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Wipe tower: Wipe less than usual amount of material if the wipe

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is followed by the final sparse zig-zag tower section.
This commit is contained in:
bubnikv
2017-05-30 10:51:38 +02:00
parent 0120f3ed92
commit 2178180a19
5 changed files with 47 additions and 11 deletions
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2
xs/src/libslic3r/GCode/ToolOrdering.cpp
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@@ -244,7 +244,7 @@ void ToolOrdering::fill_wipe_tower_partitions()
//FIXME this is a hack to get the ball rolling.
for (LayerTools &lt : m_layer_tools)
lt.has_wipe_tower = lt.has_object;
lt.has_wipe_tower = lt.has_object && lt.wipe_tower_partitions > 0;
}
} // namespace Slic3r

2
xs/src/libslic3r/GCode/WipeTower.hpp
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@@ -92,7 +92,7 @@ public:
// Returns gcode for toolchange and the end position.
// if new_tool == -1, just unload the current filament over the wipe tower.
virtual ToolChangeResult tool_change(int new_tool, Purpose purpose = PURPOSE_MOVE_TO_TOWER_AND_EXTRUDE) = 0;
virtual ToolChangeResult tool_change(int new_tool, bool last_in_layer, Purpose purpose = PURPOSE_MOVE_TO_TOWER_AND_EXTRUDE) = 0;
// Close the current wipe tower layer with a perimeter and possibly fill the unfilled space with a zig-zag.
// Call this method only if layer_finished() is false.

48
xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp
View File

@@ -340,7 +340,7 @@ WipeTowerPrusaMM::material_type WipeTowerPrusaMM::parse_material(const char *nam
return INVALID;
}
WipeTower::ToolChangeResult WipeTowerPrusaMM::tool_change(int tool, Purpose purpose)
WipeTower::ToolChangeResult WipeTowerPrusaMM::tool_change(int tool, bool last_in_layer, Purpose purpose)
{
// Either it is the last tool unload,
// or there must be a nonzero wipe tower partitions available.
@@ -351,10 +351,47 @@ WipeTower::ToolChangeResult WipeTowerPrusaMM::tool_change(int tool, Purpose purp
return toolchange_Brim(purpose);
}
float wipe_area = m_wipe_area;
if (++ m_idx_tool_change_in_layer < (unsigned int)m_max_color_changes && last_in_layer) {
// This tool_change() call will be followed by a finish_layer() call.
// Try to shrink the wipe_area to save material, as less than usual wipe is required
// if this step is foolowed by finish_layer() extrusions wiping the same extruder.
for (size_t iter = 0; iter < 3; ++ iter) {
// Simulate the finish_layer() extrusions, summ the length of the extrusion.
float e_length = 0.f;
{
unsigned int old_idx_tool_change = m_idx_tool_change_in_layer;
float old_wipe_start_y = m_current_wipe_start_y;
m_current_wipe_start_y += wipe_area;
ToolChangeResult tcr = this->finish_layer(PURPOSE_EXTRUDE);
for (size_t i = 1; i < tcr.extrusions.size(); ++ i) {
const Extrusion &e = tcr.extrusions[i];
if (e.width > 0) {
xy v = e.pos - (&e - 1)->pos;
e_length += sqrt(v.x*v.x+v.y*v.y);
}
}
m_idx_tool_change_in_layer = old_idx_tool_change;
m_current_wipe_start_y = old_wipe_start_y;
}
// Shrink wipe_area by the amount of extrusion extruded by the finish_layer().
// Y stepping of the wipe extrusions.
float dy = m_perimeter_width * 0.8f;
// Number of whole wipe lines, that would be extruded to wipe as much material as the finish_layer().
float num_lines_extruded = floor(e_length / m_wipe_tower_width);
// Minimum wipe area is 5mm wide.
wipe_area -= num_lines_extruded * dy;
if (wipe_area < 5.) {
wipe_area = 5.;
break;
}
}
}
box_coordinates cleaning_box(
m_wipe_tower_pos + xy(0.f, m_current_wipe_start_y + 0.5f * m_perimeter_width),
m_wipe_tower_width,
m_wipe_area - m_perimeter_width);
wipe_area - m_perimeter_width);
PrusaMultiMaterial::Writer writer;
writer.set_extrusion_flow(m_extrusion_flow)
@@ -430,8 +467,7 @@ WipeTower::ToolChangeResult WipeTowerPrusaMM::tool_change(int tool, Purpose purp
"\n\n");
++ m_num_tool_changes;
++ m_idx_tool_change_in_layer;
m_current_wipe_start_y += m_wipe_area;
m_current_wipe_start_y += wipe_area;
}
ToolChangeResult result;
@@ -728,8 +764,8 @@ WipeTower::ToolChangeResult WipeTowerPrusaMM::finish_layer(Purpose purpose)
// Slow down on the 1st layer.
float speed_factor = m_is_first_layer ? 0.5f : 1.f;
box_coordinates fill_box(m_wipe_tower_pos + xy(0.f, float(m_idx_tool_change_in_layer) * m_wipe_area),
m_wipe_tower_width, float(m_max_color_changes - m_idx_tool_change_in_layer) * m_wipe_area);
box_coordinates fill_box(m_wipe_tower_pos + xy(0.f, m_current_wipe_start_y),
m_wipe_tower_width, float(m_max_color_changes) * m_wipe_area - m_current_wipe_start_y);
fill_box.expand(0.f, - 0.5f * m_perimeter_width);
{
float firstLayerOffset = 0.f;

2
xs/src/libslic3r/GCode/WipeTowerPrusaMM.hpp
View File

@@ -117,7 +117,7 @@ public:
// Returns gcode for a toolchange and a final print head position.
// On the first layer, extrude a brim around the future wipe tower first.
virtual ToolChangeResult tool_change(int new_tool, Purpose purpose);
virtual ToolChangeResult tool_change(int new_tool, bool last_in_layer, Purpose purpose);
// Close the current wipe tower layer with a perimeter and possibly fill the unfilled space with a zig-zag.
// Call this method only if layer_finished() is false.