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EdgeGrid::contours_simplified for supports

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This commit is contained in:
bubnikv 2016-11-29 19:28:33 +01:00
parent ca5ad58ad2
commit 5c23ee504c
2 changed files with 127 additions and 2 deletions
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17
xs/src/libslic3r/EdgeGrid.hpp
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@ -17,6 +17,8 @@ struct Grid
Grid();
~Grid();
void set_bbox(const BoundingBox &bbox) { m_bbox = bbox; }
void create(const Polygons &polygons, coord_t resolution);
void create(const ExPolygon &expoly, coord_t resolution);
void create(const ExPolygons &expolygons, coord_t resolution);
@ -54,6 +56,9 @@ struct Grid
const size_t rows() const { return m_rows; }
const size_t cols() const { return m_cols; }
// For supports: Contours enclosing the rasterized edges.
Polygons contours_simplified() const;
protected:
struct Cell {
Cell() : begin(0), end(0) {}
@ -65,6 +70,18 @@ protected:
#if 0
bool line_cell_intersect(const Point &p1, const Point &p2, const Cell &cell);
#endif
bool cell_inside_or_crossing(int r, int c) const
{
if (r < 0 || r >= m_rows ||
c < 0 || c >= m_cols)
// The cell is outside the domain. Hoping that the contours were correctly oriented, so
// there is a CCW outmost contour so the out of domain cells are outside.
return false;
const Cell &cell = m_cells[r * m_cols + c];
return
(cell.begin < cell.end) ||
(! m_signed_distance_field.empty() && m_signed_distance_field[r * (m_cols + 1) + c] <= 0.f);
}
// Bounding box around the contours.
BoundingBox m_bbox;