Dweets awesomed by u/robbyg

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

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    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.

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pavel

function u(t) {

for(i=420;r=--i>>2;i&3||x.beginPath(x.fill()))x.fillStyle=`hsl(177,42%,${90-3*r}%`,x.arc(960,580,24*r,a=(i*2-.5+(~r%2|1)*C(t-r/9))/.9549,a)

Sep 8 2021 11:34 PM UTC

}// 139/140

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3x33 [A] by twitter.com/tequibo

u/rodrigo.siqueira

What is Pavel's Twitter account?
u/pavel

twitter.com/pavelbahilov I have plans to post but I don't currently

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pavel

function u(t) {

for(i=c.width|=t%=1,s=60*2**t,r=.71+.29*t;i--;x.fillRect(((i&60)+Y%2*2+r*C(a=.7854*(2*i+t-1))-t-.5)*s,(Y*2+r*S(a)-.5)*s,s,s))Y=i>>6

Sep 8 2021 6:43 PM UTC

}// 131/140

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Check this out

Show more comments…
u/UEZ

Looks very nice and smart coded. One noob question: which colors will be used in the loop by default when you don't use fillStyle? I saw many examples without fillStyle but the result is not monochrom. Thx.
u/rep_movsd

The default fill color and stroke color are black. Colors have to be set with fillStyle, strokeStyle or perhaps even setting the background (rare)
u/pavel

The default color for fill, fillRect, stroke, strokeRect is black and you need to call fillStyle or strokeStyle respectively. You must have seen other drawing techniques, maybe like putImage or using style attributes to add a filter over the B&W colors.
u/pavel

Haha looks like we answered at the same time and eerily similarly.
u/UEZ

Hmm, when I look to https://www.dwitter.net/d/23732 I cannot see any strokeStyle/fillStyle but the color result is greyscale.
u/pavel

Gray can be achieved by spacing out black pixels amongst white ones. d/23773 shows this clearest.

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ArthurThuczsec

remix of d/22683 by u/Xor

function u(t) {

x.fillRect(t*99,0,t/9,9e9)

Sep 6 2021 8:40 PM UTC

}// 26/140

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ArthurThuczsec

remix of d/7818 by u/Cistoran

function u(t) {

x.fillStyle="#1061"
for(x.fillRect(i=0,0,I=2e3,I);i<I;x.fillStyle=`hsl(${i/9} 99%60%`)x.fillRect(i+=4,540*S(t+i*(t/2|0))*3,20,30)

Sep 6 2021 7:56 PM UTC

}// 129/140

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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

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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!

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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

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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!

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rodrigo.siqueira

remix of d/23724 by u/taupelink

function u(t) {

for(i=k=630;--i;x.fillRect(X-k,k-i/Y,-Y*i/v,-q*Y/v))f=i*t,X=f*f%3e3,Y=i*f%12-4,x.fillStyle=R(q=i*Y,q*=S(t-k/X)*3,q/t,1e7/X/q/q),v=4*t*(t<9)

Sep 3 2021 8:45 PM UTC

}// 139/140

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Sailing boat at sunset #waitforit (in about 7 seconds the sailboat will appear)

u/tomxor

Wow! #waitforit #impressionist #sailing #boat
u/tomxor

#art
u/Joachim

stunning

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danny@hille.dk

remix of d/20135 by u/danny@hille.dk

function u(t) {

f=i=>S(t+y/255*C(t)+i*1.57)*120;for(y=c.width|=0;y--;)for(i=4;i--;)n=f(i),m=f(i+1),n<m&&x.fillRect(n+f(y/255)+940,y,k=m-n,(i%2?k:99-k)/120)

Sep 3 2021 12:37 PM UTC

}// 140/140

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Twisted metal remix #uncompressed

u/danny@hille.dk

This is a personal thing!!! Twister2d is one of my favorite old school effects, it's also one of the first things i tried to golf to fit into a dweet (and I failed miserably :-)) I have retried tried (and failed) a couple of times, but this is the first time i actually managed to get the damn thing to fit without compression. I had to scarifice colors to maintin an interesting animation. Perhaps I'll get it next time :-) #twister #twister2d
u/New_Core

it look great...
u/DataMeta

beautiful #grayscale

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danny@hille.dk

remix of d/23599 by u/danny@hille.dk

function u(t) {

c.width=w=92;for(i=6e3;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w*5&w^w*a*2+w+t*w&w))/w,.7/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-.4+i/7e3)

Sep 2 2021 3:45 PM UTC

}// 139/140

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uncompressed tunnel remix

u/tomxor

Interesting an-anisitropic event horizon in the middle :P
u/danny@hille.dk

:P I couldn't fit the code to darken by depth...
u/danny@hille.dk

heres another interesting rendition c.width=w=127;for(i=1e4;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w&w^w*a+w-t/5*w&w))/w,.5/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-i/-9e3)
u/danny@hille.dk

#tunnel

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taupelink

remix of d/23714 by u/taupelink

function u(t) {

for(i=k=630;--i;x.fillRect(X-k,k-i/Y,-Y*i/v,-q*Y/v))f=i*t,X=f*f%3e3,Y=X*f%9-4,x.fillStyle=R(q=i*Y,q*=S(k/X)*(.7-Y/6),i%q,1e7/X/q/q),v=4**t

Sep 2 2021 2:32 AM UTC

}// 138/140

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d/23724

u/Xen

love it!
u/rep_movsd

Gets better and better
u/tomxor

wow
u/aleamb

beautiful! #impressionism

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