render

package
v0.0.0-...-02f6ed8 Latest Latest
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 Go to latest Published: Nov 3, 2024 License: MIT Imports: 27 Imported by: 99

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func LoadSTL 

func LoadSTL(path string) ([]*sdf.Triangle3, error)

LoadSTL loads an STL file (ascii or binary) and returns the triangle mesh.

func Poly 

func Poly(p *sdf.Polygon, path string) error

Poly outputs a polygon as a 2D DXF file.

func SaveDXF 

func SaveDXF(path string, mesh []*sdf.Line2) error

SaveDXF writes line segments to a DXF file.

func SaveSTL 

func SaveSTL(path string, mesh []*sdf.Triangle3) error

SaveSTL writes a triangle mesh to an STL file.

func SaveSVG 

func SaveSVG(path, lineStyle string, mesh []*sdf.Line2) error

SaveSVG writes line segments to an SVG file.

func To3MF 

func To3MF(
	s sdf.SDF3,
	path string,
	r Render3,
)

To3MF renders an SDF3 to a 3MF file.

func ToDXF 

func ToDXF(
	s sdf.SDF2,
	path string,
	r Render2,
)

ToDXF renders an SDF2 to a DXF file.

func ToSTL 

func ToSTL(
	s sdf.SDF3,
	path string,
	r Render3,
)

ToSTL renders an SDF3 to an STL file.

func ToSVG 

func ToSVG(
	s sdf.SDF2,
	path string,
	r Render2,
)

ToSVG renders an SDF2 to an SVG file.

func ToTriangles 

func ToTriangles(
	s sdf.SDF3,
	r Render3,
) []*sdf.Triangle3

ToTriangles renders an SDF3 to a triangle mesh.

Types

type DXF 

type DXF struct {
	// contains filtered or unexported fields
}

DXF is a dxf drawing object.

func NewDXF 

func NewDXF(name string) *DXF

NewDXF returns an empty dxf drawing object.

func (*DXF) Box 

func (d *DXF) Box(a *sdf.Box2)

Box adds a box to a dxf drawing object.

func (*DXF) Line 

func (d *DXF) Line(line *sdf.Line2)

Line adds a line to a dxf drawing object.

func (*DXF) Lines 

func (d *DXF) Lines(lines []*sdf.Line2)

Lines adds a set of lines to a dxf drawing object.

func (*DXF) Points 

func (d *DXF) Points(s v2.VecSet, r float64)

Points adds a set of points to a dxf drawing object.

func (*DXF) Save 

func (d *DXF) Save() error

Save writes a dxf drawing object to a file.

func (*DXF) Triangle 

func (d *DXF) Triangle(t sdf.Triangle2)

Triangle adds a triangle to a dxf drawing object.

type DualContouring2D 

type DualContouring2D struct {
	// contains filtered or unexported fields
}

DualContouring2D renders is a 2D dual contouring renderer.

func NewDualContouring2D 

func NewDualContouring2D(meshCells int) *DualContouring2D

NewDualContouring2D returns a Render2 object.

func (*DualContouring2D) Info 

func (r *DualContouring2D) Info(s sdf.SDF2) string

Info returns a string describing the rendered area.

func (*DualContouring2D) Render 

func (r *DualContouring2D) Render(s sdf.SDF2, output sdf.Line2Writer)

Render produces a 2d line mesh over the bounding area of an sdf2.

type EdgeI 

type EdgeI [2]int

EdgeI is a 2d/3d edge referencing a list of vertices.

type MarchingCubesOctree 

type MarchingCubesOctree struct {
	// contains filtered or unexported fields
}

MarchingCubesOctree renders using marching cubes with octree space sampling.

func NewMarchingCubesOctree 

func NewMarchingCubesOctree(meshCells int) *MarchingCubesOctree

NewMarchingCubesOctree returns a Render3 object.

func (*MarchingCubesOctree) Info 

func (r *MarchingCubesOctree) Info(s sdf.SDF3) string

Info returns a string describing the rendered volume.

func (*MarchingCubesOctree) Render 

func (r *MarchingCubesOctree) Render(s sdf.SDF3, output sdf.Triangle3Writer)

Render produces a 3d triangle mesh over the bounding volume of an sdf3.

type MarchingCubesUniform 

type MarchingCubesUniform struct {
	// contains filtered or unexported fields
}

MarchingCubesUniform renders using marching cubes with uniform space sampling.

func NewMarchingCubesUniform 

func NewMarchingCubesUniform(meshCells int) *MarchingCubesUniform

NewMarchingCubesUniform returns a Render3 object.

func (*MarchingCubesUniform) Info 

func (r *MarchingCubesUniform) Info(s sdf.SDF3) string

Info returns a string describing the rendered volume.

func (*MarchingCubesUniform) Render 

func (r *MarchingCubesUniform) Render(s sdf.SDF3, output sdf.Triangle3Writer)

Render produces a 3d triangle mesh over the bounding volume of an sdf3.

type MarchingSquaresQuadtree 

type MarchingSquaresQuadtree struct {
	// contains filtered or unexported fields
}

MarchingSquaresQuadtree renders using marching squares with quadtree area sampling.

func NewMarchingSquaresQuadtree 

func NewMarchingSquaresQuadtree(meshCells int) *MarchingSquaresQuadtree

NewMarchingSquaresQuadtree returns a Render2 object.

func (*MarchingSquaresQuadtree) Info 

func (r *MarchingSquaresQuadtree) Info(s sdf.SDF2) string

Info returns a string describing the rendered area.

func (*MarchingSquaresQuadtree) Render 

func (r *MarchingSquaresQuadtree) Render(s sdf.SDF2, output sdf.Line2Writer)

Render produces a 2d line mesh over the bounding area of an sdf2.

type MarchingSquaresUniform 

type MarchingSquaresUniform struct {
	// contains filtered or unexported fields
}

MarchingSquaresUniform renders using marching squares with uniform area sampling.

func NewMarchingSquaresUniform 

func NewMarchingSquaresUniform(meshCells int) *MarchingSquaresUniform

NewMarchingSquaresUniform returns a Render2 object.

func (*MarchingSquaresUniform) Info 

func (r *MarchingSquaresUniform) Info(s sdf.SDF2) string

Info returns a string describing the rendered area.

func (*MarchingSquaresUniform) Render 

func (r *MarchingSquaresUniform) Render(s sdf.SDF2, output sdf.Line2Writer)

Render produces a 2d line mesh over the bounding area of an sdf2.

type PNG 

type PNG struct {
	// contains filtered or unexported fields
}

PNG is a png image object.

func NewPNG 

func NewPNG(name string, bb sdf.Box2, pixels v2i.Vec) (*PNG, error)

NewPNG returns an empty PNG object.

func (*PNG) Image 

func (d *PNG) Image() *image.RGBA

Image returns the rendered image instead of writing it to a file

func (*PNG) Line 

func (d *PNG) Line(p0, p1 v2.Vec)

Line adds a line to a png object.

func (*PNG) Lines 

func (d *PNG) Lines(s v2.VecSet)

Lines adds a set of lines line to a png object.

func (*PNG) RenderSDF2 

func (d *PNG) RenderSDF2(s sdf.SDF2)

RenderSDF2 renders a 2d signed distance field as gray scale.

func (*PNG) RenderSDF2MinMax 

func (d *PNG) RenderSDF2MinMax(s sdf.SDF2, dmin, dmax float64)

RenderSDF2MinMax renders a 2d signed distance field as gray scale (with defined min/max levels).

func (*PNG) Save 

func (d *PNG) Save() error

Save saves a png object to a file.

func (*PNG) Triangle 

func (d *PNG) Triangle(t sdf.Triangle2)

Triangle adds a triangle to a png object.

type Render2 

type Render2 interface {
	Render(s sdf.SDF2, output sdf.Line2Writer)
	Info(s sdf.SDF2) string
}

Render2 renders a 2D line set over the bounding area of an sdf2.

type Render3 

type Render3 interface {
	Render(sdf3 sdf.SDF3, output sdf.Triangle3Writer)
	Info(sdf3 sdf.SDF3) string
}

Render3 renders a 3D triangle mesh over the bounding volume of an sdf3.

type STLHeader 

type STLHeader struct {
	Count uint32 // Number of triangles
	// contains filtered or unexported fields
}

STLHeader defines the STL file header.

type STLTriangle 

type STLTriangle struct {
	Normal, Vertex1, Vertex2, Vertex3 [3]float32
	// contains filtered or unexported fields
}

STLTriangle defines the triangle data within an STL file.

type SVG 

type SVG struct {
	// contains filtered or unexported fields
}

SVG represents an SVG renderer.

func NewSVG 

func NewSVG(filename, lineStyle string) *SVG

NewSVG returns an SVG renderer.

func (*SVG) Line 

func (s *SVG) Line(p0, p1 v2.Vec)

Line outputs a line to the SVG file.

func (*SVG) Save 

func (s *SVG) Save() error

Save closes the SVG file.

type TriangleI 

type TriangleI [3]int

TriangleI is a 2d/3d triangle referencing a list of vertices.

func (*TriangleI) Canonical 

func (t *TriangleI) Canonical()

Canonical converts a triangle to it's lowest index first form. Preserve the winding order.

func (TriangleI) ToTriangle2 

func (t TriangleI) ToTriangle2(p []v2.Vec) sdf.Triangle2

ToTriangle2 given vertex indices and the vertex array, return the triangle with real vertices.

type TriangleIByIndex 

type TriangleIByIndex []TriangleI

TriangleIByIndex sorts triangles by index.

func (TriangleIByIndex) Len 

func (a TriangleIByIndex) Len() int

func (TriangleIByIndex) Less 

func (a TriangleIByIndex) Less(i, j int) bool

func (TriangleIByIndex) Swap 

func (a TriangleIByIndex) Swap(i, j int)

type TriangleISet 

type TriangleISet []TriangleI

TriangleISet is a set of triangles defined by vertice indices.

func Delaunay2d 

func Delaunay2d(vs v2.VecSet) (TriangleISet, error)

Delaunay2d returns the delaunay triangulation of a 2d point set.

func Delaunay2dSlow 

func Delaunay2dSlow(vs v2.VecSet) (TriangleISet, error)

Delaunay2dSlow returns the delaunay triangulation of a 2d point set. This is a slow reference implementation for testing faster algorithms. See: Computational Geometry, Joseph O'Rourke, 2nd edition, Code 5.1

func (TriangleISet) Canonical 

func (ts TriangleISet) Canonical() []TriangleI

Canonical converts a triangle set to it's canonical form. This common form is used to facilitate comparison between the results of different implementations.

func (TriangleISet) Equals 

func (ts TriangleISet) Equals(s TriangleISet) bool

Equals tests two triangle sets for equality.

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