ProxyDrawOverride.h

//
// Copyright 2017 Animal Logic
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.//
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#pragma once

#include "../Api.h"

#include "maya/MPxDrawOverride.h"
#include "AL/usdmaya/ForwardDeclares.h"

#include "pxr/pxr.h"
#include "pxr/usdImaging/usdImaging/version.h"

#include "AL/usd/utils/ForwardDeclares.h"
#if (USD_IMAGING_API_VERSION >= 7)
# include "pxr/usdImaging/usdImagingGL/hdEngine.h"
#else
# include "pxr/usdImaging/usdImaging/hdEngine.h"
#endif

PXR_NAMESPACE_USING_DIRECTIVE


namespace AL {
namespace usdmaya {
namespace nodes {

//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
class ProxyDrawOverride
  : public MHWRender::MPxDrawOverride
{
public:

  ProxyDrawOverride(const MObject& obj);

  ~ProxyDrawOverride();

  AL_USDMAYA_PUBLIC
  static MHWRender::MPxDrawOverride* creator(const MObject& obj);

  bool isBounded(
      const MDagPath& objPath,
      const MDagPath& cameraPath) const override;

  MBoundingBox boundingBox(
      const MDagPath& objPath,
      const MDagPath& cameraPath) const override;

  MUserData* prepareForDraw(
      const MDagPath& objPath,
      const MDagPath& cameraPath,
      const MHWRender::MFrameContext& frameContext,
      MUserData* oldData) override;

  AL_USDMAYA_PUBLIC
  static MString kDrawDbClassification;

  AL_USDMAYA_PUBLIC
  static MString kDrawRegistrantId;

  AL_USDMAYA_PUBLIC
  static void draw(const MHWRender::MDrawContext& context, const MUserData* data);

  AL_USDMAYA_PUBLIC
  static ProxyShape* getShape(const MDagPath& objPath);

  MHWRender::DrawAPI supportedDrawAPIs() const override
    { return MHWRender::kOpenGL | MHWRender::kOpenGLCoreProfile; }

#if MAYA_API_VERSION >= 201700
  bool excludedFromPostEffects() const override
    { return false; }
#endif

private:
  static MUint64 s_lastRefreshFrameStamp;
  
#if MAYA_API_VERSION >= 20190000
  bool wantUserSelection() const override {return true;}
  
  bool userSelect(
      const MHWRender::MSelectionInfo& selectInfo,
      const MHWRender::MDrawContext& context,
      const MDagPath& objPath,
      const MUserData* data,
      MSelectionList& selectionList,
      MPointArray& worldSpaceHitPts) override;
#endif

};

//----------------------------------------------------------------------------------------------------------------------
} // nodes
} // usdmaya
} // AL
//----------------------------------------------------------------------------------------------------------------------