LVectorBase::IsObjectInsideParallelogram
#include "ltwrappr.h"
virtual L_INT LVectorBase::IsObjectInsideParallelogram(pLeftTop, pRightBottom, bInside, dwFlags=0)
const pVECTORPOINT pLeftTop; |
/* pointer to a vector point */ |
const pVECTORPOINT pRightBottom; |
/* pointer to a vector point */ |
L_BOOL *bInside; |
/* pointer to a variable */ |
L_UINT32 dwFlags; |
/* flags */ |
Determines whether the specified object(s) is(are) 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 object is inside the specified parallelogram. Possible values are: |
|
|
Value |
Meaning |
|
TRUE |
The specified object is within the specified parallelogram. |
|
FALSE |
The specified object is not within the specified parallelogram. |
dwFlags |
Flag that indicates which object(s) to test. This flag is valid only if pObject is NULL. If pObject is not NULL, this parameter is ignored. Possible values are: |
|
|
Value |
Meaning |
|
0 |
Test all objects in the vector handle to determine whether they are in the specified parallelogram. |
|
VECTOR_FLAGS_SELECTED_ONLY |
Test only the selected objects within the vector handle. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
This function determines whether the specified object(s) 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: |
LVectorBase::IsObjectInsideRect, LVectorBase::GetObjectParallelogram, LVectorBase::GetObjectRect, LVectorObject::IsObjectInsideParallelogram |
Topics: |
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Example
This example displays tests if all vector objects are inside a parallelogram.
L_INT LVectorBase__IsObjectInsideParallelogramExample(HWND hWnd, LVectorBase *pVector) { UNREFERENCED_PARAMETER(pVector); L_INT nRet; LVectorBase Vector; VECTORPOINT min, max; L_BOOL bInside; nRet = Vector.Load(TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\test.dxf")); if(nRet != SUCCESS) return nRet; nRet = Vector.GetParallelogram(&min, &max); if(nRet != SUCCESS) return nRet; //The vector should be inside of the parallelogram nRet = Vector.IsObjectInsideParallelogram(&min, &max, &bInside); if(nRet != SUCCESS) return nRet; if (bInside) MessageBox(hWnd, TEXT("IsObjectInsideParallelogram() returns TRUE"), TEXT(""), MB_OK); else MessageBox(hWnd, TEXT("IsObjectInsideParallelogram() returns FALSE"), TEXT(""), MB_OK); //Now reduce the size of the parallelogram--the vector is no longer inside max.x = (max.x - min.x) / 2; nRet = Vector.IsObjectInsideParallelogram(&min, &max, &bInside); if(nRet != SUCCESS) return nRet; if (bInside) MessageBox(hWnd, TEXT("IsObjectInsideParallelogram() returns TRUE"), TEXT(""), MB_OK); else MessageBox(hWnd, TEXT("IsObjectInsideParallelogram() returns FALSE"), TEXT(""), MB_OK); return SUCCESS; }