spheremesh

Documentation

Index

• func NewQuadTreeFromLatLon(latLon [][2]float64) *geoquad.QuadTree
• type SphereMesh
  • func MakeSphere(seed int64, numPoints int, jitter float64) (*SphereMesh, error)
  • func NewSphereMesh(latLon [][2]float64, xyz []float64, addSouthPole bool) (*SphereMesh, error)
  • func ReadSphereMesh(r io.Reader) (*SphereMesh, error)
  • func (m *SphereMesh) MakeCoarseSphereMesh(step int) (*SphereMesh, error)
  • func (m *SphereMesh) WriteTo(w io.Writer) error
• type TriangleMesh
  • func NewTriangleMesh(numRegions int, tris, halfEdges []int) *TriangleMesh
  • func (tm *TriangleMesh) R_circulate_r(out_r []int, r int) []int
  • func (tm *TriangleMesh) R_circulate_r_no_cache(out_r []int, r int) []int
  • func (tm *TriangleMesh) R_circulate_t(out_t []int, r int) []int
  • func (tm *TriangleMesh) S_begin_r(s int) int
  • func (tm *TriangleMesh) S_end_r(s int) int
  • func (tm *TriangleMesh) S_inner_t(s int) int
  • func (tm *TriangleMesh) S_opposite_s(s int) int
  • func (tm *TriangleMesh) S_outer_t(s int) int
  • func (tm *TriangleMesh) T_circulate_r(out_r []int, t int) []int
  • func (tm *TriangleMesh) T_circulate_s(out_s []int, t int) []int

Functions

func NewQuadTreeFromLatLon

func NewQuadTreeFromLatLon(latLon [][2]float64) *geoquad.QuadTree

Types

type SphereMesh

type SphereMesh struct {
	*TriangleMesh
	XYZ         []float64         // Region coordinates
	LatLon      [][2]float64      // Region latitude and longitude
	TriXYZ      []float64         // Triangle xyz coordinates
	TriLatLon   [][2]float64      // Triangle latitude and longitude
	RegQuadTree *geoquad.QuadTree // Quadtree for region lookup
	TriQuadTree *geoquad.QuadTree // Quadtree for triangle lookup
}

func MakeSphere

func MakeSphere(seed int64, numPoints int, jitter float64) (*SphereMesh, error)

func NewSphereMesh

func NewSphereMesh(latLon [][2]float64, xyz []float64, addSouthPole bool) (*SphereMesh, error)

func ReadSphereMesh

func ReadSphereMesh(r io.Reader) (*SphereMesh, error)

ReadSphereMesh reads a sphere mesh from the given reader.

func (*SphereMesh) MakeCoarseSphereMesh

func (m *SphereMesh) MakeCoarseSphereMesh(step int) (*SphereMesh, error)

MakeCoarseSphereMesh returns a sphere mesh with 1/step density.

func (*SphereMesh) WriteTo

func (m *SphereMesh) WriteTo(w io.Writer) error

WriteTo writes the mesh to the given writer.

type TriangleMesh

type TriangleMesh struct {
	RegInSide            []int
	Triangles            []int
	Halfedges            []int
	RegionNeighborsCache [][]int
	NumSides             int
	NumRegions           int
	NumTriangles         int
	NumHalfedges         int
}

func NewTriangleMesh

func NewTriangleMesh(numRegions int, tris, halfEdges []int) *TriangleMesh

NewTriangleMesh takes partial mesh information and fills in the rest; the partial information is generated in create.js or in fromDelaunator.

func (*TriangleMesh) R_circulate_r

func (tm *TriangleMesh) R_circulate_r(out_r []int, r int) []int

R_circulate_r returns the regions adjacent to r using the cached neighbors. This is faster than r_circulate_r_no_cache, but it requires that the cached neighbors are up to date.

func (*TriangleMesh) R_circulate_r_no_cache

func (tm *TriangleMesh) R_circulate_r_no_cache(out_r []int, r int) []int

R_circulate_r_no_cache returns the regions adjacent to r without using the cached neighbors. This is slower than r_circulate_r, but it does not require that the cached neighbors are up to date.

func (*TriangleMesh) R_circulate_t

func (tm *TriangleMesh) R_circulate_t(out_t []int, r int) []int

func (*TriangleMesh) S_begin_r

func (tm *TriangleMesh) S_begin_r(s int) int

func (*TriangleMesh) S_end_r

func (tm *TriangleMesh) S_end_r(s int) int

func (*TriangleMesh) S_inner_t

func (tm *TriangleMesh) S_inner_t(s int) int

func (*TriangleMesh) S_opposite_s

func (tm *TriangleMesh) S_opposite_s(s int) int

func (*TriangleMesh) S_outer_t

func (tm *TriangleMesh) S_outer_t(s int) int

func (*TriangleMesh) T_circulate_r

func (tm *TriangleMesh) T_circulate_r(out_r []int, t int) []int

func (*TriangleMesh) T_circulate_s

func (tm *TriangleMesh) T_circulate_s(out_s []int, t int) []int