question: private void simpleNonCyclicFillRaster ( int pixels [ ] , int off , int adjust , int x , int y , int w , int h ) { float rowX = ( a00 * x ) + ( a01 * y ) + constA ; float rowY = ( a10 * x ) + ( a11 * y ) + constB ; float gDeltaDelta = this . gDeltaDelta ; adjust += w ; int rgbclip = gradient [ fastGradientArraySize ] ; for ( int j = 0 ; j < h ; j ++ ) { float gRel = ( rowX * rowX + rowY * rowY ) / radiusSq ; float gDelta = ( 2 * ( a00 * rowX + a10 * rowY ) / radiusSq + gDeltaDelta / 2 ) ; int i = 0 ; while ( i < w && gRel >= 1.0f ) { pixels [ off + i ] = rgbclip ; gRel += gDelta ; gDelta += gDeltaDelta ; i ++ ; } while ( i < w && gRel < 1.0f ) { int gIndex ; if ( gRel <= 0 ) { gIndex = 0 ; } else { float fIndex = gRel * SQRT_LUT_SIZE ; int iIndex = ( int ) ( fIndex ) ; float s0 = sqrtLut [ iIndex ] ; float s1 = sqrtLut [ iIndex + 1 ] - s0 ; fIndex = s0 + ( fIndex - iIndex ) * s1 ; gIndex = ( int ) ( fIndex * fastGradientArraySize ) ; } pixels [ off + i ] = gradient [ gIndex ] ; gRel += gDelta ; gDelta += gDeltaDelta ; i ++ ; } while ( i < w ) { pixels [ off + i ] = rgbclip ; i ++ ; } off += adjust ; rowX += a01 ; rowY += a11 ; } }
target:  This code works in the simplest of cases, where the focus == center point, the gradient is noncyclic, and the gradient lookup method is fast (single array index, no conversion necessary).