3D-printing/OrcaSlicer
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Limit the object movement to the vincinity of the print bed.

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This commit is contained in:
bubnikv 2017-06-08 11:02:29 +02:00
parent dabcff1c07
commit 8b5f7f0fb2
8 changed files with 142 additions and 25 deletions
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38
xs/src/libslic3r/Polygon.cpp
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@ -293,6 +293,44 @@ Polygon::convex_points(double angle) const
return points;
}
// Projection of a point onto the polygon.
Point Polygon::point_projection(const Point &point) const
{
Point proj = point;
double dmin = std::numeric_limits<double>::max();
if (! this->points.empty()) {
for (size_t i = 0; i < this->points.size(); ++ i) {
const Point &pt0 = this->points[i];
const Point &pt1 = this->points[(i + 1 == this->points.size()) ? 0 : i + 1];
double d = pt0.distance_to(point);
if (d < dmin) {
dmin = d;
proj = pt0;
}
d = pt1.distance_to(point);
if (d < dmin) {
dmin = d;
proj = pt1;
}
Pointf v1(coordf_t(pt1.x - pt0.x), coordf_t(pt1.y - pt0.y));
coordf_t div = dot(v1);
if (div > 0.) {
Pointf v2(coordf_t(point.x - pt0.x), coordf_t(point.y - pt0.y));
coordf_t t = dot(v1, v2) / div;
if (t > 0. && t < 1.) {
Point foot(coord_t(floor(coordf_t(pt0.x) + t * v1.x + 0.5)), coord_t(floor(coordf_t(pt0.y) + t * v1.y + 0.5)));
d = foot.distance_to(point);
if (d < dmin) {
dmin = d;
proj = foot;
}
}
}
}
}
return proj;
}
BoundingBox get_extents(const Polygon &poly)
{
return poly.bounding_box();