dxf

package module

v0.0.0-...-5a6d1e8 Latest Latest Go to latest Published: Jul 10, 2019 License: MIT Imports: 15 Imported by: 18

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Repository

github.com/yofu/dxf

Links

Open Source Insights

README ¶

#dxf

DXF(Drawing Exchange Format by Autodesk, Inc) library for golang.

version: ACAD2000(AC1015)
format : ASCII

is only supported.

Reference

http://www.autodesk.com/techpubs/autocad/acad2000/dxf/index.htm

Example

package main

import (
	"github.com/yofu/dxf"
	"github.com/yofu/dxf/color"
	"github.com/yofu/dxf/table"
	"log"
	"math"
)

func main() {
	d := dxf.NewDrawing()
	d.Header().LtScale = 100.0
	d.AddLayer("Toroidal", dxf.DefaultColor, dxf.DefaultLineType, true)
	d.AddLayer("Poloidal", color.Red, table.LT_HIDDEN, true)
	z := 0.0
	r1 := 200.0
	r2 := 500.0
	ndiv := 16
	dtheta := 2.0 * math.Pi / float64(ndiv)
	theta := 0.0
	for i := 0; i < ndiv; i++ {
		d.ChangeLayer("Toroidal")
		d.Circle(0.0, 0.0, z+r1*math.Cos(theta), r2-r1*math.Sin(theta))
		d.ChangeLayer("Poloidal")
		c, _ := d.Circle(r2*math.Cos(theta), r2*math.Sin(theta), 0.0, r1)
		dxf.SetExtrusion(c, []float64{-1.0 * math.Sin(theta), math.Cos(theta), 0.0})
		theta += dtheta
	}
	err := d.SaveAs("torus.dxf")
	if err != nil {
		log.Fatal(err)
	}
}

Torus

Installation

$ go get github.com/yofu/dxf

License

MIT

Author

Yoshihiro FUKUSHIMA

Documentation ¶

Overview ¶

Package dxf is a DXF(Drawing Exchange Format) library for golang. ACAD2000(AC1015), ASCII format is only supported. http://www.autodesk.com/techpubs/autocad/acad2000/dxf/index.htm

Index ¶

Variables
func ColorIndex(cl []int) color.ColorNumber
func FromFile(fn string) (*drawing.Drawing, error)
func FromReader(r io.Reader) (*drawing.Drawing, error)
func FromStringData(d string) (*drawing.Drawing, error)
func IndexColor(index uint8) []uint8
func NewDrawing() *drawing.Drawing
func Open(filename string) (*drawing.Drawing, error)
func Parse3DFace(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseAppID(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseArc(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseBlock(d *drawing.Drawing, data [][2]string) error
func ParseBlockRecord(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseBlocks(d *drawing.Drawing, line int, data [][2]string) error
func ParseCircle(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseClasses(d *drawing.Drawing, line int, data [][2]string) error
func ParseDimStyle(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseEntities(d *drawing.Drawing, line int, data [][2]string) error
func ParseEntity(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseEntityFunc(t string) (func(*drawing.Drawing, [][2]string) (entity.Entity, error), error)
func ParseHeader(d *drawing.Drawing, line int, data [][2]string) error
func ParseLayer(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseLine(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseLtype(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseLwPolyline(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseObjects(d *drawing.Drawing, line int, data [][2]string) error
func ParsePoint(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseStyle(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseTable(d *drawing.Drawing, data [][2]string, index int, ...) error
func ParseTables(d *drawing.Drawing, line int, data [][2]string) error
func ParseText(d *drawing.Drawing, data [][2]string) (entity.Entity, error)
func ParseUCS(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseView(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func ParseViewport(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)
func SetExtrusion(e Extruder, d []float64)
type Extruder

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	DefaultColor    = color.White
	DefaultLineType = table.LT_CONTINUOUS
)

Default values.

Functions ¶

func ColorIndex ¶

func ColorIndex(cl []int) color.ColorNumber

ColorIndex converts RGB value to corresponding color number.

func FromFile ¶

func FromFile(fn string) (*drawing.Drawing, error)

Create drawing from file

func FromReader ¶

func FromReader(r io.Reader) (*drawing.Drawing, error)

Main logic to create a drawing

func FromStringData ¶

func FromStringData(d string) (*drawing.Drawing, error)

Create drawing from string

func IndexColor ¶

func IndexColor(index uint8) []uint8

IndexColor converts color number to RGB value.

func NewDrawing ¶

func NewDrawing() *drawing.Drawing

NewDrawing creates a drawing.

func Open ¶

func Open(filename string) (*drawing.Drawing, error)

Open is deprecated, please use FromFile

func Parse3DFace ¶

func Parse3DFace(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

Parse3DFace parses 3DFACE entities.

func ParseAppID ¶

func ParseAppID(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseAppID parses APPID tables.

func ParseArc ¶

func ParseArc(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseArc parses ARC entities.

func ParseBlock ¶

func ParseBlock(d *drawing.Drawing, data [][2]string) error

ParseBlock parses each BLOCK, which starts with "0\nBLOCK\n" and ends with "0\nENDBLK\n".

func ParseBlockRecord ¶

func ParseBlockRecord(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseBlockRecord parses BLOCK_RECORD tables.

func ParseBlocks ¶

func ParseBlocks(d *drawing.Drawing, line int, data [][2]string) error

ParseBlocks parses BLOCKS section.

func ParseCircle ¶

func ParseCircle(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseCircle parses CIRCLE entities.

func ParseClasses ¶

func ParseClasses(d *drawing.Drawing, line int, data [][2]string) error

ParseClasses parses CLASSES section.

func ParseDimStyle ¶

func ParseDimStyle(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseDimStyle parses DIMSTYLE tables.

func ParseEntities ¶

func ParseEntities(d *drawing.Drawing, line int, data [][2]string) error

ParseEntities parses ENTITIES section.

func ParseEntity ¶

func ParseEntity(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseEntity parses each entity.

func ParseEntityFunc ¶

func ParseEntityFunc(t string) (func(*drawing.Drawing, [][2]string) (entity.Entity, error), error)

ParseEntityFunc returns a function for parsing acoording to entity type string.

func ParseHeader ¶

func ParseHeader(d *drawing.Drawing, line int, data [][2]string) error

ParseHeader parses HEADER section.

func ParseLayer ¶

func ParseLayer(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseLayer parses LAYER tables.

func ParseLine ¶

func ParseLine(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseLine parses LINE entities.

func ParseLtype ¶

func ParseLtype(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseLtype parses LTYPE tables.

func ParseLwPolyline ¶

func ParseLwPolyline(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseLwPolyline parses LWPOLYLINE entities.

func ParseObjects ¶

func ParseObjects(d *drawing.Drawing, line int, data [][2]string) error

ParseObjects parses OBJECTS section.

func ParsePoint ¶

func ParsePoint(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParsePoint parses POINT entities.

func ParseStyle ¶

func ParseStyle(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseStyle parses STYLE tables.

func ParseTable ¶

func ParseTable(d *drawing.Drawing, data [][2]string, index int, parser func(*drawing.Drawing, [][2]string) (table.SymbolTable, error)) error

ParseTable parses each TABLE, which starts with "0\nTABLE\n" and ends with "0\nENDTAB\n".

func ParseTables ¶

func ParseTables(d *drawing.Drawing, line int, data [][2]string) error

ParseTables parses TABLES section.

func ParseText ¶

func ParseText(d *drawing.Drawing, data [][2]string) (entity.Entity, error)

ParseText parses TEXT entities.

func ParseUCS ¶

func ParseUCS(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseUCS parses UCS tables.

func ParseView ¶

func ParseView(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseView parses VIEW tables.

func ParseViewport ¶

func ParseViewport(d *drawing.Drawing, data [][2]string) (table.SymbolTable, error)

ParseViewport parses VPORT tables.

func SetExtrusion ¶

func SetExtrusion(e Extruder, d []float64)

SetExtrusion sets new coord acoording to given direction.

Types ¶

type Extruder ¶

type Extruder interface {
	CurrentDirection() []float64
	SetDirection([]float64)
	CurrentCoord() []float64
	SetCoord([]float64)
}

Extruder represents an entity with code 210, 220, 230 like Circle.

210: Extrusion direction (optional; default = 0, 0, 1)
X value
220, 230: Y and Z values of extrusion direction (optional)

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
block BLOCK section	BLOCK section
class CLASSES section	CLASSES section
color Color Number	Color Number
drawing Package drawing defines Drawing struct for DXF.	Package drawing defines Drawing struct for DXF.
entity ENTITIES section	ENTITIES section
example
torus
format DXF Output Formatter	DXF Output Formatter
geometry Geometrical Functions	Geometrical Functions
handle Handler interface	Handler interface
header HEADER section	HEADER section
insunit
object OBJECTS section	OBJECTS section
table TABLES section	TABLES section

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