camera.h

//
// Copyright 2019 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef EXT_RMANPKG_PLUGIN_RENDERMAN_PLUGIN_HD_PRMAN_CAMERA_H
#define EXT_RMANPKG_PLUGIN_RENDERMAN_PLUGIN_HD_PRMAN_CAMERA_H
 
#include "pxr/pxr.h"
#include "hdPrman/api.h"
#include "hdPrman/renderParam.h"
#include "pxr/imaging/hd/camera.h"
#include "pxr/imaging/hd/timeSampleArray.h"
 
#include <Riley.h>
 
#include "pxr/base/vt/array.h"
 
#include <optional>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdSceneDelegate;
 
class HdPrmanCamera final : public HdCamera
{
public:
    struct ShutterCurve
    {
        std::optional<float> shutterOpenTime;
        std::optional<float> shutterCloseTime;
        std::optional<std::array<float, 8>> shutteropening;
    };
 
    HDPRMAN_API
    HdPrmanCamera(SdfPath const& id);
 
    HDPRMAN_API
    ~HdPrmanCamera() override;
 
    HDPRMAN_API
    void Sync(HdSceneDelegate *sceneDelegate,
              HdRenderParam   *renderParam,
              HdDirtyBits     *dirtyBits) override;
    
    HDPRMAN_API
    HdTimeSampleArray<GfMatrix4d, HDPRMAN_MAX_TIME_SAMPLES> const&
    GetTimeSampleXforms() const {
        return _sampleXforms;
    }
 
    riley::ShadingNode
    GetProjectionNode() const {
        return _projectionNode;
    }
 
#if HD_API_VERSION < 52
    float GetLensDistortionK1() const {
        return _lensDistortionK1;
    }
 
    float GetLensDistortionK2() const {
        return _lensDistortionK2;
    }
 
    const GfVec2f &GetLensDistortionCenter() const {
        return _lensDistortionCenter;
    }
 
    float GetLensDistortionAnaSq() const {
        return _lensDistortionAnaSq;
    }
 
    const GfVec2f &GetLensDistortionAsym() const {
        return _lensDistortionAsym;
    }
 
    float GetLensDistortionScale() const {
        return _lensDistortionScale;
    }
#endif
 
    const ShutterCurve& GetShutterCurve() const {
        return _shutterCurve;
    }
 
    HDPRMAN_API
    void SetRileyCameraParams(RtParamList& camParams,
                              RtParamList& camParamsOverride,
                              RtParamList& projParams) const;
 
    float GetApertureAngle() const {
        return _apertureAngle;
    }
 
    float GetApertureDensity() const {
        return _apertureDensity;
    }
 
    float GetApertureNSides() const {
        return _apertureNSides;
    }
 
    float GetApertureRoundness() const {
        return _apertureRoundness;
    }
 
    float GetDofMult() const {
        return _dofMult;
    }
 
private:
 
    void setFov(RtParamList& projParams) const;
 
    void setScreenWindow(RtParamList& camParams, bool isPerspective) const;
 
    HdTimeSampleArray<GfMatrix4d, HDPRMAN_MAX_TIME_SAMPLES> _sampleXforms;
 
#if HD_API_VERSION < 52
    float _lensDistortionK1;
    float _lensDistortionK2;
    GfVec2f _lensDistortionCenter;
    float _lensDistortionAnaSq;
    GfVec2f _lensDistortionAsym;
    float _lensDistortionScale;
#endif
 
    ShutterCurve _shutterCurve;
 
    float _apertureAngle;
    float _apertureDensity;
    int _apertureNSides;
    float _apertureRoundness;
    float _dofMult;
 
    VtDictionary _params;
 
    riley::ShadingNode _projectionNode;
};
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif  // EXT_RMANPKG_PLUGIN_RENDERMAN_PLUGIN_HD_PRMAN_CAMERA_H