DebugTextRendererScreenSpace.h

// Copyright (c) 2014 eeGeo. All rights reserved.

#pragma once

#include "VectorMath.h"
#include "Fonts.h"
#include "Rendering.h"
#include "Streaming.h"
#include "DebugRendering.h"
#include "Text.h"
#include "BatchedTextAppearance.h"

#include <string>
#include <deque>

namespace Eegeo
{
    namespace DebugRendering
    {
        namespace Renderers
        {
            class DebugTextRendererScreenSpace : private Eegeo::NonCopyable
            {
                struct TextInstance
                {
                    v2 Origin;
                    v2 LocalTranslate;
                    v4 Color;
                    float Rotate;
                    std::string Text;
                    float Size;
                    float Lifetime;
                };
                
            public:
                DebugTextRendererScreenSpace(Text::IScreenTextRenderer& screenTextRenderer,
                                             const Fonts::FontInstance& font,
                                             const Text::BatchedTextAppearance& defaultTextAppearance);
                
                ~DebugTextRendererScreenSpace();
                
                void DrawText(
                              const v2& screenPosition,
                              const std::string text,
                              const float size,
                              const float lifetime = 0.0f
                              );
                
                void DrawTransformedText(
                                         const v2& origin,
                                         const v2& localTranslate,
                                         float rotate,
                                         const std::string& text,
                                         const float size,
                                         const float lifetimeInSeconds
                                         );
                
                void Update(float dt);
                
                void GenerateGeometry();
                
                void SetDepthEnabled(const bool depthEnabled);
                
            private:
  
                void GenerateGeometryForSingleInstance(const TextInstance& data);
                
                Text::IScreenTextRenderer& m_screenTextRenderer;
                
                const Fonts::FontInstance& m_fontInstance;
                std::deque<TextInstance> m_drawData;
                
                const Text::BatchedTextAppearance m_defaultTextAppearance;
                
                bool m_depthTest;
            };
        }
    }
}