Author Topic: Building Golden Gate style Bridges  (Read 3358 times)

Frish

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Building Golden Gate style Bridges
« on: October 16, 2001, 11:54:04 AM »
yes, stress it slow, don't just drop kick all the invisible hand-of-god supports out from under it when you hit test . . . let it start curved and bent and stuff.
Iffen you are a homeworld fan, check out this here site 'o mine:http://www.TRIvsFLUX.8m.com

Calastigro

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Building Golden Gate style Bridges
« Reply #1 on: October 14, 2001, 02:33:11 PM »
A while ago, i was putzing around, and i wanted to make golden-gatey bridges.  First problem?  Making cables curved, slack, and able to be attached to things along their run.  My solution?  build the shape of cable out of steel, then delete it, leaving the points behind.  then connect the dots.  wow!  i'm surprised that worked.  yeah.  i hope this helps people out there.

Calastigro

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« Reply #2 on: October 18, 2001, 06:10:27 PM »
something i have done, which i think is cool, is on some levels where it's really hard to make a supported bridge, i didn't.  I built out, then made a bridge floating, to be dropped when you hit test.  it works well on certain levels (like complex #15).  I'll e-mail you a copy if you wanna see...

baggio

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« Reply #3 on: October 22, 2001, 09:55:19 PM »
Quote: from Calastigro on 7:10 pm on Oct. 18, 2001
something i have done, which i think is cool, is on some levels where it's really hard to make a supported bridge, i didn't.  I built out, then made a bridge floating, to be dropped when you hit test.  it works well on certain levels (like complex #15).  I'll e-mail you a copy if you wanna see...That was actually my solution too... I just kinda wedge it in there... ':)'
beaujob: I wouldn't mind doing kung-fu in the shadow of a bridge that I built while death and a clown get it on in the bathtub next door, but that's a long ways off.

Remnant

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« Reply #4 on: October 14, 2001, 05:13:53 PM »
Hmm. I've been able to do exactly that with cable.. not sure why you'd need to build the shape out of steel first, as you can do the exact same thing with cable.

Calastigro

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« Reply #5 on: October 14, 2001, 06:54:08 PM »
if i'm not mistaken, you can only connect the dots with cable... wait, maybe i am mistaken... lemme check...

JohnK

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« Reply #6 on: October 15, 2001, 07:37:38 PM »
Suspension cable bridges are cool, but it would be nice if you could pre-tension the cables so the bridge wouldn't do that floppy thing when you test it. Does this make any sense?

Calastigro

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« Reply #7 on: October 14, 2001, 06:58:10 PM »
yeah, i'm just hecka dumb.... sorry...

Brinx

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Building Golden Gate style Bridges
« Reply #8 on: October 15, 2001, 08:39:35 AM »
Heh, I used a similar tactic too on some levels: First build the hanging cable w/ no cables hanging down from it. Then test the "bridge" and see if the hanging cable keeps its shape. If not, adjust its shape so it best fits the "equilibrium" position (You often need HD grid for this), and then hang cables from the main one to attach the deck to. It works very well, if your main bridgeposts are sturdy enough.

mat-c

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« Reply #9 on: October 15, 2001, 05:57:37 PM »
Hanging a cable is a cool idea... and its accurate enough that it probably works ':)'
Technically however a hanging cable is a catenary (formed by adding two exponentials) whereas a light cable supporting a heavy deck (the case for Pontifex) is a parabola (x squared relative to the centre).
If you can't be bothered with a calculator, just increment each successive segment from the centre by an increasing amount.  Eg 1unit, 2units, 4, 7, 11, 16 etc.   This is a parabola, the perfect shape for a suspension bridge with light cables ':)'