I am working on building a CMM Arm with the end goal of exporting a 3D .DXF file of the object measured as well as a point cloud file (simple Tab Delimited Text file). I am having trouble with exporting the DXF as its saving as a mirrored image to the original (see processing screen shot and Solidworks import below). Where I believe I am falling into trouble is the scale and translate functions I call early on in the draw() function.
scale(1, -1); //Reverses the Y coordinate system
translate(0, -height); //Reverses the Y coordinate system
The reason I used this was to flip the Y axis so that it matches machine coordinates and not programming coordinates. If I need to I can change the hardware but that’s a bit of a nightmare at this point.
How can I export the dxf file in the correct orientation?
//============================================================
// 3D Digitizer
// Used with 3D digitizer:
// Program based off original concept by: http://fablab.ruc.dk/diy-digitizer/
// 4 Axis digitizing arm. Point Cloud export and surface shape
//============================================================
import processing.serial.*;
import peasy.*;
import processing.dxf.*;
PrintWriter output;
boolean record = false;
RawDXF dxf;
//============================================================
//-3D navigation
//============================================================
PeasyCam cam;
//============================================================
//-Digitizer
//============================================================
pointer digitizer = new pointer(this, 0);
//============================================================
// GUI controls
//============================================================
ArrayList<control> controls = new ArrayList<control>();
control ctl_clear = new control(10, 10, 'q', "Clear", "Clear all");
control ctl_point = new control(10, 10+1*40, 'p', "Point", "Mark a point");
control ctl_circle = new control(10, 10+2*40, 'c', "Circle", "Mark a hole");
control ctl_feature = new control(10, 10+3*40, 'f', "Feature", "Start a feature. Use \"Modify\" to add points");
control ctl_modify = new control(10, 10+4*40, 'm', "Modify", "Modify last figure");
control ctl_pdf = new control(10, 10+5*40, 'z', ".pdf", "Export as flat PDF file");
control ctl_dxf = new control(10, 10+6*40, 'd', ".dxf", "Export as 3D .DFX file");
//============================================================
// Objects
//============================================================
ArrayList<object> objects = new ArrayList<object>();
//============================================================
// Setup
//============================================================
void setup()
{
size(1200, 800, P3D);
output = createWriter("positions.txt");
//Set up visualizer
cam = new PeasyCam(this, 300);
cam.setMinimumDistance(50);
cam.setMaximumDistance(1000);
//Add GUI controls to display list
controls.add(ctl_clear);
controls.add(ctl_point);
ctl_point.typematic=true;
controls.add(ctl_circle);
ctl_circle.typematic=true;
controls.add(ctl_feature);
controls.add(ctl_modify);
ctl_modify.typematic=true;
controls.add(ctl_pdf);
controls.add(ctl_dxf);
background(50);
}
//============================================================
// Handy globals
//============================================================
float penX=0;
float penY=0;
float penZ=0;
float penA=0;
//PVector pen;
object currentObject=null; //-Last created object
//============================================================
// Draw
//======================================================proce======
void draw()
{
//-Get coordinated from digitizer
digitizer.update(); //-Update globals
scale(1, -1); //Reverses the Y coordinate system
translate(0, -height); //Reverses the Y coordinate system
translate(-135, 650); // Moves the background
PVector pd=new PVector(digitizer.tip.x, digitizer.tip.y);
penA=digitizer.rotation;
pd.rotate(-penA);
penX=pd.x;
penY=pd.y;
penZ=digitizer.tip.z;
// pen=digitizer.tip;
background(0);
//-Draw pad
stroke(250);
// fill(10,10,10,128);
noFill();
rect(-45, -10, 305, 235);
rotateZ(penA);
// Draw Tool Home Location
stroke(100, 500, 0);
line(248, 277, -52, 258, 277, -52); // Horizontal Line
line(248, 287, -52, 248, 277, -52); // Vertical Line
//-Draw Orign Triad
stroke(255, 0, 0); // X Axis Line
line(0, 0, 20, 0);
stroke(0, 255, 0); // Y Axis Line
line(0, 0, 0, 20);
stroke(0, 0, 255); // Z Axis Line
line(0, 0, 0, 0, 0, 20);
/*
//-Draw all objects flat projection
for (object obj : objects)
{
obj.project();
}
*/
if (record == true) {
beginRaw(DXF, "output.dxf"); // Start recording to the file
}
//-Draw all objects
for (object obj : objects)
{
obj.draw();
}
if (record == true) {
endRaw();
record = false; // Stop recording to the file
}
//-Draw cursor
pushMatrix();
rotateZ(-penA);
translate(digitizer.tip.x, digitizer.tip.y, digitizer.tip.z);
stroke(0, 255, 0);
noFill();
box(5);
popMatrix();
//-Draw Heads Up Display
cam.beginHUD();
color faceColor=color(98, 206, 198);
color textColor=color(75, 42, 0);
stroke(50);
fill(98, 206, 198);
rect(width-115, 10, 105, 90);
fill(75, 42, 0);
textSize(15);
//-Coordinates
text("X: "+penX, width-110, 30);
text("Y: "+penY, width-110, 50);
text("Z: "+penZ, width-110, 70);
text("R: "+penA, width-110, 90);
pushStyle();
//-Update GUI controls
if (ctl_clear.update())
{
objects.clear();
}
if (ctl_point.update())
{
currentObject=new gpoint(penX, penY, penZ);
objects.add(currentObject);
point(penX, penY, penZ);
output.println(penX + "\t" + penY + "\t" + penZ);
}
if (ctl_circle.update())
{
currentObject=new gcircle(penX, penY, penZ);
objects.add(currentObject);
}
if (ctl_feature.update())
{
currentObject=new gfeature(penX, penY, penZ);
objects.add(currentObject);
}
if (ctl_modify.update())
{
if (currentObject!=null)
{
currentObject.modify(new PVector(penX, penY, penZ));
}
}
// XXX PDF File Save
if (ctl_pdf.update())
{
record = true; // DXF record switch
output.flush(); // Writes the remaining data to the file
output.close(); // Finishes the file
//exit(); // Stops the program
/*
beginRaw(DXF, "output.dxf");
background(255);
translate(width/2, height/2);
// scale(2.84832);
for (object obj : objects)
{
obj.export();
}
endRaw();
/*
String s="3D_"+Integer.toString(year())+"_"+Integer.toString(day())+"_"+Integer.toString(hour())+"_"+Integer.toString(minute())+"_"+Integer.toString(second())+".pdf";
beginRecord(PDF, s);
background(255);
translate(width/2, height/2);
scale(2.84832);
for (object obj : objects)
{
obj.export();
}
endRecord();
*/
}
//-Draw GUI controls
for (control ctl : controls)
{
if (ctl.change)
ctl.draw();
if (ctl.mouseOver)
ctl.drawHelp();
}
popStyle();
cam.endHUD();
}
