GU_PrimCamera.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:        GU_PrimCamera.h (C++)
 *
 * COMMENTS:
 *      Utilities for Camera Primitives
 */

#ifndef __GU_PrimCamera__
#define __GU_PrimCamera__

#include "GU_API.h"
#include <GEO/GEO_PrimCamera.h>
#include "GU_Detail.h"

class UT_MemoryCounter;

class GU_API GU_PrimCamera : public GEO_PrimCamera
{
protected:
    /// NOTE: Primitives should not be deleted directly.  They are managed
    ///       by the GA_PrimitiveList and the stash.
    ~GU_PrimCamera() override {}

public:
    /// NOTE: This constructor should only be called via GU_PrimitiveFactory.
    GU_PrimCamera(GU_Detail *gdp, GA_Offset offset=GA_INVALID_OFFSET);

    /// Report approximate memory usage.
    int64 getMemoryUsage() const override;

    /// Count memory usage using a UT_MemoryCounter in order to count
    /// shared memory correctly.
    /// NOTE: This should always include sizeof(*this).
    void countMemory(UT_MemoryCounter &counter) const override;

    const GA_PrimitiveDefinition &getTypeDef() const override
    {
        UT_ASSERT(theDefinition);
        return *theDefinition;
    }

    static GA_PrimitiveTypeId typeId()
    {
        UT_ASSERT(theDefinition);
        return theDefinition->getId();
    }

    // Conversion Methods: to polygon, nurb curve, and bezier curve
    GEO_Primitive       *convert(GEO_ConvertParms &parms,
                                 GA_PointGroup *usedpts = nullptr) override;
    GEO_Primitive       *convertNew(GEO_ConvertParms &parms) override;

    void                 normal(NormalComp &output) const override;
    void                 normal(NormalCompD &output) const override;

    int                  intersectRay(const UT_Vector3 &o, const UT_Vector3 &d,
                                float tmax = 1E17F, float tol = 1E-12F,
                                float *distance = nullptr, 
                                UT_Vector3 *pos = nullptr, 
                                UT_Vector3 *nml = nullptr, int accurate = 0,
                                float *u = nullptr, float *v = nullptr, 
                                int ignoretrim = 1) const override;

    static GEO_Primitive *build(GU_Detail *gdp, const UT_CameraParms &parms,
                                const UT_Matrix4D &xform); 

protected:
private:
    static GA_PrimitiveDefinition       *theDefinition;

    friend class                         GU_PrimitiveFactory;
SYS_DEPRECATED_PUSH_DISABLE()
};
SYS_DEPRECATED_POP_DISABLE()

#endif