 | | Re: some 'puter/math help please
|
|
David, Check out Bresenham's Algorithm for line drawing: (URL) It's been around forever and does not require complex math - which was not available on older computers anyways. Sometimes the old guys knew how to do stuff right. Ralph (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | Re: some 'puter/math help please
|
|
(...) You mean like this? (URL) have that packaged up in a MyBlock, and other than rounding errors it works nice and fairly quickly. (...) Not exactly; it really depends on the precision you want/need. (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | Re: some 'puter/math help please
|
|
In lugnet.org.ca.rtltoronto, Rafe Donahue wrote: <snip> (...) I guess this is where pythagoras will factor in--I want the number of points to be the same as the length of the initial line (from random (x,y) to (0,0))--if the line is 17 units long, (...) (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | Re: some 'puter/math help please
|
|
In lugnet.org.ca.rtltoronto, Rafe Donahue wrote: <snip> (...) actually, that helps quite a bit! I thought I'd have to get pythagoras in the equatinos somehow, but htis is much easier! Much appreciated! (...) It'll be a wide range of starting points, (...) (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | Re: some 'puter/math help please
|
|
(...) The points on the line take the form y = mx + b, where b is the intercept with the y-axis and m is the slope. For the problem as you describe it, b is 0 since the line crosses the y-axis at zero, and m = 1.5 or 15/10 since the slope is the (...) (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | some 'puter/math help please
|
|
here's the scenario as best I can describe-- x and y co-ordinates line segment starts at (0,0), goes out to whatever--let's say (10,15) I want to make a dot follow the line segment from (10,15) down to (0,0) So the dot startes at (10,15), then moves (...) (18 years ago, 23-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | My geekiness continues...
|
|
In my ongoing quest to get all the sets I *wish* I had when I was a wee one... (Thankfully Jake found those space shuttles a few years back--that's still my personal fav. and i'm still very thankful I got one of those....) A few months back I got (...) (18 years ago, 20-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | back on line
|
|
for a short stint, i was not on line.... (YOu try finding a net connection in the burbs on a sunday at 9 pm) now, I am surfing with PPPoE Chris oh ya, lego. (18 years ago, 20-Mar-07, to lugnet.org.ca.rtltoronto)
|
| |
| | Re: NeXT-A-Sketch - My second program/first Dave-built NXT 'bot(ish...)
|
|
(...) Or do what I did. Change the program so you only have to tap the button to clear the screen so you can easily reset it while shaking upside down. (18 years ago, 15-Mar-07, to lugnet.org.ca.rtltoronto, lugnet.robotics.nxt)
|
| |
| | Re: My first(ish) program
|
|
(...) (URL) that I think you need to buy any more LEGO or anything... 8?) ROSCO (18 years ago, 14-Mar-07, to lugnet.org.ca.rtltoronto, lugnet.robotics.nxt)
|
