Quick stupid question: what are the coordinates for an isometric camera?

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Megaton Cat

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Posted: 27th Oct 2003 18:22

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um...I am bad at finding stuff.

thanks

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Zener

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Posted: 27th Oct 2003 18:32

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This is probably not right but I would think you would just move the camera an equal amount of distance away from the focal point on all axis. Kinda like you were scaling a cube.

That is what I would start with

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Megaton Cat

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Posted: 27th Oct 2003 18:45 Edited at: 27th Oct 2003 18:48

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Thats what I did but the camera still looks a bit tilted and not quite right (I was aiming for a Diablo II sort of camera but got something more like conkers bad fur day)

I remembered I read somewhere in a book or tutorial that showed a diagram with the exact coordinates. But thanks for helping anyway Ill try to find in right now. If anyone does kow please let me know.

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zircher

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Posted: 27th Oct 2003 19:42

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Use the same value for X, Y, and Z (negative values also apply.)

For example, let's say you're looking at 0,0,0.

You can set the camera at...
100,100,100 or -100,100,100 or 100,100,-100 or -100,100,-100
and still get the same iso camera angles.

Now, having said that, the default camera is a perspective camera and there will be distortion at the edges. If this is not acceptable, use 1000,1000,1000 or higher values and then use FOV to 'zoom' in on the same scene. This should create a flatter render.

Good luck.
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TAZ

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Megaton Cat

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Posted: 27th Oct 2003 19:58

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hey thanks ill try it.

one part i dont get though

Quote: "use FOV to 'zoom' in on the same scene. This should create a flatter render.
"

FOV? I'm an not sure if i am familiar with that. What does it do?

thanks

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M00NSHiNE

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Posted: 27th Oct 2003 23:24

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Field of View - look at the camera commands in the help file.

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Preston C

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Posted: 28th Oct 2003 04:18

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if you need to get an easy isometric view, I've got a function

+ Code Snippet

function IsometricCamera(x#,y#,z#,zoom#,angle#)
rotate camera 0,0,0
position camera x#,y#,z#
if angle#=1 then yrotate camera 0
if angle#=2 then yrotate camera 90
if angle#=3 then yrotate camera 180
if angle#=4 then yrotate camera 270
if angle#<1 or angle#>4 then yrotate camera 0
yrotate camera (camera angle y()+135)
xrotate camera 315
move camera zoom#
yrotate camera wrapvalue(camera angle y()-180)
xrotate camera wrapvalue(camera angle x()+90)
endfunction

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Megaton Cat

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Posted: 29th Oct 2003 06:54

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it doesnt do anything i compile it but my screen just goes black and then it returns to the editor. Any advice?

thanks

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BatVink

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Posted: 29th Oct 2003 10:36

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Quote: "it doesnt do anything i compile ..."

Omega has just given you a function to position the camera...you'll need to put something in front of it!!!

BatVink (formerly StevieVee)
http://facepaint.me.uk/catalog/default.php

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Megaton Cat

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Posted: 29th Oct 2003 19:45 Edited at: 29th Oct 2003 19:56

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I'm aware of that.

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Megaton Cat

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Posted: 30th Oct 2003 03:04 Edited at: 30th Oct 2003 03:12

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ok, so I put everything in its place (um..think) but it crashes! Can I have a sample maybe?

thnaks

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Preston C

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Posted: 30th Oct 2003 03:40

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Here ya go

sync on
sync rate 30
make matrix 1,100,100,100,100
position matrix 1,0,0,0
xpos=0
zpos=0
zoom=10
ResetCamera()
do
if leftkey()=1 then dec xpos
if rightkey()=1 then inc xpos
if upkey()=1 then inc zpos
if downkey()=1 then dec zpos
if inkey$()="2" and zoom>10 then dec zoom
if inkey$()="8" then inc zoom
if inkey$()="4" and angle>1 then dec angle
if inkey$()="6" and angle<4 then inc angle
text 1,1,str$(screen fps())
text 1,13,str$(xpos)
text 1,25,str$(camera position y())
text 1,37,str$(zpos)
IsometricCamera(xpos,0,zpos,zoom,angle)
sync
loop

function ResetCamera()
rotate camera 0,0,0
endfunction

function IsometricCamera(x#,y#,z#,zoom#,angle#)
rotate camera 0,0,0
position camera x#,y#,z#
if angle#=1 then yrotate camera 0
if angle#=2 then yrotate camera 90
if angle#=3 then yrotate camera 180
if angle#=4 then yrotate camera 270
if angle#<1 or angle#>4 then yrotate camera 0
yrotate camera (camera angle y()+135)
xrotate camera 315
move camera zoom#
yrotate camera wrapvalue(camera angle y()-180)
xrotate camera wrapvalue(camera angle x()+90)
endfunction

+ Code Snippet

sync on
sync rate 30
make matrix 1,100,100,100,100
position matrix 1,0,0,0
xpos=0
zpos=0
zoom=10
ResetCamera()
do
if leftkey()=1 then dec xpos
if rightkey()=1 then inc xpos
if upkey()=1 then inc zpos
if downkey()=1 then dec zpos
if inkey$()="2" and zoom>10 then dec zoom
if inkey$()="8" then inc zoom
if inkey$()="4" and angle>1 then dec angle
if inkey$()="6" and angle<4 then inc angle
text 1,1,str$(screen fps())
text 1,13,str$(xpos)
text 1,25,str$(camera position y())
text 1,37,str$(zpos)
IsometricCamera(xpos,0,zpos,zoom,angle)
sync
loop

function ResetCamera()
rotate camera 0,0,0
endfunction

function IsometricCamera(x#,y#,z#,zoom#,angle#)
rotate camera 0,0,0
position camera x#,y#,z#
if angle#=1 then yrotate camera 0
if angle#=2 then yrotate camera 90
if angle#=3 then yrotate camera 180
if angle#=4 then yrotate camera 270
if angle#<1 or angle#>4 then yrotate camera 0
yrotate camera (camera angle y()+135)
xrotate camera 315
move camera zoom#
yrotate camera wrapvalue(camera angle y()-180)
xrotate camera wrapvalue(camera angle x()+90)
endfunction

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