dxf

package module
v0.0.0-...-5a6d1e8 Latest Latest
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 Go to latest Published: Jul 10, 2019 License: MIT Imports: 15 Imported by: 0

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

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 section
 BLOCK section
CLASSES section
 CLASSES section
Color Number
 Color Number
Package drawing defines Drawing struct for DXF.
 Package drawing defines Drawing struct for DXF.
ENTITIES section
 ENTITIES section
example
torus
DXF Output Formatter
 DXF Output Formatter
Geometrical Functions
 Geometrical Functions
Handler interface
 Handler interface
HEADER section
 HEADER section
OBJECTS section
 OBJECTS section
TABLES section
 TABLES section

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