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086f11df98
is_left_handed() method on transformations and volumes rendering of GLVolumes in left handed coordinate systems by glFrontFace(GL_CW); SLA slicing on left hand oriented instances by flipping the mesh for SLAPrintObject in X. rendering of the SLA cutting plane in left handed systems resetting the SLA clipping planes on 3D preview invalidation
483 lines
18 KiB
C++
483 lines
18 KiB
C++
#ifndef slic3r_SLAPrint_hpp_
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#define slic3r_SLAPrint_hpp_
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#include <mutex>
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#include "PrintBase.hpp"
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#include "PrintExport.hpp"
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#include "Point.hpp"
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#include "MTUtils.hpp"
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#include <libnest2d/backends/clipper/clipper_polygon.hpp>
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#include "Zipper.hpp"
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namespace Slic3r {
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enum SLAPrintStep : unsigned int {
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slapsMergeSlicesAndEval,
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slapsRasterize,
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slapsCount
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};
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enum SLAPrintObjectStep : unsigned int {
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slaposObjectSlice,
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slaposSupportPoints,
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slaposSupportTree,
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slaposBasePool,
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slaposSliceSupports,
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slaposCount
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};
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class SLAPrint;
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class GLCanvas;
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using _SLAPrintObjectBase =
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PrintObjectBaseWithState<SLAPrint, SLAPrintObjectStep, slaposCount>;
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// Layers according to quantized height levels. This will be consumed by
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// the printer (rasterizer) in the SLAPrint class.
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// using coord_t = long long;
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enum SliceOrigin { soSupport, soModel };
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class SLAPrintObject : public _SLAPrintObjectBase
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{
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private: // Prevents erroneous use by other classes.
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using Inherited = _SLAPrintObjectBase;
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public:
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// I refuse to grantee copying (Tamas)
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SLAPrintObject(const SLAPrintObject&) = delete;
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SLAPrintObject& operator=(const SLAPrintObject&) = delete;
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const SLAPrintObjectConfig& config() const { return m_config; }
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const Transform3d& trafo() const { return m_trafo; }
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bool is_left_handed() const { return m_left_handed; }
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struct Instance {
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Instance(ModelID instance_id, const Point &shift, float rotation) : instance_id(instance_id), shift(shift), rotation(rotation) {}
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bool operator==(const Instance &rhs) const { return this->instance_id == rhs.instance_id && this->shift == rhs.shift && this->rotation == rhs.rotation; }
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// ID of the corresponding ModelInstance.
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ModelID instance_id;
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// Slic3r::Point objects in scaled G-code coordinates
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Point shift;
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// Rotation along the Z axis, in radians.
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float rotation;
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};
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const std::vector<Instance>& instances() const { return m_instances; }
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bool has_mesh(SLAPrintObjectStep step) const;
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TriangleMesh get_mesh(SLAPrintObjectStep step) const;
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// Get a support mesh centered around origin in XY, and with zero rotation around Z applied.
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// Support mesh is only valid if this->is_step_done(slaposSupportTree) is true.
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const TriangleMesh& support_mesh() const;
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// Get a pad mesh centered around origin in XY, and with zero rotation around Z applied.
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// Support mesh is only valid if this->is_step_done(slaposBasePool) is true.
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const TriangleMesh& pad_mesh() const;
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// This will return the transformed mesh which is cached
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const TriangleMesh& transformed_mesh() const;
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std::vector<sla::SupportPoint> transformed_support_points() const;
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// Get the needed Z elevation for the model geometry if supports should be
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// displayed. This Z offset should also be applied to the support
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// geometries. Note that this is not the same as the value stored in config
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// as the pad height also needs to be considered.
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double get_elevation() const;
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// This method returns the needed elevation according to the processing
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// status. If the supports are not ready, it is zero, if they are and the
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// pad is not, then without the pad, otherwise the full value is returned.
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double get_current_elevation() const;
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// This method returns the support points of this SLAPrintObject.
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const std::vector<sla::SupportPoint>& get_support_points() const;
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// The public Slice record structure. It corresponds to one printable layer.
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class SliceRecord {
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public:
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// this will be the max limit of size_t
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static const size_t NONE = size_t(-1);
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static const SliceRecord EMPTY;
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private:
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coord_t m_print_z = 0; // Top of the layer
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float m_slice_z = 0.f; // Exact level of the slice
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float m_height = 0.f; // Height of the sliced layer
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size_t m_model_slices_idx = NONE;
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size_t m_support_slices_idx = NONE;
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const SLAPrintObject *m_po = nullptr;
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public:
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SliceRecord(coord_t key, float slicez, float height):
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m_print_z(key), m_slice_z(slicez), m_height(height) {}
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// The key will be the integer height level of the top of the layer.
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coord_t print_level() const { return m_print_z; }
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// Returns the exact floating point Z coordinate of the slice
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float slice_level() const { return m_slice_z; }
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// Returns the current layer height
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float layer_height() const { return m_height; }
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bool is_valid() const { return ! std::isnan(m_slice_z); }
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const SLAPrintObject* print_obj() const { assert(m_po); return m_po; }
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// Methods for setting the indices into the slice vectors.
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void set_model_slice_idx(const SLAPrintObject &po, size_t id) {
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m_po = &po; m_model_slices_idx = id;
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}
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void set_support_slice_idx(const SLAPrintObject& po, size_t id) {
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m_po = &po; m_support_slices_idx = id;
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}
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const ExPolygons& get_slice(SliceOrigin o) const;
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};
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private:
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template <class T> inline static T level(const SliceRecord& sr) {
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static_assert(std::is_arithmetic<T>::value, "Arithmetic only!");
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return std::is_integral<T>::value ? T(sr.print_level()) : T(sr.slice_level());
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}
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template <class T> inline static SliceRecord create_slice_record(T val) {
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static_assert(std::is_arithmetic<T>::value, "Arithmetic only!");
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return std::is_integral<T>::value ? SliceRecord{ coord_t(val), 0.f, 0.f } : SliceRecord{ 0, float(val), 0.f };
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}
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// This is a template method for searching the slice index either by
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// an integer key: print_level or a floating point key: slice_level.
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// The eps parameter gives the max deviation in + or - direction.
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//
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// This method can be used in const or non-const contexts as well.
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template<class Container, class T>
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static auto closest_slice_record(
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Container& cont,
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T lvl,
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T eps = std::numeric_limits<T>::max()) -> decltype (cont.begin())
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{
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if(cont.empty()) return cont.end();
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if(cont.size() == 1 && std::abs(level<T>(cont.front()) - lvl) > eps)
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return cont.end();
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SliceRecord query = create_slice_record(lvl);
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auto it = std::lower_bound(cont.begin(), cont.end(), query,
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[](const SliceRecord& r1,
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const SliceRecord& r2)
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{
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return level<T>(r1) < level<T>(r2);
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});
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T diff = std::abs(level<T>(*it) - lvl);
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if(it != cont.begin()) {
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auto it_prev = std::prev(it);
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T diff_prev = std::abs(level<T>(*it_prev) - lvl);
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if(diff_prev < diff) { diff = diff_prev; it = it_prev; }
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}
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if(diff > eps) it = cont.end();
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return it;
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}
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const std::vector<ExPolygons>& get_model_slices() const { return m_model_slices; }
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const std::vector<ExPolygons>& get_support_slices() const;
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public:
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// /////////////////////////////////////////////////////////////////////////
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//
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// These methods should be callable on the client side (e.g. UI thread)
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// when the appropriate steps slaposObjectSlice and slaposSliceSupports
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// are ready. All the print objects are processed before slapsRasterize so
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// it is safe to call them during and/or after slapsRasterize.
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//
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// /////////////////////////////////////////////////////////////////////////
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// Retrieve the slice index.
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const std::vector<SliceRecord>& get_slice_index() const {
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return m_slice_index;
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}
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// Search slice index for the closest slice to given print_level.
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// max_epsilon gives the allowable deviation of the returned slice record's
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// level.
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const SliceRecord& closest_slice_to_print_level(
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coord_t print_level,
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coord_t max_epsilon = std::numeric_limits<coord_t>::max()) const
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{
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auto it = closest_slice_record(m_slice_index, print_level, max_epsilon);
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return it == m_slice_index.end() ? SliceRecord::EMPTY : *it;
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}
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// Search slice index for the closest slice to given slice_level.
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// max_epsilon gives the allowable deviation of the returned slice record's
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// level. Use SliceRecord::is_valid() to check the result.
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const SliceRecord& closest_slice_to_slice_level(
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float slice_level,
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float max_epsilon = std::numeric_limits<float>::max()) const
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{
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auto it = closest_slice_record(m_slice_index, slice_level, max_epsilon);
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return it == m_slice_index.end() ? SliceRecord::EMPTY : *it;
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}
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protected:
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// to be called from SLAPrint only.
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friend class SLAPrint;
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SLAPrintObject(SLAPrint* print, ModelObject* model_object);
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~SLAPrintObject();
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void config_apply(const ConfigBase &other, bool ignore_nonexistent = false) { this->m_config.apply(other, ignore_nonexistent); }
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void config_apply_only(const ConfigBase &other, const t_config_option_keys &keys, bool ignore_nonexistent = false)
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{ this->m_config.apply_only(other, keys, ignore_nonexistent); }
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void set_trafo(const Transform3d& trafo, bool left_handed) {
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m_transformed_rmesh.invalidate([this, &trafo, left_handed](){ m_trafo = trafo; m_left_handed = left_handed; });
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}
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void set_instances(const std::vector<Instance> &instances) { m_instances = instances; }
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// Invalidates the step, and its depending steps in SLAPrintObject and SLAPrint.
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bool invalidate_step(SLAPrintObjectStep step);
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bool invalidate_all_steps();
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// Invalidate steps based on a set of parameters changed.
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bool invalidate_state_by_config_options(const std::vector<t_config_option_key> &opt_keys);
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// Which steps have to be performed. Implicitly: all
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// to be accessible from SLAPrint
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std::vector<bool> m_stepmask;
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private:
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// Object specific configuration, pulled from the configuration layer.
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SLAPrintObjectConfig m_config;
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// Translation in Z + Rotation by Y and Z + Scaling / Mirroring.
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Transform3d m_trafo = Transform3d::Identity();
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// m_trafo is left handed -> 3x3 affine transformation has negative determinant.
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bool m_left_handed = false;
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std::vector<Instance> m_instances;
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// Individual 2d slice polygons from lower z to higher z levels
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std::vector<ExPolygons> m_model_slices;
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// Exact (float) height levels mapped to the slices. Each record contains
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// the index to the model and the support slice vectors.
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std::vector<SliceRecord> m_slice_index;
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std::vector<float> m_model_height_levels;
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// Caching the transformed (m_trafo) raw mesh of the object
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mutable CachedObject<TriangleMesh> m_transformed_rmesh;
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class SupportData;
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std::unique_ptr<SupportData> m_supportdata;
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};
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using PrintObjects = std::vector<SLAPrintObject*>;
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using SliceRecord = SLAPrintObject::SliceRecord;
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class TriangleMesh;
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struct SLAPrintStatistics
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{
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SLAPrintStatistics() { clear(); }
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std::string estimated_print_time;
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double objects_used_material;
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double support_used_material;
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size_t slow_layers_count;
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size_t fast_layers_count;
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double total_cost;
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double total_weight;
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// Config with the filled in print statistics.
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DynamicConfig config() const;
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// Config with the statistics keys populated with placeholder strings.
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static DynamicConfig placeholders();
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// Replace the print statistics placeholders in the path.
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std::string finalize_output_path(const std::string &path_in) const;
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void clear() {
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estimated_print_time.clear();
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objects_used_material = 0.;
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support_used_material = 0.;
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slow_layers_count = 0;
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fast_layers_count = 0;
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total_cost = 0.;
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total_weight = 0.;
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}
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};
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struct SLAminzZipper {};
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// The implementation of creating zipped archives with wxWidgets
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template<> class LayerWriter<SLAminzZipper> {
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Zipper m_zip;
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public:
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LayerWriter(const std::string& zipfile_path): m_zip(zipfile_path) {}
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void next_entry(const std::string& fname) { m_zip.add_entry(fname); }
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void binary_entry(const std::string& fname,
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const std::uint8_t* buf,
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size_t l)
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{
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m_zip.add_entry(fname, buf, l);
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}
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std::string get_name() const {
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return m_zip.get_name();
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}
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template<class T> inline LayerWriter& operator<<(T&& arg) {
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m_zip << std::forward<T>(arg); return *this;
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}
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bool is_ok() const {
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return true; // m_zip blows up if something goes wrong...
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}
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// After finalize, no writing to the archive will have an effect. The only
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// valid operation is to dispose the object calling the destructor which
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// should close the file. This method can throw and signal potential errors
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// when flushing the archive. This is why its present.
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void finalize() { m_zip.finalize(); }
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};
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/**
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* @brief This class is the high level FSM for the SLA printing process.
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*
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* It should support the background processing framework and contain the
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* metadata for the support geometries and their slicing. It should also
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* dispatch the SLA printing configuration values to the appropriate calculation
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* steps.
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*/
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class SLAPrint : public PrintBaseWithState<SLAPrintStep, slapsCount>
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{
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private: // Prevents erroneous use by other classes.
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typedef PrintBaseWithState<SLAPrintStep, slapsCount> Inherited;
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public:
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SLAPrint(): m_stepmask(slapsCount, true) {}
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virtual ~SLAPrint() override { this->clear(); }
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PrinterTechnology technology() const noexcept override { return ptSLA; }
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void clear() override;
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bool empty() const override { return m_objects.empty(); }
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ApplyStatus apply(const Model &model, const DynamicPrintConfig &config) override;
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void set_task(const TaskParams ¶ms) override;
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void process() override;
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void finalize() override;
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// Returns true if an object step is done on all objects and there's at least one object.
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bool is_step_done(SLAPrintObjectStep step) const;
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// Returns true if the last step was finished with success.
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bool finished() const override { return this->is_step_done(slaposSliceSupports) && this->Inherited::is_step_done(slapsRasterize); }
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template<class Fmt = SLAminzZipper>
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void export_raster(const std::string& fname) {
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if(m_printer) m_printer->save<Fmt>(fname);
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}
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const PrintObjects& objects() const { return m_objects; }
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const SLAPrintConfig& print_config() const { return m_print_config; }
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const SLAPrinterConfig& printer_config() const { return m_printer_config; }
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const SLAMaterialConfig& material_config() const { return m_material_config; }
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const SLAPrintObjectConfig& default_object_config() const { return m_default_object_config; }
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std::string output_filename() const override;
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const SLAPrintStatistics& print_statistics() const { return m_print_statistics; }
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std::string validate() const override;
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// An aggregation of SliceRecord-s from all the print objects for each
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// occupied layer. Slice record levels dont have to match exactly.
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// They are unified if the level difference is within +/- SCALED_EPSILON
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class PrintLayer {
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coord_t m_level;
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// The collection of slice records for the current level.
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std::vector<std::reference_wrapper<const SliceRecord>> m_slices;
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std::vector<ClipperLib::Polygon> m_transformed_slices;
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template<class Container> void transformed_slices(Container&& c) {
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m_transformed_slices = std::forward<Container>(c);
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}
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friend void SLAPrint::process();
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public:
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explicit PrintLayer(coord_t lvl) : m_level(lvl) {}
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// for being sorted in their container (see m_printer_input)
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bool operator<(const PrintLayer& other) const {
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return m_level < other.m_level;
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}
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void add(const SliceRecord& sr) { m_slices.emplace_back(sr); }
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coord_t level() const { return m_level; }
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auto slices() const -> const decltype (m_slices)& { return m_slices; }
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const std::vector<ClipperLib::Polygon> & transformed_slices() const {
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return m_transformed_slices;
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}
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};
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// The aggregated and leveled print records from various objects.
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// TODO: use this structure for the preview in the future.
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const std::vector<PrintLayer>& print_layers() const { return m_printer_input; }
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private:
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using SLAPrinter = FilePrinter<FilePrinterFormat::SLA_PNGZIP>;
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using SLAPrinterPtr = std::unique_ptr<SLAPrinter>;
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// Implement same logic as in SLAPrintObject
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bool invalidate_step(SLAPrintStep st);
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// Invalidate steps based on a set of parameters changed.
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bool invalidate_state_by_config_options(const std::vector<t_config_option_key> &opt_keys);
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SLAPrintConfig m_print_config;
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SLAPrinterConfig m_printer_config;
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SLAMaterialConfig m_material_config;
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SLAPrintObjectConfig m_default_object_config;
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PrintObjects m_objects;
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std::vector<bool> m_stepmask;
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// Ready-made data for rasterization.
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std::vector<PrintLayer> m_printer_input;
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// The printer itself
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SLAPrinterPtr m_printer;
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// Estimated print time, material consumed.
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SLAPrintStatistics m_print_statistics;
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friend SLAPrintObject;
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};
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} // namespace Slic3r
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#endif /* slic3r_SLAPrint_hpp_ */
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