SHPComputeExtents()

void SHPAPI_CALL SHPComputeExtents

(

SHPObject *

psObject

)

Definition at line 999 of file shpopen.c.

References bHasZ, SHPObject::dfMMax, SHPObject::dfMMin, SHPObject::dfXMax, SHPObject::dfXMin, SHPObject::dfYMax, SHPObject::dfYMin, SHPObject::dfZMax, SHPObject::dfZMin, MAX, MIN, nShapeId, nSHPType, SHPObject::nVertices, nVertices, SHPObject::padfM, SHPObject::padfX, SHPObject::padfY, SHPObject::padfZ, SHPAPI_CALL1, and SHPCreateObject().

{
    int         i;

/* -------------------------------------------------------------------- */
/*      Build extents for this object.                                  */
/* -------------------------------------------------------------------- */
    if( psObject->nVertices > 0 )
    {
        psObject->dfXMin = psObject->dfXMax = psObject->padfX[0];
        psObject->dfYMin = psObject->dfYMax = psObject->padfY[0];
        psObject->dfZMin = psObject->dfZMax = psObject->padfZ[0];
        psObject->dfMMin = psObject->dfMMax = psObject->padfM[0];
    }

    for( i = 0; i < psObject->nVertices; i++ )
    {
        psObject->dfXMin = MIN(psObject->dfXMin, psObject->padfX[i]);
        psObject->dfYMin = MIN(psObject->dfYMin, psObject->padfY[i]);
        psObject->dfZMin = MIN(psObject->dfZMin, psObject->padfZ[i]);
        psObject->dfMMin = MIN(psObject->dfMMin, psObject->padfM[i]);

        psObject->dfXMax = MAX(psObject->dfXMax, psObject->padfX[i]);
        psObject->dfYMax = MAX(psObject->dfYMax, psObject->padfY[i]);
        psObject->dfZMax = MAX(psObject->dfZMax, psObject->padfZ[i]);
        psObject->dfMMax = MAX(psObject->dfMMax, psObject->padfM[i]);
    }
}

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