Draw a Resizeable Circle?

Hi, maybe this was asked before.

But, I need to draw a circle that wont get fuzzy/pixelated no matter what size. And it needs to VERY big so I can't prerender it and shrink it down.

I thought I could do this with the canvas object, But I can't find it. And I remember in earlier builds of Construct a Circle.FX which might work.

Any help?

if its an outline of a circle you want, you can use a canvas object, if you want a filled circle, your going to make some custom code with distort maps and stuff. how BIG does it have to be, and whats the intended use?

[quote:1mvhoz63]how BIG does it have to be?

Um, that's the thing HUGE. And I mean huge big. Thousands of pixels across, If the player comp can handle it. (It is a settable preference in the game)

[quote:1mvhoz63]and whats the intended use?

An area of influence between objects so the player can monitor the strength.

That kind of rules out canvas, it can only draw when its on screen.

Plus it can take up a lot of ram.

Does the player actually have to see the hole?

If so you could apply the colored outline fx to a pre rendered sprite. It has an alpha setting that should help when you get a little "jaggy".

If you don't need to see it, you could always go with distance(x1,y1,x2,y2).

Where x1,y1 are the center of the object, and x2,y2 are the other objects.

If you can't get decent performance, you might want to do what starcraft 2 does with the range of siege tanks instead or as a fallback it it hits the framerate. I can't find a screenshot atm but it puts a ring of sprites around the range instead of a solid ring.

As is said, if you want only an outline, the canvas will work perfectly, you just need to use a loop and do a bit of trig, and the canvas can stay the same size on screen (full window) it doesn't need to be bigger

As is said, if you want only an outline, the canvas will work perfectly, you just need to use a loop and do a bit of trig, and the canvas can stay the same size on screen (full window) it doesn't need to be bigger

Not sure what you mean. Are you talking about a portion of the circle?

Here's this till someone figures out a trig version.

http://dl.dropbox.com/u/666516/circle.cap

Do you want something like this?

http://dl.dropbox.com/u/10316081/circle.cap

You will need

Disk Effect: tulamide

Alpha Inverse effect: Made just for this

http://dl.dropbox.com/u/10316081/Alpha%20Inverse.fx

Here is a cap with some additional ways to make a circle with the canvas object:

1. Filled circle.

2. Polyline circle. (the trig way)

3. Graph of a circle.

http://dl.dropbox.com/u/5426011/examples3/circle.cap made in 0.99.96.

Haha, now that's service.

Question tho, is anyone else getting lines across the bottom of the filed circle?