SurfaceToImplicit3.h

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/*************************************************************************
> File Name: SurfaceToImplicit3.h
> Project Name: CubbyFlow
> Author: Dongmin Kim
> Purpose: 3-D implicit surface wrapper for generic Surface3 instance.
> Created Time: 2017/04/18
> Copyright (c) 2018, Dongmin Kim
*************************************************************************/
#ifndef CUBBYFLOW_SURFACE_TO_IMPLICIT3_H
#define CUBBYFLOW_SURFACE_TO_IMPLICIT3_H

#include <Core/Surface/ImplicitSurface3.h>

namespace CubbyFlow
{
    class SurfaceToImplicit3 final : public ImplicitSurface3
    {
    public:
        class Builder;

        SurfaceToImplicit3(
            const Surface3Ptr& surface,
            const Transform3& transform = Transform3(),
            bool isNormalFlipped = false);

        SurfaceToImplicit3(const SurfaceToImplicit3& other);

        Surface3Ptr GetSurface() const;

        static Builder GetBuilder();

    protected:
        Vector3D ClosestPointLocal(const Vector3D& otherPoint) const override;

        double ClosestDistanceLocal(const Vector3D& otherPoint) const override;

        bool IntersectsLocal(const Ray3D& ray) const override;

        BoundingBox3D BoundingBoxLocal() const override;

        Vector3D ClosestNormalLocal(const Vector3D& ohterPoint) const override;

        double SignedDistanceLocal(const Vector3D& otherPoint) const override;

        SurfaceRayIntersection3 ClosestIntersectionLocal(const Ray3D& ray) const override;

    private:
        Surface3Ptr m_surface;
    };

    using SurfaceToImplicit3Ptr = std::shared_ptr<SurfaceToImplicit3>;

    class SurfaceToImplicit3::Builder final : public SurfaceBuilderBase3<SurfaceToImplicit3::Builder>
    {
    public:
        Builder& WithSurface(const Surface3Ptr& surface);

        SurfaceToImplicit3 Build() const;

        SurfaceToImplicit3Ptr MakeShared() const;
    private:
        Surface3Ptr m_surface;
    };
}

#endif