ply_data.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include <string>
#include <utility>
 
#include "BLI_math_vector_types.hh"
#include "BLI_string_ref.hh"
#include "BLI_vector.hh"
 
namespace blender::io::ply {
 
enum PlyDataTypes { NONE, CHAR, UCHAR, SHORT, USHORT, INT, UINT, FLOAT, DOUBLE, PLY_TYPE_COUNT };
 
struct PlyCustomAttribute {
  PlyCustomAttribute(const StringRef name_, int64_t size) : name(name_), data(size, 0.0f) {}
  std::string name;
  Vector<float> data; /* Any custom PLY attributes are converted to floats. */
};
 
struct PlyData {
  Vector<float3> vertices;
  Vector<float3> vertex_normals;
  Vector<float4> vertex_colors; /* Linear space, 0..1 range colors. */
  Vector<PlyCustomAttribute> vertex_custom_attr;
  Vector<std::pair<int, int>> edges;
  Vector<uint32_t> face_vertices;
  Vector<uint32_t> face_sizes;
  Vector<float2> uv_coordinates;
  std::string error;
};
 
enum PlyFormatType { ASCII, BINARY_LE, BINARY_BE };
 
struct PlyProperty {
  std::string name;
  PlyDataTypes type = PlyDataTypes::NONE;
  PlyDataTypes count_type = PlyDataTypes::NONE; /* NONE means it's not a list property */
};
 
struct PlyElement {
  std::string name;
  int count = 0;
  Vector<PlyProperty> properties;
  int stride = 0;
 
  void calc_stride();
};
 
struct PlyHeader {
  Vector<PlyElement> elements;
  PlyFormatType type;
};
 
}  // namespace blender::io::ply