#include "GuiRenderer.h"
#include "Resources.h"
#include "../Definitions/GraphicalDefinition.h"

namespace Oyster
{
	namespace Graphics
	{
		namespace Render
		{				
			const int TEXT_NR_LETTERS=95;
			const float TEXT_SPACING=1.8f;

			void Gui::Begin2DRender()
			{
				Core::PipelineManager::SetRenderPass(Render::Resources::Gui::Pass);
			}

			void Gui::Render(ID3D11ShaderResourceView* tex,Math::Float2 pos, Math::Float2 size, Math::Float3 color)
			{
				Core::deviceContext->PSSetShaderResources(0,1,&tex);

				pos *= 2;
				pos -= 1;
				pos.y *= -1;

				Definitions::GuiData gd;
				gd.Translation = Math::Matrix::identity;
				gd.Translation.m41 = pos.x;
				gd.Translation.m42 = pos.y;
				gd.Translation.m11 = size.x;
				gd.Translation.m22 = size.y;

				void* data = Render::Resources::Gui::Data.Map();
				memcpy(data,&gd,sizeof(Definitions::GuiData));
				Render::Resources::Gui::Data.Unmap();

				data = Render::Resources::Gui::Color.Map();
				memcpy(data,&color,sizeof(Math::Float3));
				Render::Resources::Gui::Color.Unmap();


				Core::deviceContext->Draw(1,0);
			}

			void Gui::Begin2DTextRender()
			{
				Resources::Gui::Text::Vertex.Apply();
				Core::PipelineManager::SetRenderPass(Resources::Gui::Text::Pass);
			}

			void Gui::RenderText(std::wstring text, Math::Float2 pos, Math::Float2 size, Math::Float3 color)
			{
				
				size.x = size.x / (text.length() * TEXT_SPACING /2);
				

				pos *= 2;
				pos -= 1;
				pos.y *= -1;

				
				pos.x =  pos.x - (size.x  * (text.length()-1) * TEXT_SPACING /2);

				Definitions::GuiData gd;

				gd.Translation = Math::Matrix::identity;
				gd.Translation.m41 = pos.x;
				gd.Translation.m42 = pos.y;
				gd.Translation.m11 = size.x;
				gd.Translation.m22 = size.y;


				void* data = Render::Resources::Gui::Data.Map();
				memcpy(data,&gd,sizeof(Definitions::GuiData));
				Render::Resources::Gui::Data.Unmap();
				Definitions::Text2D tmpInst;

				data = Render::Resources::Gui::Color.Map();
				memcpy(data,&color,sizeof(Math::Float3));
				Render::Resources::Gui::Color.Unmap();

				void* dest = Resources::Gui::Text::Vertex.Map();
				Definitions::Text2D* dataView = reinterpret_cast<Definitions::Text2D*>(dest);
				//tmpInst.charOffset=_pos;
				for (unsigned int i=0; i<text.length(); i++)
				{
					tmpInst.coff=(1.0f/TEXT_NR_LETTERS);
					tmpInst.offset=text[i]-32;
					tmpInst.pos=i*(size.x * TEXT_SPACING);
					//float tst=getCharID(_str[i]);
					//tmpInst.offset=tst;
					//tmpInst.charOffset.x=_pos.x-i*TEXT_SIZE;
					//tmpInst.data=tst;
					dataView[i]=tmpInst;
				}
				//TextInstances[_id].NumLetters=instances;
				Resources::Gui::Text::Vertex.Unmap();

					
				Core::deviceContext->Draw(text.length(), 0);
			}
		}
	}
}