void envelope(int patch, float attack, float decay, moduleData *data)
{
	if(data->initflag[patch] == 0)
	{
		int i;
		float total, Nattack, Ndecay;
		data->initflag[patch] = 1;

		total = attack+decay;
		Nattack = (attack / total) * ENV_SIZE;
		Ndecay = ENV_SIZE - Nattack;

		//printf("\ntotal: %f\nNattack: %f\nNdecay: %f", total, Nattack, Ndecay);

		for(i = 0; i < ENV_SIZE; i++)
		{
			if(i < Nattack)
				data->envTable[patch][i] = i / Nattack;
			else
				data->envTable[patch][i] = (Ndecay - (i - Nattack)) / Ndecay;

			//printf("%d: %f\n", i, data->envTable[patch][i]);
		}

		data->envTable[patch][0] = 0;
		data->envTable[patch][ENV_SIZE] = 0;


		data->tempvar[patch] = ((1/total) * ENV_SIZE/SAMPLE_RATE);	//tempvar = table increment
		data->tableIndex[patch] = 0;
		data->tempout[patch] = .0001;
	}
			//printf("increment = %f", data->tempvar[patch]);

	data->tempout[patch] = data->envTable[patch][(int)data->tableIndex[patch]];
	data->tableIndex[patch] += data->tempvar[patch];
}