tessellator.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_IMPELLER_TESSELLATOR_C_TESSELLATOR_H_
#define FLUTTER_IMPELLER_TESSELLATOR_C_TESSELLATOR_H_
 
#include <cstdint>
 
#include "flutter/display_list/geometry/dl_path_builder.h"
 
#ifdef _WIN32
#define IMPELLER_API __declspec(dllexport)
#else
#define IMPELLER_API __attribute__((visibility("default")))
#endif
 
extern "C" {
 
namespace impeller {
 
using PathBuilder = flutter::DlPathBuilder;
 
struct IMPELLER_API Vertices {
  float* points;
  uint32_t length;
};
 
IMPELLER_API PathBuilder* CreatePathBuilder();
 
IMPELLER_API void DestroyPathBuilder(PathBuilder* builder);
 
IMPELLER_API void MoveTo(PathBuilder* builder, Scalar x, Scalar y);
 
IMPELLER_API void LineTo(PathBuilder* builder, Scalar x, Scalar y);
 
IMPELLER_API void CubicTo(PathBuilder* builder,
                          Scalar x1,
                          Scalar y1,
                          Scalar x2,
                          Scalar y2,
                          Scalar x3,
                          Scalar y3);
 
IMPELLER_API void Close(PathBuilder* builder);
 
IMPELLER_API struct Vertices* Tessellate(PathBuilder* builder,
                                         int fill_type,
                                         Scalar tolerance);
 
IMPELLER_API void DestroyVertices(Vertices* vertices);
 
}  // namespace impeller
}
 
#endif  // FLUTTER_IMPELLER_TESSELLATOR_C_TESSELLATOR_H_