DXFOperator

This Project is to write AutoCAD DXF file without AutoCAD environment.It is my first java exercise.

It services for enterprise designing tasks, such as lofting, nesting .....

Main File: FileDXF.java
FileDXFTest.java

EntArcTest
EntBase
---- EntArc
---- EntCircle
---- EntLine
---- EntPoint
---- EntPolyline
---- EntText
---- EntVertex
EntBaseTest
EntCircleTest
EntLineTest
EntPointTest
EntPolylineTest
EntTextTest
EntVertexTest
FileDXF
FileDXFTest
SecBlocks
SecBlocksTest
SecClasses
SecClassesTest
SecEntities
SecEntitiesTest
SecHeader
SecHeaderTest
SecObjects
SecObjectsTest
SecTables
SecTablesTest
wPoint
wPoint2D
wPoint2DTest
wPointTest

Easy to use: FileDXF myFileDXF = new FileDXF();

	myFileDXF.AddPoint(2,2);
	myFileDXF.AddPoint(3,3,0);
	myFileDXF.AddLine(0,-80,300,-80);
	myFileDXF.AddLine(0,-80,0,300,-80,0);
	myFileDXF.AddCircle(0,0,80);
	myFileDXF.AddCircle(0,0,0,80);

	/*
	Others:
	myFileDXF.AddArc(0,0,90,0,90);
	myFileDXF.AddArc(0,0,0,90,0,90);
	myFileDXF.AddText(0,0,8,"Test");
	myFileDXF.AddText(0,0,0,8,"Test\r\nline 2");
	
	double[][] mypoints = {{0,0},{5,5},{10,8}};		
	myFileDXF.AddPolyline(mypoints);
	*/
	

	myFileDXF.DXF_WRITER();

Then create one DXF file: loft_output_2019_01_03_08_39_06_0.dxf

More complex example:

public void AddShape810(double A,double B,double C,double D,double E,double F,double G,double H){
	wPoint2D PO;
	wPoint2D Pa,Pb,Pc,Pd;
	wPoint2D P1,P2,P3,P4;
	wPoint2D Po1,Po2,Po3,Po4;
	
	PO = new wPoint2D(0,0);
	
	Po1 = new wPoint2D(F + G,Math.sqrt(Math.pow(E / 2 + G,2) - Math.pow(F + G, 2)));
	P1 = new wPoint2D(Po1.x - G,Po1.y);
	Pa = new wPoint2D(Po1.x*((E / 2)/(E/2+G)),Po1.y*((E/2)/(E/2+G)));
	
	Po2 = new wPoint2D(Po1.x,-Po1.y);
	P2 = new wPoint2D(P1.x,-P1.y);
	Pb = new wPoint2D(Pa.x,-Pa.y);
	
	Po3 = new wPoint2D(-Po1.x,-Po1.y);
	P3 = new wPoint2D(-P1.x,-P1.y);
	Pc = new wPoint2D(-Pa.x,-Pa.y);
	
	Po4 = new wPoint2D(-Po1.x,Po1.y);
	P4 = new wPoint2D(-P1.x,P1.y);
	Pd = new wPoint2D(-Pa.x,Pa.y);
	
	this.AddLine(P3.x,P3.y,-F,-C/2);
	this.AddLine(-F,-C/2,-F-A,-C/2);
	this.AddLine(-F-A,-C/2,-F-A,C/2);
	this.AddLine(-F-A,C/2,-F,C/2);
	this.AddLine(-F,C/2,P4.x,P4.y);
	
	this.AddArc(Po4,Pd,P4);
	this.AddArc(PO,Pd,Pc);
	this.AddArc(Po3,P3,Pc);

	this.AddLine(P2.x,P2.y,F,-C/2);
	this.AddLine(F,-C/2,F+H,-C/2);
	this.AddLine(F+H,-C/2,F+H+B,-D/2);
	this.AddLine(F+H+B,-D/2,F+H+B,D/2);
	this.AddLine(F+H+B,D/2,F+H,C/2);
	this.AddLine(F+H,C/2,F,C/2);
	this.AddLine(F,C/2,P1.x,P1.y);

	this.AddArc(Po1,P1,Pa);
	this.AddArc(PO,Pb,Pa);
	this.AddArc(Po2,Pb,P2);
	
}

You would get one dxf file just like the following:

SigmaNest Parts

intersection of two Cylinders to expand

intersection lines of Belted Pipe and straight pipe

BiArc Curve Fittiing

convert dxf file to jpg file

Other jobs:

1.BiArc Curve Fitting -- DONE
2.Geometry Lofting -- Completed two types
3.Computer Geometry Base Class -- NOP

*@author David Wu

809758521@qq.com

*@version 0.5