src/Primitive.h

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#ifndef PRIMITIVE_H
#define PRIMITIVE_H


#include <cassert>

#include "Box.h"
#include "Shader.h"
#include "TexCoordinate.h"
#include "RGBAColor.h"


class Ray;


class Primitive
{
public:
    Primitive()
        : mBounds(),
            mShader(NULL),
            mCastShadows(true)
    {
    }

    virtual ~Primitive()
    {
    }

    virtual bool intersect(Ray & ray) const = 0;

    virtual Vec3f normal(const Ray & ray) const = 0;

    virtual TexCoordinate texCoord(const Ray & /*ray*/) const
    {
        return TexCoordinate();
    }

    const Shader * shader() const
    {
        assert(mShader!=0);
        return mShader;
    }

    void setShader(Shader * sh)
    {
        assert(sh!=0);
        mShader = sh;
    }

    const Box & bounds() const
    {
        return mBounds;
    }

    virtual RGBAColor shade(const Ray & ray) const
    {
        assert(mShader!=0);
        return mShader->shade(ray);
    }

    inline bool castShadows() const
    {
        return mCastShadows;
    }

    void setCastShadows(bool cs)
    {
        mCastShadows = cs;
    }

    virtual void axes(const Ray & ray, Vec3f & x, Vec3f & y) const = 0;

protected:
    Box         mBounds;

    Shader *    mShader;

    bool        mCastShadows;


    virtual void calcBounds() = 0;
};

#endif

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