Реализация Функции точки захвата (grip) - часть 2

Если пользователь выбрал средний пункт{*точку*} власти{*захвата*}, многоугольник просто оттранслирован количеством, равняются смещению (это значение пропускают к transformBy () функция, как показано здесь).

Acad::ErrorStatus

AsdkPoly::getGripPoints(

AcGePoint3dArray& gripPoints,

AcDbIntArray& osnapModes,

AcDbIntArray& geomIds) const

{

assertReadEnabled();

Acad::ErrorStatus es;

if ((es = getVertices3d(gripPoints)) != Acad::eOk) {

return es;

}

// Remove the duplicate point at the start/end and add

// center as the last point.

//

gripPoints.removeAt(gripPoints.length() - 1);

AcGePoint3d center;

getCenter(center);

gripPoints.append(center);

return es;

}

Acad::ErrorStatus

AsdkPoly::moveGripPointsAt(

const AcDbIntArray& indices,

const AcGeVector3d& offset)

{

if (indices.length()== 0 || offset.isZeroLength())

return Acad::eOk; //that’s easy :-)

if (mDragDataFlags & kCloneMeForDraggingCalled) {

mDragDataFlags &= kUseDragCache;

// We need to make sure that all the poly’s drag data members

// are in sync with the true data members.

//

//mDragCenter = mCenter;

//mDragStartPoint = mStartPoint;

} else

// Only if we’re not dragging do we want to make an undo

// recording and check if the object’s open for write.

//

assertWriteEnabled();

//if there’s more than one hot vertex or there's one and it is

//the center then simply transform.

if (indices.length()>1 || indices[0] == mNumSides)

return transformBy(AcGeMatrix3d::translation(offset));

AcGeVector3d off(offset);

// Calculate the offset vector of the startpoint

// from the offset vector on a vertex.

double rotateBy = 2.0 * 3.14159265358979323846 /

mNumSides * indices[0];

AcGePoint3d cent;

getCenter(cent);

off.transformBy(AcGeMatrix3d::rotation(rotateBy,

normal(),cent));

acdbWcs2Ecs(asDblArray(off),asDblArray(off),

asDblArray(normal()),Adesk::kTrue);

if (mDragDataFlags & kUseDragCache){

mDragStartPoint = mStartPoint + AcGeVector2d(off.x,off.y);

mDragElevation = mElevation + off.z;

} else{

mStartPoint = mStartPoint + AcGeVector2d(off.x,off.y);

mElevation = mElevation + off.z;

}

return Acad::eOk;

}

Содержание  Назад  Вперед

---

---

---

---