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#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
/*
#define TRACE_PUT_RGBPIXEL
*/
#endif
/*
XW_STATUS Xw_put_rgbpixel (aimage,x,y,r,g,b,npixel):
XW_EXT_IMAGEDATA image *aimage
int x,y Pixel position
float r,g,b Pixel color index
int npixel Pixel number to fill with the same color index
Fill an existing IMAGE created by Xw_open_image with R,G,B values
returns XW_ERROR if Extended Image is not defined
or VISUAL Image class is not TRUECOLOR
or Pixel position is wrong (Outside of image)
returns XW_SUCCESS if successful
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_put_rgbpixel (void *aimage,int x,int y,float r,float g,float b,int npixel)
#else
XW_STATUS Xw_put_rgbpixel (aimage,x,y,r,g,b,npixel)
void *aimage ;
int x,y,npixel ;
float r,g,b ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_IMAGEDATA *pimage = (XW_EXT_IMAGEDATA*)aimage;
XW_EXT_COLORMAP *pcolormap = pimage->pcolormap;
union {
char *data ;
unsigned char *cdata ;
unsigned short *sdata ;
unsigned long *ldata ;
} data ;
int fpixel,lpixel,simage,index,isapproximate ;
register int np ;
unsigned long pixel ;
XImage *pximage;
if( !Xw_isdefine_image(pimage) ) {
/*ERROR*Bad EXT_IMAGEDATA Address*/
Xw_set_error(25,"Xw_put_rgbpixel",pimage) ;
return (XW_ERROR) ;
}
switch ( _CCLASS ) {
case TrueColor :
Xw_get_color_pixel(_ICOLORMAP,r,g,b,&pixel,&isapproximate) ;
break ;
case PseudoColor :
Xw_get_color_index(_ICOLORMAP,r,g,b,&index) ;
pixel = _ICOLORMAP->pixels[index] ;
break ;
default :
/*ERROR*Unimplemented Visual class*/
Xw_set_error(5,"Xw_put_rgbpixel",&_CCLASS) ;
return (XW_ERROR) ;
}
pximage = (_ZIMAGE) ? _ZIMAGE : _IIMAGE;
simage = pximage->height*pximage->width ;
fpixel = x*pximage->width + y ;
lpixel = fpixel + npixel - 1 ;
if( x < 0 || y < 0 || (lpixel >= simage) ) {
/*WARNING*Bad PIXEL position*/
Xw_set_error(47,"Xw_put_rgbpixel",&simage) ;
return (XW_ERROR) ;
}
switch (pximage->bitmap_pad) {
case 8 :
data.data = pximage->data + (fpixel) ;
for( np=npixel ; np ; --np )
*data.cdata++ = (unsigned char) pixel ;
break ;
case 16 :
data.data = pximage->data + (fpixel<<1) ;
for( np=npixel ; np ; --np )
*data.sdata++ = (unsigned short) pixel ;
break ;
case 32 :
data.data = pximage->data + (fpixel<<2) ;
for( np=npixel ; np ; --np )
*data.ldata++ = (unsigned long) pixel ;
}
#ifdef TRACE_PUT_RGBPIXEL
printf (" Xw_put_rgbpixel(%x,%d,%d,%f,%f,%f,%d)\n",
pimage,x,y,r,g,b,npixel) ;
#endif
return (XW_SUCCESS);
}
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