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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "DNA_pointcloud_types.h"
#include "BKE_geometry_set.hh"
#include "BKE_lib_id.h"
#include "BKE_pointcloud.h"
#include "attribute_access_intern.hh"
/* -------------------------------------------------------------------- */
/** \name Geometry Component Implementation
* \{ */
PointCloudComponent::PointCloudComponent() : GeometryComponent(GEO_COMPONENT_TYPE_POINT_CLOUD)
{
}
PointCloudComponent::~PointCloudComponent()
{
this->clear();
}
GeometryComponent *PointCloudComponent::copy() const
{
PointCloudComponent *new_component = new PointCloudComponent();
if (pointcloud_ != nullptr) {
new_component->pointcloud_ = BKE_pointcloud_copy_for_eval(pointcloud_, false);
new_component->ownership_ = GeometryOwnershipType::Owned;
}
return new_component;
}
void PointCloudComponent::clear()
{
BLI_assert(this->is_mutable());
if (pointcloud_ != nullptr) {
if (ownership_ == GeometryOwnershipType::Owned) {
BKE_id_free(nullptr, pointcloud_);
}
pointcloud_ = nullptr;
}
}
bool PointCloudComponent::has_pointcloud() const
{
return pointcloud_ != nullptr;
}
void PointCloudComponent::replace(PointCloud *pointcloud, GeometryOwnershipType ownership)
{
BLI_assert(this->is_mutable());
this->clear();
pointcloud_ = pointcloud;
ownership_ = ownership;
}
PointCloud *PointCloudComponent::release()
{
BLI_assert(this->is_mutable());
PointCloud *pointcloud = pointcloud_;
pointcloud_ = nullptr;
return pointcloud;
}
const PointCloud *PointCloudComponent::get_for_read() const
{
return pointcloud_;
}
PointCloud *PointCloudComponent::get_for_write()
{
BLI_assert(this->is_mutable());
if (ownership_ == GeometryOwnershipType::ReadOnly) {
pointcloud_ = BKE_pointcloud_copy_for_eval(pointcloud_, false);
ownership_ = GeometryOwnershipType::Owned;
}
return pointcloud_;
}
bool PointCloudComponent::is_empty() const
{
return pointcloud_ == nullptr;
}
bool PointCloudComponent::owns_direct_data() const
{
return ownership_ == GeometryOwnershipType::Owned;
}
void PointCloudComponent::ensure_owns_direct_data()
{
BLI_assert(this->is_mutable());
if (ownership_ != GeometryOwnershipType::Owned) {
pointcloud_ = BKE_pointcloud_copy_for_eval(pointcloud_, false);
ownership_ = GeometryOwnershipType::Owned;
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Attribute Access
* \{ */
namespace blender::bke {
/**
* In this function all the attribute providers for a point cloud component are created. Most data
* in this function is statically allocated, because it does not change over time.
*/
static ComponentAttributeProviders create_attribute_providers_for_point_cloud()
{
static auto update_custom_data_pointers = [](void * /*owner*/) {};
static CustomDataAccessInfo point_access = {
[](void *owner) -> CustomData * {
PointCloud *pointcloud = static_cast<PointCloud *>(owner);
return &pointcloud->pdata;
},
[](const void *owner) -> const CustomData * {
const PointCloud *pointcloud = static_cast<const PointCloud *>(owner);
return &pointcloud->pdata;
},
[](const void *owner) -> int {
const PointCloud *pointcloud = static_cast<const PointCloud *>(owner);
return pointcloud->totpoint;
},
update_custom_data_pointers};
static BuiltinCustomDataLayerProvider position("position",
ATTR_DOMAIN_POINT,
CD_PROP_FLOAT3,
CD_PROP_FLOAT3,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::NonDeletable,
point_access,
make_array_read_attribute<float3>,
make_array_write_attribute<float3>,
nullptr);
static BuiltinCustomDataLayerProvider radius("radius",
ATTR_DOMAIN_POINT,
CD_PROP_FLOAT,
CD_PROP_FLOAT,
BuiltinAttributeProvider::Creatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::Deletable,
point_access,
make_array_read_attribute<float>,
make_array_write_attribute<float>,
nullptr);
static BuiltinCustomDataLayerProvider id("id",
ATTR_DOMAIN_POINT,
CD_PROP_INT32,
CD_PROP_INT32,
BuiltinAttributeProvider::Creatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::Deletable,
point_access,
make_array_read_attribute<int>,
make_array_write_attribute<int>,
nullptr);
static CustomDataAttributeProvider point_custom_data(ATTR_DOMAIN_POINT, point_access);
return ComponentAttributeProviders({&position, &radius, &id}, {&point_custom_data});
}
static AttributeAccessorFunctions get_pointcloud_accessor_functions()
{
static const ComponentAttributeProviders providers =
create_attribute_providers_for_point_cloud();
AttributeAccessorFunctions fn =
attribute_accessor_functions::accessor_functions_for_providers<providers>();
fn.domain_size = [](const void *owner, const eAttrDomain domain) {
if (owner == nullptr) {
return 0;
}
const PointCloud &pointcloud = *static_cast<const PointCloud *>(owner);
switch (domain) {
case ATTR_DOMAIN_POINT:
return pointcloud.totpoint;
default:
return 0;
}
};
fn.domain_supported = [](const void *UNUSED(owner), const eAttrDomain domain) {
return domain == ATTR_DOMAIN_POINT;
};
fn.adapt_domain = [](const void *UNUSED(owner),
const blender::GVArray &varray,
const eAttrDomain from_domain,
const eAttrDomain to_domain) {
if (from_domain == to_domain && from_domain == ATTR_DOMAIN_POINT) {
return varray;
}
return blender::GVArray{};
};
return fn;
}
static const AttributeAccessorFunctions &get_pointcloud_accessor_functions_ref()
{
static const AttributeAccessorFunctions fn = get_pointcloud_accessor_functions();
return fn;
}
AttributeAccessor pointcloud_attributes(const PointCloud &pointcloud)
{
return AttributeAccessor(&pointcloud, get_pointcloud_accessor_functions_ref());
}
MutableAttributeAccessor pointcloud_attributes_for_write(PointCloud &pointcloud)
{
return MutableAttributeAccessor(&pointcloud, get_pointcloud_accessor_functions_ref());
}
} // namespace blender::bke
std::optional<blender::bke::AttributeAccessor> PointCloudComponent::attributes() const
{
return blender::bke::AttributeAccessor(pointcloud_,
blender::bke::get_pointcloud_accessor_functions_ref());
}
std::optional<blender::bke::MutableAttributeAccessor> PointCloudComponent::attributes_for_write()
{
PointCloud *pointcloud = this->get_for_write();
return blender::bke::MutableAttributeAccessor(
pointcloud, blender::bke::get_pointcloud_accessor_functions_ref());
}
/** \} */
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