src/graphics/SkyBoxMesh.hpp

   1 #ifndef BLANK_GRAPHICS_SKYBOXMESH_HPP_
   2 #define BLANK_GRAPHICS_SKYBOXMESH_HPP_
   3
   4 #include "glm.hpp"
   5 #include "VertexArray.hpp"
   6
   7 #include <vector>
   8
   9
  10 namespace blank {
  11
  12 class SkyBoxMesh {
  13
  14 public:
  15         using Position = glm::vec3;
  16         using Index = unsigned int;
  17
  18         using Positions = std::vector<Position>;
  19         using Indices = std::vector<Index>;
  20
  21         enum Attribute {
  22                 ATTRIB_VERTEX,
  23                 ATTRIB_INDEX,
  24                 ATTRIB_COUNT,
  25         };
  26
  27         struct Buffer {
  28
  29                 Positions vertices;
  30                 Indices indices;
  31
  32                 void Clear() noexcept {
  33                         vertices.clear();
  34                         indices.clear();
  35                 }
  36
  37                 void Reserve(size_t p, size_t i) {
  38                         vertices.reserve(p);
  39                         indices.reserve(i);
  40                 }
  41
  42         };
  43
  44         using VAO = VertexArray<ATTRIB_COUNT>;
  45
  46 public:
  47         void LoadUnitBox();
  48         void Update(const Buffer &) noexcept;
  49
  50         bool Empty() const noexcept {
  51                 return vao.Empty();
  52         }
  53
  54         void Draw() const noexcept {
  55                 vao.DrawTriangleElements();
  56         }
  57
  58 private:
  59         VAO vao;
  60
  61 };
  62
  63 }
  64
  65 #endif