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Comments:
<0> paste code
<1> ok, I may have gotten rid of it though
<2> view*sphere_rotation*relative_transform, where relative transform is relative_rotation*relative_translation
<1> Yeah, I got rid of it.
<2> a call to glRotate or glTranslate is the same as a multiplication
<1> Hmm
<1> All I know is since I'm rotating, the XYZ planes are flipping
<1> Or rather, I'm in a different position and so on
<2> multiplication = chaning coordinate system
<1> yeah
<2> so ofcourse the axes are changing
<1> So if I rotate 90 degrees, x becomes z, y becomes x, z becomes y
<2> dont bother with that
<2> thats why you perform the translation _first_
<2> in local space
<1> I do
<2> how?
<2> show the function calls
<1> glLoadIdentity(); glTranslatef(0.38,0.9,-6.0); glRotatef(90,0.0,1.0,0.0); glutSolidCone(etc...);
<2> did you even read what I wrote?
<1> yes and no?
<2> "transforms are from right to left"
<2> "relative_rotation*relative_translation"
<1> Yeah, whats all that about
<2> "a call to glRotate or glTranslate is the same as a multiplication"
<1> okay
<1> So I should multiply instead?
<2> rotate THEN translate
<1> ok
<2> and you need a view transform
<1> oh that didnt work
<3> r do da t frunt of f to da m
<1> The cone disappeared
<1> a view transform?
<1> I don't think I even have a camera :S
<2> ModelView = View_transform * Model_transform
<2> so setting it to identity and them applying the model transform means that the view transform is identity
<1> So i should glLoadIdentity afterwards?
<1> I'm so not following
<3> :P
<2> gluLookat!
<4> i think glulookat is used for setting camera postion. if i want to put openglss's object in particular coordinate in 3d space. what gl command should i use?
<2> or something
<4> something is, like, amiss again'
<1> gluLookat?
<4> i guess gluLookat is used for setting camera postion. if i want to put openglss's object in particular coordinate in 3d space. what gl command should i use?
<2> add it right after the first glLoadIdentity
<3> pitdroid, shut up
<4> :X
<2> perhaps you should start with some OGL tutorials?
<1> I did
<1> I did nehe.gamedev.net
<3> ;D
<1> gluLookAt has like 10 parameters! *dies*
<3> pitdroid, msdn gluLookAt
<2> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/opengl/glufnc01_8wtw.asp
<3> :D
<4> :D
<3> swx is my new bot
<3> swx: fetch!
<1> I found an explenation on google :P
<1> Wow, this is complex
<1> All this for a snowman's nose.
<1> *dies*
<3> without a view matrix, yer pissin in teh wind anyway
<3> ;)
<1> I didn't know what it was until a second ago
<1> ok gluLookAt makes no difference
<1> It's being called in GlInit and it does nothing
<2> you need it every frame, after your glLoadIdentity
<1> Okay.
<1> I'll tryu
<1> *try it
<2> glLoadIdentity(); gluLookat(...); glRotate(...); glTranslate(...);
<1> And that allows me to choose where things are made?
<1> Ah, now the bottom sphere disappears.
<1> Should I restart making my animation using gluLookAt?
<2> the view transform has nothing to do with animation
<2> its for transforming from the world space to screen space
<2> think of it as having the role of the camera
<2> that is viewing the scene
<5> The best thing is not to think of a camera at all.
<5> But inverse transformations.
<5> Since that is what the "camera" actually is.
<1> Yeah, but I think simply
<2> well gluLookat acts as setting up the camera
<1> 'camera' helps
<2> but it really creates the inverse of the "camera" transform
<2> yeah, a camera is a lot easier to visualize when working with setting up scenes
<1> And the parameters for glulookat are x,y,z of camera x,y,z where to look at and x,y,z something else
<1> Right?
<2> yeah, and the something else is the up vector
<1> Is that important?
<2> yes
<1> How so?
<3> anyone know of a good free proxy app for windows?
<2> view_vector x up_vector (or the other way around) = right/left vector
<2> then view x right/left = up
<1> These calculations mean very little to me :(
<2> which is the base of the "camera" matrix
<2> x = cross product
<2> basically, you need 3 vectors to create a base (orientation) in 3d space
<2> and since you only supply 2, it needs to create the other
<1> okay
<1> I've got xyz camera, xyz looking at, what do I enter for up vector?
<1> the camera's at 0.0, 3.0, 2.0 looking at 0.0, 0.0, 0.0.
<2> usually 0,1,0 if y is pointing up
<5> The direction up, which is peripendecular to the forward and left or right directional vector.
<1> ok
<5> POS3D up = Normalize( Cross(forward, left) );
<1> oh screw it, forget gluLookAt
<6> lol
<6> too bad
<7> i'm just polishing my camera tutorial which would have explained all of that in very minute detail
<7> listen to me i sound like some pompous jack*** :\
<8> Can we call you pompous jack*** from now on? :D
<7> absolutely, be prepared for an echo though :D
<8> heh heh heh
<8> So how ya doing pompous jack***?
<7> good, how about yourself dip****? (weird echo effect huh?) lol ;-)
<8> jack*** for short *** for even shorter?
<8> pretty good thanks
<8> What've you been upto today then ***?
<8> haha
<7> ah man i'm insane when i just wake up ;)
<8> yeah sounds that way
<9> http://www.joystiq.com/2005/08/09/totem-tattoo-commemorates-influential-games/
<7> http://simondodson.com/images/space.jpg
<7> i dont' know what's worse...the ****ty tattoo or the ugly *** shoes
<10> Why would anyone want to have a needle stinging your skin a zillion times to permanently wear a single image?
<10> And pay for it?
<11> why would anyone pay for anything?
<3> no ****
<12> cause you cant pirate hardware
<3> :O
<3> what ever!
<4> ever is, like, hard to say but definitely not for the forseeable future
<12> nd to kimmo its coOL MAN
<10> If I had a cloning device...
<12> not that Id get a tattoo
<12> but its not as bad as u make it sound lol
<10> It's not cool... it's lame :S
<3> you can pirate a curuise ship in a row boat if you wanted
<9> wow
<9> that shoe is really bad
<3> ;)
<7> many things we question about what each of us do, few can really answer
<10> Tatoos are like marriage -- might sound "mature" and nice at the time you do it, but then you'll regret it badly.
<12> haha I want those shoes
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