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Camera Movements (Read 705 times)

disablek YaBB Newbies Offline Posts: 48	Camera Movements Mar 12^th, 2008, 5:55pm Hi, i was just wondering if there's anyway to get the viewing area to function like a camera view, or whether there's a library out there that does it?

JohnG Ex Member	Re: Camera Movements Reply #1 - Mar 12^th, 2008, 7:35pm The OCD (Obsessive Camera Direction) library should do what you want I think.

acapulco Junior Member Offline Posts: 63	Re: Camera Movements Reply #2 - Mar 12^th, 2008, 8:10pm Doesn't it always the working area behave like the camera? I mean, when using a 3D renderer, the viewing area is actually what the camera sees. What am I missing here? @JohnG: What's that library for?

disablek YaBB Newbies Offline Posts: 48	Re: Camera Movements Reply #3 - Mar 13^th, 2008, 8:33am oh yeah, that's the one. Missed it on the extended libraries page. it's working out great. aca: it's just an abstraction of the camera() function, so you can use the usual camera paradigms like dolly, truck, roll, pan, tilt, etc.

disablek YaBB Newbies Offline Posts: 48	Re: Camera Movements Reply #4 - Mar 13^th, 2008, 9:27am Oh is there anyway to calculate the width & height of the viewport of the camera? i'm trying to do the fill a white with alpha rectangle trick to clear out the background.

disablek

Re: Camera Movements
Reply #5 - Mar 13^th, 2008, 10:11am

A little funny thing about though, if i draw a rect near the camera position and the alpha is not 255, objects drawn further from the camera z position can be seen -- the alpha of the white rect doesn't seem to affect the further images much. But at 255, it's all opaque ( as it should be).

So basically i'm trying to ask, is there anyway to allow processing to view the entire scene as 2D even though there is a 3D camera?

V Senior Member Offline Posts: 430 portugal	Re: Camera Movements Reply #6 - Mar 13^th, 2008, 11:29am if you draw a object that is not opaque its transparent so allows to see through it. as for your question the solution is you should draw transparent objects after you draw your opaque ones and you should sort them out and draw back to front. to view your scene in "2D", no perspective draw them in Ortho mode.
	Victor Martins \| www.pixelnerve.com/v

disablek

Re: Camera Movements
Reply #7 - Mar 14^th, 2008, 6:11am

i was just a little surprised that an alpha of 254 doesn't seem to have much effect on the far objects, but i guess that would be solved by the drawing back to front advice.

i can't use the ortho mode because it's already using OCD. The solution is probably just to create a pimage and draw into that pimage and attach it to a point that turns/rolls/tilts together with the camera and at a distance that covers the width and height of the viewing area.

disablek YaBB Newbies Offline Posts: 48	Re: Camera Movements Reply #8 - Mar 14^th, 2008, 6:05pm well, i suddenly realised that i could just manipulate the pixels[] array and do whatever i needed there. !!

acapulco Junior Member Offline Posts: 63	Re: Camera Movements Reply #9 - Mar 15^th, 2008, 6:43pm [quote author=disablek aca: it's just an abstraction of the camera() function, so you can use the usual camera paradigms like dolly, truck, roll, pan, tilt, etc. [/quote] Ohh. I see. So you can just say like, "pan the camera to the right 300 pixels", instead of replacing all the camera parameters, including eye position, etc?

disablek YaBB Newbies Offline Posts: 48	Re: Camera Movements Reply #10 - Mar 17^th, 2008, 1:30am yeah, though the OCD library seems to have some problems with trucking in the x direction when the camera has rolled about the z axis. Pop open the java file that comes with the ocd library, it's not really massive and has all the maths.

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