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@sgk
Created Nov 17, 2010
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//
// Export the EAGLE cream layers to DXF for the Craft-ROBO cutting plotter.
//
// Copyright (c) 2010 Switch Science, Inc.
//
// Type "run cream-dxf" in the board editor window.
// Options:
// -o Add one more line segment for pads to make sure the cut.
// -c Cut off corners of pads. The resulting pads are octagons.
//
// Configuration
real SHRINK_WIDTH = 0.15; // unit: mm
real MIN_CORNERRADIUS = 0.05; // unit: mm
// Flags
int CORNERCUT = 0; // boolean
int OVERCUT = 0; // boolean
string HEADER =
" 0\n"
"SECTION\n"
" 2\n"
"HEADER\n"
" 9\n"
"$ACADVER\n"
" 1\n"
"AC1013\n"
" 9\n"
"$MEASUREMENT\n"
" 70\n"
" 1\n" // unit: mm
" 0\n"
"ENDSEC\n"
" 0\n"
"SECTION\n"
" 2\n"
"ENTITIES\n";
string POLYLINE =
" 0\n"
"LWPOLYLINE\n"
" 8\n"
"0\n" // layer
" 62\n"
"7\n" // color
" 90\n"
"%d\n" // number of points
" 70\n"
"%d\n"; // 0=open 1=close
string POLYLINE_POINT =
" 10\n"
"%f\n"
" 20\n"
"%f\n";
string LINE =
" 0\n"
"LINE\n"
" 8\n"
"0\n" // layer
" 10\n"
"%f\n" // start x
" 20\n"
"%f\n" // start y
" 11\n"
"%f\n" // end x
" 21\n"
"%f\n"; // end y
string ARC =
" 0\n"
"ARC\n"
" 8\n"
"0\n" // layer
" 10\n"
"%f\n" // center x
" 20\n"
"%f\n" // center y
" 40\n"
"%f\n" // radius
" 50\n"
"%f\n" // start angle
" 51"
"%f\n"; // end angle
string CIRCLE =
" 0\n"
"CIRCLE\n"
" 8\n"
"0\n" // layer
" 10\n"
"%f\n" // center x
" 20\n"
"%f\n" // center y
" 40\n"
"%f\n"; // radius
string TRAILER =
" 0\n"
"ENDSEC\n"
" 0\n"
"EOF\n";
int
processLayer(UL_BOARD B, int layer) {
int count = 0;
int cream = (layer == LAYER_TOP ? LAYER_TCREAM : LAYER_BCREAM);
printf("%s", HEADER);
B.elements(E) {
E.package.contacts(C) {
if (C.smd && C.smd.layer == layer) {
real x = C.smd.x / 10000.0;
real y = C.smd.y / 10000.0;
real w = C.smd.dx[cream] / 10000.0 / 2 - SHRINK_WIDTH;
real h = C.smd.dy[cream] / 10000.0 / 2 - SHRINK_WIDTH;
real a = C.smd.angle / 180 * PI;
real wc = w * cos(a);
real hs = h * sin(a);
real ws = w * sin(a);
real hc = h * cos(a);
real r = max(min(w, h) * C.smd.roundness / 100, MIN_CORNERRADIUS);
if (CORNERCUT && h > r && w > r) {
real rc = r * cos(a);
real rs = r * sin(a);
if (OVERCUT) {
printf(POLYLINE, 10, 0); // 10 points, open polyline
printf(POLYLINE_POINT, x + wc, y + ws); // (w, 0)
printf(POLYLINE_POINT, x + wc - hs + rs, y + ws + hc - rc); // (w, h-r)
printf(POLYLINE_POINT, x + wc - rc - hs, y + ws - rs + hc); // (w-r, h)
printf(POLYLINE_POINT, x - wc + rc - hs, y - ws + rs + hc); // (-w+r, h)
printf(POLYLINE_POINT, x - wc - hs + rs, y - ws + hc - rc); // (-w, h-r)
printf(POLYLINE_POINT, x - wc + hs - rs, y - ws - hc + rc); // (-w, -h+r)
printf(POLYLINE_POINT, x - wc + rc + hs, y - ws + rs - hc); // (-w+r, -h)
printf(POLYLINE_POINT, x + wc - rc + hs, y + ws - rs - hc); // (w-r, -h)
printf(POLYLINE_POINT, x + wc + hs - rs, y + ws - hc + rc); // (w, -h+r)
printf(POLYLINE_POINT, x + wc - hs + rs, y + ws + hc - rc); // (w, h-r)
} else {
printf(POLYLINE, 9, 1); // 9 points, close polyline
printf(POLYLINE_POINT, x + wc, y + ws); // (w, 0)
printf(POLYLINE_POINT, x + wc - hs + rs, y + ws + hc - rc); // (w, h-r)
printf(POLYLINE_POINT, x + wc - rc - hs, y + ws - rs + hc); // (w-r, h)
printf(POLYLINE_POINT, x - wc + rc - hs, y - ws + rs + hc); // (-w+r, h)
printf(POLYLINE_POINT, x - wc - hs + rs, y - ws + hc - rc); // (-w, h-r)
printf(POLYLINE_POINT, x - wc + hs - rs, y - ws - hc + rc); // (-w, -h+r)
printf(POLYLINE_POINT, x - wc + rc + hs, y - ws + rs - hc); // (-w+r, -h)
printf(POLYLINE_POINT, x + wc - rc + hs, y + ws - rs - hc); // (w-r, -h)
printf(POLYLINE_POINT, x + wc + hs - rs, y + ws - hc + rc); // (w, -h+r)
}
} else {
if (OVERCUT) {
printf(POLYLINE, 6, 0); // 6 points, open polyline
printf(POLYLINE_POINT, x + wc, y + ws); // ( w, 0)
printf(POLYLINE_POINT, x + wc - hs, y + ws + hc); // ( w, h)
printf(POLYLINE_POINT, x - wc - hs, y - ws + hc); // (-w, h)
printf(POLYLINE_POINT, x - wc + hs, y - ws - hc); // (-w, -h)
printf(POLYLINE_POINT, x + wc + hs, y + ws - hc); // ( w, -h)
printf(POLYLINE_POINT, x + wc - hs, y + ws + hc); // ( w, h)
} else {
printf(POLYLINE, 5, 1); // 5 points, close polyline
printf(POLYLINE_POINT, x + wc, y + ws); // ( w, 0)
printf(POLYLINE_POINT, x + wc - hs, y + ws + hc); // ( w, h)
printf(POLYLINE_POINT, x - wc - hs, y - ws + hc); // (-w, h)
printf(POLYLINE_POINT, x - wc + hs, y - ws - hc); // (-w, -h)
printf(POLYLINE_POINT, x + wc + hs, y + ws - hc); // ( w, -h)
}
}
count++;
}
}
}
printf("%s", TRAILER);
return count;
}
for (int i = 1; i < argc; i++) {
if (argv[i] == "-c")
CORNERCUT = 1;
else
if (argv[i] == "-o")
OVERCUT = 1;
}
board(B) {
int t, b;
output(filesetext(B.name, "-tcream.dxf")) t = processLayer(B, LAYER_TOP);
output(filesetext(B.name, "-bcream.dxf")) b = processLayer(B, LAYER_BOTTOM);
string message;
sprintf(message, ";DXF files generated with %d+%d objects", t, b);
dlgMessageBox(message);
}
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