X-Git-Url: https://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fgraphics%2FPrimitiveMesh.hpp;fp=src%2Fgraphics%2FPrimitiveMesh.hpp;h=1aa3cce58acf417e6605fe82f99c2d473845ed1c;hb=75172fd735e34082c34b47ae7c194445b53038d9;hp=0000000000000000000000000000000000000000;hpb=57d3e33b47c92d56de4007e23800d9bcdb353463;p=blank.git

diff --git a/src/graphics/PrimitiveMesh.hpp b/src/graphics/PrimitiveMesh.hpp
new file mode 100644
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