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add global mesh transform option

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This commit is contained in:
harrierpigeon
2026-04-10 11:39:08 -05:00
parent 1e9ee0c120
commit 0703728e56
11 changed files with 135 additions and 40 deletions
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src/libslic3r/BeltGCode.cpp
+35
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@@ -56,10 +56,45 @@ void BeltGCode::write_belt_header(GCodeOutputStream &file, const Print &print)
file.write_format("; preslice_remap_x = %s\n", full_cfg.opt_serialize("preslice_remap_x").c_str());
file.write_format("; preslice_remap_y = %s\n", full_cfg.opt_serialize("preslice_remap_y").c_str());
file.write_format("; preslice_remap_z = %s\n", full_cfg.opt_serialize("preslice_remap_z").c_str());
file.write_format("; preslice_remap_global = %d\n", print.config().preslice_remap_global.value ? 1 : 0);
file.write_format("; belt_preslice_global = %d\n", print.config().belt_preslice_global.value ? 1 : 0);
}
void BeltGCode::on_set_origin(const PrintObject *obj, const Point &inst_shift)
{
// Global pre-slice mode: adjust origin using computed correction.
// Transform the origin through the belt pipeline so that
// back_transform(T * origin) = origin (correct machine position).
// This replaces the bbox-based axis snap with an exact formula.
//
// Two flags trigger this path:
// belt_preslice_global — full pipeline (scale * shear * remap) is global
// preslice_remap_global — only the pre-slice remap is global
// The XY origin adjustment uses the FULL forward transform either way,
// because the back_transform applied during G-code emission is always the
// inverse of the full pipeline. When only the remap is configured, both
// flags produce identical math (T == R).
bool use_global = m_config.belt_preslice_global.value
|| (m_config.preslice_remap_global.value
&& BeltTransformPipeline::has_preslice_remap(m_config));
if (use_global && m_config.belt_printer.value) {
auto *belt_writer = dynamic_cast<BeltGCodeWriter*>(m_writer.get());
if (belt_writer) {
// Clear snap — not needed with computed corrections
for (int a = 0; a < 3; ++a)
belt_writer->set_origin_snap(a, false, 0., 0.);
}
// Adjust origin: transform through belt forward pipeline so that
// the back-transform correctly recovers model-space positions.
Transform3d T = BeltTransformPipeline::build_forward_transform(m_config);
Vec2d cur_origin = this->origin();
Vec3d origin3d(cur_origin.x(), cur_origin.y(), 0.);
Vec3d adjusted = T.linear() * origin3d;
this->set_origin(Vec2d(adjusted.x(), adjusted.y()));
return;
}
if (!m_origin_snap[0] && !m_origin_snap[1] && !m_origin_snap[2])
return;