Hi,
I'm working on an Etoys project I call Pizza Pi. The idea is to calculate the value of Pi by randomly shooting blobs of tomato sauce at a pizza. The pizza is in a box. The radius if the pizza is one foot (or one anything) and just fits in the box. Given these simple dimensions, Pi can be calculated by the formula Pi = (blobsThatHitPizza * 4) / (blobsThatHitPizza + blobsThatMissPizza). The blobs that miss the pizza are confined to the box.
I am doing this with blobs of sauce that shoot toward the pizza box and then jump to a random spot in the box. The problem is that when I try to calculate this random spot the position of the box or the blob is not what I expect. If I grab a blob and move it to the bottom of the playfield its y position is -85? I have origin-at-center turned off in the playfield options, so I would expect the bottom edge of the playfield to be zero not -85.
I must be missing something, so can someone please clear this up for me. Thanks.
Lou ----------------------------------------------------------- Louis LaBrunda SkypeMe callto://PhotonDemon mailto:Lou@LaBrunda.Info http://www.LaBrunda.Info