FrameVisualizer.h

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#pragma once
 
#include "EngineEnv/Visualizer/Visualizer.h"
#include "Math/TVector2.h"
#include "Math/Geometry/TAABB2D.h"
#include "SDL/sdl_interface.h"
 
#include <Common/primitive_type.h>
 
#include <optional>
 
namespace ph
{
 
class FrameVisualizer : public Visualizer
{
public:
    void cook(const CoreCookingContext& ctx, CoreCookedUnit& cooked) override = 0;
 
    std::optional<math::TAABB2D<int64>> getCropWindowPx() const;
 
private:
    int64 m_cropWindowXPx;
    int64 m_cropWindowYPx;
    int64 m_cropWindowWPx;
    int64 m_cropWindowHPx;
 
public:
    PH_DEFINE_SDL_CLASS(TSdlOwnerClass<FrameVisualizer>)
    {
        ClassType clazz("frame");
        clazz.docName("Frame Visualizer");
        clazz.description("A visualizer that produces frames, a typical example is an image.");
        clazz.baseOn<Visualizer>();
 
        TSdlInt64<OwnerType> cropWindowXPx("rect-x", &OwnerType::m_cropWindowXPx);
        cropWindowXPx.description("X coordinate of the lower-left corner of the film cropping window.");
        cropWindowXPx.defaultTo(0);
        cropWindowXPx.optional();
        clazz.addField(cropWindowXPx);
 
        TSdlInt64<OwnerType> cropWindowYPx("rect-y", &OwnerType::m_cropWindowYPx);
        cropWindowYPx.description("Y coordinate of the lower-left corner of the film cropping window.");
        cropWindowYPx.defaultTo(0);
        cropWindowYPx.optional();
        clazz.addField(cropWindowYPx);
 
        TSdlInt64<OwnerType> cropWindowWPx("rect-w", &OwnerType::m_cropWindowWPx);
        cropWindowWPx.description("Width of the film cropping window.");
        cropWindowWPx.defaultTo(0);
        cropWindowWPx.optional();
        clazz.addField(cropWindowWPx);
 
        TSdlInt64<OwnerType> cropWindowHPx("rect-h", &OwnerType::m_cropWindowHPx);
        cropWindowHPx.description("Height of the film cropping window.");
        cropWindowHPx.defaultTo(0);
        cropWindowHPx.optional();
        clazz.addField(cropWindowHPx);
 
        return clazz;
    }
};
 
// In-header Implementations:
 
inline std::optional<math::TAABB2D<int64>> FrameVisualizer::getCropWindowPx() const
{
    if(m_cropWindowXPx == 0 && m_cropWindowYPx == 0 && 
       m_cropWindowWPx == 0 && m_cropWindowHPx == 0)
    {
        return std::nullopt;
    }
    else
    {
        return math::TAABB2D<int64>(
            {m_cropWindowXPx, m_cropWindowYPx}, 
            {m_cropWindowXPx + m_cropWindowWPx, m_cropWindowYPx + m_cropWindowHPx});
    }
}
 
}// end namespace ph