LVectorObject::IsObjectInsideParallelogram
#include "ltwrappr.h"
virtual L_INT LVectorObject::IsObjectInsideParallelogram(pLeftTop, pRightBottom, bInside)
const pVECTORPOINT pLeftTop; |
/* pointer to a vector point */ |
const pVECTORPOINT pRightBottom; |
/* pointer to a vector point */ |
L_BOOL *bInside; |
/* pointer to a variable */ |
Determines whether the class object is within the specified parallelogram.
Parameter |
Description |
|
pLeftTop |
Pointer to a VECTORPOINT structure that contains the top left point of a parallelogram. |
|
pRightBottom |
Pointer to a VECTORPOINT structure that contains the bottom right point of a parallelogram. |
|
bInside |
Pointer to a variable to be updated with a value that indicates whether the class object is inside the specified parallelogram. Possible values are: |
|
|
Value |
Meaning |
|
TRUE |
The class object is within the specified parallelogram. |
|
FALSE |
The class object is not within the specified parallelogram. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
This function determines whether the class object exists within the parallelogram specified by pLeftTop and pRightBottom. The parallelogram is given in logical units.
For this function, the current view port, pan position, camera, rotation, translation and scale do not effect the actual image position in 3D space.
Not supported in DirectX.
Required DLLs and Libraries
LVKRN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
See Also
Functions: |
LVectorObject::IsObjectInsideRect, LVectorObject::GetObjectParallelogram, LVectorObject::GetObjectRect |
Topics: |
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Example
This example selects all vertices inside a given parallelogram.
class LMyVectorBase: public LVectorBase { public: L_INT m_nObjectCount ; VECTORPOINT m_LeftTop, m_RightBottom; public: LMyVectorBase(); virtual ~LMyVectorBase() ; virtual L_INT EnumObjectsCallBack(pVECTORHANDLE pVector, pVECTOROBJECT pObject); }; LMyVectorBase::LMyVectorBase() { m_nObjectCount = 0 ; } LMyVectorBase::~LMyVectorBase() { } L_INT LMyVectorBase::EnumObjectsCallBack(pVECTORHANDLE pVector, pVECTOROBJECT pObject) { L_BOOL bInside; LVectorBase VectorBase(pVector); LVectorObject VectorObject(pObject, &VectorBase); //Select object if inside parallelogram VectorObject.IsObjectInsideParallelogram(&m_LeftTop,&m_RightBottom,&bInside); if (bInside) VectorObject.SelectObject(); return SUCCESS ; } L_INT LVectorObject__IsObjectInsideParallelogramExample(HWND hWnd) { UNREFERENCED_PARAMETER(hWnd); L_INT nRet; LMyVectorBase Vector; nRet = Vector.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\test.dxf")); if(nRet != SUCCESS) return nRet; //Define a 3D parallelogram Vector.m_LeftTop.x=0; Vector.m_LeftTop.y=0; Vector.m_LeftTop.z=0; Vector.m_RightBottom.x=50; Vector.m_RightBottom.y=50; Vector.m_RightBottom.z=50; return SUCCESS; }