Re: gEDA-user: Adding extra layer
der Mouse schrieb: Anyway, memory is cheap. Only for mainstream mass-market hardware. Of course, that may be all gEDA cares about If we lose users in order to save 1 K, or even 1 Meg of RAM, that doesn't make sense. Depends. To what extent is more users an overriding good? In this particular case, I think the conclusion is correct. I just don't like the reasoning being advanced here. (I would even more prefer to see max-layers settable at startup time, but I daresay that would be a substantially more intrusive change.) For the majority of users memory is cheap. If there are more users that want more layers than there are users that don't have enough memory, the limit should be increased. This will minimize the number of users that have to change the #define and recompile. It should be noted in the documentation where to change it and that it's a number-of-layers vs. memory usage tradeoff, so those that don't have memory (and those that want even more layers) know what to do. I suggest to increase the number to 32 for a start. Philipp ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Linux's answer to SolidWorks
Kai-Martin Knaak wrote: I took a serious look at it before I settled for varicad. . . . This is a bit like ALGOL ALGOL is a dubious choice for new projects. Has anyone tried Open Cascade? It's free and somewhat open, but it seems all the developers are in a for profit company -- maybe it hasn't got a life of its own like my favorite free-open tools. John Griessen ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: PCB Bug: poly clearance around rotated pads.
Do you two want some more time to play with this, or should I commit
now and worry later?
Here's an updated version of my patch which fixes the square pad and
damaged polygon issues.
Robert
Index: src/polygon.c
===
RCS file: /cvsroot/pcb/pcb/src/polygon.c,v
retrieving revision 1.59
diff -u -r1.59 polygon.c
--- src/polygon.c 2 Dec 2007 09:35:40 - 1.59
+++ src/polygon.c 6 Sep 2008 16:59:11 -
@@ -451,6 +451,82 @@
return np;
}
+/* make a rounded-corner rectangle */
+POLYAREA *
+SquarePadPoly (PadType * pad, BDimension clear)
+{
+ PLINE *contour = NULL;
+ POLYAREA *np = NULL;
+ Vector v;
+ double d;
+ double tx, ty;
+ double cx, cy;
+ PadType _t=*pad,*t=_t;
+ PadType _c=*pad,*c=_c;
+ int halfthick = (pad-Thickness + 1) / 2;
+ int halfclear = (clear + 1) / 2;
+
+ d =
+sqrt (SQUARE (pad-Point1.X - pad-Point2.X) +
+ SQUARE (pad-Point1.Y - pad-Point2.Y));
+ if (d != 0)
+{
+ double a = halfthick / d;
+ tx = (t-Point1.Y - t-Point2.Y) * a;
+ ty = (t-Point2.X - t-Point1.X) * a;
+ a = halfclear / d;
+ cx = (c-Point1.Y - c-Point2.Y) * a;
+ cy = (c-Point2.X - c-Point1.X) * a;
+
+ t-Point1.X -= ty;
+ t-Point1.Y += tx;
+ t-Point2.X += ty;
+ t-Point2.Y -= tx;
+ c-Point1.X -= cy;
+ c-Point1.Y += cx;
+ c-Point2.X += cy;
+ c-Point2.Y -= cx;
+}
+ else
+{
+ tx = halfthick;
+ ty = 0;
+ cx = halfclear;
+ cy = 0;
+
+ t-Point1.Y += tx;
+ t-Point2.Y -= tx;
+ c-Point1.Y += cx;
+ c-Point2.Y -= cx;
+}
+
+ v[0] = c-Point1.X - tx;
+ v[1] = c-Point1.Y - ty;
+ if ((contour = poly_NewContour (v)) == NULL)
+return 0;
+ frac_circle (contour, (t-Point1.X - tx), (t-Point1.Y - ty), v, 4);
+
+ v[0] = t-Point2.X - cx;
+ v[1] = t-Point2.Y - cy;
+ poly_InclVertex (contour-head.prev, poly_CreateNode (v));
+ frac_circle (contour, (t-Point2.X - tx), (t-Point2.Y - ty), v, 4);
+
+ v[0] = c-Point2.X + tx;
+ v[1] = c-Point2.Y + ty;
+ poly_InclVertex (contour-head.prev, poly_CreateNode (v));
+ frac_circle (contour, (t-Point2.X + tx), (t-Point2.Y + ty), v, 4);
+
+ v[0] = t-Point1.X + cx;
+ v[1] = t-Point1.Y + cy;
+ poly_InclVertex (contour-head.prev, poly_CreateNode (v));
+ frac_circle (contour, (t-Point1.X + tx), (t-Point1.Y + ty), v, 4);
+
+ /* now we have the line contour */
+ if (!(np = ContourToPoly (contour)))
+return NULL;
+ return np;
+}
+
/* clear np1 from the polygon */
static int
Subtract (POLYAREA * np1, PolygonType * p, Boolean fnp)
@@ -583,13 +659,8 @@
if (TEST_FLAG (SQUAREFLAG, pad))
{
- BDimension t = pad-Thickness / 2;
- LocationType x1, x2, y1, y2;
- x1 = MIN (pad-Point1.X, pad-Point2.X) - t;
- x2 = MAX (pad-Point1.X, pad-Point2.X) + t;
- y1 = MIN (pad-Point1.Y, pad-Point2.Y) - t;
- y2 = MAX (pad-Point1.Y, pad-Point2.Y) + t;
- if (!(np = RoundRect (x1, x2, y1, y2, pad-Clearance / 2)))
+ if (!
+ (np = SquarePadPoly (pad, pad-Thickness + pad-Clearance)))
return -1;
}
else
@@ -846,14 +917,20 @@
UnsubtractPad (PadType * pad, LayerType * l, PolygonType * p)
{
POLYAREA *np = NULL;
- BDimension t = (pad-Thickness + pad-Clearance) / 2 + 100;
- LocationType x1, x2, y1, y2;
- x1 = MIN (pad-Point1.X, pad-Point2.X) - t;
- x2 = MAX (pad-Point1.X, pad-Point2.X) + t;
- y1 = MIN (pad-Point1.Y, pad-Point2.Y) - t;
- y2 = MAX (pad-Point1.Y, pad-Point2.Y) + t;
- if (!(np = RectPoly (x1, x2, y1, y2)))
+ if (TEST_FLAG (SQUAREFLAG, pad))
+{
+ if (!
+ (np = SquarePadPoly (pad, pad-Thickness + pad-Clearance + 100)))
+return 0;
+}
+ else
+{
+ if (!
+ (np = LinePoly ((LineType *) pad, pad-Thickness + pad-Clearance +
100)))
+return 0;
+}
+ if (!np)
return 0;
if (!Unsubtract (np, p))
return 0;
___
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gEDA-user: pcb question: matching differential lines
Greetings to everyone here. I'm working on a new board and I have a couple differential lines in my design. Is there anyway in pcb to measure the length of the traces and see how different they are? I'd like to have them match up as close as possible instead of just eyeballing it. -- Jean ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: free-open workarounds similar to SolidWorks
evan foss wrote: Open cascade is just free as in beer. The license is really not what you would think. OK then. I looked at the GCAM program site without installing it yet. Seems to have a 3D wireframe view of hand made macros done via GUI to create sets of RS-274 G codes. The G code macros it will make are about cutting simple circle or rectangle shapes, then outputting a series of moves that will cut a global depth of cut setting and repeat while necessary. I did not see anything generating spline curves yet. I cannot find any import export function yet. So far, Blender --python scripts to create G codes -- GCAM setup details added to G codes -- machining job shop is the most reasonable flow I have found to make real parts with. It might be possible to go from blender -- STL --??-- IGES, but I've not found how yet. GCAM checked G codes are farther along than an IGES file, so your charges at the machine shop would be less with them. Whether GCAM would show in 3D a set of G codes that follow a spline curved surface from Blender is an interesting question to answer... ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: free-open workarounds similar to SolidWorks
Hey John, I spoke to a local vocational high school's drafting department who couldn't wait to get their hands on this project. I gave them the measurements of my backrest and they are running with this. It gives their students a chance to work on a real project, to help the disabled and to use the more advanced features of their software. I couldn't beat the pice since it's free! Plus this frees me up to work on the code for my temp control chip. Thanks for digging into this and if you continue to explore this I'd be interested to know what you find out. Rob On Sat, Sep 6, 2008 at 3:24 PM, John Griessen [EMAIL PROTECTED] wrote: evan foss wrote: Open cascade is just free as in beer. The license is really not what you would think. OK then. I looked at the GCAM program site without installing it yet. Seems to have a 3D wireframe view of hand made macros done via GUI to create sets of RS-274 G codes. The G code macros it will make are about cutting simple circle or rectangle shapes, then outputting a series of moves that will cut a global depth of cut setting and repeat while necessary. I did not see anything generating spline curves yet. I cannot find any import export function yet. So far, Blender --python scripts to create G codes -- GCAM setup details added to G codes -- machining job shop is the most reasonable flow I have found to make real parts with. It might be possible to go from blender -- STL --??-- IGES, but I've not found how yet. GCAM checked G codes are farther along than an IGES file, so your charges at the machine shop would be less with them. Whether GCAM would show in 3D a set of G codes that follow a spline curved surface from Blender is an interesting question to answer... ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: pcb question: matching differential lines
On Saturday 06 September 2008 18:17:14 jean,,, wrote: Greetings to everyone here. I'm working on a new board and I have a couple differential lines in my design. Is there anyway in pcb to measure the length of the traces and see how different they are? I'd like to have them match up as close as possible instead of just eyeballing it. Yes -- on an upcoming project I'm going to need to make some equal-distance RF waveguides, and having a feature like this would be a great help with that! Peter -- Peter Brett Electronic Systems Engineer Integral Informatics Ltd signature.asc Description: This is a digitally signed message part. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
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