class Enlighten::PointProjection

└>Geo::IRtMesh
└>Geo::IGeoReleasable

Utility class for projecting points into a triangle surface, and optionally 'pushing up'.

Functions

Name	Description
Create(Geo::GeoArray< PointProjectionVertex > &, Geo::GeoArray< Geo::s32 > &, Geo::GeoArray< bool > &, bool)	Create the projection object with a set of geometry to project onto.
GetNumRtTriangles()	Returns how many triangles in the mesh.
GetNumRtVertices()	Returns how many vertices in the mesh.
ProjectPoint(PointProjectionScratchMem &, const Geo::v128, const Geo::v128, float, float)	Project a point.
ProjectPointAndCalculateNormal(PointProjectionScratchMem &, const Geo::v128, const Geo::v128, Geo::v128 &, Geo::v128 &, float, float)	Project a point and retrieve the normal of this point on the projected onto surface Note that this requires that the ProjectionPoint structures have proper normals set.
Release()	Destroy this object.
Release()	Free this object that was created within the Enlighten libraries.
VisitRtMesh(EmbreeRtMeshVisitor &)	Calls methods on the given RtMeshVisitor for each vertex and triangle in the mesh.

static PointProjection* Enlighten::PointProjection::Create

public: PointProjection * Create
(
Geo::GeoArray< PointProjectionVertex > & verts,
Geo::GeoArray< Geo::s32 > & triIndices,
Geo::GeoArray< bool > & triIsBlocking,
bool includePushOff
)

Create the projection object with a set of geometry to project onto.

Note

In order to save on unnecessary memory copies the contents of the input arrays are grabbed by this class, so after this call these arrays will be empty. Take a copy in advance if you need to use the data in the arrays beyond this call. Also, this class uses the Embree ray tracing engine if you specify includePushOff==true. Embree must be initialised during the lifetime of this class. For instance, using the Geo::InitRayTracing class. This is not required if includePushOff==false.

Parameters

[in]	verts	The vertices of the geometry to project onto. All must have valid positions. Normals only need to be valid if includePushOff is true.
[in]	triIndices	The triangle indices of the geometry to project onto. Must be a multiple of 3 and all indices must be in range of verts.
[in]	triIsBlocking	Array of bools a 1/3rd of the length of triIndices that determines whether a triangle can be pushed through or is blocking.
[in]	includePushOff	Whether to build acceleration structures to allow a non-zero maxRayIntersectionDistance in ProjectPoint().

virtual Geo::s32 Geo::IRtMesh::GetNumRtTriangles

public: Geo::s32 GetNumRtTriangles() const

Returns how many triangles in the mesh.

virtual Geo::s32 Geo::IRtMesh::GetNumRtVertices

public: Geo::s32 GetNumRtVertices() const

Returns how many vertices in the mesh.

Geo::v128 Enlighten::PointProjection::ProjectPoint

public: Geo::v128 ProjectPoint
(
PointProjectionScratchMem & scratchMem,
const Geo::v128 position,
const Geo::v128 normal,
float maxRayIntersectionDistance,
float triThickness
) const

Project a point.

void Enlighten::PointProjection::ProjectPointAndCalculateNormal

public: void ProjectPointAndCalculateNormal
(
PointProjectionScratchMem & scratchMem,
const Geo::v128 position,
const Geo::v128 normal,
Geo::v128 & outputPosition,
Geo::v128 & outputNormal,
float maxRayIntersectionDistance,
float triThickness
) const

Project a point and retrieve the normal of this point on the projected onto surface Note that this requires that the ProjectionPoint structures have proper normals set.

virtual void Enlighten::PointProjection::Release

public: virtual void Release()

Destroy this object.

virtual void Geo::IGeoReleasable::Release

public: void Release()

Free this object that was created within the Enlighten libraries.

Expect this to behave in a similar way to calling 'delete(this)'

virtual void Geo::IRtMesh::VisitRtMesh

public: void VisitRtMesh
(
EmbreeRtMeshVisitor & visitor
) const

Calls methods on the given RtMeshVisitor for each vertex and triangle in the mesh.

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