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Make your screen go all wobbly!

+ Code Snippet

`*** Jelly Physics by Ric ***


sync on:sync rate 40:autocam off:hide mouse:color backdrop 0

make object sphere 1,1
color object 1,rgb(255,0,0)
position object 1,-2,0,0
make object cone 2,0.8
color object 2,rgb(0,255,0)
position object 2,0,0,-2
make object cube 3,1
color object 3,rgb(0,0,255)
position object 3,2,0,0
position camera 0,0,-5
sync
get image 1,0,0,screen width(),screen height(),1
delete object 1
delete object 2
delete object 3

omega#=1.0
amp#=20.0
rows=50
columns=50
elasticity#=0.004
damping#=0.99
a=15
b=10

position camera rows/2,50,columns/2
yrotate camera -90
point camera rows/2,0,columns/2

num=rows*columns
dim obnum(rows+1,columns+1)
dim v#(rows,columns)
make matrix 1,rows,columns,rows,columns
for x=1 to rows
for z=1 to columns
obnum(x,z)=ob
ob=ob+1
next z
next x
prepare matrix texture 1,1,rows,columns
tile=1
for x=rows-1 to 0 step -1
for z=0 to columns-1
set matrix tile 1,z,x,tile
inc tile
next z
next x

do

y#=amp#*sin(theta#)
theta#=theta#+2
set matrix height 1,a,b,y#
for x=1+1 to rows-1
for z=1+1 to columns-1
if x<rows
distxp1#=get matrix height(1,x+1,z)-get matrix height (1,x,z)
endif
if x>1
distxm1#=get matrix height(1,x-1,z)-get matrix height (1,x,z)
endif
if z<columns
distzp1#=get matrix height(1,x,z+1)-get matrix height (1,x,z)
endif
if z>1
distzm1#=get matrix height(1,x,z-1)-get matrix height (1,x,z)
endif
vectorsum#=distxp1#+distxm1#+distzp1#+distzm1#
a#=vectorsum#*elasticity#
v#(obnum(x,z))=v#(obnum(x,z))+a#
set matrix height 1,x,z,get matrix height(1,x,z)+v#(obnum(x,z))
v#(obnum(x,z))=v#(obnum(x,z))*damping#
next z
next x
update matrix 1
sync

loop

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Simple but effective.

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Nice for underwater effect

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Good point - hadn't thought of that. Code title should now read 'Dynamic optical refraction modelling'.

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Thanks for throwing this together. It may help with a distortion effect I was wanting to try.

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screenshot please

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neato

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Hey - I got into the newsletter with this!! Woohoo!