// Copyright (c) 2022 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#include "QuadMesh.hpp"

using namespace Dawn;

void QuadMesh::bufferQuadMeshWithZ(
  Mesh *mesh,
  glm::vec2 xy0, glm::vec2 uv0,
  glm::vec2 xy1, glm::vec2 uv1,
  float_t z, int32_t verticeStart, int32_t indiceStart
) {
  assertNotNull(mesh);

  mesh->bufferPositions(
    verticeStart, std::array<glm::vec3, QUAD_VERTICE_COUNT>{{
      glm::vec3(xy0, z),
      glm::vec3(xy1.x, xy0.y, z),
      glm::vec3(xy0.x, xy1.y, z),
      glm::vec3(xy1, z)
    }}
  );

  mesh->bufferCoordinates(
    verticeStart, std::array<glm::vec2, QUAD_VERTICE_COUNT>{{
      uv0, glm::vec2(uv1.x, uv0.y),
      glm::vec2(uv0.x, uv1.y), uv1
    }}
  );

  mesh->bufferIndices(
    indiceStart, std::array<meshindice_t, QUAD_INDICE_COUNT>{{
      verticeStart, verticeStart + 1, verticeStart + 2,
      verticeStart + 1, verticeStart + 2, verticeStart + 3
    }}
  );
}

void QuadMesh::bufferQuadMesh(
  Mesh *mesh,
  glm::vec2 xy0, glm::vec2 uv0,
  glm::vec2 xy1, glm::vec2 uv1,
  int32_t verticeStart, int32_t indiceStart
) {
  QuadMesh::bufferQuadMeshWithZ(
    mesh, xy0, uv0, xy1, uv1, 0, verticeStart, indiceStart
  );
}