renamed OutlineMesh -> PrimitiveMesh

[blank.git] / src / graphics / PrimitiveMesh.hpp

diff --git a/src/graphics/PrimitiveMesh.hpp b/src/graphics/PrimitiveMesh.hpp
new file mode 100644 (file)
index 0000000..1aa3cce
--- /dev/null
+++ b/src/graphics/PrimitiveMesh.hpp
@@ -0,0 +1,72 @@
+#ifndef BLANK_GRAPHICS_PRIMITIVEMESH_HPP_
+#define BLANK_GRAPHICS_PRIMITIVEMESH_HPP_
+
+#include "VertexArray.hpp"
+
+#include <vector>
+#include <GL/glew.h>
+#include <glm/glm.hpp>
+
+
+namespace blank {
+
+class PrimitiveMesh {
+
+public:
+       using Position = glm::vec3;
+       using Color = glm::vec4;
+       using Index = unsigned short;
+
+       using Positions = std::vector<Position>;
+       using Colors = std::vector<Color>;
+       using Indices = std::vector<Index>;
+
+       enum Attribute {
+               ATTRIB_VERTEX,
+               ATTRIB_COLOR,
+               ATTRIB_INDEX,
+               ATTRIB_COUNT,
+       };
+
+       struct Buffer {
+
+               Positions vertices;
+               Colors colors;
+               Indices indices;
+
+               void Clear() noexcept {
+                       vertices.clear();
+                       colors.clear();
+                       indices.clear();
+               }
+
+               void Reserve(size_t p, size_t i) {
+                       vertices.reserve(p);
+                       colors.reserve(p);
+                       indices.reserve(i);
+               }
+
+               void FillRect(
+                       float w, float h,
+                       const glm::vec4 &color = glm::vec4(0.0f),
+                       const glm::vec2 &pivot = glm::vec2(0.0f)
+               );
+
+       };
+
+       using VAO = VertexArray<ATTRIB_COUNT>;
+
+public:
+       void Update(const Buffer &) noexcept;
+
+       void DrawLines() noexcept;
+       void DrawTriangles() noexcept;
+
+private:
+       VAO vao;
+
+};
+
+}
+
+#endif