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#ifndef SUPPORTTREEMESHER_HPP
#define SUPPORTTREEMESHER_HPP
#include "libslic3r/Point.hpp"
#include "libslic3r/SLA/SupportTreeBuilder.hpp"
#include "libslic3r/SLA/Contour3D.hpp"
namespace Slic3r { namespace sla {
using Portion = std::tuple<double, double>;
inline Portion make_portion(double a, double b)
{
return std::make_tuple(a, b);
}
Contour3D sphere(double rho,
Portion portion = make_portion(0., 2. * PI),
double fa = (2. * PI / 360.));
// Down facing cylinder in Z direction with arguments:
// r: radius
// h: Height
// ssteps: how many edges will create the base circle
// sp: starting point
Contour3D cylinder(double r,
double h,
size_t steps = 45,
const Vec3d &sp = Vec3d::Zero());
Contour3D pinhead(double r_pin, double r_back, double length, size_t steps = 45);
Contour3D halfcone(double baseheight,
double r_bottom,
double r_top,
const Vec3d &pt = Vec3d::Zero(),
size_t steps = 45);
inline Contour3D get_mesh(const Head &h, size_t steps)
{
Contour3D mesh = pinhead(h.r_pin_mm, h.r_back_mm, h.width_mm, steps);
for(auto& p : mesh.points) p.z() -= (h.fullwidth() - h.r_back_mm);
using Quaternion = Eigen::Quaternion<double>;
// We rotate the head to the specified direction. The head's pointing
// side is facing upwards so this means that it would hold a support
// point with a normal pointing straight down. This is the reason of
// the -1 z coordinate
auto quatern = Quaternion::FromTwoVectors(Vec3d{0, 0, -1}, h.dir);
for(auto& p : mesh.points) p = quatern * p + h.pos;
return mesh;
}
inline Contour3D get_mesh(const Pillar &p, size_t steps)
{
if(p.height > EPSILON) { // Endpoint is below the starting point
// We just create a bridge geometry with the pillar parameters and
// move the data.
return cylinder(p.r, p.height, steps, p.endpoint());
}
return {};
}
inline Contour3D get_mesh(const Pedestal &p, size_t steps)
{
return halfcone(p.height, p.r_bottom, p.r_top, p.pos, steps);
}
inline Contour3D get_mesh(const Junction &j, size_t steps)
{
Contour3D mesh = sphere(j.r, make_portion(0, PI), 2 *PI / steps);
for(auto& p : mesh.points) p += j.pos;
return mesh;
}
inline Contour3D get_mesh(const Bridge &br, size_t steps)
{
using Quaternion = Eigen::Quaternion<double>;
Vec3d v = (br.endp - br.startp);
Vec3d dir = v.normalized();
double d = v.norm();
Contour3D mesh = cylinder(br.r, d, steps);
auto quater = Quaternion::FromTwoVectors(Vec3d{0,0,1}, dir);
for(auto& p : mesh.points) p = quater * p + br.startp;
return mesh;
}
inline Contour3D get_mesh(const DiffBridge &br, size_t steps)
{
double h = br.get_length();
Contour3D mesh = halfcone(h, br.r, br.end_r, Vec3d::Zero(), steps);
using Quaternion = Eigen::Quaternion<double>;
// We rotate the head to the specified direction. The head's pointing
// side is facing upwards so this means that it would hold a support
// point with a normal pointing straight down. This is the reason of
// the -1 z coordinate
auto quatern = Quaternion::FromTwoVectors(Vec3d{0, 0, 1}, br.get_dir());
for(auto& p : mesh.points) p = quatern * p + br.startp;
return mesh;
}
}} // namespace Slic3r::sla
#endif // SUPPORTTREEMESHER_HPP
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