Merge prusa 2.6.1

src/libslic3r/Arrange/Items/ArrangeItem.cpp

@@ -0,0 +1,206 @@
+
+#include "ArrangeItem.hpp"
+
+#include "libslic3r/Arrange/Core/NFP/NFPConcave_Tesselate.hpp"
+
+#include "libslic3r/Arrange/ArrangeImpl.hpp"
+#include "libslic3r/Arrange/Tasks/ArrangeTaskImpl.hpp"
+#include "libslic3r/Arrange/Tasks/FillBedTaskImpl.hpp"
+#include "libslic3r/Arrange/Tasks/MultiplySelectionTaskImpl.hpp"
+
+#include "libslic3r/Geometry/ConvexHull.hpp"
+
+namespace Slic3r { namespace arr2 {
+
+const Polygons &DecomposedShape::transformed_outline() const
+{
+    constexpr auto sc = scaled<double>(1.) * scaled<double>(1.);
+
+    if (!m_transformed_outline_valid) {
+        m_transformed_outline = contours();
+        for (Polygon &poly : m_transformed_outline) {
+            poly.rotate(rotation());
+            poly.translate(translation());
+        }
+
+        m_area = std::accumulate(m_transformed_outline.begin(),
+                                 m_transformed_outline.end(), 0.,
+                                 [sc](double s, const auto &p) {
+                                     return s + p.area() / sc;
+                                 });
+
+        m_convex_hull = Geometry::convex_hull(m_transformed_outline);
+        m_bounding_box = get_extents(m_convex_hull);
+
+        m_transformed_outline_valid = true;
+    }
+
+    return m_transformed_outline;
+}
+
+const Polygon &DecomposedShape::convex_hull() const
+{
+    if (!m_transformed_outline_valid)
+        transformed_outline();
+
+    return m_convex_hull;
+}
+
+const BoundingBox &DecomposedShape::bounding_box() const
+{
+    if (!m_transformed_outline_valid)
+        transformed_outline();
+
+    return m_bounding_box;
+}
+
+const Vec2crd &DecomposedShape::reference_vertex() const
+{
+    if (!m_reference_vertex_valid) {
+        m_reference_vertex = Slic3r::reference_vertex(transformed_outline());
+        m_refs.clear();
+        m_mins.clear();
+        m_refs.reserve(m_transformed_outline.size());
+        m_mins.reserve(m_transformed_outline.size());
+        for (auto &poly : m_transformed_outline) {
+            m_refs.emplace_back(Slic3r::reference_vertex(poly));
+            m_mins.emplace_back(Slic3r::min_vertex(poly));
+        }
+        m_reference_vertex_valid = true;
+    }
+
+    return m_reference_vertex;
+}
+
+const Vec2crd &DecomposedShape::reference_vertex(size_t i) const
+{
+    if (!m_reference_vertex_valid) {
+        reference_vertex();
+    }
+
+    return m_refs[i];
+}
+
+const Vec2crd &DecomposedShape::min_vertex(size_t idx) const
+{
+    if (!m_reference_vertex_valid) {
+        reference_vertex();
+    }
+
+    return m_mins[idx];
+}
+
+Vec2crd DecomposedShape::centroid() const
+{
+    constexpr double area_sc = scaled<double>(1.) * scaled(1.);
+
+    if (!m_centroid_valid) {
+        double total_area = 0.0;
+        Vec2d cntr = Vec2d::Zero();
+
+        for (const Polygon& poly : transformed_outline()) {
+            double parea = poly.area() / area_sc;
+            Vec2d pcntr = unscaled(poly.centroid());
+            total_area += parea;
+            cntr += pcntr * parea;
+        }
+
+        cntr /= total_area;
+        m_centroid = scaled(cntr);
+        m_centroid_valid = true;
+    }
+
+    return m_centroid;
+}
+
+DecomposedShape decompose(const ExPolygons &shape)
+{
+    return DecomposedShape{convex_decomposition_tess(shape)};
+}
+
+DecomposedShape decompose(const Polygon &shape)
+{
+    Polygons convex_shapes;
+
+    bool is_convex = polygon_is_convex(shape);
+    if (is_convex) {
+        convex_shapes.emplace_back(shape);
+    } else {
+        convex_shapes = convex_decomposition_tess(shape);
+    }
+
+    return DecomposedShape{std::move(convex_shapes)};
+}
+
+ArrangeItem::ArrangeItem(const ExPolygons &shape)
+    : m_shape{decompose(shape)}, m_envelope{&m_shape}
+{}
+
+ArrangeItem::ArrangeItem(Polygon shape)
+    : m_shape{decompose(shape)}, m_envelope{&m_shape}
+{}
+
+ArrangeItem::ArrangeItem(const ArrangeItem &other)
+{
+    this->operator= (other);
+}
+
+ArrangeItem::ArrangeItem(ArrangeItem &&other) noexcept
+{
+    this->operator=(std::move(other));
+}
+
+ArrangeItem &ArrangeItem::operator=(const ArrangeItem &other)
+{
+    m_shape = other.m_shape;
+    m_datastore = other.m_datastore;
+    m_bed_idx = other.m_bed_idx;
+    m_priority = other.m_priority;
+
+    if (other.m_envelope.get() == &other.m_shape)
+        m_envelope = &m_shape;
+    else
+        m_envelope = std::make_unique<DecomposedShape>(other.envelope());
+
+    return *this;
+}
+
+void ArrangeItem::set_shape(DecomposedShape shape)
+{
+    m_shape = std::move(shape);
+    m_envelope = &m_shape;
+}
+
+void ArrangeItem::set_envelope(DecomposedShape envelope)
+{
+    m_envelope = std::make_unique<DecomposedShape>(std::move(envelope));
+
+    // Initial synch of transformations of envelope and shape.
+    // They need to be in synch all the time
+    m_envelope->translation(m_shape.translation());
+    m_envelope->rotation(m_shape.rotation());
+}
+
+ArrangeItem &ArrangeItem::operator=(ArrangeItem &&other) noexcept
+{
+    m_shape = std::move(other.m_shape);
+    m_datastore = std::move(other.m_datastore);
+    m_bed_idx = other.m_bed_idx;
+    m_priority = other.m_priority;
+
+    if (other.m_envelope.get() == &other.m_shape)
+        m_envelope = &m_shape;
+    else
+        m_envelope = std::move(other.m_envelope);
+
+    return *this;
+}
+
+template struct ImbueableItemTraits_<ArrangeItem>;
+template class  ArrangeableToItemConverter<ArrangeItem>;
+template struct ArrangeTask<ArrangeItem>;
+template struct FillBedTask<ArrangeItem>;
+template struct MultiplySelectionTask<ArrangeItem>;
+template class  Arranger<ArrangeItem>;
+
+}} // namespace Slic3r::arr2