topic Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En in ObjectARX Forum

How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom Entity

Anonymous — Mon, 08 Oct 2018 13:32:29 GMT

Dear Friends,

We are now developing new project for Custom Entity Process in ACAD-18.

We are using VC++ and ObjectARX for developing this project.

In this project have need to modify grip point shapes from square to Flip Shape(Down Arrow) like as below snap.

Please note: This Grip Point was already customized.

We does not have any idea about that so i need your idea.

So we need your help to modify grip point shape like above snap, Kindly help to me for solve this problem.

I will wait for your replay.

With Regards,

Vicky.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Tue, 09 Oct 2018 12:19:58 GMT

When you already have implemented a custom entity with grips you should have implemented your own version of

virtual AcDbEntity::subGetGripPoints(). This virtual method is available in two forms:

virtual Acad::ErrorStatus subGetGripPoints(
    AcGePoint3dArray& gripPoints, AcDbIntArray & osnapModes, AcDbIntArray & geomIds
) const;

and

virtual Acad::ErrorStatus subGetGripPoints(
    AcDbGripDataPtrArray& grips,
    const double curViewUnitSize,
    const int gripSize,
    const AcGeVector3d& curViewDir,
    const int bitflags
) const;

Use the 2nd form with AcDbGripDataPtrArray& and fill grips with AcDbGripData pointers created with

pGripData = new AcDbGripData(). Set your customized draw functions using:

    pGripData->setWorldDraw(myGripWorldDraw);
   pGripData->setViewportDraw(myGripViewportDraw);
   pGripData->setToolTipFunc(myGripToolTip);
   pGripData->setHotGripFunc(myHotGripFunc);
   pGripData->setHoverFunc(myHoverFunc);
   pGripData->setHoverDimensionFunc(myGripDimension);

There is also a similiar method for grip overrules: AcDbGripOverrule::getGripPoints() if you prefer to use overrules.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

Anonymous — Wed, 10 Oct 2018 10:18:29 GMT

Dear Brammer,

Thanks for your reply.

I am sorry to say that I was used your method and try to find solution, but solution was not occur.

Because i try to modify data below operation but i don't know about it and how to modify data.

pGripData->setWorldDraw(myGripWorldDraw);
pGripData->setViewportDraw(myGripViewportDraw);
pGripData->setToolTipFunc(myGripToolTip);
pGripData->setHotGripFunc(myHotGripFunc);
pGripData->setHoverFunc(myHoverFunc);
pGripData->setHoverDimensionFunc(myGripDimension);

I want only to known details about How to modify data from below.

myGripWorldDraw

myGripViewportDraw

myGripToolTip

myHotGripFunc

myHoverFunc

myGripDimension

Is it possible please explain with sample coding for that.

please check below coding i think i have made some mistake on this coding please guide me.

AcDbGripData * pGripData = new AcDbGripData();
pGripData->setAppData(new MyGripAppData(i));
pGripData->setGripPoint(pt);
pGripData->disableRubberBandLine(true);
GripOpStatusPtr pTemp2 = pGripData->gripOpStatFunc();
AcDbGripOperations::GripStatus* test = (AcDbGripOperations::GripStatus*)(pTemp2);
GripToolTipPtr pToolTip = pGripData->toolTipFunc();
GripOperationPtr pOper= pGripData->hotGripFunc();
const AcDbObjectId* objId = (AcDbObjectId*)pOper;
GripWorldDrawPtr pWorld= pGripData->worldDraw();
AcGiWorldDraw* pTest=(AcGiWorldDraw*)(pWorld);

pGripData->setGripOpStatFunc(pTemp2);
pGripData->setHotGripFunc(pOper);
grips.append(pGripData);

I am wait for your reply.

Thanks & Regards,

Vicky.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Wed, 10 Oct 2018 10:23:37 GMT

I want only to known details about How to modify data from below.

myGripWorldDraw

myGripViewportDraw

myGripToolTip

myHotGripFunc

myHoverFunc

myGripDimension

Is it possible please explain with sample coding for that.

Have a look at the header <arx>\inc\dbgrip.h.

You'll find void AcDbGripData::setWorldDraw(GripWorldDrawPtr pFunc);

and the typedef for GripWorldDrawPtr

typedef bool (*GripWorldDrawPtr)(AcDbGripData* pThis, AcGiWorldDraw* pWd,
const AcDbObjectId& entId, AcDbGripOperations::DrawType type,
AcGePoint3d* imageGripPoint, double dGripSize);

So GripWorldDrawPtr is a "function pointer". What you have to do is write your own drawing function:

bool myGripWorldDraw(AcDbGripData* pThis, AcGiWorldDraw* pWd,

const AcDbObjectId& entId, AcDbGripOperations::DrawType type,
AcGePoint3d* imageGripPoint, double dGripSize) { ... }

which draws the arrow you want to see according to the grip data. Than set this function pointer to the grip data:

pGripData->setWorldDraw(myGripWorldDraw);

AutoCAD will call your myGripWorldDraw() whenever a grip is rendered.

Hope this helps. Sorry - I can't give you much more detailled advice or sample code at this point.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

Anonymous — Wed, 10 Oct 2018 12:03:38 GMT

Dear Brammer,

Thanks for your quick reply.
We understand your reply.

I say sorry for repeat ask this question about this case.I could not have known details about Grip point edit operation on before so i have more doubts.
I was modified and test it.Ref below coding.

bool myGripWorldDraw(AcDbGripData* pThis, AcGiWorldDraw* pWd,const AcDbObjectId& entId, AcDbGripOperations::DrawType type,AcGePoint3d* imageGripPoint, double dGripSize)
{
type = AcDbGripOperations::DrawType::kHotGrip;
dGripSize = 5;
return true;
}

void myGripOpStatusPtr(AcDbGripData* pThis, const AcDbObjectId& entId, AcDbGripOperations::GripStatus entStatus)
{
entStatus = AcDbGripOperations::GripStatus::kMirror;
}

Acad::ErrorStatus AdskCustomEntity::subGetGripPoints(AcDbGripDataPtrArray &grips, const double curViewUnitSize, const int gripSize, const AcGeVector3d &curViewDir, const int bitflags) const
{
assertReadEnabled();

if (m_pPolyLine)
{
AcGePoint3dArray ptsPolyLine;
Adesk::UInt32 numVerts = m_pPolyLine->numVerts();
for (int i = 0; i < numVerts; i++)
{
AcGePoint3d pt;
m_pPolyLine->getPointAt(i, pt);
ptsPolyLine.append(pt);
AcDbGripData * pGripData = new AcDbGripData();
pGripData->setAppData(new MyGripAppData(i));
pGripData->setGripPoint(pt);
pGripData->disableRubberBandLine(true);
pGripData->setWorldDraw(myGripWorldDraw);
pGripData->setGripOpStatFunc(myGripOpStatusPtr);
grips.append(pGripData);
}
}
return Acad::eOk;
}

New Doubt:

AcDbGripOperations::GripStatus::kMirror;

I understand if we change as Grip status as kRotate then Grip point shapes change as Rotate icon.

This is correct or not?(Yes/No)

If No

Please explain step to change grip shapes like First show snap(Down Arrow).

End If

After that add this coding Grip point was not visible on database.

I need to change shape of grip point.

Please help me solve this problem.

Thanks and Regards,

Vicky.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Wed, 10 Oct 2018 12:08:10 GMT

Your function

bool myGripWorldDraw(AcDbGripData* pThis, AcGiWorldDraw* pWd,const AcDbObjectId& entId, AcDbGripOperations::DrawType type,AcGePoint3d* imageGripPoint, double dGripSize)
{
     type = AcDbGripOperations::DrawType::kHotGrip;
     dGripSize = 5;
     return true;
}

has to draw the grips. In your custom entity class you have implemented

Adesk::Boolean MyEntity::subWorldDraw(AcGiWorldDraw *pWd)

to draw your custom entity using pd.

In a similiar way you have to add code that draws graphics into pWd using the provided data.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Wed, 10 Oct 2018 12:22:47 GMT

New Doubt:

AcDbGripOperations::GripStatus::kMirror;

I understand if we change as Grip status as kRotate then Grip point shapes change as Rotate icon.

This is correct or not?(Yes/No)

I don't know - yet. Sorry.

Next week I have to implement grips with similiar features (arrows, mirror left/right). I'll share my knowledge than.

The enum AcDbGripOperations::GripStatus is used in the GripOpStatusPtr callback function. But I have no idea what might trigger a call with kMirror.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

Anonymous — Wed, 10 Oct 2018 12:34:35 GMT

Dear Brammer,

Thanks for your quick reply.
Sorry to say i was already use this function on my project Ref below coding.

All the below function are used on this project

virtual Adesk::Boolean subWorldDraw(AcGiWorldDraw *mode);

virtual Acad::ErrorStatus subTransformBy(const AcGeMatrix3d& xform);

Acad::ErrorStatus dwgInFields(AcDbDwgFiler *pFiler);

Acad::ErrorStatus dwgOutFields(AcDbDwgFiler *pFiler) const;

virtual Acad::ErrorStatus subGetGripPoints(AcDbGripDataPtrArray &grips, const double curViewUnitSize, const int gripSize, const AcGeVector3d &curViewDir, const int bitflags) const;

virtual Acad::ErrorStatus subMoveGripPointsAt(const AcDbVoidPtrArray& gripAppData, const AcGeVector3d& offset, const int bitflags);

Coding

Adesk::Boolean AdskCustomEntity::subWorldDraw(AcGiWorldDraw *mode)
{
assertReadEnabled();
if (m_pPolyLine)
{
m_pPolyLine->transformBy(matrix);
mode->geometry().draw(m_pPolyLine);
matrix= AcGeMatrix3d::kIdentity;
}
return (AcDbEntity::subWorldDraw(mode));
}

>to draw your custom entity using pd
Sorry i don't know pd.

Thanks & Regards,

Vicky.

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Wed, 10 Oct 2018 12:38:19 GMT

I meant pWd. Sorry for the typo. It is the 2nd parameter of

myGripWorldDraw(AcDbGripData* pThis, AcGiWorldDraw* pWd,...)

Re: How to Modify Grip Point Shape From Square to Flip(Down Arrow) for Custom En

tbrammer — Thu, 15 Nov 2018 12:17:28 GMT

I stated about on month ago that I will have to implement grips with dynamic dimensions.

Things took longer than I expected and I ran into different problems. So I asked the Autodesk Developer Support for help. They sent me a sample project for AutoCAD 2019. I have attached it. Hopefully it is helpful for those who are looking for dynamic dimension samples. It implements

Two simple custom entities with support dynamic dimension in their grips by implementing subGetGripPoints(AcDbGripDataPtrArray& grips,...)
Jigs for these entities that support dynamic dimensions:
Command RECTJIG creates a custom rectangle and CIRCLEGRIP creates a custom circle via jig.

The Jigs can be configured with the command SETDYNDIMMODES. It changes three options:

1. Options for the RectJig(Horizontal Dimension) are:

2. Options for the RectJig(Vertcial Dimension) are:

3. Options for the CircleJig(Radius Dimension) are: (for command CIRCLEGRIP)

Look at the texts at the commandline! You have to end your configuration for each option by hitting <ESC>.

These setting affect the jigs only - not the grips! Their behaviour is defined in AcRectangle::gripDimensionCbackFuncGuts(). In the original version the dimensions are not editable. If you want editable dynamic dimensions, you have to change the code:

dimData1->setDimEditable(true); ... dimData2->setDimEditable(true)

Currently I only have AutoCAD 2018 so I ported it to 2018.

Aside of the usual changes (ObjectARX path, change libnames from *23.lib to *22.lib, change Toolset to VS2015,...) I had to add #include <windows.h> at the beginning of each .cpp.

I tested with the command RECTJIG