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111
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1 typedef struct _geom_elem {
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2 double coeffs[6];
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3 } pGeomDefRec, *pGeomDefPtr;
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4 typedef struct _mpgeombanddef {
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5 int yOut;
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6 int in_width;
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7 } mpGeometryBandRec, *mpGeometryBandPtr;
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8 typedef void *pointer;
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9 typedef unsigned char CARD8;
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10 typedef CARD8 BytePixel;
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11 void BiGL_B (OUTP,srcimg,width,sline,pedpvt,pvtband) pointer OUTP;
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12 pointer *srcimg;
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13 register int width;
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14 int sline;
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15 pGeomDefPtr pedpvt; mpGeometryBandPtr pvtband;
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16 {
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17 register float s, t, st;
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18 register int isrcline,isrcpix;
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19 register int srcwidth = pvtband->in_width - 1;
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20 register BytePixel val;
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21 register BytePixel *ptrIn, *ptrJn;
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22 register double a = pedpvt->coeffs[0];
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23 register double c = pedpvt->coeffs[2];
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24 register double srcpix = a * ((double)(0.0000)) + pedpvt->coeffs[1] * (pvtband->yOut + ((double)(0.0000)) ) + pedpvt->coeffs[4];
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25 register double srcline = c * ((double)(0.0000)) + pedpvt->coeffs[3] * (pvtband->yOut + ((double)(0.0000)) ) + pedpvt->coeffs[5];
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26 if ( (isrcpix >= 0) && (isrcpix < srcwidth) )
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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 ;
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28 }
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