void combineInfillLayers(SliceMeshStorage& storage,unsigned int amount)
{
if(amount <= 1) //If we must combine 1 layer, nothing needs to be combined. Combining 0 layers is invalid.
{
return;
}
if(storage.layers.empty() || storage.layers.size() - 1 < static_cast<size_t>(storage.getSettingAsCount("top_layers")) || storage.getSettingAsCount("infill_line_distance") <= 0) //No infill is even generated.
{
return;
}
/* We need to round down the layer index we start at to the nearest
divisible index. Otherwise we get some parts that have infill at divisible
layers and some at non-divisible layers. Those layers would then miss each
other. */
size_t min_layer = storage.getSettingAsCount("bottom_layers") + amount - 1;
min_layer -= min_layer % amount; //Round upwards to the nearest layer divisible by infill_sparse_combine.
size_t max_layer = storage.layers.size() - 1 - storage.getSettingAsCount("top_layers");
max_layer -= max_layer % amount; //Round downwards to the nearest layer divisible by infill_sparse_combine.
for(size_t layer_idx = min_layer;layer_idx <= max_layer;layer_idx += amount) //Skip every few layers, but extrude more.
{
SliceLayer* layer = &storage.layers[layer_idx];
for(unsigned int n = 1;n < amount;n++)
{
if(layer_idx < n)
{
break;
}
SliceLayer* layer2 = &storage.layers[layer_idx - n];
for(SliceLayerPart& part : layer->parts)
{
Polygons result;
for(SliceLayerPart& part2 : layer2->parts)
{
if(part.boundaryBox.hit(part2.boundaryBox))
{
Polygons intersection = part.infill_area[n - 1].intersection(part2.infill_area[0]).offset(-200).offset(200);
result.add(intersection);
part.infill_area[n - 1] = part.infill_area[n - 1].difference(intersection);
part2.infill_area[0] = part2.infill_area[0].difference(intersection);
}
}
part.infill_area.push_back(result);
}
}
}
}
void FffPolygonGenerator::processFuzzyWalls(SliceMeshStorage& mesh)
{
if (mesh.getSettingAsCount("wall_line_count") == 0)
{
return;
}
int64_t fuzziness = mesh.getSettingInMicrons("magic_fuzzy_skin_thickness");
int64_t avg_dist_between_points = mesh.getSettingInMicrons("magic_fuzzy_skin_point_dist");
int64_t min_dist_between_points = avg_dist_between_points * 3 / 4; // hardcoded: the point distance may vary between 3/4 and 5/4 the supplied value
int64_t range_random_point_dist = avg_dist_between_points / 2;
for (unsigned int layer_nr = 0; layer_nr < mesh.layers.size(); layer_nr++)
{
SliceLayer& layer = mesh.layers[layer_nr];
for (SliceLayerPart& part : layer.parts)
{
Polygons results;
Polygons& skin = (mesh.getSettingAsSurfaceMode("magic_mesh_surface_mode") == ESurfaceMode::SURFACE)? part.outline : part.insets[0];
for (PolygonRef poly : skin)
{
// generate points in between p0 and p1
PolygonRef result = results.newPoly();
int64_t dist_left_over = rand() % (min_dist_between_points / 2); // the distance to be traversed on the line before making the first new point
Point* p0 = &poly.back();
for (Point& p1 : poly)
{ // 'a' is the (next) new point between p0 and p1
Point p0p1 = p1 - *p0;
int64_t p0p1_size = vSize(p0p1);
int64_t dist_last_point = dist_left_over + p0p1_size * 2; // so that p0p1_size - dist_last_point evaulates to dist_left_over - p0p1_size
for (int64_t p0pa_dist = dist_left_over; p0pa_dist < p0p1_size; p0pa_dist += min_dist_between_points + rand() % range_random_point_dist)
{
int r = rand() % (fuzziness * 2) - fuzziness;
Point perp_to_p0p1 = turn90CCW(p0p1);
Point fuzz = normal(perp_to_p0p1, r);
Point pa = *p0 + normal(p0p1, p0pa_dist) + fuzz;
result.add(pa);
dist_last_point = p0pa_dist;
}
dist_left_over = p0p1_size - dist_last_point;
p0 = &p1;
}
while (result.size() < 3 )
{
unsigned int point_idx = poly.size() - 2;
result.add(poly[point_idx]);
if (point_idx == 0) { break; }
point_idx--;
}
if (result.size() < 3)
{
result.clear();
for (Point& p : poly)
result.add(p);
}
}
skin = results;
}
}
}
void FffPolygonGenerator::processInsets(SliceMeshStorage& mesh, unsigned int layer_nr)
{
SliceLayer* layer = &mesh.layers[layer_nr];
if (mesh.getSettingAsSurfaceMode("magic_mesh_surface_mode") != ESurfaceMode::SURFACE)
{
int inset_count = mesh.getSettingAsCount("wall_line_count");
if (mesh.getSettingBoolean("magic_spiralize") && static_cast<int>(layer_nr) < mesh.getSettingAsCount("bottom_layers") && layer_nr % 2 == 1)//Add extra insets every 2 layers when spiralizing, this makes bottoms of cups watertight.
inset_count += 5;
int line_width_x = mesh.getSettingInMicrons("wall_line_width_x");
int line_width_0 = mesh.getSettingInMicrons("wall_line_width_0");
if (mesh.getSettingBoolean("alternate_extra_perimeter"))
inset_count += layer_nr % 2;
bool recompute_outline_based_on_outer_wall = mesh.getSettingBoolean("support_enable");
WallsComputation walls_computation(mesh.getSettingInMicrons("wall_0_inset"), line_width_0, line_width_x, inset_count, recompute_outline_based_on_outer_wall);
walls_computation.generateInsets(layer);
}
if (mesh.getSettingAsSurfaceMode("magic_mesh_surface_mode") != ESurfaceMode::NORMAL)
{
for (PolygonRef polyline : layer->openPolyLines)
{
Polygons segments;
for (unsigned int point_idx = 1; point_idx < polyline.size(); point_idx++)
{
PolygonRef segment = segments.newPoly();
segment.add(polyline[point_idx-1]);
segment.add(polyline[point_idx]);
}
}
}
}
void FffPolygonGenerator::processSkinsAndInfill(SliceMeshStorage& mesh, unsigned int layer_nr)
{
if (mesh.getSettingAsSurfaceMode("magic_mesh_surface_mode") == ESurfaceMode::SURFACE)
{
return;
}
int wall_line_count = mesh.getSettingAsCount("wall_line_count");
int skin_extrusion_width = mesh.getSettingInMicrons("skin_line_width");
int innermost_wall_extrusion_width = (wall_line_count == 1)? mesh.getSettingInMicrons("wall_line_width_0") : mesh.getSettingInMicrons("wall_line_width_x");
generateSkins(layer_nr, mesh, skin_extrusion_width, mesh.getSettingAsCount("bottom_layers"), mesh.getSettingAsCount("top_layers"), wall_line_count, innermost_wall_extrusion_width, mesh.getSettingAsCount("skin_outline_count"), mesh.getSettingBoolean("skin_no_small_gaps_heuristic"));
if (mesh.getSettingInMicrons("infill_line_distance") > 0)
{
int infill_skin_overlap = 0;
bool infill_is_dense = mesh.getSettingInMicrons("infill_line_distance") < mesh.getSettingInMicrons("infill_line_width") + 10;
if (!infill_is_dense && mesh.getSettingAsFillMethod("infill_pattern") != EFillMethod::CONCENTRIC)
{
infill_skin_overlap = skin_extrusion_width / 2;
}
generateInfill(layer_nr, mesh, innermost_wall_extrusion_width, infill_skin_overlap, wall_line_count);
}
}
SkinInfillAreaComputation::SkinInfillAreaComputation(int layer_nr, const SliceDataStorage& storage, SliceMeshStorage& mesh, bool process_infill)
: layer_nr(layer_nr)
, mesh(mesh)
, bottom_layer_count(mesh.getSettingAsCount("bottom_layers"))
, top_layer_count(mesh.getSettingAsCount("top_layers"))
, wall_line_count(mesh.getSettingAsCount("wall_line_count"))
, skin_line_width(getSkinLineWidth(storage, mesh, layer_nr))
, wall_line_width_0(getWallLineWidth0(storage, mesh, layer_nr))
, wall_line_width_x(getWallLineWidthX(storage, mesh, layer_nr))
, innermost_wall_line_width((wall_line_count == 1) ? wall_line_width_0 : wall_line_width_x)
, infill_skin_overlap(getInfillSkinOverlap(storage, mesh, layer_nr, innermost_wall_line_width))
, skin_inset_count(mesh.getSettingAsCount("skin_outline_count"))
, no_small_gaps_heuristic(mesh.getSettingBoolean("skin_no_small_gaps_heuristic"))
, process_infill(process_infill)
, top_reference_wall_expansion(mesh.getSettingInMicrons("top_skin_preshrink"))
, bottom_reference_wall_expansion(mesh.getSettingInMicrons("bottom_skin_preshrink"))
, top_skin_expand_distance(mesh.getSettingInMicrons("top_skin_expand_distance"))
, bottom_skin_expand_distance(mesh.getSettingInMicrons("bottom_skin_expand_distance"))
, top_reference_wall_idx(getReferenceWallIdx(top_reference_wall_expansion))
, bottom_reference_wall_idx(getReferenceWallIdx(bottom_reference_wall_expansion))
{
}
void combineInfillLayers(SliceMeshStorage& mesh, unsigned int amount)
{
if (mesh.layers.empty() || mesh.layers.size() - 1 < static_cast<size_t>(mesh.getSettingAsCount("top_layers")) || mesh.getSettingAsCount("infill_line_distance") <= 0) //No infill is even generated.
{
return;
}
if(amount <= 1) //If we must combine 1 layer, nothing needs to be combined. Combining 0 layers is invalid.
{
return;
}
/* We need to round down the layer index we start at to the nearest
divisible index. Otherwise we get some parts that have infill at divisible
layers and some at non-divisible layers. Those layers would then miss each
other. */
size_t min_layer = mesh.getSettingAsCount("bottom_layers") + amount - 1;
min_layer -= min_layer % amount; //Round upwards to the nearest layer divisible by infill_sparse_combine.
size_t max_layer = mesh.layers.size() - 1 - mesh.getSettingAsCount("top_layers");
max_layer -= max_layer % amount; //Round downwards to the nearest layer divisible by infill_sparse_combine.
for(size_t layer_idx = min_layer;layer_idx <= max_layer;layer_idx += amount) //Skip every few layers, but extrude more.
{
SliceLayer* layer = &mesh.layers[layer_idx];
for(unsigned int combine_count_here = 1; combine_count_here < amount; combine_count_here++)
{
if(layer_idx < combine_count_here)
{
break;
}
size_t lower_layer_idx = layer_idx - combine_count_here;
if (lower_layer_idx < min_layer)
{
break;
}
SliceLayer* lower_layer = &mesh.layers[lower_layer_idx];
for (SliceLayerPart& part : layer->parts)
{
for (unsigned int density_idx = 0; density_idx < part.infill_area_per_combine_per_density.size(); density_idx++)
{ // go over each density of gradual infill (these density areas overlap!)
std::vector<Polygons>& infill_area_per_combine = part.infill_area_per_combine_per_density[density_idx];
Polygons result;
for (SliceLayerPart& lower_layer_part : lower_layer->parts)
{
if (part.boundaryBox.hit(lower_layer_part.boundaryBox))
{
Polygons intersection = infill_area_per_combine[combine_count_here - 1].intersection(lower_layer_part.infill_area).offset(-200).offset(200);
result.add(intersection); // add area to be thickened
infill_area_per_combine[combine_count_here - 1] = infill_area_per_combine[combine_count_here - 1].difference(intersection); // remove thickened area from less thick layer here
if (density_idx < lower_layer_part.infill_area_per_combine_per_density.size())
{ // only remove from *same density* areas on layer below
// If there are no same density areas, then it's ok to print them anyway
// Don't remove other density areas
unsigned int lower_density_idx = density_idx;
std::vector<Polygons>& lower_infill_area_per_combine = lower_layer_part.infill_area_per_combine_per_density[lower_density_idx];
lower_infill_area_per_combine[0] = lower_infill_area_per_combine[0].difference(intersection); // remove thickened area from lower (thickened) layer
}
}
}
infill_area_per_combine.push_back(result);
}
}
}
}
}
void SkinInfillAreaComputation::generateGradualInfill(SliceMeshStorage& mesh, unsigned int gradual_infill_step_height, unsigned int max_infill_steps)
{
// no early-out for this function; it needs to initialize the [infill_area_per_combine_per_density]
float layer_skip_count = 8; // skip every so many layers as to ignore small gaps in the model making computation more easy
if (!mesh.getSettingBoolean("skin_no_small_gaps_heuristic"))
{
layer_skip_count = 1;
}
unsigned int gradual_infill_step_layer_count = gradual_infill_step_height / mesh.getSettingInMicrons("layer_height"); // The difference in layer count between consecutive density infill areas
// make gradual_infill_step_height divisable by layer_skip_count
float n_skip_steps_per_gradual_step = std::max(1.0f, std::ceil(gradual_infill_step_layer_count / layer_skip_count)); // only decrease layer_skip_count to make it a divisor of gradual_infill_step_layer_count
layer_skip_count = gradual_infill_step_layer_count / n_skip_steps_per_gradual_step;
size_t min_layer = mesh.getSettingAsCount("bottom_layers");
size_t max_layer = mesh.layers.size() - 1 - mesh.getSettingAsCount("top_layers");
for (size_t layer_idx = 0; layer_idx < mesh.layers.size(); layer_idx++)
{ // loop also over layers which don't contain infill cause of bottom_ and top_layer to initialize their infill_area_per_combine_per_density
SliceLayer& layer = mesh.layers[layer_idx];
for (SliceLayerPart& part : layer.parts)
{
assert(part.infill_area_per_combine_per_density.size() == 0 && "infill_area_per_combine_per_density is supposed to be uninitialized");
const Polygons& infill_area = part.getOwnInfillArea();
if (infill_area.size() == 0 || layer_idx < min_layer || layer_idx > max_layer)
{ // initialize infill_area_per_combine_per_density empty
part.infill_area_per_combine_per_density.emplace_back(); // create a new infill_area_per_combine
part.infill_area_per_combine_per_density.back().emplace_back(); // put empty infill area in the newly constructed infill_area_per_combine
// note: no need to copy part.infill_area, cause it's the empty vector anyway
continue;
}
Polygons less_dense_infill = infill_area; // one step less dense with each infill_step
for (unsigned int infill_step = 0; infill_step < max_infill_steps; infill_step++)
{
size_t min_layer = layer_idx + infill_step * gradual_infill_step_layer_count + layer_skip_count;
size_t max_layer = layer_idx + (infill_step + 1) * gradual_infill_step_layer_count;
for (float upper_layer_idx = min_layer; static_cast<unsigned int>(upper_layer_idx) <= max_layer; upper_layer_idx += layer_skip_count)
{
if (static_cast<unsigned int>(upper_layer_idx) >= mesh.layers.size())
{
less_dense_infill.clear();
break;
}
SliceLayer& upper_layer = mesh.layers[static_cast<unsigned int>(upper_layer_idx)];
Polygons relevent_upper_polygons;
for (SliceLayerPart& upper_layer_part : upper_layer.parts)
{
if (!upper_layer_part.boundaryBox.hit(part.boundaryBox))
{
continue;
}
relevent_upper_polygons.add(upper_layer_part.getOwnInfillArea());
}
less_dense_infill = less_dense_infill.intersection(relevent_upper_polygons);
}
if (less_dense_infill.size() == 0)
{
break;
}
// add new infill_area_per_combine for the current density
part.infill_area_per_combine_per_density.emplace_back();
std::vector<Polygons>& infill_area_per_combine_current_density = part.infill_area_per_combine_per_density.back();
const Polygons more_dense_infill = infill_area.difference(less_dense_infill);
infill_area_per_combine_current_density.push_back(more_dense_infill);
if (less_dense_infill.size() == 0)
{
break;
}
}
part.infill_area_per_combine_per_density.emplace_back();
std::vector<Polygons>& infill_area_per_combine_current_density = part.infill_area_per_combine_per_density.back();
infill_area_per_combine_current_density.push_back(infill_area);
part.infill_area_own = nullptr; // clear infill_area_own, it's not needed any more.
assert(part.infill_area_per_combine_per_density.size() != 0 && "infill_area_per_combine_per_density is now initialized");
}
}
}
