like

		case TRACE_CONTOUR: {			size[0] -= 1.0;			size[1] -= 1.0;			size[2] -= 1.0;			/* trace periphery - prioritize plane centers, more chance of hitting */			VectorMA( boxOrigin, size[0]*-0.5, xAxis, p[k].pt ); k++;			VectorMA( boxOrigin, -size[0]*-0.5, xAxis, p[k].pt ); k++;			VectorMA( boxOrigin, size[1]*-0.5, yAxis, p[k].pt ); k++;			VectorMA( boxOrigin, -size[0]*-0.5, yAxis, p[k].pt ); k++;			VectorMA( boxOrigin, size[2]*-0.5, zAxis, p[k].pt ); k++;			/* corners */			VectorMA( boxOrigin, size[0]*-0.5, xAxis, p[k].pt );			VectorMA( p[k].pt, size[2]*-0.5, zAxis, p[k].pt );			k++;			VectorMA( boxOrigin, -size[0]*-0.5, xAxis, p[k].pt );			VectorMA( p[k].pt, size[2]*-0.5, zAxis, p[k].pt );			k++;			VectorMA( boxOrigin, size[1]*-0.5, yAxis, p[k].pt );			VectorMA( p[k].pt, size[2]*-0.5, zAxis, p[k].pt );			k++;			VectorMA( boxOrigin, -size[1]*-0.5, yAxis, p[k].pt );			VectorMA( p[k].pt, size[2]*-0.5, zAxis, p[k].pt );			k++;			for( k=4; k < maxTraces; k++ ){				VectorMA( boxOrigin, size[0]*crandom()*-0.5, xAxis, p[k].pt );				VectorMA( p[k].pt, size[1]*crandom()*-0.5, yAxis, p[k].pt );				VectorMA( p[k].pt, size[2]*crandom()*-0.5, zAxis, p[k].pt );			}			break;		}