diff options
| -rw-r--r-- | twisted_coil_gen_twolayer.py | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/twisted_coil_gen_twolayer.py b/twisted_coil_gen_twolayer.py index a4bb653..d84b4db 100644 --- a/twisted_coil_gen_twolayer.py +++ b/twisted_coil_gen_twolayer.py @@ -196,16 +196,20 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d print(f'Clipping via diameter from {via_diameter:.2f} mm to trace width of {trace_width:.2f} mm.', file=sys.stderr) via_diameter = trace_width + if via_offset is None: + via_offset = max(0, (via_diameter-trace_width)/2) + print(f'Autocalculated via offset {via_offset:.2f} mm', file=sys.stderr) + inner_via_ring_radius = inner_radius - via_offset - print(f'{inner_radius=} {via_offset=} {via_diameter=}', file=sys.stderr) + #print(f'{inner_radius=} {via_offset=} {via_diameter=}', file=sys.stderr) inner_via_angle = 2*asin((via_diameter + clearance)/2 / inner_via_ring_radius) outer_via_ring_radius = outer_radius + via_offset outer_via_angle = 2*asin((via_diameter + clearance)/2 / outer_via_ring_radius) - print(f'Inner via ring @ {inner_via_ring_radius:.2f} mm (from {inner_radius:.2f} mm)', file=sys.stderr) + print(f'Inner via ring @r={inner_via_ring_radius:.2f} mm (from {inner_radius:.2f} mm)', file=sys.stderr) print(f' {degrees(inner_via_angle):.1f} deg / via', file=sys.stderr) - print(f'Outer via ring @ {outer_via_ring_radius:.2f} mm (from {outer_radius:.2f} mm)', file=sys.stderr) + print(f'Outer via ring @r={outer_via_ring_radius:.2f} mm (from {outer_radius:.2f} mm)', file=sys.stderr) print(f' {degrees(outer_via_angle):.1f} deg / via', file=sys.stderr) if inner_via_angle*twists > 2*pi: @@ -319,6 +323,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d xn, yn = x0, y0 points = [(x0, y0)] + dists = [] for i in range(fn+1): r, g, b, _a = mpl.cm.plasma(start_frac + (end_frac - start_frac)/fn * (i + 0.5)) path = SVGPath(fill='none', stroke=f'#{round(r*255):02x}{round(g*255):02x}{round(b*255):02x}', stroke_width=trace_width, stroke_linejoin='round', stroke_linecap='round') @@ -330,6 +335,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d path.move(xp, yp) path.line(xn, yn) points.append((xn, yn)) + dists.append(dist((xp, yp), (xn, yn))) #lines.append(make_line(xp, yp, xn, yn, layer_pair[layer])) arcs.extend(arc_approximate(points, layer_pair[layer], arc_tolerance)) @@ -341,11 +347,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d text_anchor='middle', style=f'font: 1px bold sans-serif; fill: {rainbow[layer%len(rainbow)]}')) - return (x0, y0), (xn, yn) - - if via_offset is None: - via_offset = max(0, (via_diameter-trace_width)/2) - print(f'Autocalculated {via_offset=}', file=sys.stderr) + return (x0, y0), (xn, yn), sum(dists) sector_angle = 2*pi / twists total_angle = twists*2*sweeping_angle @@ -362,7 +364,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d end_angle = fold_angle + sweeping_angle x = inverse[i]*floor(2*sweeping_angle / (2*pi)) * 2*pi - (x0, y0), (xn, yn) = do_spiral(0, outer_radius, inner_radius, start_angle, fold_angle, (x + start_angle)/total_angle, (x + fold_angle)/total_angle) + (x0, y0), (xn, yn), clen = do_spiral(0, outer_radius, inner_radius, start_angle, fold_angle, (x + start_angle)/total_angle, (x + fold_angle)/total_angle) do_spiral(1, inner_radius, outer_radius, fold_angle, end_angle, (x + fold_angle)/total_angle, (x + end_angle)/total_angle) xv, yv = inner_via_ring_radius*cos(fold_angle), inner_via_ring_radius*sin(fold_angle) @@ -382,6 +384,8 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d svg_vias.append(Tag('circle', cx=xv, cy=yv, r=via_diameter/2, stroke='none', fill='white')) svg_vias.append(Tag('circle', cx=xv, cy=yv, r=via_drill/2, stroke='none', fill='black')) + print(f'Approximate track length: {clen*twists*2:.2f} mm') + pads.append(make_pad(1, [layer_pair[0]], outer_radius, 0)) pads.append(make_pad(2, [layer_pair[1]], outer_radius, 0)) |