Dweets awesomed by u/rep_movsd

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

show FPS hide FPS share fullscreen

tactical_retard

remix of d/23621 by u/tactical_retard

function u(t) {

eval(unescape(escape`󡬽󫜽󟭭󙜲󟬱󟼨󫜥󜜭󛬵󚜪󜬺󚌱󚼭󫜥󜜭󛬵󚜪󜬊󬬽󚍍󟝍󨝴󪌩󛭲󨝮󩍯󫜊󩭯󬬨󪜽󨜽󜭥󜼻󪜭󛜻󣜮󨝢󬼨󦜭󝜰󜌫󡬨󦌯󦜩󚬵󜌰󚜾󝬰󚭴󙬦󚍸󛭦󪝬󫍒󩝣󭌨󦌬󦜬󜬰󛌲󜌩󚜩󦌽󬬨󚜪󨜬󦜽󬬨󮌮󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮼶󜌪󭍽󛌹󞜥󛌳󝜥󨌩󚭡`.replace(/u../g,'')))

Sep 7 2021 3:41 PM UTC

}// 129/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

better triangle wave function: F=m=>Math.abs(1-m%2)*2-1

show FPS hide FPS share 5 remixes fullscreen

taupelink

function u(t) {

k=120;for(i=k;i--;)
f=i*t,X=f*f%16,Y=X*f%9,
x.fillStyle=R(q=i*2,q*=1+S(X),q*=1-S(Y)),
x.fillRect(k*X,k*Y,k/5**t,i)

Sep 7 2021 2:03 PM UTC

}// 114/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

d/23806 figure 1

Show more comments…
u/taupelink

this week i will give a line-by-line description here in comments and then maybe in a blog post
u/taupelink

definitely a blog post. the comments will come over time...don't feel obligated to come back and check this dweet for new comments
u/taupelink

k=120: for code golfing purposes, this variable plays multiple roles: loop iteration count per frame, scale factor for X&Y coordinates, width of each rectangle at the start of the animation
u/taupelink

for(i=k;i--;): establishes a loop where i counts down from 120 to 1. "i--" means, If i is 0, then stop here; otherwise, decrement i by 1
u/taupelink

f=i*t,X=f*f%16,Y=X*f%9: this code creates quasi-random decimals X (0.0-15.999) and Y(0.0-8.999). (Hat-tip to whoever suggested this technique... u/pavel ?) If you multiply the upper bounds by 120 each, you get the overall dimensions 1920x1080.
u/taupelink

x.fillStyle=R(red,green,blue): sets the RGB color value for fills. I will take each component one at a time...
u/taupelink

q=i*2: sets the red component to 2x the loop index, i.e. an even number from 2 to 240. This covers most of the possible range 0-255. The red value is tied to i but not to X or Y; rectangles everywhere have a random degree of red.
u/taupelink

q*=1+S(X): sets the green component, and updates the value of q, to q*(1+sin(X)). Where sin(X) is close to -1, around X=1.5*pi and X=3.5*pi, the value of q is close to being zeroed out by this code; that explains the vertical red bands.
u/taupelink

q*=1-S(Y): sets the blue component, and updates the value of q, to q*(1-sin(Y)). This is why you see the green bands (no blue) around Y=0.5*pi and Y=2.5*pi; that's where sin(Y) is close to 1.
u/taupelink

x.fillRect(top,left,width,height): standard Javascript for drawing a rectangle. Again I will take one component at a time...
u/taupelink

k*X,k*Y: the X- and Y-coordinates of the upper left-hand corner of the rectangle, scaled by a factor of k.
u/taupelink

k/5**t: the width of the rectangle, which decreases exponentially over time. This can provide texture at different scales, including fine-grained detail.
u/taupelink

i: the height of the rectangle, equal to the index variable. The height of each rectangle is proportional to the red component, indeed to every component; so, for the 120 rectangles that are drawn in any given frame, some are tall and bright, some short and dark.
u/taupelink

A blog post on this dweet is up: https://medium.com/@taupelink/elements-of-a-…

show FPS hide FPS share fullscreen

pavel

remix of d/23765 by u/New_Core

function u(t) {

for(c.width|=i=w=640,t?x.font='5in"':r=new Date;j=--i>>4;x.fillText(String.fromCodePoint(127812+i%16),j*w-w,(r*j+i+9*p/(1+w**p))%16*w))p=t-j

Sep 7 2021 2:36 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

#slots

Show more comments…
u/pavel

Have to time it juust right :)
u/New_Core

nice
u/danny@hille.dk

Man - that is some next level golfing-fairy-dust you have used here :-)
u/pavel

Aw, its broken on iPhone, the font name trick doesn't seem to work.
u/anshu

rrr
u/lewdev

How? This is really cool.
u/joeytwiddle

I remember on some devices, fonts over a certain size just don't show. A workaround is to use a scale transform, or reduce the canvas size.

show FPS hide FPS share fullscreen

Tekmap

remix of d/7814 by u/SpecterPainter

function u(t) {

x.fillStyle="#3061"
x.fillRect(0,0,2e3,2e3)
for(i=-9;i<1900;x.fillStyle=`hsl(${i/9%214},99%,60%)`)
x.fillRect(i+=3,540*(1+T(t*i)/3),3,9)

Sep 6 2021 8:10 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/23749 by u/rodrigo.siqueira

function u(t) {

for(i=k=780;--i;x.fillRect(k-i*Y,k-v*i,80*q*X*v,Y*i*v))f=i*t,X=i*f%3-1,Y=X*f%4-2,x.fillStyle=R(q=i*X,q*=X*X/t,q*=Y**3*t*q/i/X,i/q/q),v=.5**t

Sep 6 2021 1:32 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

All the colors of a sunrise

u/taupelink

nice!
u/rep_movsd

Try swapping around the r, g and b values - b, g , r and g, r, r look pretty realistic
u/rodrigo.siqueira

u/rep_movsd please paste the colors (q=...?) that you found so I can try your suggested combinations, thanks!

show FPS hide FPS share fullscreen

robotman_

function u(t) {

for(c.width^=i=0;i<44*15;i++)x.fillRect(960+S(a=i+t*((f=0|(i/44))%2==(0|(t/4))%2?1:-1))*(r=80*f+20*(t%4)),540+C(a)*r,w=9+f,w)

Sep 6 2021 8:57 AM UTC

}// 125/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Hypnotizing circles

show FPS hide FPS share fullscreen

taupelink

remix of d/23760 by u/taupelink

function u(t) {

for(i=q=k=810;--i;x.fillRect(k*X,k-q*Y,-i/v,q*Y/v))f=i*t,X=f*f%5,Y=X*f%4-2,x.fillStyle=R(s=q+i*Y*.4,q^=-s,q^=255,(k+q)*(Y+3)**2/4e4),v=4**t

Sep 6 2021 6:21 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

d/23766

u/rep_movsd

You need to write a blog about this particular technique
u/taupelink

i'd like to, but it would take time (i'm a super slow writer) and it's honestly not a priority at the moment. I can at least say this: Part of how I get four vertical bands is having Y range from less than -1 to greater than 1 (in this case, -2 to 2). Multiplying or dividing by Y then has four effects: stretch or compress, do or do not reverse sign
u/rep_movsd

A one page breakdown would be nice, or perhaps I'll write one
u/taupelink

ah ok...like a line-by-line explanation? that's doable...i'll write something up next weekend!

show FPS hide FPS share 1 remix fullscreen

New_Core

function u(t) {

eval(unescape(escape`𭀿𜀺𚁡🐰𛁯👛𞀬𜠫𞐬𝀫𞑝𚐊𩡯𬠨𭰽𨰮𭱩𩁴𪁼👩🐳𝠬𮀮𩡯𫡴🐢𝑩𫠠𙰢𞱩𛐭𞰩𩀽嵮𚁩𛰳𚐬𮀮𩡩𫁬𥁥𮁴𚁓𭁲𪑮𩰮𩡲𫱭𠱯𩁥𤁯𪑮𭀨𜐲𝰸𜀸𚱤𙐹𚐬𪐥𜰪𝠰𜀬𡰽𩀪𝰰𜀭𚁩𙐳🁡🱯𦱩𙐳𧐪𛠳𝐸𞠨𭀼𫱛𨑝𚠮𜰵𞀿𭀺𨐫𚰩𚐪𭰥𝠳𜀰𚐻`.replace(/u../g,'')))

Sep 5 2021 11:23 PM UTC

}// 134/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Slot machine

u/New_Core

Its not random.. but you cam set the numbers in the array.. but.. if the number is lower then the number before you need to add +9 to it.. so 7, 4, 2 would be 7, 4+9, 2+18

show FPS hide FPS share fullscreen

tactical_retard

remix of d/23720 by u/tactical_retard

function u(t) {

eval(unescape(escape`󠬽󤼨󭌩󒭷󪝴󪌨󮌩󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮽴󚬳󝬰󯜬󞜹󙜬󝜰󙝠󛍳󩝴󥍲󨝮󬽦󫽲󫜨󠜽󠼨󭌩󛍄󟝔󚍁󚭂󚬳󚜬󛝄󛍁󛌹󝬰󛌵󝌰󚜬󬭥󬽥󭍔󬭡󫭳󩭯󬭭󚍦󪝬󫍒󩝣󭌨󛜲󝜬󛜲󝜬󝜰󛌵󜌩󚜬󩍲󨝷󢝭󨝧󩜨󨼬󛜱󝬬󛜹󛌱󞜵󜬬󜜰󞜸󚜻`.replace(/u../g,'')))

Sep 5 2021 8:45 PM UTC

}// 124/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

tomxor

remix of d/23756 by u/tomxor

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/480+.75&Y/480+.83&(X|Y)/16%15)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 8:28 PM UTC

}// 133/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Smolr #book of #sierpinski

u/tomxor

Someone's been drawing in the margins...
u/erin

magic

dwitter.net | rep_movsd (46906)