Navigate a 3d world

[ArielC]

Hi all, I'm not sure how to explain this. I have a wrl of a room and I could
control the camera using the available Dolly and pan behaviors. I am planning
to add a plan view next to it like a keyplan which shows my location(shown say
a filled circle) . Now how do I move my camera and see the location of the
circle (at plan) move in sync. Can I just attach the circle(? behavior) to the
camera so both of them moves at the same time? Or do I need a separate behavior
for the circle? Thanks. Any help will be appreciated.

[Agustín María Rodríguez]

ArielC wrote:

> Hi all, I'm not sure how to explain this. I have a wrl of a room and I could
> control the camera using the available Dolly and pan behaviors. I am planning
> to add a plan view next to it like a keyplan which shows my location(shown say
> a filled circle) . Now how do I move my camera and see the location of the
> circle (at plan) move in sync. Can I just attach the circle(? behavior) to the
> camera so both of them moves at the same time? Or do I need a separate behavior
> for the circle? Thanks. Any help will be appreciated.
>

Hi. I´ve done that top view with a sepparate sprite for the plan and
another for the circle [url]www.onwine.com.ar[/url] > demos > house. Then, it´s all
about 2D maths. You get the 3D coordinates of each side so you know the
boundaries and then convert that to 2D space. Here´s my -not so clean-
behavior:

property pMember -- reference to the 3D member used by this sprite
property pSprite -- reference to this sprite
property pCamera -- reference to the sprite's camera
property pTop, pRight
property pWidth3D, pHeight3D
-------------------------------------------------------------------
property p2dMap
property pWidth2D, pHeight2D
property pRedPoint
property pRightBorder, pTopBorder

---------------------------
property pTime2wait, pBeginCounting

on beginSprite me
-------------------3D refs
pSprite = sprite(1)
pMember = pSprite.member
pCamera = pSprite.camera

pTop = -1575
pHeight3D = (pTop * -1) + 640

pRight = -790
pWidth3D = (pRight * -1) + 690

----------------------- 2d map refs
p2dMap = sprite(me.spriteNum)
pWidth2D = p2dMap.width
pHeight2D = p2dMap.height
pRightBorder =p2dMap.rect[3]
pTopBorder = p2dMap.rect[2]
pRedPoint = sprite(5)

------------------------timer refs
pBeginCounting = the milliseconds
pTime2wait = 333 --update map every 1/3 sec


end


on update2dMap me

camPos = pCamera.worldposition

--move Y axis
camY = camPos.x
Ypercent = (camY + (pTop * -1)) / pHeight3D
pRedPoint.locV = pTopBorder + (pHeight2D * Ypercent)

--move X axis
camX = camPos.z
Xpercent = (camX + (pRight * -1)) / pWidth3D
pRedPoint.locH = pRightBorder - (pWidth2D * Xpercent)

end


on enterFrame me
--timer
timeElapsed = the milliseconds - pBeginCounting
if timeElapsed > pTime2wait then
update2dMap me
pBeginCounting = the milliseconds
end if
end

HTH,
--
Agustín María Rodríguez | Partner
Methanoia Studio | [url]http://www.methanoia.com[/url]
---------------------------------------------------
[url]www.onwine.com.ar[/url] > Macromedia Director demos & code

[ArielC]

Thanks. But I tried to attach it to my 3dmember but nothing seem to happen. What am I doing wrong?

[Agustín María Rodríguez]

ArielC wrote:

> Thanks. But I tried to attach it to my 3dmember but nothing seem to happen. What am I doing wrong?

Hi, Ariel. My behavior is not intended to work on every existing W3D
scene on the planet ;) It´s just an idea of a possible approach. You
have to make it fit for your project although I realized that you´re not
willing to do any programming at all. I´m not aware of any ´ready to go´
behavior for achieving this without programming :(

hth,
--
Agustín María Rodríguez | Partner
Methanoia Studio | [url]http://www.methanoia.com[/url]
---------------------------------------------------
[url]www.onwine.com.ar[/url] > Macromedia Director demos & code