L_HSVtoRGB
#include "l_bitmap.h"
L_LTDIS_API L_COLORREF L_HSVtoRGB(hsvColor)
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HSVREF hsvColor; |
/* HSV input value */ |
Returns a COLORREF value that is an equivalent representation of the specified HSV value.
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Parameter |
Description |
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hsvColor |
The HSV input value. |
Returns
An L_COLORREF that contains the RGB equivalent of the specified HSV value.
Comments
This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.
The HSV value is the Hue ,Saturation, Value color space. Traditionally, hue ranges from 0 to 359. However, the hue component of the HSVREF is represented by an unsigned byte. Therefore, the range of 0 to 359 is remapped to a range of 0..255. For example,
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Color |
Hue(0..359) |
Hue(0..255) |
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Red |
0 |
0 |
|
Green |
120 |
85 |
|
Blue |
240 |
170 |
Saturation ranges from 0 to 255 where 0 means the highest amount of white and 255 means no white.
Value ranges from 0 to 255 where 0 means highest amount of black and 255 means no black.
Required DLLs and Libraries
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LTDIS For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Platforms
Windows 2000 / XP/Vista, Windows CE.
See Also
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Functions: |
L_RemapBitmapHue, L_SetBitmapRgnColorHSVRange, L_SetBitmapRgnColorRGBRange, L_RGBtoHSV, L_SetBitmapRgnEllipse, L_SetBitmapRgnPolygon, L_SetBitmapRgnRect, L_SetBitmapRgnRoundRect |
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Example
//This example takes displays the H,S,V value of a HSVREF
//and the equivalent RGB components
L_INT HSVtoRGBExample(HSVREF hsvColor)
{
L_TCHAR szMsg[100];
COLORREF cr;
wsprintf(szMsg, TEXT("Hue[%d] Saturation[%d] Value[%d]\n"), hsvColor.uH, hsvColor.uS, hsvColor.uV);
MessageBox(NULL, szMsg, TEXT(""), MB_OK);
cr = L_HSVtoRGB(hsvColor);
wsprintf(szMsg, TEXT("R[%d] G[%d] B[%d]\n"), GetRValue(cr), GetBValue(cr), GetGValue(cr));
MessageBox(NULL, szMsg, TEXT(""), MB_OK);
return SUCCESS;
}