charcoal/OpenGLEngine/MeshTypes.h

#pragma once

#include <glm/glm.hpp>
#include "Renderable.h"

namespace charcoal
{
	namespace builtin
	{
		using namespace glm;

		typedef vec3 Position;
		typedef vec3 Normal;
		typedef vec4 Color;
		typedef vec2 UV;

		typedef unsigned int Index;

		class Positioned
		{
			virtual void set_position(const Position& position) = 0;
		};

		class Normaled
		{
			virtual void set_normal(const Normal& normal) = 0;
		};

		class Colored
		{
			virtual void set_color(const Color& color) = 0;
		};

		class Textured
		{
			virtual void set_uv(const UV& uv) = 0;
		};

		// Simple types that implement the interfaces

		struct BasicVertex : public Positioned
		{
			void set_position(const Position& position) override { this->position = position; }

			Position position;
		};

		typedef Index BasicIndex;

		typedef Renderable<BasicVertex, BasicIndex> BasicRenderable;

		struct PNVertex : public Positioned, public Normaled
		{
			void set_position(const Position& position) override { this->position = position; }
			void set_normal(const Normal& normal) override { this->normal = normal; }

			Position position;
			Normal normal;
		};

		struct PNTVertex : public Positioned, public Normaled, public Textured
		{
			void set_position(const Position& position) override { this->position = position; }
			void set_normal(const Normal& normal) override { this->normal = normal; }
			void set_uv(const UV& uv) override { this->uv = uv; }

			Position position;
			Normal normal;
			UV uv;
		};
	}
}