LAnnotation::GetScalarX
#include "ltwrappr.h"
virtual L_DOUBLE LAnnotation::GetScalarX(L_VOID)
Gets the horizontal scaling factor that is applied to the annotation object. This function is available in the Document/Medical Toolkits.
Returns
The horizontal scaling factor.
Comments
Typically, the scaling factors are applied to a root container so that the annotations will match the displayed image.
Offset values, which are set by the LAnnotation::SetOffsetX and LAnnotation::SetOffsetY functions, are applied after the scalar properties. For more information, refer to Low-Level Coordinate System for Annotations.
Required DLLs and Libraries
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LTANN 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
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Functions: |
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Topics: |
Annotation Functions: Getting and Setting Geometric Properties |
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Example
L_VOID TestScalar(LAnnotation& LeadAnn,LBitmapBase& LeadBitmap)
{
L_INT nXPercent, nYPercent; // X and Y scale percentage
L_DOUBLE dXScalar, dYScalar; // X and Y floating point scalars
L_TCHAR szMessage[80]; // Message buffer
RECT rClientArea ;
// Get the floating point scalars
dXScalar = LeadAnn.GetScalarX();
dYScalar = LeadAnn.GetScalarY();
// Convert the scalars to percentages
nXPercent = (L_INT)(dXScalar * 100);
nYPercent = (L_INT)(dYScalar * 100);
// Display the percentages in a message
wsprintf (szMessage, TEXT("%d percent X and %d percent Y"), nXPercent, nYPercent);
MessageBox (NULL, szMessage, TEXT("Notice"), MB_OK);
//...
//...
GetClientRect(LeadAnn.GetWnd(),&rClientArea);
LeadAnn.SetScalarX((L_DOUBLE) rClientArea.right / LeadBitmap.GetWidth());
LeadAnn.SetScalarY((L_DOUBLE) rClientArea.bottom / LeadBitmap.GetHeight());
//...
}