// nFrom and nTo are inclusive index (0 offset) to integrate, nTo = -1 to integrate to the end
bool integrate(curvebase& cuv, IntegrationResult& result, int nFrom = 0, int nTo = -1)
{
	if(0 == nFrom && -1 == nTo)
		return Curve_integrate(&cuv, &result);
	
	// if range specified, must make local copy
	// to ensure that the original range is not modified
	int nNumMissingInCopy, nSrcOffset;
	Curve cc(cuv, nNumMissingInCopy, nSrcOffset, 						
		CURVECOPY_SCAN_OVER_MISSING_FROM_LEFT | CURVECOPY_SCAN_OVER_MISSING_FROM_RIGHT | CURVECOPY_SKIP_MISSING_INSIDE,
		nFrom, nTo); 
		
	return Curve_integrate(&cc, &result);
}


void test(int i1, int i2)
{
	IntegrationResult aa;
	if(integrate(Project.ActiveCurveBase(), aa, i1, i2))
	{
		printf("From %f to %f, area = %f\n", aa.x1, aa.x2, aa.Area);
	}
}