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ENABLE_ADAPTIVE_LAYER_HEIGHT_PROFILE -> Smoothing algorithm modified to give more weight close to height limits

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This commit is contained in:
Enrico Turri 2019-11-19 14:58:27 +01:00
parent 64830ac827
commit 79d516ca7f
2 changed files with 20 additions and 11 deletions
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27
src/libslic3r/Slicing.cpp
View file

@ -346,8 +346,7 @@ std::vector<coordf_t> layer_height_profile_adaptive(
return layer_height_profile;
}
std::vector<double> smooth_height_profile(const std::vector<double>& profile, const SlicingParameters& slicing_params,
unsigned int radius)
std::vector<double> smooth_height_profile(const std::vector<double>& profile, const SlicingParameters& slicing_params, unsigned int radius)
{
auto gauss_blur = [&slicing_params](const std::vector<double>& profile, unsigned int radius) -> std::vector<double> {
auto gauss_kernel = [] (unsigned int radius) -> std::vector<double> {
@ -390,28 +389,34 @@ std::vector<double> smooth_height_profile(const std::vector<double>& profile, co
}
// smooth the rest of the profile
double max_dz = (double)radius * slicing_params.layer_height;
double med_h = 0.5 * (slicing_params.min_layer_height + slicing_params.max_layer_height);
double half_delta_h = 0.5 * (slicing_params.max_layer_height - slicing_params.min_layer_height);
double inv_half_delta_h = (half_delta_h > 0.0) ? 1.0 / half_delta_h : 1.0;
double max_dz_band = (double)radius * slicing_params.layer_height;
for (size_t i = skip_count; i < size; i += 2)
{
double z = profile[i];
ret.push_back(z);
double zi = profile[i];
ret.push_back(zi);
ret.push_back(0.0);
double& height = ret.back();
int begin = std::max((int)i - two_radius, (int)skip_count);
int end = std::min((int)i + two_radius, (int)size - 2);
double kernel_total = 0.0;
double weight_total = 0.0;
for (int j = begin; j <= end; j += 2)
{
int kernel_id = radius + (j - (int)i) / 2;
double dz = std::abs(z - profile[j]);
if (dz * slicing_params.layer_height <= max_dz)
double dz = std::abs(zi - profile[j]);
if (dz * slicing_params.layer_height <= max_dz_band)
{
height += kernel[kernel_id] * profile[j + 1];
kernel_total += kernel[kernel_id];
double dh = std::abs(profile[j + 1] - med_h);
double weight = kernel[kernel_id] * dh * inv_half_delta_h;
height += weight * profile[j + 1];
weight_total += weight;
}
}
height = clamp(slicing_params.min_layer_height, slicing_params.max_layer_height, (kernel_total != 0.0) ? height /= kernel_total : profile[i + 1]);
height = clamp(slicing_params.min_layer_height, slicing_params.max_layer_height, (weight_total != 0.0) ? height /= weight_total : profile[i + 1]);
}
return ret;

4
src/libslic3r/SlicingAdaptive.cpp
View file

@ -37,6 +37,10 @@ void SlicingAdaptive::prepare()
m_mesh = m_object->raw_mesh();
const ModelInstance* first_instance = m_object->instances.front();
m_mesh.transform(first_instance->get_matrix(), first_instance->is_left_handed());
for (stl_facet& facet : m_mesh.stl.facet_start)
{
facet.normal.normalize();
}
// 1) Collect faces from mesh.
m_faces.reserve(m_mesh.stl.stats.number_of_facets);