ludus::foundation::geometry::ProjectionScratch¶

Class

Caller-owned, reusable search storage, so a projection never allocates.

Reserve it once with TryReserve; queries only use reserved capacity. Its contents are unspecified after any query, successful or not. Move-only.

#include <ludus/foundation/geometry/query.hpp>

class ludus::foundation::geometry::ProjectionScratch final

Members¶

friend struct internal::ProjectionAccess

Lets the projection search use the reserved storage; an implementation detail, not a public API.

ludus::foundation::geometry::ProjectionScratch::ProjectionScratch() noexcept=default

Construct scratch with no reserved capacity.

ludus::foundation::geometry::ProjectionScratch::ProjectionScratch(ProjectionScratch &&other) noexcept=default

Transfer the reserved storage; the source becomes empty.

ProjectionScratch & ludus::foundation::geometry::ProjectionScratch::operator=(ProjectionScratch &&other) noexcept=default

Release this storage and take the other's; the source becomes empty.

ludus::foundation::geometry::ProjectionScratch::ProjectionScratch(const ProjectionScratch &)=delete

Copying is disabled: one owner holds the storage.

ProjectionScratch & ludus::foundation::geometry::ProjectionScratch::operator=(const ProjectionScratch &)=delete

Copy assignment is disabled: one owner holds the storage.

ludus::foundation::geometry::ProjectionScratch::~ProjectionScratch()=default

Release the storage.

GeometryStatus ludus::foundation::geometry::ProjectionScratch::TryReserve(usize capacity) noexcept

Reserve room for capacity intervals and capacity candidates.

Parameter	Description
`capacity`	Entries of each kind; see ComputeProjectionScratchCapacity.

Returns

Success, or OutOfMemory with the previous reservation kept.

usize ludus::foundation::geometry::ProjectionScratch::GetCapacity() const noexcept

Entries of each kind that a query may use without allocating.

Related types: usize