squareScaleManip.h

//-
// ==========================================================================
// Copyright 1995,2006,2008 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+

#include <maya/MTypeId.h>
#include <maya/MTypes.h>
#include <maya/MPxManipulatorNode.h>
#include <maya/MFnPlugin.h>
#include <maya/MObjectHandle.h>
#include <maya/MPxCommand.h>
#include <maya/MSyntax.h>
#include <maya/MDagModifier.h>

#include <maya/M3dView.h>
#include <maya/MGLFunctionTable.h>

#include "manipulatorMath.h"

//
// Custom manipulator class
//
class squareScaleManipulator : public MPxManipulatorNode
{
public:
    squareScaleManipulator();
    ~squareScaleManipulator();

    // The important virtuals to implement
    virtual void draw(M3dView &view, const MDagPath &path,
                M3dView::DisplayStyle style, M3dView::DisplayStatus status);

    virtual MStatus doPress( M3dView& view );
    virtual MStatus doDrag( M3dView& view );
    virtual MStatus doRelease( M3dView& view );

    // Utility method
    MStatus updateDragInformation();

    // Standard API required methods
    static void* creator();
    static MStatus initialize();

    // Node id
    static MTypeId id;

private:
    // GL component names for drawing and picking
    MGLuint topName, rightName, bottomName, leftName;
    // Simple class for plane creation, intersection
    planeMath plane;
    // Modified mouse position used for updating manipulator
    MPoint mousePointGlName;
};