lets do this properly.

git-svn-id: svn://svn.ijw.co.nz/svn/OpenRa@1144 993157c7-ee19-0410-b2c4-bb4e9862e678

BluntDx/SpriteHelper.h

@@ -0,0 +1,64 @@
+#pragma once
+
+namespace BluntDirectX { namespace Direct3D
+{
+	public ref class SpriteHelper
+	{
+	internal:
+		ID3DXSprite* sprite;
+
+	public:
+		SpriteHelper( GraphicsDevice^ device )
+		{
+			HRESULT hr;
+			ID3DXSprite* s;
+
+			if (FAILED(
+				hr = D3DXCreateSprite( device->device, &s )))
+				ThrowHelper::Hr( hr );
+
+			sprite = s;
+		}
+
+		void SetTransform( float sx, float sy, float tx, float ty )
+		{
+			D3DXMATRIX m;
+			memset( &m, 0, sizeof(m));
+			m._11 = sx; m._22 = sy; m._33 = 1; m._44 = 1;
+			m._41 = tx; m._42 = ty;
+
+			sprite->SetTransform(&m);
+		}
+
+		void Begin()
+		{
+			sprite->Begin( D3DXSPRITE_ALPHABLEND );
+		}
+
+		void End()
+		{
+			sprite->End();
+		}
+
+		void Flush()
+		{
+			sprite->Flush();
+		}
+
+		void Draw( Texture^ texture, int left, int top, int width, int height, int color )
+		{
+			RECT r = { left, top, width + left, height + top };
+			sprite->Draw( (IDirect3DTexture9*)texture->texture, &r, NULL, NULL, color );
+		}
+
+		void Draw( Texture^ texture, int color )
+		{
+			sprite->Draw( (IDirect3DTexture9*)texture->texture, NULL, NULL, NULL, color );
+		}
+
+		~SpriteHelper()
+		{
+			safe_release( sprite );
+		}
+	};
+}}