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.

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

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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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pavel

remix of d/23719 by u/rep_movsd

function u(t) {

for(Y=t%4*50,r=Y<27?Y:27,i=99;a=i--/32;x.fillRect(X+2*r*C(a),5*Y+r*S(a),3,5))x.fillStyle=`hsl(${h=r<9|r-Y?X=t/4<<7:42},${h}%,${42+C(a)*20}%`

Sep 1 2021 9:24 PM UTC

}// 140/140

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16-Color Pencils

u/tomxor

haha, beat me to it, i had the same idea to golf using t but you made it even better with colour tips!!
u/Xen

nice!

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danny@hille.dk

remix of d/23706 by u/danny@hille.dk

function u(t) {

w=c.width=99;for(i=6e3;i--;)x.fillRect(X=i%w,Y=i/w|0,r=((X-50)*S(t)+(Y-30)*C(t/3)*3^(Y-30)*S(t)-(X-50*S(t))*C(t/3)*3)/255,.5/r)

Aug 31 2021 3:35 PM UTC

}// 127/140

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fake bumpmap remix

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taupelink

remix of d/23666 by u/taupelink

function u(t) {

for(i=k=255;--i;x.fillRect(k*--X,630-i*Y,i*(q*q%t<t**-t),-q*Y*t))f=i*t,X=f*f%9,Y=S(X*f)*X,x.fillStyle=R(q=i*Y,q/=T(X/6)<Y?.9:-1.5,q^k,k/q/q)

Aug 29 2021 8:20 PM UTC

}// 140/140

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d/23688

u/aleamb

#impressionism

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rodrigo.siqueira

remix of d/23673 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
A=a=b=.8/t;s=920
for(i=1e4;--i;b=A,A=a)x.fillRect(940+a*s,540+b*s,.8,t<99),a=Math.abs(a/2+1/b/2e3)*(A/2+C(a-a/4))-b

Aug 29 2021 8:19 PM UTC

}// 140/140

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Glial astrocyte convergence

u/magna

Crazy!

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