basisCurves.h

//
// Copyright 2016 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HD_BASIS_CURVES_H
#define PXR_IMAGING_HD_BASIS_CURVES_H
 
#include "pxr/pxr.h"
#include "pxr/imaging/hd/api.h"
#include "pxr/imaging/hd/version.h"
#include "pxr/imaging/hd/rprim.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
#define HD_BASISCURVES_REPR_DESC_TOKENS \
    (surfaceShader)                     \
    (surfaceShaderUnlit)                \
    (hullColor)                         \
    (pointColor)
 
TF_DECLARE_PUBLIC_TOKENS(HdBasisCurvesReprDescTokens, HD_API,
                         HD_BASISCURVES_REPR_DESC_TOKENS);
 
struct HdBasisCurvesReprDesc
{
    HdBasisCurvesReprDesc(
        HdBasisCurvesGeomStyle geomStyle = HdBasisCurvesGeomStyleInvalid,
        TfToken shadingTerminal = HdBasisCurvesReprDescTokens->surfaceShader)
        : geomStyle(geomStyle),
          shadingTerminal(shadingTerminal)
        {}
 
    bool IsEmpty() const {
        return geomStyle == HdBasisCurvesGeomStyleInvalid;
    }
    
    HdBasisCurvesGeomStyle geomStyle;
    TfToken         shadingTerminal;
};
 
class HdBasisCurves : public HdRprim
{
public:
    HD_API
    ~HdBasisCurves() override;
    
    inline HdBasisCurvesTopology  GetBasisCurvesTopology(HdSceneDelegate* delegate) const;
    inline HdDisplayStyle         GetDisplayStyle(HdSceneDelegate* delegate)        const;
 
    HD_API
    TfTokenVector const & GetBuiltinPrimvarNames() const override;
 
    HD_API
    static void ConfigureRepr(TfToken const &reprName,
                              HdBasisCurvesReprDesc desc);
 
    HD_API
    static bool IsEnabledForceRefinedCurves();
    
protected:
    HD_API
    HdBasisCurves(SdfPath const& id);
 
    using _BasisCurvesReprConfig = _ReprDescConfigs<HdBasisCurvesReprDesc>;
 
    HD_API
    static _BasisCurvesReprConfig::DescArray
        _GetReprDesc(TfToken const &reprName);
 
private:
    // Class can not be default constructed or copied.
    HdBasisCurves()                                  = delete;
    HdBasisCurves(const HdBasisCurves &)             = delete;
    HdBasisCurves &operator =(const HdBasisCurves &) = delete;
 
    static _BasisCurvesReprConfig _reprDescConfig;
};
 
inline HdBasisCurvesTopology
HdBasisCurves::GetBasisCurvesTopology(HdSceneDelegate* delegate) const
{
    return delegate->GetBasisCurvesTopology(GetId());
}
 
inline HdDisplayStyle
HdBasisCurves::GetDisplayStyle(HdSceneDelegate* delegate) const
{
    return delegate->GetDisplayStyle(GetId());
}
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_IMAGING_HD_BASIS_CURVES_H