#require 4.1105

#usage "en: <b>Export outlines data</b>\n"
           "<p>"
           "Generates outlines data for a board layout."
           "<p>"
           "Usage: RUN outlines [ <i>device</i> [ <i>width</i> [ <i>layer</i> [ <i>filename</i> ]]]]"
           "<p>"
           "<table>"
           "<tr><td>device:</td><td>Script | HPGL</td><tr>"
           "<tr><td>width:</td><td>outlines width [mm]</td><tr>"
           "<tr><td>layer:</td><td>1..16 (0 = active layer)</td><tr>"
           "<tr><td>filename:</td><td>output file name</td><tr>"
           "</table>"
           "<p>"
           "<author>Author: support@cadsoft.de</author>",
       "de: <b>Konturdaten exportieren</b>\n"
           "<p>"
           "Erzeugt Konturdaten für ein Platinenlayout."
           "<p>"
           "Aufruf: RUN outlines [ <i>device</i> [ <i>width</i> [ <i>layer</i> [ <i>filename</i> ]]]]"
           "<p>"
           "<table>"
           "<tr><td>device:</td><td>Script | HPGL</td><tr>"
           "<tr><td>width:</td><td>Breite der Konturlinien [mm]</td><tr>"
           "<tr><td>layer:</td><td>1..16 (0 = aktiver Layer)</td><tr>"
           "<tr><td>filename:</td><td>Ausgabedatei</td><tr>"
           "</table>"
           "<p>"
           "<author>Autor: support@cadsoft.de</author>"

// THIS PROGRAM IS PROVIDED AS IS AND WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED

/*
   Complete the following steps to add a new output device definition:

   1. Add a new member to the 'enum { devScript = 1, ...'
   2. Add the new (unique!) device name to 'DeviceNames[]'
   3. Add the necessary 'case dev...' branches to 'DeviceInit()', 'DeviceDraw()' and 'DeviceEnd()'
*/

string I18N[] = {
  "en\v"
  "de\v"
  ,
  "ERROR: \v"
  "FEHLER: \v"
  ,
  "No board!\v"
  "Kein Board!\v"
  ,
  "This program can only work in the board editor.\v"
  "Dieses Programm kann nur im Board-Editor angewendet werden.\v"
  ,
  "Illegal width: \v"
  "Ungültige Breite: \v"
  ,
  "The <i>width</i> must be greater than zero.\v"
  "Die <i>Breite</i> muß größer als 0 sein.\v"
  ,
  "Illegal layer: \v"
  "Ungültiger Layer: \v"
  ,
  "The <i>layer</i> must be one of 1..16 or 0 to use the current layer.\v"
  "Der <i>Layer</i> muß im Bereich 1..16 liegen, oder 0 sein um den aktuellen Layer zu wählen.\v"
  ,
  "Select a device\v"
  "Wählen Sie ein Ausgabegerät\v"
  ,
  "There is already a signal named \v"
  "Es existiert bereits ein Signal namens \v"
  ,
  " in this board!\v"
  " in diesem Board!\v"
  ,
  "Please make sure that there is no such signal in this board.\v"
  "Bitte sorgen Sie dafür, daß es kein solches Signal in diesem Board gibt.\v"
  ,
  "Illegal device: \v"
  "Ungültiges Ausgabegerät: \v"
  ,
  "Please select one of the known devices.\v"
  "Bitte wählen Sie eines der bekannten Ausgabegeräte aus.\v"
  ,
  "No signal layer active!\v"
  "Kein Signal-Layer aktiv!\v"
  ,
  "Please activate the signal layer to generate outlines for.\v"
  "Bitte aktivieren den Signal-Layer für den Konturdaten generiert werden sollen.\v"
  ,
  "Invalid layer: \v"
  "Ungültiger Layer: \v"
  ,
  "The <i>layer</i> was not found or is not active.\v"
  "Der <i>Layer</i> konnte nicht gefunden werden oder ist nicht aktiv.\v"
  ,
  "Outlines Generator\v"
  "Konturdaten-Generator\v"
  ,
  "&Width\v"
  "&Breite\v"
  ,
  "&Layer\v"
  "&Layer\v"
  ,
  "&Output file\v"
  "&Ausgabedatei\v"
  ,
  "&Browse\v"
  "&Durchsuchen\v"
  ,
  "Save Outlines file\v"
  "Konturdaten speichern\v"
  ,
  "+OK\v"
  "+OK\v"
  ,
  "No device selected!\v"
  "Kein Ausgabegerät ausgewählt!\v"
  ,
  "Please select a device.\v"
  "Bitte wählen Sie ein Ausgabegerät.\v"
  ,
  "Illegal width: 0\v"
  "Ungültige Breite: 0\v"
  ,
  "The <i>width</i> must be greater than zero.\v"
  "Die <i>Breite</i> muß größer als Null sein.\v"
  ,
  "-Cancel\v"
  "-Abbrechen\v"
  ,
  "About\v"
  "Info\v"
  };

int Language = strstr(I18N[0], language()) / 3;

string tr(string s)
{
  string t = lookup(I18N, s, Language, '\v');
  return t ? t : s;
}

void Fatal(string Message, string Details)
{
  dlgMessageBox(usage + "<hr><b>" + tr("ERROR: ") + Message + "</b><p>\n" + Details);
  exit(1);
}

void Error(string Message, string Details)
{
  dlgMessageBox("<b>" + tr("ERROR: ") + Message + "</b><p>\n" + Details);
}

//
// Parmameters
//

string DefaultSuffix = ".out";

string Device;
real   Width = 0;
int    Layer = 0;
string FileName;

if (!board)
   Fatal(tr("No board!"), tr("This program can only work in the board editor."));

if (argv[1]) {
   Device = argv[1];
   if (argv[2]) {
      Width = strtod(argv[2]);
      if (Width <= 0)
         Fatal(tr("Illegal width: ") + argv[2], tr("The <i>width</i> must be greater than zero."));
      if (argv[3]) {
         Layer = strtol(argv[3]);
         if (Layer < 0 || Layer > 16)
            Fatal(tr("Illegal layer: ") + argv[3], tr("The <i>layer</i> must be one of 1..16 or 0 to use the current layer."));
         if (argv[4]) {
            FileName = argv[4];
            }
         }
      }
   }

if (!FileName)
   board(B) FileName = filesetext(B.name, DefaultSuffix);

//
// The various output devices
//

enum { devScript = 1, devHPGL };
string DeviceNames[] = { tr("Select a device"), "Script", "HPGL" };
int SelectedDevice;

void DeviceInit(void)
{
  // Do anything necessary to initialize the output device
  switch (SelectedDevice) {
    case devScript:
         // TODO make the layer user definable?
         printf("layer %d;\nset wire_bend 2; grid mm; change width %f;\n", Layer + 100, Width);
         break;
    case devHPGL:
         break;
    }
}

void DeviceDraw(int x1, int y1, int x2, int y2, int state)
{
  // Actually draw a line on the output device.
  // 'state' is defined as
  // 0 = this is the first line of a partial polygon
  // 1 = this is a "normal" line (neither the first nor the last one)
  // 2 = this is the last line of a partial polygon
  switch (SelectedDevice) {
    case devScript:
         if (state == 0)
            printf("wire (%f %f) (%f %f)", u2mm(x1), u2mm(y1), u2mm(x2), u2mm(y2));
         else {
            printf(" (%f %f)", u2mm(x2), u2mm(y2));
            if (state == 2)
               printf(";\n");
            }
         break;
    case devHPGL:
         if (state == 0)
            printf("PU; PA %f %f; PD; PA %f %f;", u2mm(x1), u2mm(y1), u2mm(x2), u2mm(y2));
         else {
            printf(" PA %f %f", u2mm(x2), u2mm(y2));
            if (state == 2)
               printf("\n");
            }
         break;
    }
}

void DeviceEnd(void)
{
  // Do anything necessary to end output to the device
  switch (SelectedDevice) {
    case devScript:
         break;
    case devHPGL:
         printf("PU;\n");
         break;
    }
}

//
// The actual outlines generator
//

string OutlinesSignalName = "_OUTLINES_";
string Pass2 = "PASS_2";

int InPass2 = argv[5] == Pass2;

void GenerateOutlines(void)
{
  board(B) {
    real f = 20, // mm frame
         x1 = u2mm(B.area.x1) - f, y1 = u2mm(B.area.y1) - f,
         x2 = u2mm(B.area.x2) + f, y2 = u2mm(B.area.y2) + f;
    B.signals(S) {
      if (S.name == OutlinesSignalName)
         Fatal(tr("There is already a signal named ") + OutlinesSignalName + tr(" in this board!"), tr("Please make sure that there is no such signal in this board."));
      }
    string Cmd;
    sprintf(Cmd, "grid mm;\n"
                 "window fit;\n"
                 "change isolate 0;\n"
                 "change rank 6;\n"
                 "change pour solid;\n"
                 "change orphans on;\n"
                 "layer %d;\n"
                 "polygon %s %f (%f %f) (%f %f) (%f %f) (%f %f) (%f %f);\n"
                 "ratsnest;\n"
                 "run '%s' '%s' '%f' '%d' '%s' '%s';",
                 Layer,
                 OutlinesSignalName, Width, x1, y1, x2, y1, x2, y2, x1, y2, x1, y1,
                 argv[0], Device, Width, Layer, FileName, Pass2);
    exit(Cmd);
    }
}

void WriteOutlines(void)
{
  board(B) {
    output(FileName) {
      string Cmd;
      B.signals(S) {
        if (S.name == OutlinesSignalName) {
           S.polygons(P) {
             int x1 = INT_MAX, y1 = INT_MAX, x2 = INT_MIN, y2 = INT_MIN;
             int x0, y0, first = 1;
             int FrameWire;
             int State;

             P.wires(W) {
               x1 = min(x1, W.x1);
               x2 = max(x2, W.x1);
               y1 = min(y1, W.y1);
               y2 = max(y2, W.y1);
               }
             DeviceInit();
             P.contours(W) {
               if (first) {
                  // a new partial polygon is starting
                  x0 = W.x1;
                  y0 = W.y1;
                  FrameWire = (x1 == x0 || x2 == x0) && (y1 == y0 || y2 == y0);
                  State = 0;
                  first = 0;
                  }
               else if (W.x2 == x0 && W.y2 == y0) {
                  // this was the last wire of the partial polygon,
                  // so the next wire (if any) will be the first wire
                  // of the next partial polygon
                  State = 2;
                  first = 1;
                  }
               else
                  State = 1;
               if (!FrameWire)
                  DeviceDraw(W.x1, W.y1, W.x2, W.y2, State);
               }
             DeviceEnd();
             sprintf(Cmd, "delete (%f %f) (%f %f); window fit;\n", u2mm(x1), u2mm(y1), u2mm(x2), u2mm(y2));
             }
           break;
           }
        }
      exit(Cmd);
      }
    }
}

//
// Main program:
//

if (Device) {
   int n;
   while (DeviceNames[n]) {
         if (strupr(DeviceNames[n]) == strupr(Device)) {
            SelectedDevice = n;
            break;
            }
         n++;
         }
   if (!SelectedDevice)
      Fatal(tr("Illegal device: ") + Device, tr("Please select one of the known devices."));
   }

if (!InPass2) {
   string Layers[];
   int    SelectedLayer = -1;
   int    ForceDialog = (!Device || !Width);

   board(B) {
     int n;
     B.layers(L) {
       if (L.number <= 16 && L.visible) {
          if (Layer == L.number)
             SelectedLayer = n;
          sprintf(Layers[n++], "%d  %s", L.number, L.name);
          }
       }
     if (n == 0)
        Fatal(tr("No signal layer active!"), tr("Please activate the signal layer to generate outlines for."));
     if (!Layer) {
        if (n > 1)
           ForceDialog = 1;
        SelectedLayer = 0;
        }
     if (SelectedLayer < 0) {
        string s;
        sprintf(s, "%d", Layer);
        Fatal(tr("Invalid layer: ") + s, tr("The <i>layer</i> was not found or is not active."));
        }
     }

   if (ForceDialog) {
      dlgDialog(tr("Outlines Generator")) {
        dlgGridLayout {
          dlgCell(0, 0) dlgLabel("&Device");
          dlgCell(0, 1) dlgComboBox(DeviceNames, SelectedDevice) {
            // TODO should we generalize this?
            if (FileName && SelectedDevice == devScript)
               FileName = filesetext(FileName, ".scr");
            }
          dlgCell(1, 0) dlgLabel(tr("&Width"));
          dlgCell(1, 1) dlgRealEdit(Width, 0, 10);
          dlgCell(2, 0) dlgLabel(tr("&Layer"));
          dlgCell(2, 1) dlgComboBox(Layers, SelectedLayer);
          }
        dlgHBoxLayout {
          dlgLabel(tr("&Output file"));
          dlgStringEdit(FileName);
          dlgPushButton(tr("&Browse")) {
            string fn = dlgFileSave(tr("Save Outlines file"), FileName);
            if (fn)
               FileName = fn;
            }
          }
        dlgStretch(1);
        dlgHBoxLayout {
          dlgStretch(1);
          dlgPushButton(tr("+OK")) {
            if (!SelectedDevice)
               Error(tr("No device selected!"), tr("Please select a device."));
            else if (!Width)
               Error(tr("Illegal width: 0"), tr("The <i>width</i> must be greater than zero."));
            else
               dlgAccept();
            }
          dlgPushButton(tr("-Cancel")) { dlgReject(); exit(1); }
          dlgPushButton(tr("About")) dlgMessageBox(usage);
          }
        };
      }
   Device = DeviceNames[SelectedDevice];
   Layer = strtol(Layers[SelectedLayer]);
   GenerateOutlines();
   }
else
   WriteOutlines();