#ifndef shaveVertexShader_h
#define shaveVertexShader_h
// Shave and a Haircut
// (c) 2019 Epic Games
// US Patent 6720962

#include <maya/MDataBlock.h>
#include <maya/MDataHandle.h>
#include <maya/MFloatVector.h>
#include <maya/MPlug.h>
#include <maya/MPxNode.h>
#include <maya/MSceneMessage.h>
#include <maya/MTypeId.h>


class shaveVertexShader : public MPxNode
{
public:
								shaveVertexShader();
    virtual						~shaveVertexShader();

    virtual MStatus				compute(const MPlug&, MDataBlock&);
	virtual void				postConstructor();

#if MAYA_API_VERSION >= 201600
	virtual SchedulingType		schedulingType() const { return kUntrusted; }
#endif

    static void*				creator();
    static MStatus				initialize();

    static MTypeId				id;
	static const MString		nodeTypeName;

private:
	static inline float dotProduct(const MFloatVector&, const MFloatVector&); 

	// Input attributes

	static MObject	pointAttr;
	static MObject	surfaceIndexAttr;
	static MObject	objectIdAttr;
	static MObject	primitiveIdAttr;

	// Output attributes
	static MObject	outColorAttr;
	static MObject	outAlphaAttr;

	//
	// Local members.
	//
};


inline float shaveVertexShader::dotProduct(
	const MFloatVector& v1,
	const MFloatVector& v2
) 
{	return (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z);	}

#endif