New #Physics dweets

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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tactical_retard

function u(t) {

x.font="3em'"
Y=(M=Math).abs(S(t*4)*((a=(1080-50-frame**1.2))>0?a:0))
X=M.abs(2e3-t*800)


//made you look
x.fillText(c.a,X,c.height-(Y+50))

Aug 22 2021 8:54 PM UTC

}// 140/140

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bouncing ball #physics

u/TGY

LOL, got me)

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tomxor

remix of d/23413 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𜀻𪐭𛐻𪰽𤰦𤠼𝐿𛠱𜠵𛑒𛰴𜀺𜀬𥐭👫𚡡𛁖𛐽𪰪𨠩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛁓𯁒🀵𚐬𤰽𥀨𥀨𠰨𦀯𜐰𚐪𠰨𦐯𞐫𭀩𚐩🁙𛰹𛐳𚰳𚡃𚁴𚐬𤠽𣑡𭁨𛡨𮑰𫱴𚁡👘𛑁𛁢👙𛑂𚐻𠐫👕𚱷𛁂𚰽𥠪🐮𞐬𠐥👷𛁖𚰽𛠱`.replace(/u../g,'')))

Jul 28 2021 12:57 AM UTC

}// 140/140

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"This Thing" Capturing a Marble #Physics

u/magna

!!!
u/katkip

OMG

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𚁁👂🐸𛁕👖🐰𚐻𪐭𛐻𪰽𥀦𤠼𝐿𛠲𝐭𤠯𜠰𞠰𛁕𛐽𪰪𨐬𥠭👫𚡢𚑸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𥁼𤠼𝐩𛁔👓𚁘𛰶𚐫𠰨𦐯𝠩𚱙𛰶🠸𛁒👍𨑴𪀮𪁹𬁯𭀨𨐽𦀭𠐬𨠽𦐭𠠩𞱁𚰽𥐬𠠫👖𛁁𚰽𭰬𠐥👷𛁖𚰽𛠱𜠵`.replace(/u../g,'')))

Jul 28 2021 12:08 AM UTC

}// 134/140

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Impossible Marble #Physics

u/tomxor

Inspired by d/23398. Uses raster/2d-voxel based intersection
u/Xen

love it!
u/magna

HOW?!
u/katkip

how
u/tomxor

It's particle physics, but the collisions are with implicit volumes. So rather than checking against a specific object, each pixel is intersected with the circle, if the pixel is filled and intersects, then it contributes velocity to the particle along the collision normal (the vector between the pixel and the point), the deeper the intersection based on the radius the greater the contribution... this is not correct at all and creates lots of phantom momentum, but is very simple and shares the code with drawining the screen.

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KilledByAPixel

function u(t) {

eval(unescape(escape`󥌼󜭥󜼿󨼮󭽩󩍴󪍼󟜰󞭘󟝓󚍴󛍕󟝖󟝔󟜰󚜪󜼰󜌫󜝥󜼊󮌮󩭯󫭴󟜧󝝩󫬢󙼊󩭯󬬨󪼽󞜴󞽫󛜭󞼨󫌽󚍁󛜽󦌩󚭁󚼨󠬭󟝔󚜪󠬩󟌳󩜳󙬦󚍕󛜽󚍱󟜲󛬲󚬨󥜪󠜫󥬪󠬩󛽬󚜪󠜬󥬭󟝱󚭂󚜩󮌮󩭩󫍬󥍥󮍴󚌧󛬧󛌮󛬮󪼿󦽁󟝫󚬲󜜱󙜲󩜳󛍂󟝫󚬱󜭝󞭛󦌫󟝕󚬽󛬹󝜬󥌫󟝖󟜱󚽖󚬮󞜵󧜩`.replace(/u../g,'')))

Jul 26 2021 3:33 AM UTC

}// 140/140

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Plink! ⚫ #physics

u/Xen

love it!
u/DataMeta

ahh this is great!!
u/vain

what?? unbelievable! great work
u/KilledByAPixel

#bounce

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jellyedwards

remix of d/17854 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󤬽󤼨󭌩󚬪󜬪󜼵󜌊󨼮󭽩󩍴󪍼󟝺󟜲󝜊󩬽󚍘󛍚󚜽󟭸󛭦󪝬󫍒󩝣󭌨󦌪󮬫󦬪󞜬󦬪󮬫󣝡󭍨󛭥󮍰󚌭󚌨󦌭󜼲󚜪󚬲󚼨󦬭󜜶󚜪󚬲󚜯󮬩󚭒󛌳󛌳󚜊󩭯󬬨󪼽󝍥󜼻󪼭󛜻󮌮󩭩󫍬󤭥󨽴󚌹󝜳󛝃󚍫󚜪󮬬󝌱󜌫󤬬󜬬󤼨󪼩󚭺󚜩󩬨󪼯󝬴󛍫󙜳󜬩`.replace(/u../g,'')))

Jun 28 2021 11:54 PM UTC

}// 126/140

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curvature of space#time

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KilledByAPixel

remix of d/22982 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󭼽󨼮󭽩󩍴󪌦󟝩󟜱󜌳󝬸󞼭󛝩󞽶󟜽󜭼󭬦󜼪󘝔󦽓󟝩󚼨󪜪󭍞󪜩󙜳󛜱󚼨󭬾󜝼󤼦󜜿󭬦󜬿󛝷󞭷󞬰󚝝󟽔󦽩󧜽󚍔󦽓󧜽󭬩󙬲󟽶󛜲󞬰󞭯󫭭󫽵󬽥󫝯󭭥󟝥󟜾󥍛󭼪󚍥󛭹󚬨󭼯󟝩󫭮󩝲󥽩󩍴󪌩󯌰󚜫󩜮󮌪󭽼󜍝󟝥󛭢󭝴󭍯󫭳󚝸󛭦󪝬󫍒󩝣󭌨󪜥󭼬󪜾󟬷󛌱󛌨󭬽󥍛󪝝󚜯󝜩`.replace(/u../g,'')))

Jun 4 2021 4:58 PM UTC

}// 140/140

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Tiny Sandbox ⌛ Use mouse buttons to place... None 🧼 Erase, L 🌊 Water, M 🧱 Wall, R ⚡️ Lightning Eraser, L+M ⌛️ Sand, R+M 🌱 Vines, L+R ⛈️ Rain Storm, L+M+R 🌪️ Sand Storm

u/KilledByAPixel

Add the code onmousedown=oncontextmenu=_=>!1 to improve usability (prevents other mouse events)
u/KilledByAPixel

#interactive #physics #game
u/KilledByAPixel

#sand
u/SockTaters

This amazes and confuses me. I am stupefied

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KilledByAPixel

remix of d/21044 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󭼽󨼮󭽩󩍴󪌦󟝩󟜱󜌳󝬸󞼭󛝩󞽶󙬡󚍔󦽲󟝩󚼨󭬾󜬿󛝷󞭷󚜫󚍩󚭴󧭩󚜥󜼭󜝝󙜳󚝼󭬽󟜶󟼨󥍛󬭝󟝶󚜭󜼿󥍛󪝝󟝶󟬶󟼱󞬰󞬰󞭯󫭭󫽵󬽥󫝯󭭥󟝥󟜾󥍛󭼪󚍥󛭹󚬨󭼯󟝩󫭮󩝲󥽩󩍴󪌩󯌰󚜫󩜮󮌪󭽼󜍝󟝥󛭢󭝴󭍯󫭳󚼱󚝸󛭦󪝬󫍒󩝣󭌨󪜥󭼬󪜾󟬷󛌱󛌨󭬽󥍛󪝝󚜯󝌩`.replace(/u../g,'')))

Jun 3 2021 8:47 PM UTC

}// 139/140

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Sand Game 🏖️ Draw with mouse - Left=Wall, Right=GreyGoo, Middle=Lightning, Middle+Right=SandStorm, Middle+Left=Destroy, Left+Right=DarkWall

u/KilledByAPixel

Experiment with different combinations, fullscreen recommended!
u/KilledByAPixel

#interactive #physics #game
u/erin

powder game flashbacks
u/KilledByAPixel

Add the code onmousedown=oncontextmenu=_=>!1 to improve usability (prevents other mouse events)
u/KilledByAPixel

#sand

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ciaccodavide

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👨🐨𪰽𜠰𜀩𚠲𒡮👴𙐹𒡦𫱲𚁩🐰𞱩🀹𞱩𚰫𚑪👩𚠱𜀰𛁮🠸🱸𛡦𪑬𫁒𩑣𭀨𪀫𪠫𝐰𚠨𞐭𫠩𛁨𛀵𜀬𪰩𞡮🡩𛐱𙠦𫠼𪐿𒡸𛡦𪑬𫁒𩑣𭀨𪀫𪠫𚁮𛑩𚰱𚐪𝐰𛁨𛀵𜀬𪰩𒠺𫠾𪐿𮀮𩡩𫁬𤡥𨱴𚀴𝐰𚱪𛁨𛀵𜀬𪰩𒠺𮀮𩡩𫁬𤡥𨱴𚁨𚱪𛁨𛀵𜀬𪰩`.replace(/u../g,'')))

Nov 4 2020 1:59 PM UTC

}// 136/140

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Default Inertia

u/katkip

#default #physics

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katkip

function u(t) {

c.width*=1;f=(X,Y,s)=>{if(s>2){x.arc(X,Y,s,0,-7,s,q=S(t*2-s)/(1+t)*2,f(X+s*2/3*S(q),Y+s*2/3*C(q),s/3)),x.stroke()}else{}}
f(960,540,400)

Oct 16 2020 4:10 PM UTC

}// 136/140

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fake #physics

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tomxor

remix of d/19655 by u/tomxor

function u(t) {

eval(unescape(escape`𭑛𭁼𮀮𩡩𫁬𤡥𨱴𚁸𛡧𫁯𨡡𫁁𫁰𪁡🐱𛱴𛀰𛀲𩐳𛀲𩐳𚑝👛𞐶𜀬𝐴𜀬𜰬𜰯𭁝𞱵👴🱵𛡭𨑰𚀨𦱏𛁯𛁡𛁢𧐩🐾𚁵𛡭𨑰𚀨𦱒𛁍𧐩🐾𚁔👯𛑍𛁘👏𛑒𛁦🐨𦀪𦀯𜰫𥀪𥀯𜰩𚠪𜐮𝐯𝀸𚰲𛁡𛐽𦀯𩠬𨠭👔𛱦𚐩𛁸𛡣𫁥𨑲𤡥𨱴𚁏𛁯𛀹𛀹𚐬𦱏𚱡𛁯𚱢𛁡𛁢𧐩𚐺𦱝`.replace(/u../g,'')))

Aug 13 2020 7:52 PM UTC

}// 140/140

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#nbody #gravity

u/tomxor

... #waitforit initialising chaos quickly is hard
u/tomxor

This is not very accurate of course, in particular it has quite bad iteration bias - and it's possible my math is wrong. It kinda looks right though I think.
u/Xen

sexy!
u/DataMeta

wow, cool! #physics #simulation

dwitter.net | #Physics