TS_SuperQuad.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        TS_SuperQuad (C++)
 *
 * COMMENTS:
 *
 */

#ifndef _TS_SuperQuad_h_
#define _TS_SuperQuad_h_

#include "TS_API.h"
#include "TS_Primitive.h"

class UT_LUT;

class TS_API TS_MetaSuperQuadric: public TS_MetaPrimitive
{
public:
    TS_MetaSuperQuadric();
    TS_MetaSuperQuadric(const TS_MetaSuperQuadric *);
    ~TS_MetaSuperQuadric() override;

    float               density(const UT_Vector3 &p) const override;
    UT_Interval         density(const UT_BoundingBox &p) const override;
    float               grad(const UT_Vector3 &point,
                             UT_Vector3 &grad) const override;
    int                 setRay(const TS_Ray &ray) override;
    float               rayDensity(float t) const override;
    UT_Interval         rayDensity(const UT_Interval &t) const override;
    void                transform(const UT_Matrix4 &) override;
    TS_MetaExpression   *duplicate() const override;
    void                setXYexp(float arg);
    float               getXYexp() const;
    void                setZexp(float arg);
    float               getZexp() const;
    void                init() override;
    void                reset() override;
    /// Compute memory usage (includes all shared memory)
    /// NOTE: Must add in TS_MetaExpression::getMemoryUsage(false).
    int64               getMemoryUsage(bool inclusive) const override;

private:
    void                setLUTs();
    float               xyexp;
    float               zexp, xyzexp;
    float               izexp1, xyzexp1;
    UT_LUT              *xylut, *zlut, *izlut;
    UT_LUT              *xy1lut, *z1lut;
    UT_Matrix4          m;
    UT_Matrix4          im;
    UT_Vector3          dir, anchor;
    int                 hitFlag;
};

#endif