include/rive/math/n_slicer_helpers.hpp

#ifndef _RIVE_N_SLICER_HELPERS_HPP_
#define _RIVE_N_SLICER_HELPERS_HPP_
#include <vector>

namespace rive
{
class Axis;
class NSlicedNode;
class RawPath;
class Mat2D;

struct ScaleInfo
{
  bool useScale;
  float scaleFactor;
  float fallbackSize;
};

struct NSlicerHelpers
{
  static std::vector<float> uvStops(const std::vector<Axis*>& axes, float size);
  static std::vector<float> pxStops(const std::vector<Axis*>& axes, float size);

  static ScaleInfo analyzeUVStops(
      const std::vector<float>& uvs,
      float size,
      float scale);

  static float mapValue(
      const std::vector<float>& stops,
      const ScaleInfo& scaleInfo,
      float size,
      float value);

  static bool isFixedSegment(int i) { return i % 2 == 0; };
  static void deformLocalRenderPathWithNSlicer(
      const NSlicedNode& nslicedNode,
      RawPath& localPath,
      const Mat2D& world,
      const Mat2D& inverseWorld);
  static void deformWorldRenderPathWithNSlicer(
      const NSlicedNode& nslicedNode,
      RawPath& worldPath);
};
} // namespace rive
#endif