LEADTOOLS Raster Imaging C DLL Help
| LEADTOOLS Raster Imaging C DLL Help > LEADTOOLS Raster Imaging Features > Annotations > Used Structures > ANNSMARTDISTANCE |
typedef struct tagANNSMARTDISTANCE
{
L_UINT uStructSize;
L_DOUBLE dDistance;
L_UINT uRulerUnit;
L_UINT uSmartUnit;
} ANNSMARTDISTANCE, *pANNSMARTDISTANCE;
The ANNSMARTDISTANCE contains information about the unit to be used for a ruler.
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Member |
Description |
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uStructSize |
Size of this structure. Use sizeof(ANNSMARTDISTANCE) |
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dDistance |
Distance in appropriate units. The field uSmartUnit identifies the unit. |
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uRulerUnit |
Value that specifies the type of measurement. Can be any one of the following constants: |
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Value |
Meaning |
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ANNUNIT_INCHES |
[0] Inches. |
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ANNUNIT_FEET |
[1] Feet. |
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ANNUNIT_YARDS |
[2] Yards. |
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ANNUNIT_MICROMETERS |
[3] Micrometers. |
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ANNUNIT_MILLIMETERS |
[4] Millimeters. |
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ANNUNIT_CENTIMETERS |
[5] Centimeters. |
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ANNUNIT_METERS |
[6] Meters. |
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ANNUNIT_TWIPS |
[7] Twips. |
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ANNUNIT_POINTS |
[8] Points. |
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ANNUNIT_PIXELS |
[9] Pixels. |
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ANNUNIT_SMART_METRIC |
[10] Smart Metric. |
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ANNUNIT_SMART_ENGLISH |
[11] Smart English. |
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If uRulerUnit is ANNUNIT_SMART_METRIC or ANNUNIT_SMART_ENGLISH, then the actual units can be found in the uSmartUnit member. If uRulerUnit is not one ANNUNIT_SMART_METRIC or ANNUNIT_SMART_ENGLISH, then uRulerUnit contains the unit constant. |
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uSmartUnit |
Value that specifies the base unit of measure. Always contains the unit constant. This can be any of the ANNUNIT_XXX constants EXCEPT ANNUNIT_SMART_METRIC or ANNUNIT_SMART_ENGLISH. |
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Comments
A "smart unit" is a unit that can be automatically promoted to the next higher unit. For example, suppose you have a ruler that is 13 inches long. If the units of the ruler are ANNUNIT_INCHES, then the length is 13. However, if the units of the ruler are ANNUNIT_SMART_ENGLISH, then the length of the ruler is automatically promoted to feet. The length in this case would be 1.0833 feet.
For more information, see the documentation for L_AnnGetDistance2.
See Also
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Functions: |
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Topics: |
