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Revised Inner Outer Inner mode for Classic mode (#4417)

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Ioannis Giannakas 2024-03-18 15:16:12 +00:00 • committed by GitHub
parent 28533dd175
commit b736a0bc38
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2 changed files with 101 additions and 9 deletions
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107
src/libslic3r/PerimeterGenerator.cpp
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@ -453,6 +453,7 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
coll.entities[idx.first] = nullptr;
eloop->make_counter_clockwise();
eloop->inset_idx = loop.depth;
if (loop.is_contour) {
out.append(std::move(children.entities));
out.entities.emplace_back(eloop);
@ -1755,17 +1756,105 @@ void PerimeterGenerator::process_classic()
this->object_config->brim_type == BrimType::btOuterOnly &&
this->object_config->brim_width.value > 0))
entities.reverse();
// SoftFever: sandwich mode
else if (this->config->wall_sequence == WallSequence::InnerOuterInner)
if (entities.entities.size() > 1){
int last_outer=0;
int outer = 0;
for (; outer < entities.entities.size(); ++outer)
if (entities.entities[outer]->role() == erExternalPerimeter && outer - last_outer > 1) {
std::swap(entities.entities[outer], entities.entities[outer - 1]);
last_outer = outer;
// Orca: sandwich mode. Apply after 1st layer.
else if ((this->config->wall_sequence == WallSequence::InnerOuterInner) && layer_id > 0){
entities.reverse(); // reverse all entities - order them from external to internal
if(entities.entities.size()>2){ // 3 walls minimum needed to do inner outer inner ordering
int position = 0; // index to run the re-ordering for multiple external perimeters in a single island.
int arr_i, arr_j = 0; // indexes to run through the walls in the for loops
int outer, first_internal, second_internal, max_internal, current_perimeter; // allocate index values
// Initiate reorder sequence to bring any index 1 (first internal) perimeters ahead of any second internal perimeters
// Leaving these out of order will result in print defects on the external wall as they will be extruded prior to any
// external wall. To do the re-ordering, we are creating two extrusion arrays - reordered_extrusions which will contain
// the reordered extrusions and skipped_extrusions will contain the ones that were skipped in the scan
ExtrusionEntityCollection reordered_extrusions, skipped_extrusions;
bool found_second_internal = false; // helper variable to indicate the start of a new island
for(auto extrusion_to_reorder : entities.entities){ //scan the perimeters to reorder
switch (extrusion_to_reorder->inset_idx) {
case 0: // external perimeter
if(found_second_internal){ //new island - move skipped extrusions to reordered array
for(auto extrusion_skipped : skipped_extrusions)
reordered_extrusions.append(*extrusion_skipped);
skipped_extrusions.clear();
}
reordered_extrusions.append(*extrusion_to_reorder);
break;
case 1: // first internal perimeter
reordered_extrusions.append(*extrusion_to_reorder);
break;
default: // second internal+ perimeter -> put them in the skipped extrusions array
skipped_extrusions.append(*extrusion_to_reorder);
found_second_internal = true;
break;
}
}
if(entities.entities.size()>reordered_extrusions.size()){
// we didnt find any more islands, so lets move the remaining skipped perimeters to the reordered extrusions list.
for(auto extrusion_skipped : skipped_extrusions)
reordered_extrusions.append(*extrusion_skipped);
skipped_extrusions.clear();
}
// Now start the sandwich mode wall re-ordering using the reordered_extrusions as the basis
// scan to find the external perimeter, first internal, second internal and last perimeter in the island.
// We then advance the position index to move to the second "island" and continue until there are no more
// perimeters left.
while (position < reordered_extrusions.size()) {
outer = first_internal = second_internal = current_perimeter = -1; // initialise all index values to -1
max_internal = reordered_extrusions.size()-1; // initialise the maximum internal perimeter to the last perimeter on the extrusion list
// run through the walls to get the index values that need re-ordering until the first one for each
// is found. Start at "position" index to enable the for loop to iterate for multiple external
// perimeters in a single island
for (arr_i = position; arr_i < reordered_extrusions.size(); ++arr_i) {
switch (reordered_extrusions.entities[arr_i]->inset_idx) {
case 0: // external perimeter
if (outer == -1)
outer = arr_i;
break;
case 1: // first internal wall
if (first_internal==-1 && arr_i>outer && outer!=-1){
first_internal = arr_i;
}
break;
case 2: // second internal wall
if (second_internal == -1 && arr_i > first_internal && outer!=-1){
second_internal = arr_i;
}
break;
}
if(outer >-1 && first_internal>-1 && second_internal>-1 && reordered_extrusions.entities[arr_i]->inset_idx == 0){ // found a new external perimeter after we've found all three perimeters to re-order -> this means we entered a new island.
arr_i=arr_i-1; //step back one perimeter
max_internal = arr_i; // new maximum internal perimeter is now this as we have found a new external perimeter, hence a new island.
break; // exit the for loop
}
}
if (outer > -1 && first_internal > -1 && second_internal > -1) { // found perimeters to re-order?
ExtrusionEntityCollection inner_outer_extrusions; // temporary collection to hold extrusions for reordering
for (arr_j = max_internal; arr_j >=position; --arr_j){ // go inside out towards the external perimeter (perimeters in reverse order) and store all internal perimeters until the first one identified with inset index 2
if(arr_j >= second_internal){
inner_outer_extrusions.append(*reordered_extrusions.entities[arr_j]);
current_perimeter++;
}
}
for (arr_j = position; arr_j < second_internal; ++arr_j){ // go outside in and map the remaining perimeters (external and first internal wall(s)) using the outside in wall order
inner_outer_extrusions.append(*reordered_extrusions.entities[arr_j]);
}
for(arr_j = position; arr_j <= max_internal; ++arr_j) // replace perimeter array with the new re-ordered array
entities.replace(arr_j, *inner_outer_extrusions.entities[arr_j-position]);
} else
break;
// go to the next perimeter from the current position to continue scanning for external walls in the same island
position = arr_i + 1;
}
}
}
// append perimeters for this slice as a collection
if (! entities.empty())
this->loops->append(entities);