#include <path.h>

Public Member Functions
std::tuple< size_t, size_t >	GetContourPointBounds (size_t contour_index) const

Public Attributes
std::vector< Point >	points

std::vector< PolylineContour >	contours

Detailed Description

One or more contours represented as a series of points and indices in the point vector representing the start of a new contour.

Definition at line 78 of file path.h.

Member Function Documentation

◆ GetContourPointBounds()

std::tuple< size_t, size_t > impeller::Path::Polyline::GetContourPointBounds ( size_t contour_index ) const

Convenience method to compute the start (inclusive) and end (exclusive) point of the given contour index.

The contour_index parameter is clamped to contours.size().

Definition at line 20 of file path.cc.

                                 {
   if (contour_index >= contours.size()) {
     return {points.size(), points.size()};
   }
   const size_t start_index = contours.at(contour_index).start_index;
   const size_t end_index = (contour_index >= contours.size() - 1)
                                ? points.size()
                                : contours.at(contour_index + 1).start_index;
   return std::make_tuple(start_index, end_index);
 }

References contours, and points.

Referenced by impeller::Tessellator::Tessellate(), impeller::TessellateConvex(), and impeller::testing::TEST().

Member Data Documentation

◆ contours

std::vector<PolylineContour> impeller::Path::Polyline::contours

Definition at line 82 of file path.h.

Referenced by impeller::Path::CreatePolyline(), GetContourPointBounds(), impeller::Tessellator::Tessellate(), impeller::TessellateConvex(), and impeller::testing::TEST().

◆ points

std::vector<Point> impeller::Path::Polyline::points

Points in the polyline, which may represent multiple contours specified by indices in |breaks|.

Definition at line 81 of file path.h.