(LoadCamera(xml_reader));
}
else if(QString::compare(tag, QString("geometry")) == 0)
{
Geometry* geometry = LoadGeometry(xml_reader, material_to_geometry_map, local_path);
if(geometry == NULL)
{
return;
}
scene.objects.append(geometry);
}
else if(QString::compare(tag, QString("material")) == 0)
{
Material* material = LoadMaterial(xml_reader, local_path);
if(material == NULL)
{
return;
}
scene.materials.append(material);
}
else if(QString::compare(tag, QString("integrator")) == 0)
{
integrator = LoadIntegrator(xml_reader);
}
else if(QString::compare(tag, QString("pixelSampler"), Qt::CaseInsensitive) == 0)
{
PixelSampler* sampler = LoadPixelSampler(xml_reader);
if(sampler == NULL)
{
std::cout << "Did not properly load a pixel sampler!" << std::endl;
return;
}
if(scene.pixel_sampler != NULL)
{
delete scene.pixel_sampler;
}
scene.pixel_sampler = sampler;
}
}
}
//Associate the materials in the XML file with the geometries that use those materials.
for(int i = 0; i < scene.materials.size(); i++)
{
QList<Geometry*> l = material_to_geometry_map.value(scene.materials[i]->name);
for(int j = 0; j < l.size(); j++)
{
l[j]->SetMaterial(scene.materials[i]);
}
}
//Copy emissive geometry from the list of objects to the list of lights
QList<Geometry*> to_lights;
for(Geometry *g : scene.objects)
{
g->create();
if(g->material->emissive)
{
to_lights.append(g);
}
}
for(Geometry *g : to_lights)
{
scene.lights.append(g);
}
file.close();
}
}
void XMLReader::LoadSceneFromFile(QFile &file, const QStringRef &local_path, Scene &scene, Integrator* &integrator)
{
if(file.open(QIODevice::ReadOnly))
{
QXmlStreamReader xml_reader;
xml_reader.setDevice(&file);
QMap<QString, QList<Geometry*>> material_to_geometry_map;
QMap<QString, QList<Material*>> bxdf_to_material_map;//Key is the bxdf's name
while(!xml_reader.isEndDocument())
{
xml_reader.readNext();
if(xml_reader.isStartElement())
{
//Get the tag name
QString tag(xml_reader.name().toString());
if(QString::compare(tag, QString("camera")) == 0)
{
scene.SetCamera(LoadCamera(xml_reader));
}
else if(QString::compare(tag, QString("geometry")) == 0)
{
Geometry* geometry = LoadGeometry(xml_reader, material_to_geometry_map, local_path);
if(geometry == NULL)
{
return;
}
scene.objects.append(geometry);
}
else if(QString::compare(tag, QString("material")) == 0)
{
Material* material = LoadMaterial(xml_reader, local_path, bxdf_to_material_map);
if(material == NULL)
{
return;
}
scene.materials.append(material);
}
else if(QString::compare(tag, QString("bxdf")) == 0)
{
BxDF* bxdf = LoadBxDF(xml_reader);
if(bxdf == NULL)
{
return;
}
scene.bxdfs.append(bxdf);
}
else if(QString::compare(tag, QString("integrator")) == 0)
{
integrator = LoadIntegrator(xml_reader);
}
else if(QString::compare(tag, QString("pixelSampleLength"), Qt::CaseInsensitive) == 0)
{
scene.sqrt_samples = LoadPixelSamples(xml_reader);
}
}
}
//Associate the materials in the XML file with the geometries that use those materials.
for(int i = 0; i < scene.materials.size(); i++)
{
QList<Geometry*> l = material_to_geometry_map.value(scene.materials[i]->name);
for(int j = 0; j < l.size(); j++)
{
l[j]->SetMaterial(scene.materials[i]);
}
}
for(int i = 0; i < scene.bxdfs.size(); i++)
{
QList<Material*> l = bxdf_to_material_map.value(scene.bxdfs[i]->name);
for(int j = 0; j < l.size(); j++)
{
l[j]->bxdfs.append(scene.bxdfs[i]);
}
}
//Copy emissive geometry from the list of objects to the list of lights
QList<Geometry*> to_lights;
for(Geometry *g : scene.objects)
{
g->create();
if(g->material->is_light_source)
{
to_lights.append(g);
}
g->ComputeArea();
}
for(Geometry *g : to_lights)
{
scene.lights.append(g);
}
file.close();
}
}
