double Scene::compute_radius() const
{
double square_radius = 0.0;
const GAABB3 bbox = compute_bbox();
if (bbox.is_valid())
{
for (size_t i = 0; i < 8; ++i)
{
const double square_distance =
static_cast<double>(square_norm(bbox.compute_corner(i)));
square_radius = max(square_radius, square_distance);
}
}
return sqrt(square_radius);
}
SPPMPassCallback::SPPMPassCallback(
const Scene& scene,
const LightSampler& light_sampler,
const TraceContext& trace_context,
TextureStore& texture_store,
#ifdef APPLESEED_WITH_OIIO
OIIO::TextureSystem& oiio_texture_system,
#endif
#ifdef APPLESEED_WITH_OSL
OSL::ShadingSystem& shading_system,
#endif
const SPPMParameters& params)
: m_params(params)
, m_photon_tracer(
scene,
light_sampler,
trace_context,
texture_store,
#ifdef APPLESEED_WITH_OIIO
oiio_texture_system,
#endif
#ifdef APPLESEED_WITH_OSL
shading_system,
#endif
params)
, m_pass_number(0)
{
// Compute the initial lookup radius.
const GAABB3 scene_bbox = scene.compute_bbox();
const float scene_diameter =
scene_bbox.is_valid()
? static_cast<float>(scene_bbox.diameter())
: 0.0f;
const float diameter_factor = m_params.m_initial_radius_percents / 100.0f;
m_initial_lookup_radius = scene_diameter * diameter_factor;
// Start with the initial lookup radius.
m_lookup_radius = m_initial_lookup_radius;
}
void CameraController::configure_controller(const Scene* scene)
{
Camera* camera = m_scene->get_camera();
// Set the controller orientation and position based on the scene camera.
m_controller.set_transform(
camera->transform_sequence().get_earliest_transform().get_local_to_parent());
if (camera->get_parameters().strings().exist("controller_target"))
{
// The camera already has a target position, use it.
m_controller.set_target(
camera->get_parameters().get_optional<Vector3d>(
"controller_target",
Vector3d(0.0)));
}
else
{
// Otherwise, if the scene is not empty, use its center as the target position.
const GAABB3 scene_bbox = scene->compute_bbox();
if (scene_bbox.is_valid())
m_controller.set_target(Vector3d(scene_bbox.center()));
}
}
GAABB3 Scene::compute_bbox() const
{
const AssemblyInstanceContainer& instances = assembly_instances();
const GAABB3 bbox = compute_parent_bbox<GAABB3>(instances.begin(), instances.end());
return bbox.is_valid() ? bbox : GAABB3(GVector3(0.0f), GVector3(0.0f));
}