SurfaceToImplicit2.h

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/*************************************************************************
> File Name: SurfaceToImplicit2.h
> Project Name: CubbyFlow
> Author: Chan-Ho Chris Ohk
> Purpose: 2-D implicit surface wrapper for generic Surface2 instance.
> Created Time: 2017/04/16
> Copyright (c) 2018, Chan-Ho Chris Ohk
*************************************************************************/
#ifndef CUBBYFLOW_SURFACE_TO_IMPLICIT2_H
#define CUBBYFLOW_SURFACE_TO_IMPLICIT2_H

#include <Core/Surface/ImplicitSurface2.h>

namespace CubbyFlow
{
    class SurfaceToImplicit2 final : public ImplicitSurface2
    {
    public:
        class Builder;

        SurfaceToImplicit2(
            const Surface2Ptr& surface,
            const Transform2& transform = Transform2(),
            bool isNormalFlipped = false);

        SurfaceToImplicit2(const SurfaceToImplicit2& other);

        Surface2Ptr GetSurface() const;

        static Builder GetBuilder();

    protected:
        Vector2D ClosestPointLocal(const Vector2D& otherPoint) const override;

        double ClosestDistanceLocal(const Vector2D& otherPoint) const override;

        bool IntersectsLocal(const Ray2D& ray) const override;

        BoundingBox2D BoundingBoxLocal() const override;

        Vector2D ClosestNormalLocal(const Vector2D& otherPoint) const override;

        double SignedDistanceLocal(const Vector2D& otherPoint) const override;

        SurfaceRayIntersection2 ClosestIntersectionLocal(const Ray2D& ray) const override;

    private:
        Surface2Ptr m_surface;
    };

    using SurfaceToImplicit2Ptr = std::shared_ptr<SurfaceToImplicit2>;
    
    class SurfaceToImplicit2::Builder final : public SurfaceBuilderBase2<SurfaceToImplicit2::Builder>
    {
    public:
        Builder& WithSurface(const Surface2Ptr& surface);

        SurfaceToImplicit2 Build() const;

        SurfaceToImplicit2Ptr MakeShared() const;

    private:
        Surface2Ptr m_surface;
    };
}

#endif