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Improved handling of excessive extrusion width values (too small

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or too big).
Fixes std: bad_alloc #2715
This commit is contained in:
bubnikv 2019-08-06 15:11:46 +02:00
parent 29d9c65ee2
commit 74e592ceaa
4 changed files with 60 additions and 10 deletions
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20
src/libslic3r/Flow.cpp
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@ -76,10 +76,14 @@ float Flow::spacing() const
return this->width + BRIDGE_EXTRA_SPACING;
// rectangle with semicircles at the ends
float min_flow_spacing = this->width - this->height * (1. - 0.25 * PI);
return this->width - PERIMETER_LINE_OVERLAP_FACTOR * (this->width - min_flow_spacing);
float res = this->width - PERIMETER_LINE_OVERLAP_FACTOR * (this->width - min_flow_spacing);
#else
return float(this->bridge ? (this->width + BRIDGE_EXTRA_SPACING) : (this->width - this->height * (1. - 0.25 * PI)));
float res = float(this->bridge ? (this->width + BRIDGE_EXTRA_SPACING) : (this->width - this->height * (1. - 0.25 * PI)));
#endif
// assert(res > 0.f);
if (res <= 0.f)
throw std::runtime_error("Flow::spacing() produced negative spacing. Did you set some extrusion width too small?");
return res;
}
// This method returns the centerline spacing between an extrusion using this
@ -89,20 +93,26 @@ float Flow::spacing(const Flow &other) const
{
assert(this->height == other.height);
assert(this->bridge == other.bridge);
return float(this->bridge ?
float res = float(this->bridge ?
0.5 * this->width + 0.5 * other.width + BRIDGE_EXTRA_SPACING :
0.5 * this->spacing() + 0.5 * other.spacing());
// assert(res > 0.f);
if (res <= 0.f)
throw std::runtime_error("Flow::spacing() produced negative spacing. Did you set some extrusion width too small?");
return res;
}
// This method returns extrusion volume per head move unit.
double Flow::mm3_per_mm() const
{
double res = this->bridge ?
float res = this->bridge ?
// Area of a circle with dmr of this->width.
(this->width * this->width) * 0.25 * PI :
// Rectangle with semicircles at the ends. ~ h (w - 0.215 h)
this->height * (this->width - this->height * (1. - 0.25 * PI));
assert(res > 0.);
//assert(res > 0.);
if (res <= 0.)
throw std::runtime_error("Flow::mm3_per_mm() produced negative flow. Did you set some extrusion width too small?");
return res;
}