lineManipContainer/lineManipContainer.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/MPxManipContainer.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"

//
// Manipulator class
//
class lineManip : public MPxManipulatorNode
{
public:
    lineManip();
    ~lineManip() override;
    void postConstructor() override;

    // Important virtuals to implement
    MStatus doPress( M3dView& view ) override;
    MStatus doDrag( M3dView& view ) override;
    MStatus doRelease( M3dView& view ) override;

    void preDrawUI( const M3dView &view ) override;
    void drawUI(
        MHWRender::MUIDrawManager& drawManager,
        const MHWRender::MFrameContext& frameContext ) const override;

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

    // Utility method
    MStatus updateDragInformation();

    // Node id
    static MTypeId id;

    // Manipulator changes behaviour based on the setting
    // of these two booleans
    bool affectScale;
    bool affectTranslate;

private:
    bool fDrawManip;
    MPoint fLineStart, fLineEnd;
    // GL component name used for drawing and picking
    MGLuint lineName;
    // Simple plane math class
    planeMath plane;
    // Modified mouse position
    MPoint mousePointGlName;

private:
    void getManipLinePos(float* top, float* bottom);
};

//
// Manipulator container which will hold two lineManip nodes
//
class lineManipContainer : public MPxManipContainer
{
public:
    lineManipContainer();
    ~lineManipContainer() override;

    // Important virtuals to implement
    MStatus createChildren() override;
    MStatus connectToDependNode(const MObject & node) override;

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

    // Node id
    static MTypeId id;
};