1 typedef struct _geom_elem {
2 double coeffs[6];
3 } pGeomDefRec, *pGeomDefPtr;
4 typedef struct _mpgeombanddef {
5 int yOut;
6 int in_width;
7 } mpGeometryBandRec, *mpGeometryBandPtr;
8 typedef void *pointer;
9 typedef unsigned char CARD8;
10 typedef CARD8 BytePixel;
BiGL_B(OUTP,srcimg,width,sline,pedpvt,pvtband)11 void BiGL_B (OUTP,srcimg,width,sline,pedpvt,pvtband) pointer OUTP;
12 pointer *srcimg;
13 register int width;
14 int sline;
15 pGeomDefPtr pedpvt; mpGeometryBandPtr pvtband;
16 {
17 register float s, t, st;
18 register int isrcline,isrcpix;
19 register int srcwidth = pvtband->in_width - 1;
20 register BytePixel val;
21 register BytePixel *ptrIn, *ptrJn;
22 register double a = pedpvt->coeffs[0];
23 register double c = pedpvt->coeffs[2];
24 register double srcpix = a * ((double)(0.0000)) + pedpvt->coeffs[1] * (pvtband->yOut + ((double)(0.0000)) ) + pedpvt->coeffs[4];
25 register double srcline = c * ((double)(0.0000)) + pedpvt->coeffs[3] * (pvtband->yOut + ((double)(0.0000)) ) + pedpvt->coeffs[5];
26 if ( (isrcpix >= 0) && (isrcpix < srcwidth) )
27 val = ptrIn[isrcpix] * ((float)1. - s - t + st) + ptrIn[isrcpix+1] * (s - st) + ptrJn[isrcpix] * (t - st) + ptrJn[isrcpix+1] * (st) + (float)0.5 ;
28 }
29