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New FDM support sparse infill zig-zag algorithm.

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Fixed some old support and infill issues.

Fixes support problem #4295
Fixes Parts of interface layer extends beyond supports and cannot be printed
Fixes support missing under horizontal overhang #6058
Fixes Slicer double-traces small sections of Rectilinear Supports, causes
Fixes plastic buildup and nozzle crashes #4951
Fixes Add "Angle Interface layers" #2969
This commit is contained in:
Vojtech Bubnik 2021-04-08 15:29:40 +02:00
parent 0db55a0699
commit 8fd731f7a0
18 changed files with 1473 additions and 285 deletions
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23
src/libslic3r/Geometry.hpp
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@ -299,20 +299,23 @@ bool liang_barsky_line_clipping(
// Ugly named variant, that accepts the squared line
// Don't call me with a nearly zero length vector!
// sympy:
// factor(solve([a * x + b * y + c, x**2 + y**2 - r**2], [x, y])[0])
// factor(solve([a * x + b * y + c, x**2 + y**2 - r**2], [x, y])[1])
template<typename T>
int ray_circle_intersections_r2_lv2_c(T r2, T a, T b, T lv2, T c, std::pair<Eigen::Matrix<T, 2, 1, Eigen::DontAlign>, Eigen::Matrix<T, 2, 1, Eigen::DontAlign>> &out)
{
T x0 = - a * c / lv2;
T y0 = - b * c / lv2;
T d = r2 - c * c / lv2;
if (d < T(0))
T x0 = - a * c;
T y0 = - b * c;
T d2 = r2 * lv2 - c * c;
if (d2 < T(0))
return 0;
T mult = sqrt(d / lv2);
out.first.x() = x0 + b * mult;
out.first.y() = y0 - a * mult;
out.second.x() = x0 - b * mult;
out.second.y() = y0 + a * mult;
return mult == T(0) ? 1 : 2;
T d = sqrt(d2);
out.first.x() = (x0 + b * d) / lv2;
out.first.y() = (y0 - a * d) / lv2;
out.second.x() = (x0 - b * d) / lv2;
out.second.y() = (y0 + a * d) / lv2;
return d == T(0) ? 1 : 2;
}
template<typename T>
int ray_circle_intersections(T r, T a, T b, T c, std::pair<Eigen::Matrix<T, 2, 1, Eigen::DontAlign>, Eigen::Matrix<T, 2, 1, Eigen::DontAlign>> &out)