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MeshDrwHelper.h
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MeshDrwHelper.h
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//-*****************************************************************************
//
// Copyright (c) 2009-2011,
// Sony Pictures Imageworks, Inc. and
// Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Sony Pictures Imageworks, nor
// Industrial Light & Magic nor the names of their contributors may be used
// to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//-*****************************************************************************
#ifndef _SimpleAbcViewer_MeshDrwHelper_h_
#define _SimpleAbcViewer_MeshDrwHelper_h_
#include "Foundation.h"
#include "DrawContext.h"
#include <maya/MHardwareRenderer.h>
#include <maya/MGLFunctionTable.h>
#include <maya/MBoundingBox.h>
namespace SimpleAbcViewer {
//-*****************************************************************************
//! \brief Both the SubD and PolyMesh classes draw in the same way, so we
//! create this helper class to do the common work.
class MeshDrwHelper : private boost::noncopyable
{
public:
// Default constructor
MeshDrwHelper();
// Destructor
~MeshDrwHelper();
// This is a "full update" of all parameters.
// If N is empty, normals will be computed.
void update( P3fArraySamplePtr iP,
V3fArraySamplePtr iN,
Int32ArraySamplePtr iIndices,
Int32ArraySamplePtr iCounts,
Abc::Box3d iBounds = Abc::Box3d() );
// Update just positions and possibly normals
void update( P3fArraySamplePtr iP,
V3fArraySamplePtr iN,
Abc::Box3d iBounds = Abc::Box3d() );
// Update just normals
void updateNormals( V3fArraySamplePtr iN );
void updateArbs(Alembic::Abc::ICompoundProperty & iParent,
Int32ArraySamplePtr iIndices,
Int32ArraySamplePtr iCounts );
// This returns validity.
bool valid() const { return m_valid; }
// Return the bounds.
Box3d getBounds() const { return m_bounds; }
// And, finally, this draws.
void draw( const DrawContext & iCtx ) const;
// This is a weird thing. Just makes the helper invalid
// by nulling everything out. For internal use.
void makeInvalid();
void setName(std::string name) { m_name = name; }
std::string getName() const { return m_name; }
protected:
void computeBounds();
static MGLFunctionTable* g_GLFT;
typedef Imath::Vec3<unsigned int> Tri;
typedef std::vector<Tri> TriArray;
P3fArraySamplePtr m_meshP;
V3fArraySamplePtr m_meshN;
Int32ArraySamplePtr m_meshIndices;
Int32ArraySamplePtr m_meshCounts;
std::vector<V3f> m_customN;
std::vector<C4f> m_colors;
bool m_valid;
Box3d m_bounds;
TriArray m_triangles;
std::string m_name;
};
} // End namespace SimpleAbcViewer
#endif