add PCNBEW nanometer support to specctra round-tripper, use micro-meters to do it.

pcbnew/specctra_export.cpp

@@ -157,17 +157,42 @@ namespace DSN {
 
 const KICAD_T SPECCTRA_DB::scanPADs[] = { PCB_PAD_T, EOT };
 
+// "specctra reported units" are what we tell the external router that our
+// exported lengths are in.
+
 
 /**
  * Function scale
- * converts a distance from KiCad units to our reported specctra dsn units:
- * 1/10000 inches (deci-mils) to mils.  So the factor of 10 comes in.
+ * converts a distance from PCBNEW internal units to the reported specctra dsn units
+ * in floating point format.
  */
 static inline double scale( int kicadDist )
 {
+#if defined(USE_PCBNEW_NANOMETRES)
+
+// nanometers to um
+    return kicadDist / 1000.0;
+
+    // nanometers to mils
+    // return kicadDist/25400.0;
+
+#else
+    // deci-mils to mils.
     return kicadDist/10.0;
+#endif
+}
+
+/// Convert integer internal units to float um
+static inline double IU2um( int kicadDist )
+{
+#if defined(USE_PCBNEW_NANOMETRES)
+    return kicadDist / 1000.0;
+#else
+    return kicadDist * 25.4e-1;
+#endif
 }
 
+
 static inline double mapX( int x )
 {
     return scale(x);
@@ -367,8 +392,9 @@ PADSTACK* SPECCTRA_DB::makePADSTACK( BOARD* aBoard, D_PAD* aPad )
                 circle->SetVertex( dsnOffset );
             }
 
-            snprintf( name, sizeof(name), "Round%sPad_%.6g_mil",
-                     uniqifier.c_str(), scale(aPad->GetSize().x) );
+            snprintf( name, sizeof(name), "Round%sPad_%.6g_um",
+                     uniqifier.c_str(), IU2um( aPad->GetSize().x ) );
+
             name[ sizeof(name)-1 ] = 0;
 
             padstack->SetPadstackId( name );
@@ -398,8 +424,11 @@ PADSTACK* SPECCTRA_DB::makePADSTACK( BOARD* aBoard, D_PAD* aPad )
                 rect->SetCorners( lowerLeft, upperRight );
             }
 
-            snprintf( name, sizeof(name),  "Rect%sPad_%.6gx%.6g_mil",
-                     uniqifier.c_str(), scale(aPad->GetSize().x), scale(aPad->GetSize().y)  );
+            snprintf( name, sizeof(name),  "Rect%sPad_%.6gx%.6g_um",
+                     uniqifier.c_str(),
+                     IU2um( aPad->GetSize().x ),
+                     IU2um( aPad->GetSize().y ) );
+
             name[ sizeof(name)-1 ] = 0;
 
             padstack->SetPadstackId( name );
@@ -446,8 +475,10 @@ PADSTACK* SPECCTRA_DB::makePADSTACK( BOARD* aBoard, D_PAD* aPad )
                 path->aperture_width = 2.0 * radius;
             }
 
-            snprintf( name, sizeof(name),  "Oval%sPad_%.6gx%.6g_mil",
-                     uniqifier.c_str(), scale(aPad->GetSize().x), scale(aPad->GetSize().y)  );
+            snprintf( name, sizeof(name),  "Oval%sPad_%.6gx%.6g_um",
+                     uniqifier.c_str(),
+                     IU2um( aPad->GetSize().x ),
+                     IU2um( aPad->GetSize().y ) );
             name[ sizeof(name)-1 ] = 0;
 
             padstack->SetPadstackId( name );
@@ -493,12 +524,12 @@ PADSTACK* SPECCTRA_DB::makePADSTACK( BOARD* aBoard, D_PAD* aPad )
             D(printf( "m_DeltaSize: %d,%d\n", aPad->GetDelta().x, aPad->GetDelta().y );)
 
             // this string _must_ be unique for a given physical shape
-            snprintf( name, sizeof(name), "Trapz%sPad_%.6gx%.6g_%c%.6gx%c%.6g_mil",
-                     uniqifier.c_str(), scale(aPad->GetSize().x), scale(aPad->GetSize().y),
+            snprintf( name, sizeof(name), "Trapz%sPad_%.6gx%.6g_%c%.6gx%c%.6g_um",
+                     uniqifier.c_str(), IU2um( aPad->GetSize().x ), IU2um( aPad->GetSize().y ),
                      aPad->GetDelta().x < 0 ? 'n' : 'p',
-                     abs( scale( aPad->GetDelta().x )),
+                     abs( IU2um( aPad->GetDelta().x )),
                      aPad->GetDelta().y < 0 ? 'n' : 'p',
-                     abs( scale( aPad->GetDelta().y ))
+                     abs( IU2um( aPad->GetDelta().y ) )
                      );
             name[ sizeof(name)-1 ] = 0;
 
@@ -708,10 +739,10 @@ PADSTACK* SPECCTRA_DB::makeVia( int aCopperDiameter, int aDrillDiameter,
         circle->SetLayerId( layerIds[layer].c_str() );
     }
 
-    snprintf( name, sizeof(name),  "Via[%d-%d]_%.6g:%.6g_mil",
+    snprintf( name, sizeof(name),  "Via[%d-%d]_%.6g:%.6g_um",
              aTopLayer, aBotLayer, dsnDiameter,
              // encode the drill value into the name for later import
-             scale( aDrillDiameter )
+             IU2um( aDrillDiameter )
              );
 
     name[ sizeof(name)-1 ] = 0;
@@ -1004,6 +1035,16 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard ) throw( IO_ERROR )
 
     //-----<unit_descriptor> & <resolution_descriptor>--------------------
     {
+
+#if defined(USE_PCBNEW_NANOMETRES)
+        // tell freerouter about centi-mil
+
+        pcb->unit->units = T_um;
+        pcb->resolution->units = T_um;
+
+        pcb->resolution->value = 10;
+
+#else
         pcb->unit->units = T_mil;
         pcb->resolution->units = T_mil;
 
@@ -1013,9 +1054,9 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard ) throw( IO_ERROR )
         // resolution precisely at 1/10th for now.  For more on this, see:
         // http://www.freerouting.net/usren/viewtopic.php?f=3&t=354
         pcb->resolution->value = 10;
+#endif
     }
 
-
     //-----<boundary_descriptor>------------------------------------------
     {
         // Because fillBOUNDARY() can throw an exception, we link in an

pcbnew/specctra_import.cpp

@@ -146,6 +146,33 @@ static int scale( double distance, UNIT_RES* aResolution )
 {
     double  resValue = aResolution->GetValue();
 
+#if defined(USE_PCBNEW_NANOMETRES)
+
+    double  factor;
+
+    switch( aResolution->GetEngUnits() )
+    {
+    default:
+    case T_inch:
+        factor = 25.4e6;        // nanometers per inch
+        break;
+    case T_mil:
+        factor = 25.4e3;        // nanometers per mil
+        break;
+    case T_cm:
+        factor = 1e7;           // nanometers per cm
+        break;
+    case T_mm:
+        factor = 1e6;           // nanometers per mm
+        break;
+    case T_um:
+        factor = 1e3;           // nanometers per um
+        break;
+    }
+
+    int ret = wxRound( factor * distance / resValue );
+
+#else
     double  factor;     // multiply this times session value to get mils for KiCad.
 
     switch( aResolution->GetEngUnits() )
@@ -173,6 +200,9 @@ static int scale( double distance, UNIT_RES* aResolution )
     factor *= 10.0;
 
     int ret = wxRound( factor * distance / resValue );
+
+#endif
+
     return ret;
 }
 

polygon/PolyLine.cpp

@@ -15,11 +15,12 @@
 #include <polygon_test_point_inside.h>
 
 #if defined(KICAD_NANOMETRE)
-#define PCBU_PER_MIL (1000.0*25.4)
+#define PCBU_PER_MIL    (1000.0*25.4)
 #else
-#define PCBU_PER_MIL 10
+#define PCBU_PER_MIL    10
 #endif
 
+
 #define to_int( x ) wxRound( (x) )
 
 #ifndef MIN
@@ -115,7 +116,8 @@ int CPolyLine::NormalizeWithKbool( std::vector<CPolyLine*> * aExtraPolyList, boo
             side_style.clear();
             bool first = true;
             while( m_Kbool_Poly_Engine->PolygonHasMorePoints() )
-            {       // foreach point in the polygon
+            {
+                // foreach point in the polygon
                 int x = (int) m_Kbool_Poly_Engine->GetPolygonXPoint();
                 int y = (int) m_Kbool_Poly_Engine->GetPolygonYPoint();
                 if( first )
@@ -1406,6 +1408,7 @@ void CPolyLine::Hatch()
         spacing = 20 * PCBU_PER_MIL;
     else
         spacing = 50 * PCBU_PER_MIL;
+
     // set the "lenght" of hatch lines (the lenght on horizontal axis)
     double hatch_line_len = 20 * PCBU_PER_MIL;
 
@@ -1437,9 +1440,11 @@ void CPolyLine::Hatch()
     // loop through hatch lines
     #define MAXPTS 200      // Usually we store only few values
                             // depending on the compexity of the zone outline
+
     static std::vector <CPoint> pointbuffer;
     pointbuffer.clear();
     pointbuffer.reserve(MAXPTS+2);
+
     for( int a = min_a; a < max_a; a += spacing )
     {
         // get intersection points for this hatch line
@@ -1520,17 +1525,21 @@ void CPolyLine::Hatch()
             {
                 double dy    = pointbuffer[ip + 1].y - pointbuffer[ip].y;
                 double slope = dy / dx;
+
                 if( dx > 0 )
                     dx = hatch_line_len;
                 else
                     dx = -hatch_line_len;
+
                 double x1 = pointbuffer[ip].x + dx;
                 double x2 = pointbuffer[ip + 1].x - dx;
                 double y1 = pointbuffer[ip].y + dx * slope;
                 double y2 = pointbuffer[ip + 1].y - dx * slope;
+
                 m_HatchLines.push_back( CSegment( pointbuffer[ip].x,
                                                   pointbuffer[ip].y,
                                                   to_int( x1 ), to_int( y1 ) ) );
+
                 m_HatchLines.push_back( CSegment( pointbuffer[ip + 1].x,
                                                   pointbuffer[ip + 1].y,
                                                   to_int( x2 ), to_int( y2 ) ) );
@@ -1560,6 +1569,7 @@ bool CPolyLine::TestPointInside( int px, int py )
     {
         int istart = GetContourStart( icont );
         int iend   = GetContourEnd( icont );
+
         // Test this polygon:
         if( TestPointInsidePolygon( corner, istart, iend, px, py) )   // test point inside the current polygon
             inside = not inside;
@@ -1671,4 +1681,3 @@ void CPolyLine::AppendBezier(int x1, int y1, int x2, int y2, int x3, int y3, int
     for( unsigned int i = 0; i < bezier_points.size() ; i++)
         AppendCorner( bezier_points[i].x, bezier_points[i].y);
 }
-