Cylinder3.h

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/*************************************************************************
> File Name: Cylinder3.h
> Project Name: CubbyFlow
> Author: Chan-Ho Chris Ohk
> Purpose: 3-D cylinder geometry.
> Created Time: 2017/06/24
> Copyright (c) 2018, Chan-Ho Chris Ohk
*************************************************************************/
#ifndef CUBBYFLOW_CYLINDER3_H
#define CUBBYFLOW_CYLINDER3_H

#include <Core/Surface/Surface3.h>

namespace CubbyFlow
{
    class Cylinder3 final : public Surface3
    {
    public:
        class Builder;

        Vector3D center;

        double radius = 1.0;

        double height = 1.0;

        Cylinder3(const Transform3& transform = Transform3(), bool isNormalFlipped = false);

        Cylinder3(const Vector3D& center, double radius, double height,
            const Transform3& transform = Transform3(), bool isNormalFlipped = false);

        Cylinder3(const Cylinder3& other);

        static Builder GetBuilder();

    protected:
        // Surface3 implementations

        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& otherPoint) const override;

        SurfaceRayIntersection3 ClosestIntersectionLocal(const Ray3D& ray) const override;
    };

    using Cylinder3Ptr = std::shared_ptr<Cylinder3>;

    class Cylinder3::Builder final : public SurfaceBuilderBase3<Cylinder3::Builder>
    {
    public:
        Builder& WithCenter(const Vector3D& center);

        Builder& WithRadius(double radius);

        Builder& WithHeight(double height);

        Cylinder3 Build() const;

        Cylinder3Ptr MakeShared() const;

    private:
        Vector3D m_center{ 0, 0, 0 };
        double m_radius = 1.0;
        double m_height = 1.0;
    };
}

#endif