Added a new pad type: trace pads, for antennas and other trace-like elements.

- layer.h (enum pad_type): added pad type pt_trace
- layer.c (pad_type_to_layers, layers_to_pad_type), inst.c (inst_pad):
  "trace" pad instantition and conversion infrastructure
- fpd.y (pad_type), dump.c (print_obj): .fpd file I/O for "trace" pads
- postscript.c (prologue): added Postscript function "horpath" to produce
  horizontal stripes
- postscript.c (hatch): show "trace" pads with horizontal stripes
- gui_style.h (gc_pad_trace), gui_style.c (gc_pad_trace, gui_setup_style),
  gui_inst.c (pad_gc): added visualization of "trace" pads
- gui_status.c (show_pad_type): added "trace" pad type
- README: added description of "trace" pads
- README: added usage examples for the various pad types



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5998 99fdad57-331a-0410-800a-d7fa5415bdb3

README

@@ -270,9 +270,17 @@ Type		Layers
 ---------	-------------------------------------
 (default)	copper, solder mask, and solder paste
 bare		copper and solder mask
+trace		copper without solder mask opening
 paste		solder paste
 mask		solder mask
 
+Typical uses:
+- "bare": connectors printed directly on the PCB
+- "trace": connections or antennas
+- "paste": sparse solder paste, e.g., for QFN center pads
+- "mask": non-standard mask openings, e.g., for solder mask defined
+  pads
+
 
 Rounded pads
 - - - - - -

dump.c

@@ -1,8 +1,8 @@
 /*
  * dump.c - Dump objects in the native FPD format
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -345,6 +345,9 @@ char *print_obj(const struct obj *obj, const struct vec *prev)
 		case pt_bare:
 			s2 = " bare";
 			break;
+		case pt_trace:
+			s2 = " trace";
+			break;
 		case pt_paste:
 			s2 = " paste";
 			break;

fpd.y

@@ -2,8 +2,8 @@
 /*
  * fpd.y - FootPrint Definition language
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -986,6 +986,8 @@ pad_type:
 		{
 			if (!strcmp($1, "bare"))
 				$$ = pt_bare;
+			else if (!strcmp($1, "trace"))
+				$$ = pt_trace;
 			else if (!strcmp($1, "paste"))
 				$$ = pt_paste;
 			else if (!strcmp($1, "mask"))

gui_inst.c

@@ -1,8 +1,8 @@
 /*
  * gui_inst.c - GUI, instance functions
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -319,6 +319,8 @@ static GdkGC *pad_gc(const struct inst *inst, int *fill)
 	switch (layers_to_pad_type(inst->u.pad.layers)) {
 	case pt_bare:
 		return gc_pad_bare[get_mode(inst)];
+	case pt_trace:
+		return gc_pad_trace[get_mode(inst)];
 	case pt_mask:
 		*fill = FALSE;
 		return gc_pad_mask[get_mode(inst)];

gui_status.c

@@ -1,8 +1,8 @@
 /*
  * gui_status.c - GUI, status area
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -204,6 +204,9 @@ static void show_pad_type(void)
 	case pt_bare:
 		s = "bare";
 		break;
+	case pt_trace:
+		s = "trace";
+		break;
 	case pt_paste:
 		s = "paste";
 		break;

gui_style.c

@@ -1,7 +1,8 @@
-/* * gui_style.c - GUI, style definitions
+/*
+ * gui_style.c - GUI, style definitions
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,6 +27,7 @@ GdkGC *gc_vec[mode_n];
 GdkGC *gc_obj[mode_n];
 GdkGC *gc_pad[mode_n];
 GdkGC *gc_pad_bare[mode_n];
+GdkGC *gc_pad_trace[mode_n];
 GdkGC *gc_pad_mask[mode_n];
 GdkGC *gc_ptext[mode_n];
 GdkGC *gc_rim[mode_n];
@@ -68,6 +70,7 @@ void gui_setup_style(GdkDrawable *drawable)
 	style(gc_obj,		"#006060", "#00ffff", "#ffff80", 1);
 	style(gc_pad,		"#400000", "#ff0000", "#ffff80", 1);
 	style(gc_pad_bare,	"#402000", "#ff6000", "#ffff80", 1);
+	style(gc_pad_trace,	"#304000", "#80c000", "#ffff80", 1);
 	style(gc_pad_mask,	"#000040", "#0000ff", "#ffff80", 2);
 	style(gc_ptext,		"#404040", "#ffffff", "#ffffff", 1);
 	style(gc_hole,		"#000000", "#000000", "#000000", 0);

gui_style.h

@@ -1,8 +1,8 @@
 /*
  * gui_style.h - GUI, style definitions
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -114,6 +114,7 @@ extern GdkGC *gc_vec[mode_n];
 extern GdkGC *gc_obj[mode_n];
 extern GdkGC *gc_pad[mode_n];
 extern GdkGC *gc_pad_bare[mode_n];
+extern GdkGC *gc_pad_trace[mode_n];
 extern GdkGC *gc_pad_mask[mode_n];
 extern GdkGC *gc_ptext[mode_n];
 extern GdkGC *gc_rim[mode_n];

inst.c

@@ -1,8 +1,8 @@
 /*
  * inst.c - Instance structures
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -896,7 +896,8 @@ int inst_pad(struct obj *obj, const char *name, struct coord a, struct coord b)
 	struct inst *inst;
 
 	inst = add_inst(obj->u.pad.rounded ? &rpad_ops : &pad_ops,
-	    obj->u.pad.type == pt_normal || obj->u.pad.type == pt_bare ?
+	    obj->u.pad.type == pt_normal || obj->u.pad.type == pt_bare ||
+	    obj->u.pad.type == pt_trace ?
 	    ip_pad_copper : ip_pad_special, a);
 	inst->obj = obj;
 	inst->u.pad.name = stralloc(name);

layer.c

@@ -1,8 +1,8 @@
 /*
  * layer.c - PCB layers on a pad
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -52,6 +52,9 @@ layer_type pad_type_to_layers(enum pad_type type)
 	case pt_bare:
 		layers |= LAYER_COPPER_TOP | LAYER_MASK_TOP;
 		break;
+	case pt_trace:
+		layers |= LAYER_COPPER_TOP;
+		break;
 	case pt_paste:
 		layers = LAYER_PASTE_TOP;
 		break;
@@ -70,7 +73,9 @@ enum pad_type layers_to_pad_type(layer_type layers)
 	if (layers & LAYER_COPPER_TOP) {
 		if (layers & LAYER_PASTE_TOP)
 			return pt_normal;
+		if (layers & LAYER_MASK_TOP)
 			return pt_bare;
+		return pt_trace;
 	} else {
 		if (layers & LAYER_PASTE_TOP)
 			return pt_paste;

layer.h

@@ -1,8 +1,8 @@
 /*
  * layer.h - PCB layers on a pad
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -57,6 +57,7 @@ enum kicad_layer {
 enum pad_type {
 	pt_normal,	/* copper and solder mask */
 	pt_bare,	/* only copper (and finish) */
+	pt_trace,	/* only copper, without solder mask opening */
 	pt_paste,	/* only solder paste */
 	pt_mask,	/* only solder mask */
 	pt_n

postscript.c

@@ -1,8 +1,8 @@
 /*
  * postscript.c - Dump objects in Postscript
  *
- * Written 2009, 2010 by Werner Almesberger
+ * Written 2009-2011 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
+ * Copyright 2009-2011 by Werner Almesberger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -64,6 +64,8 @@
 #define	PS_HATCH		mm_to_units(0.1)
 #define	PS_HATCH_LINE		mm_to_units(0.015)
 
+#define	PS_STRIPE		mm_to_units(0.08)
+
 #define	PS_RIM_LINE		mm_to_units(0.02)
 
 #define	PS_FONT_OUTLINE		mm_to_units(0.025)
@@ -223,6 +225,8 @@ static const char *hatch(layer_type layers)
 		return "backhatchpath";
 	case pt_mask:
 		return "dotpath";
+	case pt_trace:
+		return "horpath";
 	default:
 		abort();
 	}
@@ -940,7 +944,7 @@ static void prologue(FILE *file, int pages)
 "/backhatchpath {\n"
 "     gsave flattenpath pathbbox clip newpath\n"
 "    /ury exch def /urx exch def /lly exch def /llx exch def\n"
-"    0 %d ury lly sub urx llx sub add {\n"	/* for 0 to urx-llx_ury-lly */
+"    0 %d ury lly sub urx llx sub add {\n"	/* for 0 to urx-llx+ury-lly */
 "	llx add dup lly moveto\n"
 "	ury lly sub sub ury lineto stroke\n"
 "    } for\n"
@@ -950,6 +954,16 @@ fprintf(file,
 "/crosspath {\n"
 "    gsave hatchpath grestore backhatchpath } def\n");
 
+	fprintf(file,
+"/horpath {\n"
+"     gsave flattenpath pathbbox clip newpath\n"
+"    /ury exch def /urx exch def /lly exch def /llx exch def\n"
+"    lly %d ury {\n"			/* for lly to ury */
+"	dup llx exch moveto\n"
+"	urx exch lineto stroke\n"
+"    } for\n"
+"    grestore newpath } def\n", PS_STRIPE);
+
 	/*
 	 * Stack: font string width height factor -> factor
 	 *