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ENABLE_ADAPTIVE_LAYER_HEIGHT_PROFILE -> Added 'keep min' option to smoothing algorithm

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This commit is contained in:
Enrico Turri 2019-11-20 14:06:30 +01:00
parent 955439b3ba
commit aea32ffe72
5 changed files with 48 additions and 28 deletions
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26
src/libslic3r/Slicing.cpp
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@ -346,9 +346,9 @@ 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, const HeightProfileSmoothingParams& smoothing_params)
{
auto gauss_blur = [&slicing_params](const std::vector<double>& profile, unsigned int radius) -> std::vector<double> {
auto gauss_blur = [&slicing_params](const std::vector<double>& profile, const HeightProfileSmoothingParams& smoothing_params) -> std::vector<double> {
auto gauss_kernel = [] (unsigned int radius) -> std::vector<double> {
unsigned int size = 2 * radius + 1;
std::vector<double> ret;
@ -374,7 +374,8 @@ std::vector<double> smooth_height_profile(const std::vector<double>& profile, co
// not enough data to smmoth
if ((int)profile.size() - (int)skip_count < 6)
return profile;
unsigned int radius = std::max(smoothing_params.radius, (unsigned int)1);
std::vector<double> kernel = gauss_kernel(radius);
int two_radius = 2 * (int)radius;
@ -388,15 +389,16 @@ std::vector<double> smooth_height_profile(const std::vector<double>& profile, co
ret.push_back(profile[i]);
}
// smooth the rest of the profile
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;
// smooth the rest of the profile by biasing a gaussian blur
// the bias moves the smoothed profile closer to the min_layer_height
double delta_h = slicing_params.max_layer_height - slicing_params.min_layer_height;
double inv_delta_h = (delta_h != 0.0) ? 1.0 / 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 zi = profile[i];
double hi = profile[i + 1];
ret.push_back(zi);
ret.push_back(0.0);
double& height = ret.back();
@ -409,20 +411,22 @@ std::vector<double> smooth_height_profile(const std::vector<double>& profile, co
double dz = std::abs(zi - profile[j]);
if (dz * slicing_params.layer_height <= max_dz_band)
{
double dh = std::abs(profile[j + 1] - med_h);
double weight = kernel[kernel_id] * dh * inv_half_delta_h;
double dh = std::abs(slicing_params.max_layer_height - profile[j + 1]);
double weight = kernel[kernel_id] * sqrt(dh * inv_delta_h);
height += weight * profile[j + 1];
weight_total += weight;
}
}
height = clamp(slicing_params.min_layer_height, slicing_params.max_layer_height, (weight_total != 0.0) ? height /= weight_total : profile[i + 1]);
height = clamp(slicing_params.min_layer_height, slicing_params.max_layer_height, (weight_total != 0.0) ? height /= weight_total : hi);
if (smoothing_params.keep_min)
height = std::min(height, hi);
}
return ret;
};
return gauss_blur(profile, std::max(radius, (unsigned int)1));
return gauss_blur(profile, smoothing_params);
}
void adjust_layer_height_profile(