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#ifndef SLA_RASTERBASE_HPP
#define SLA_RASTERBASE_HPP
#include <ostream>
#include <memory>
#include <vector>
#include <array>
#include <utility>
#include <cstdint>
#include <libslic3r/ExPolygon.hpp>
#include <libslic3r/SLA/Concurrency.hpp>
namespace ClipperLib { struct Polygon; }
namespace Slic3r {
template<class T> using uqptr = std::unique_ptr<T>;
template<class T> using shptr = std::shared_ptr<T>;
template<class T> using wkptr = std::weak_ptr<T>;
namespace sla {
// Raw byte buffer paired with its size. Suitable for compressed image data.
class EncodedRaster {
protected:
std::vector<uint8_t> m_buffer;
std::string m_ext;
public:
EncodedRaster() = default;
explicit EncodedRaster(std::vector<uint8_t> &&buf, std::string ext)
: m_buffer(std::move(buf)), m_ext(std::move(ext))
{}
size_t size() const { return m_buffer.size(); }
const void * data() const { return m_buffer.data(); }
const char * extension() const { return m_ext.c_str(); }
};
using RasterEncoder =
std::function<EncodedRaster(const void *ptr, size_t w, size_t h, size_t num_components)>;
class RasterBase {
public:
enum Orientation { roLandscape, roPortrait };
using TMirroring = std::array<bool, 2>;
static const TMirroring NoMirror;
static const TMirroring MirrorX;
static const TMirroring MirrorY;
static const TMirroring MirrorXY;
struct Trafo {
bool mirror_x = false, mirror_y = false, flipXY = false;
coord_t center_x = 0, center_y = 0;
// Portrait orientation will make sure the drawed polygons are rotated
// by 90 degrees.
Trafo(Orientation o = roLandscape, const TMirroring &mirror = NoMirror)
// XY flipping implicitly does an X mirror
: mirror_x(o == roPortrait ? !mirror[0] : mirror[0])
, mirror_y(!mirror[1]) // Makes raster origin to be top left corner
, flipXY(o == roPortrait)
{}
TMirroring get_mirror() const { return { (roPortrait ? !mirror_x : mirror_x), mirror_y}; }
Orientation get_orientation() const { return flipXY ? roPortrait : roLandscape; }
Point get_center() const { return {center_x, center_y}; }
};
/// Type that represents a resolution in pixels.
struct Resolution {
size_t width_px = 0;
size_t height_px = 0;
Resolution(size_t w = 0, size_t h = 0) : width_px(w), height_px(h) {}
size_t pixels() const { return width_px * height_px; }
};
/// Types that represents the dimension of a pixel in millimeters.
struct PixelDim {
double w_mm = 0.;
double h_mm = 0.;
PixelDim(double px_width_mm = 0.0, double px_height_mm = 0.0)
: w_mm(px_width_mm), h_mm(px_height_mm)
{}
};
virtual ~RasterBase() = default;
/// Draw a polygon with holes.
virtual void draw(const ExPolygon& poly) = 0;
virtual void draw(const ClipperLib::Polygon& poly) = 0;
/// Get the resolution of the raster.
virtual Resolution resolution() const = 0;
virtual PixelDim pixel_dimensions() const = 0;
virtual Trafo trafo() const = 0;
virtual EncodedRaster encode(RasterEncoder encoder) const = 0;
};
struct PNGRasterEncoder {
EncodedRaster operator()(const void *ptr, size_t w, size_t h, size_t num_components);
};
struct PPMRasterEncoder {
EncodedRaster operator()(const void *ptr, size_t w, size_t h, size_t num_components);
};
std::ostream& operator<<(std::ostream &stream, const EncodedRaster &bytes);
// If gamma is zero, thresholding will be performed which disables AA.
uqptr<RasterBase> create_raster_grayscale_aa(
const RasterBase::Resolution &res,
const RasterBase::PixelDim & pxdim,
double gamma = 1.0,
const RasterBase::Trafo & tr = {});
}} // namespace Slic3r::sla
#endif // SLARASTERBASE_HPP
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