#pragma once
#include <vector>
#include "Contour.h"
#include "YAxisOrientation.h"
#include "Scanline.h"
namespace msdfgen {
// Threshold of the dot product of adjacent edge directions to be considered convergent.
#define MSDFGEN_CORNER_DOT_EPSILON .000001
/// Vector shape representation.
class Shape {
public:
struct Bounds {
// NOTE: b is actually the lower Y-coordinate and t the higher Y-coordinate. For Y_DOWNWARD orientation, b is actually the top and t the bottom. May be renamed in a future version.
double l, b, r, t;
};
/// The list of contours the shape consists of.
std::vector<Contour> contours;
/// Specifies whether the shape uses bottom-to-top (false) or top-to-bottom (true) Y coordinates.
/// DEPRECATED - use getYAxisOrientation / setYAxisOrientation instead.
bool inverseYAxis;
Shape();
/// Adds a contour.
void addContour(const Contour &contour);
#ifdef MSDFGEN_USE_CPP11
void addContour(Contour &&contour);
#endif
/// Adds a blank contour and returns its reference.
Contour &addContour();
/// Normalizes the shape geometry for distance field generation.
void normalize();
/// Performs basic checks to determine if the object represents a valid shape.
bool validate() const;
/// Adjusts the bounding box to fit the shape.
void bound(double &xMin, double &yMin, double &xMax, double &yMax) const;
/// Adjusts the bounding box to fit the shape border's mitered corners.
void boundMiters(double &xMin, double &yMin, double &xMax, double &yMax, double border, double miterLimit, int polarity) const;
/// Computes the minimum bounding box that fits the shape, optionally with a (mitered) border.
Bounds getBounds(double border = 0, double miterLimit = 0, int polarity = 0) const;
/// Outputs the scanline that intersects the shape at y.
void scanline(Scanline &line, double y) const;
/// Returns the total number of edge segments
int edgeCount() const;
/// Assumes its contours are unoriented (even-odd fill rule). Attempts to orient them to conform to the non-zero winding rule.
void orientContours();
/// Returns the orientation of the axis of the shape's Y coordinates.
YAxisOrientation getYAxisOrientation() const;
/// Sets the orientation of the axis of the shape's Y coordinates.
void setYAxisOrientation(YAxisOrientation yAxisOrientation);
};
}