juli/OrcaSlicer
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Add belt printer transform pipeline: slicing rotation, G-code coords, preview

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- Implement core belt slicing pipeline: R(-alpha, X) mesh rotation in PrintObjectSlice with corrected object height calculation for proper layer count
Add to_machine_coords() in GCodeWriter to convert slicing-frame coordinates back to machine-frame, propagated through GCode,
GCodeProcessor, and GCodeViewer
Add belt-mode UI: tilted bed visualization, slicing-direction arrow, and raw G-code toggle to switch between machine-frame and slicing-frame views

This is a combination of 6 commits.

checkpoint 1: initial MVP.  Slicing functions, but rotates instead of skews are happening and a lot of other stuff too

getting somewhere, getting to the point where I need to figure out how to verify this stuff

this appears to be a dead end.

getting somewhere I think maybe

I'm pretty sure we've completely lost the plot at this point and need to restart this process...

remove slice logic in preparation for new, more invasive plan
This commit is contained in:
harrierpigeon
2026-04-09 23:07:06 -05:00
parent a7441c7f48
commit c808653565
22 changed files with 375 additions and 31 deletions
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src/libslic3r/GCode.cpp
+8 -1
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@@ -2413,6 +2413,10 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
m_writer.set_is_bbl_machine(is_bbl_printers);
// Belt printer: initialize coordinate transformation on the writer.
if (print.config().belt_printer.value)
m_writer.set_belt_angle(print.config().belt_printer_angle.value);
// How many times will be change_layer() called?
// change_layer() in turn increments the progress bar status.
m_layer_count = 0;
@@ -2502,6 +2506,9 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
file.write_format("; HEADER_BLOCK_START\n");
// Write information on the generator.
file.write_format("; generated by %s on %s\n", Slic3r::header_slic3r_generated().c_str(), Slic3r::Utils::local_timestamp().c_str());
// Belt printer: embed angle in header for G-code processor detection.
if (print.config().belt_printer.value)
file.write_format("; belt_printer_angle = %.1f\n", print.config().belt_printer_angle.value);
if (is_bbl_printers)
file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Estimated_Printing_Time_Placeholder).c_str());
//BBS: total layer number
@@ -6758,7 +6765,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
}
// BBS: use G1 if not enable arc fitting or has no arc fitting result or in spiral_mode mode or we are doing sloped extrusion
// Attention: G2 and G3 is not supported in spiral_mode mode
if (!m_config.enable_arc_fitting || path.polyline.fitting_result.empty() || m_config.spiral_mode || sloped != nullptr) {
if (!m_config.enable_arc_fitting || path.polyline.fitting_result.empty() || m_config.spiral_mode || sloped != nullptr || m_config.belt_printer) {
double path_length = 0.;
double total_length = sloped == nullptr ? 0. : path.polyline.length() * SCALING_FACTOR;
for (const Line& line : path.polyline.lines()) {