Search found 5860 matches

by albert
Nov 11, 2009 0:54
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

I did a new formula and added my parabola formula in to it. the degrees are off a tiny bit. It still has 100 degrees in a quad and this one draws perfectly on the line. Dim As Double xctr,yctr,x,y,radius,deg,s,c,pion2 pion2=atn(1)*2 Screen 19 xctr = 305 yctr = 305 radius = 270 circle(xct...
by albert
Nov 10, 2009 21:59
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Hey Richard, I if you have a line in space at an angle, how do you calculate the position of the top of the line when all you know is the length and bottom position and angle.? is there a way to rewrite the chord formula to get position? @albert. That guy on Math4U was wrong. Chord length = Sqrt((a-...
by albert
Nov 08, 2009 15:20
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

The only way to get my formula working correctly is to adjust .0009 during the looping it needs to be .0005??? at one and .00090775?? at 100. What i did was figure out what number times half pi equaled 1 and then subtracted it from 100 and divided it by 200 twice. At 1 we need about .90 I'll modify ...
by albert
Nov 07, 2009 22:46
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Hey Richard check this out! My new formula matches yours almost perfectly. Pretty cool! I got the sine and cosine equal but opposite. It calculates the chord of grad * 2. To prove there are 100 grads in a quad just enter (step 33.3333) into Albert's new formula at the bottom. '' Albert's attempt at ...
by albert
Nov 07, 2009 16:27
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Richards circle formula.

Thanks Richard Your revised formula works pretty good.it almost perfect. Mine is a little off yet. In the mean time i revised mine and got closer to a perfect circle, i'm still using 100th of a quad though. or 100 grads(degrees). '' Albert's attempt at a 400 degree circle ... is the yellow line '' R...
by albert
Nov 07, 2009 0:32
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Hey Richard your circle only has 99.94 degrees in it it won't close when you step by 2 degree increments. I set it to step by pion/1 ?? and the atan2 function reports 99.94 degrees you need to dial the numbers in a little. '' Albert's attempt at a 400 degree circle ... is the yellow line '' Richard'...
by albert
Nov 06, 2009 19:08
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Newton came up with the power series formula and it states that there are 180 degrees in a half circle. (Cause thats all the formula accounts for.) the power series cannot do 200 degrees thats why there is only 180 degrees. a new formula that can do 200 degrees would change the status quo. you guys ...
by albert
Nov 06, 2009 3:02
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Richard you did it!!! You proved there are 100 units or degrees in a quater circle.!!!!!! Just divide pion2 by 100 and you get 100 perfectly spaced degrees. '' Albert's attempt at a 400 degree circle ... is the yellow line '' Richard's attempt at TwoPi radian circle ... is the pink line '' the refer...
by albert
Nov 05, 2009 15:46
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

I'm dialing it in slowly, 100 degrees per quarter. Its almost perfect. a little short around 80-90. '' Albert's attempt at a 400 degree circle dim as double deg,sine,cosine dim as double xctr,yctr,radius,x,y,holdx screen 19 xctr = 305 yctr = 305 radius = 300 circle(xctr,yctr),radius+1,9 x = ...
by albert
Nov 05, 2009 4:07
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

I made a new formula. Thinking there had to be 100 degfrees in a quarter circle. Its pretty close, some wide degrees low and high. The problem is it makes a squared circle. ???????? Got any input Richard? '' Albert's attempt at a 400 degree circle dim as double deg,sine,cosine dim as double xctr,yct...
by albert
Nov 04, 2009 17:28
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

al's circle formula.

there was a problem with the x center and ycenter in the above code. I corrected the xctr,yctr so now you can plot to any position on the screen. dim as double x,xctr,y,yctr,deg,offset,radius,size screen 19 xctr = 305 yctr = 305 radius = 300 offset = sqr(.5) size =(xctr + (offset*rad...
by albert
Nov 03, 2009 21:56
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

circle formula.

Hey Richard!!! I tried and pretty much succeeded this time. I thought my formula made pretty good quarter circles. So! I tested it to see and got almost perfect circles. Almost perfect! dim as double x,xctr,y,yctr,deg,offset,radius,size screen 19 xctr = 305 yctr = 305 radius = 300 offset = sqr(...
by albert
Nov 01, 2009 21:31
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

Thanks Richard , i just looked at the formula and realized that i did a : ( / deg * deg ) thnigy which can be taken out. you can also get the same thing by pi / 180 / ( ( 90 / deg / 90 ) + ????? ) I'll try your formula. your formula returns the same results as mine! what i'm testing against is: ( pi...
by albert
Nov 01, 2009 17:44
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

sine formula

my newest formula. the zoom is only set to 100 falls a little below around 30 degrees it only equals .499 instead of .5 not too bad for a single line formula! '--------------------------------------------------------- ' plot sine function and approximations '-----------------------------------------...
by albert
Oct 23, 2009 4:50
Forum: General
Topic: Circles
Replies: 1988
Views: 153810

sine formula

My newest formula is also a flop but its pretty close from 30-60 deg. ??? this code goes in to Richards sine plotter progam in this topic. 'albert's newest formula (thursday october 22 2009) ---- another failure, follows pretty close from 30 - 60 deg. dim as double value1,value2, value3,valu...

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