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Fix of the wipe tower starting point

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see issues #2968, #3234 and #3248
This commit is contained in:
Lukas Matena 2019-12-04 13:40:16 +01:00
parent 3ef34848c7
commit 4ba7cb7ede
3 changed files with 28 additions and 17 deletions
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33
src/libslic3r/GCode.cpp
View file

@ -427,39 +427,44 @@ std::string WipeTowerIntegration::post_process_wipe_tower_moves(const WipeTower:
Vec2f pos = tcr.start_pos;
Vec2f transformed_pos = pos;
Vec2f old_pos(-1000.1f, -1000.1f);
std::string never_skip_tag = WipeTower::never_skip_tag();
while (gcode_str) {
std::getline(gcode_str, line); // we read the gcode line by line
// All G1 commands should be translated and rotated
// All G1 commands should be translated and rotated. X and Y coords are
// only pushed to the output when they differ from last time.
// WT generator can override this by appending the never_skip_tag
if (line.find("G1 ") == 0) {
bool never_skip = false;
auto it = line.find(never_skip_tag);
if (it != std::string::npos) {
// remove the tag and remember we saw it
never_skip = true;
line.erase(it, it+never_skip_tag.size());
}
std::ostringstream line_out;
std::istringstream line_str(line);
line_str >> std::noskipws; // don't skip whitespace
char ch = 0;
while (line_str >> ch) {
if (ch == 'X')
line_str >> pos.x();
if (ch == 'X' || ch =='Y')
line_str >> (ch == 'X' ? pos.x() : pos.y());
else
if (ch == 'Y')
line_str >> pos.y();
else
line_out << ch;
line_out << ch;
}
transformed_pos = pos;
transformed_pos = Eigen::Rotation2Df(angle) * transformed_pos;
transformed_pos += translation;
transformed_pos = Eigen::Rotation2Df(angle) * pos + translation;
if (transformed_pos != old_pos) {
if (transformed_pos != old_pos || never_skip) {
line = line_out.str();
std::ostringstream oss;
oss << std::fixed << std::setprecision(3) << "G1 ";
if (transformed_pos.x() != old_pos.x())
if (transformed_pos.x() != old_pos.x() || never_skip)
oss << " X" << transformed_pos.x() - extruder_offset.x();
if (transformed_pos.y() != old_pos.y())
if (transformed_pos.y() != old_pos.y() || never_skip)
oss << " Y" << transformed_pos.y() - extruder_offset.y();
oss << " ";
line.replace(line.find("G1 "), 3, oss.str());
old_pos = transformed_pos;
}

7
src/libslic3r/GCode/WipeTower.cpp
View file

@ -1004,9 +1004,10 @@ void WipeTower::toolchange_Change(
writer.append("[toolchange_gcode]\n");
// Travel to where we assume we are. Custom toolchange or some special T code handling (parking extruder etc)
// gcode could have left the extruder somewhere, we cannot just start extruding.
Vec2f current_pos = writer.pos_rotated();
writer.append(std::string("G1 X") + std::to_string(current_pos.x()) + " Y" + std::to_string(current_pos.y()) + "\n");
// gcode could have left the extruder somewhere, we cannot just start extruding. We should also inform the
// postprocessor that we absolutely want to have this in the gcode, even if it thought it is the same as before.
Vec2f current_pos = writer.pos_rotated();
writer.append(std::string("G1 X") + std::to_string(current_pos.x()) + " Y" + std::to_string(current_pos.y()) + never_skip_tag() + "\n");
// The toolchange Tn command will be inserted later, only in case that the user does
// not provide a custom toolchange gcode.

5
src/libslic3r/GCode/WipeTower.hpp
View file

@ -17,9 +17,12 @@ class PrintConfig;
enum GCodeFlavor : unsigned char;
class WipeTower
{
public:
static char const* never_skip_tag() { return "_GCODE_WIPE_TOWER_NEVER_SKIP_TAG"; }
struct Extrusion
{
Extrusion(const Vec2f &pos, float width, unsigned int tool) : pos(pos), width(width), tool(tool) {}
@ -96,6 +99,8 @@ public:
// Switch to a next layer.
void set_layer(
// Print height of this layer.