diff options
Diffstat (limited to 'lib/stitch_plan/stop.py')
| -rw-r--r-- | lib/stitch_plan/stop.py | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/lib/stitch_plan/stop.py b/lib/stitch_plan/stop.py deleted file mode 100644 index 0ccaeaf8..00000000 --- a/lib/stitch_plan/stop.py +++ /dev/null @@ -1,88 +0,0 @@ -from copy import copy - -from ..svg import PIXELS_PER_MM - - -def process_stop(stitch_plan): - """Handle the "stop after" checkbox. - - The user wants the machine to pause after this patch. This can - be useful for applique and similar on multi-needle machines that - normally would not stop between colors. - - In most machine embroidery file formats, there's no such thing as - an actual "STOP" instruction. All that exists is a "color change" - command. - - On multi-needle machines, the user assigns needles to the colors in - the design before starting stitching. C01, C02, etc are the normal - needles, but C00 is special. For a block of stitches assigned - to C00, the machine will continue sewing with the last color it - had and pause after it completes the C00 block. Machines that don't - call it C00 still have a similar concept. - - We'll add a STOP instruction at the end of this color block. - Unfortunately, we have a bit of a catch-22: the user needs to set - C00 (or equivalent) for the _start_ of this block to get the - machine to stop at the end of this block. That means it will use - the previous color, which isn't the right color at all! - - For the first STOP in a given thread color, we'll need to - introduce an extra color change. The user can then set the correct - color for the first section and C00 for the second, resulting in - a stop where we want it. - - We'll try to find a logical place to split the color block, like - a TRIM or a really long stitch. Failing that, we'll just split - it in half. - """ - - color_block = stitch_plan.last_color_block - - if not color_block or len(color_block) < 2: - return - - last_stitch = color_block.last_stitch - color_block.add_stitch(stop=True) - - if len(stitch_plan) > 1: - # if this isn't the first stop in this color, then we're done - if stitch_plan.color_blocks[-2].stop_after and \ - stitch_plan.color_blocks[-2].color == color_block.color: - return - - # We need to split this color block. Pick the last TRIM or - # the last long stitch (probably between distant patches). - - for i in xrange(len(color_block) - 2, -1, -1): - stitch = color_block.stitches[i] - - if stitch.trim: - # ignore the trim right before the stop we just added - if i < len(color_block) - 2: - # split after the trim - i = i + 1 - break - - if i > 0: - next_stitch = color_block.stitches[i + 1] - - if (stitch - next_stitch).length() > 20 * PIXELS_PER_MM: - break - - if i == 0: - # Darn, we didn't find a TRIM or long stitch. Just chop the - # block in half. - i = len(color_block) / 2 - - new_color_block = color_block.split_at(i) - - # If we're splitting in the middle of a run of stitches, we don't - # want a gap to appear in the preview and the PDF printout, so - # add an extra stitch to bridge the gap. Technically this will - # result in a double needle penetration but it's no big deal. - if not color_block.last_stitch.trim: - color_block.add_stitch(copy(new_color_block.stitches[0])) - - color_block.add_stitch(color_change=True, fake_color_change=True) - stitch_plan.add_color_block(new_color_block) |
