How do you make a Hologram Orbit around another Hologram?

[iSpork]

This is my 2nd day using E2 so I'm not very knowledgeable. I'm interested in making a Sphere that orbits around another sphere but I have no idea how to go about it.

[Drunkie]

Look at E:toWorld(V), the object will rotate around the entity E. Make the X and Y of V equal a cosine and sine wave. (Someone should explain this more in-depth after me I suppose).

[Jeroenvw]

I made an example for you:

@name Orbit
@persist Count
interval(10)

Count += 0.01

X1 = 40*cosr(Count)
Y1 = 40*sinr(Count)
Z1 = 50

X2 = 25*cosr(3*Count)
Y2 = 25*sinr(3*Count)
Z2 = 0

holoCreate(1)
holoScale(1,vec(2,2,2))
holoPos(1,entity():pos()+vec(X1,Y1,Z1))

holoCreate(2)
holoPos(2,holoEntity(1):pos()+vec(X2,Y2,Z2))

Pretty self-explainatory.

holoPos(1,entity(): pos+vec(X1,Y1,Z1)) sets the position for the first hologram, right? (being the position of the e2 chip)
holoPos(2,holoEntity(1):+vec(X2,Y2,Z2)) sets the default position for the second hologram to be the position of the first hologram.

The rest is basic circlemaking.

EDIT: very inaccurate representation of the sun/earth/moon as an extra example

X1 = 0
Y1 = 0
Z1 = 100

X2 = 200*cosr(2*Count)
Y2 = 200*sinr(2*Count)
Z2 = 0

X3 = 20*cosr(10*Count)
Y3 = 20*sinr(10*Count)
Z3 = 0

holoCreate(1)
holoModel(1,"icosphere3")
holoScale(1,vec(8,8,8))
holoColor(1,vec(255,200,0))
holoPos(1,entity():pos()+vec(X1,Y1,Z1))

holoCreate(2)
holoModel(2,"icosphere3")
holoScale(2,vec(2,2,2))
holoColor(2,vec(0,0,255))
holoPos(2,holoEntity(1):pos()+vec(X2,Y2,Z2))

holoCreate(3)
holoModel(3,"icosphere3")
holoScale(3,vec(0.5,0.5,0.5))
holoColor(3,vec(150,150,150))
holoPos(3,holoEntity(2):pos()+vec(X3,Y3,Z3))

[iSpork]

Confuses the hell out of me but I'm sure I can figure it out. Thanks for the example!

I've figured out how it works now. Thanks everyone for your help

Another quick question. I'm making a Solar System Hologram and I have all the planets Orbiting around the "Sun" but I can't figure out how to make a planet orbit around another planet that is orbiting the sun, like a Moon. Any help with this would be welcome.

Here is the Code I have so far.

@name Solar System WIP
@persist Count
interval(10)

Count +=0.01

X1=0*cosr(Count)
Y1=0*sinr(Count)
Z1=100

X2=150*cosr(1*Count)
Y2=150*sinr(1*Count)
Z2=100

X3=250*cosr(1.5*Count)
Y3=250*sinr(1.5*Count)
Z3=100

X4=375*cosr(2.5*Count)
Y4=375*sinr(2.5*Count)
Z4=100

X5=500*cosr(0.25*Count)
Y5=500*sinr(0.25*Count)
Z5=100

X6=650*cosr(0.50*Count)
Y6=650*sinr(0.50*Count)
Z6=100

holoCreate(1)
holoScale(1,vec(15,15,15))
holoPos(1,entity():pos()+vec(X1,Y1,Z1))
holoModel(1, "hqicosphere2")
holoMaterial(1, "models/props_lab/xencrystal_sheet")

holoCreate(2)
holoScale(2,vec(15.5,15.5,15.5))
holoPos(2,entity():pos()+vec(0,0,100))
holoModel(2, "hqicosphere2")
holoMaterial(2, "models/effects/comball_tape")

holoCreate(3)
holoScale(3,vec(4,4,4))
holoPos(3,entity():pos()+vec(X2,Y2,Z2))
holoModel(3, "hqicosphere")
holoMaterial(3, "models/props_pipes/pipesystem01a_skin3")

holoCreate(4)
holoScale(4,vec(5,5,5))
holoPos(4,entity():pos()+vec(X3,Y3,Z3))
holoModel(4, "hqicosphere")
holoMaterial(4, "models/props_pipes/pipesystem01a_skin2")

holoCreate(5)
holoScale(5,vec(2,2,2))
holoPos(5,entity():pos()+vec(X4,Y4,Z4))
holoModel(5, "hqicosphere")
holoMaterial(5, "models/shadertest/shader4")

holoCreate(6)
holoScale(6,vec(6.2,6.2,6.2))
holoPos(6,entity():pos()+vec(X5,Y5,Z5))
holoModel(6, "hqicosphere")
holoColor(6,vec(0,150,0))
holoMaterial(6, "models/alyx/emptool_glow")

holoCreate(7)
holoScale(7,vec(8.6,8.6,2))
holoPos(7,entity():pos()+vec(X5,Y5,Z5))
holoModel(7, "hqtorus2")
holoMaterial(7, "models/props_combine/portalball001_sheet")

holoCreate(8)
holoScale(8,vec(6,6,6))
holoPos(8,entity():pos()+vec(X5,Y5,Z5))
holoModel(8, "hqicosphere")
holoColor(8,vec(0,50,0))

holoCreate(9)
holoScale(9,vec(13,13,13))
holoPos(9,entity():pos()+vec(X6,Y6,Z6))
holoModel(9, "hqicosphere")
holoMaterial(9, "models/effects/splode_sheet")

holoCreate(10)
holoScale(10,vec(13.2,13.2,13.2))
holoPos(10,entity():pos()+vec(X6,Y6,Z6))
holoModel(10, "hqicosphere")
holoMaterial(10, "models/alyx/emptool_glow")
holoColor(10,vec(255,196,3))

[mattwd0526]

Same idea as before with the planet orbiting the sun. Use Planet:toWorld(V), the X and Y of V being sine and cosine waves, and make that the position of the moon.

[dracotonisamond]

or you can cheat and parent a holo to another spinning holo

[Mr G]

I once used the rotate, dont know how I did it tho :/

holoPos(1,rotate(curtime()*60),0,0) or so

[Drunkie]

I once used the rotate, dont know how I did it tho :/

holoPos(1,rotate(curtime()*60),0,0) or so

V:rotate(A) - Gets the rotated vector
V:rotate(N,N,N) - Gets the rotated vector

So try this:

V:rotate(ang(0,curtime()*60,0))

[Jeroenvw]

Pretty self-explainatory.

holoPos(1,entity(): pos+vec(X1,Y1,Z1)) sets the position for the first hologram, right? (being the position of the e2 chip)
holoPos(2,holoEntity(1):+vec(X2,Y2,Z2)) sets the default position for the second hologram to be the position of the first hologram.

See what I did there?

holoPos(N,holoEntity(N-1):+vec(XN,YN,ZN))

You can repeat this until you have the desired amount of sattelites.

example:

holoPos(3,holoEntity(2):pos()+vec(X3,Y3,Z3))
holoPos(4,holoEntity(3):pos()+vec(X4,Y4,Z4))
holoPos(5,holoEntity(4):pos()+vec(X5,Y5,Z5))

[iSpork]

Took me about 10 minutes of staring blankly and rereading the code to understand it but I got it now. Thanks alot!

What about Vertical Orbit? Is it possible to make a hologram go around another at a vertical angle versus a horizontal angle?