#include <opennurbs_subd_data.h>
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| static const ON_2dex | CenterVertexDex (int vi) |
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| static void | Clear (ON_SubDQuadNeighborhood *subd_quad_nbd, bool bRetainFixedSizeHeap) |
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| static ON_2dex | DeltaDex (unsigned int corner_index, int delta_i, int delta_j) |
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| static bool | GetLimitPoint (const ON_SubDVertex *vertex, double limitP[3], double limitN[3]) |
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| static bool | GetSubdivisionPoint (const ON_SubDEdge *edge, double P1[3]) |
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| static bool | GetSubdivisionPoint (const ON_SubDFace *face, double P1[3]) |
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| static bool | GetSubdivisionPoint (const ON_SubDVertex *vertex, double P1[3]) |
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| static ON_2dex | GridDex (unsigned int grid_size, unsigned int corner_index, unsigned int i, unsigned int j) |
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◆ ON_SubDQuadNeighborhood()
| ON_SubDQuadNeighborhood::ON_SubDQuadNeighborhood |
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default |
◆ ~ON_SubDQuadNeighborhood()
| ON_SubDQuadNeighborhood::~ON_SubDQuadNeighborhood |
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◆ CenterQuad()
| const ON_SubDFace* ON_SubDQuadNeighborhood::CenterQuad |
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const |
Returns: The center quad face m_face[1][1].
◆ CenterVertex()
| const ON_SubDVertex* ON_SubDQuadNeighborhood::CenterVertex |
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int |
vi | ) |
const |
◆ CenterVertexDex()
| static const ON_2dex ON_SubDQuadNeighborhood::CenterVertexDex |
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int |
vi | ) |
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◆ Clear()
Description: Clear current settings so the ON_SubDQuadNeighborhood can be reused. Parameters: subd_quad_nbd - [in/out] ON_SubDQuadNeighborhood to clear. bRetainFixedSizeHeap - [in] The m_fsh heap is always reset. When bRetainFixedSizeHeap is true, m_fsh is not set to nullptr.
◆ CornerFace()
| const ON_SubDFace* ON_SubDQuadNeighborhood::CornerFace |
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unsigned int |
fvi | ) |
const |
Parameters: fei - [in] center quad face vertex index (0 to 3) Returns: A pointer to the neighbor face opposite m_face[1][1]->Vertex(fvi). This face will be null if the vertex valence is not 4 or any of its edges are creases. m_face[0][0] = the neighbor diagonal from m_face[1][1]->Vertex(0) m_face[0][2] = the neighbor diagonal from m_face[1][1]->Vertex(1) m_face[2][2] = the neighbor diagonal from m_face[1][1]->Vertex(2) m_face[2][0] = the neighbor diagonal from m_face[1][1]->Vertex(3)
◆ DeltaDex()
| static ON_2dex ON_SubDQuadNeighborhood::DeltaDex |
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unsigned int |
corner_index, |
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int |
delta_i, |
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int |
delta_j |
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◆ ExtraordinaryCenterVertexIndex()
| unsigned int ON_SubDQuadNeighborhood::ExtraordinaryCenterVertexIndex |
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ON_SubDVertexTag |
vertex_tag_filter, |
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unsigned int |
minimum_edge_count_filter |
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Parameters: vertex_tag_filter - [in] If vertex_tag_filter is not ON_SubDVertexTag::Unset, then the indexed vertex must have the specified tag. minimum_edge_count_filter - [in] The index vertex must have at least this many edges. Returns: 0: m_vertex_grid[1][1] is the unique extraordinary center quad vertex 1: m_vertex_grid[2][1] is the unique extraordinary center quad vertex 2: m_vertex_grid[2][2] is the unique extraordinary center quad vertex 3: m_vertex_grid[3][2] is the unique extraordinary center quad vertex ON_UNSET_UINT_INDEX (otherwise)
◆ GetLimitPoint()
| static bool ON_SubDQuadNeighborhood::GetLimitPoint |
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const ON_SubDVertex * |
vertex, |
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double |
limitP[3], |
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double |
limitN[3] |
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◆ GetLimitSubSurfaceMultiPatchCV()
Parameters: bEnableApproximatePatch - [in] If true, an approximate patches may be generated. This parameter should be true only when all permitted subdivisions have been performed and a minimum of 2 subdivisions have been performed. This insures all faces are quads and each quad has at most one extraordinary vertex and the approximate patches will have C2 continuity with any neighboring exact patches. srf_cv[5][5] CVs for a uniform cubic NURBS patch. If a patch cv srf_cv[j][j] does not exist or cannot be set, then all three coordinates of srf_cv[j][j] are set to ON_UNSET_VALUE. patch_type - [out] patch_type[0] the type of cubic bispan for the 4x4 grid (srf_cv[0][0] ... srf_cv[3][3]) patch_type[1] the type of cubic bispan for the 4x4 grid (srf_cv[1][0] ... srf_cv[4][3]) patch_type[2] the type of cubic bispan for the 4x4 grid (srf_cv[1][1] ... srf_cv[4][4]) patch_type[3] the type of cubic bispan for the 4x4 grid (srf_cv[0][1] ... srf_cv[3][4]) Returns: 0 - 4: Number of bispans set in srf_cv[5][5]
◆ GetLimitSubSurfaceSinglePatchCV()
| bool ON_SubDQuadNeighborhood::GetLimitSubSurfaceSinglePatchCV |
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unsigned int |
fvi, |
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double |
srf_cv[4][4][3] |
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Description: Get the limit sub surface exact patch for the specified corner. Returns: true when srf_cv are set to a the CVs for a bicubic uniform cubic NURBS bispan patch
◆ GetLimitSurfaceCV()
| bool ON_SubDQuadNeighborhood::GetLimitSurfaceCV |
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double * |
srf_cv, |
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unsigned int |
srf_cv_grid_size |
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Description: Get the limit surface for the entire quad
- Parameters
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| srf_cv | double srf_cv[4][4][3] |
| srf_cv_grid_size | 4 or 5 |
◆ GetSubdivisionPoint() [1/3]
| static bool ON_SubDQuadNeighborhood::GetSubdivisionPoint |
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const ON_SubDEdge * |
edge, |
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double |
P1[3] |
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◆ GetSubdivisionPoint() [2/3]
| static bool ON_SubDQuadNeighborhood::GetSubdivisionPoint |
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const ON_SubDFace * |
face, |
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double |
P1[3] |
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◆ GetSubdivisionPoint() [3/3]
| static bool ON_SubDQuadNeighborhood::GetSubdivisionPoint |
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const ON_SubDVertex * |
vertex, |
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double |
P1[3] |
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◆ GridDex()
| static ON_2dex ON_SubDQuadNeighborhood::GridDex |
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unsigned int |
grid_size, |
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unsigned int |
corner_index, |
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unsigned int |
i, |
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unsigned int |
j |
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◆ IsSet()
| bool ON_SubDQuadNeighborhood::IsSet |
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const |
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◆ IsValid()
| bool ON_SubDQuadNeighborhood::IsValid |
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const |
◆ Set()
| bool ON_SubDQuadNeighborhood::Set |
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const ON_SubDFace * |
center_quad_face | ) |
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◆ SideFace()
| const ON_SubDFace* ON_SubDQuadNeighborhood::SideFace |
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unsigned int |
fei | ) |
const |
Parameters: fei - [in] center quad face edge index (0 to 3) Returns: A pointer to the neighbor face across m_face[1][1]->Edge(fei) This face will be null if the edge is a crease or has 2 != m_face_count m_face[0][1] = the neighbor across m_face[1][1]->Edge(0) or null if the Edge(0) is a crease. m_face[1][2] = the neighbor across m_face[1][1]->Edge(1) or null if the Edge(1) is a crease m_face[2][1] = the neighbor across m_face[1][1]->Edge(2) or null if the Edge(2) is a crease m_face[1][0] = the neighbor across m_face[1][1]->Edge(3) or null if the Edge(3) is a crease
◆ Subdivide()
Description: Apply a single iteration of the built-in quad subdivision algorithm to this.
◆ m_bBoundaryCrease
| bool ON_SubDQuadNeighborhood::m_bBoundaryCrease[4] = {} |
◆ m_bExactQuadrantPatch
| bool ON_SubDQuadNeighborhood::m_bExactQuadrantPatch[4] = {} |
◆ m_bExtraordinaryCornerVertex
| bool ON_SubDQuadNeighborhood::m_bExtraordinaryCornerVertex[4] = {} |
m_bExtraordinaryCornerVertex[] = true if the corresponding corner vertex of the center quad is extraordinary.
◆ m_bIsCubicPatch
| bool ON_SubDQuadNeighborhood::m_bIsCubicPatch = false |
true if the limit surface of the center quad is a smooth bi-cubic surface with CVs at the m_vertex_grid[][] locations.
◆ m_boundary_crease_count
| unsigned char ON_SubDQuadNeighborhood::m_boundary_crease_count = 0 |
m_bBoundaryCrease[] = true if the corresponding m_center_edges[] is a crease AND neither end vertex is a dart.
◆ m_center_edges
| const ON_SubDEdge* ON_SubDQuadNeighborhood::m_center_edges[4] = {} |
edges of center face; m_center_edge[0] connects m_vertex_grid[1][1] and m_vertex_grid[2][1] m_center_edge[1] connects m_vertex_grid[2][1] and m_vertex_grid[2][2] m_center_edge[2] connects m_vertex_grid[2][2] and m_vertex_grid[1][2] m_center_edge[3] connects m_vertex_grid[1][2] and m_vertex_grid[1][1]
◆ m_current_subdivision_level
| unsigned char ON_SubDQuadNeighborhood::m_current_subdivision_level = 0 |
current subdivision level of contents
◆ m_edge_grid
| const ON_SubDEdge* ON_SubDQuadNeighborhood::m_edge_grid[4][2] = {} |
◆ m_exact_quadrant_patch_count
| unsigned char ON_SubDQuadNeighborhood::m_exact_quadrant_patch_count = 0 |
m_bExactCubicPatchCorner[] = true if the sub 4x4 grid of subdivision points for the corresponding quadrant can be used to create an exact quadrant cubic patch.
◆ m_extraordinary_corner_vertex_count
| unsigned char ON_SubDQuadNeighborhood::m_extraordinary_corner_vertex_count = 0 |
m_face_grid[1][1] is extraordinary and interpolation through the limit point will eventually be required to get an approximate cubic patch or an exact quad mesh vertex.
◆ m_face_grid
| const ON_SubDFace* ON_SubDQuadNeighborhood::m_face_grid[3][3] = {} |
m_face[][] is a 3x3 grid of faces. Center face m_face[1][1] is the "central" quad face. Side faces Side faces are null if the edge is a crease or has 1 == m_face_count. m_face[1][0] = the neighbor across m_center_edges[0] m_face[2][1] = the neighbor across m_center_edges[1] m_face[1][2] = the neighbor across m_center_edges[2] m_face[0][1] = the neighbor across m_center_edges[3]
◆ m_fsh
If not null, the storage for the referenced subd information is from m_fsh.
◆ m_initial_subdivision_level
| unsigned char ON_SubDQuadNeighborhood::m_initial_subdivision_level = 0 |
Subdivsion level of the quad from the original SubD. (When the original SubD face is an n-gon, m_initial_subdivision_level=1)
◆ m_sharp_edge_count
| unsigned char ON_SubDQuadNeighborhood::m_sharp_edge_count = 0 |
m_sharp_edge_count = number of sharp edges in the quad boundary and m_edge_grid[4][2]
◆ m_srf_cv1
| double ON_SubDQuadNeighborhood::m_srf_cv1[5][5][3] |
level 1 subdivision control points
◆ m_vertex_grid
| const ON_SubDVertex* ON_SubDQuadNeighborhood::m_vertex_grid[4][4] = {} |
vertex net m_quad_face corners = ([1][1], [2][1], [2][2], [1][2])
