camera views confusing - GameCreators Forum

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nruser

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Joined: 22nd Dec 2007

Location: Serbia

Posted: 8th Feb 2011 16:38

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i have tried to make four camera views for may level editor by i can't get this to work

`setup editor views
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function EditorViews()
	`make cameras for viewports
	make camera 1
	make camera 2
	make camera 3
	`setup cameras
	`perspective view
	set camera range 0,0.1,1000000
	position camera 0,-500,250,-250
	point camera 0,0,0,0
	`top view
	position camera 1,0,500,0
	point camera 1,0,0,0
	`side view
	position camera 2,-500,0,0
	point camera 2,0,0,0
	`front view
	position camera 3,0,0,500
	point camera 3,0,0,0
endfunction

`setup editor viewports
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function Viewports()
	`setup viewports
	`perspective view
	set camera view 0,screen width()/2,screen height()/2,screen width(),screen height()
	`top view
	set camera view 1,320+48,16,640-16,240-48
	`side view
	set camera view 2,screen width()/2,0,screen width(),screen height()/2
	`front view
	set camera view 3,0,screen height()/2,screen width()/2,screen height()
	
	`select default camera
	set current camera 0
endfunction

+ Code Snippet

`setup editor views
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function EditorViews()
	`make cameras for viewports
	make camera 1
	make camera 2
	make camera 3
	`setup cameras
	`perspective view
	set camera range 0,0.1,1000000
	position camera 0,-500,250,-250
	point camera 0,0,0,0
	`top view
	position camera 1,0,500,0
	point camera 1,0,0,0
	`side view
	position camera 2,-500,0,0
	point camera 2,0,0,0
	`front view
	position camera 3,0,0,500
	point camera 3,0,0,0
endfunction

`setup editor viewports
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function Viewports()
	`setup viewports
	`perspective view
	set camera view 0,screen width()/2,screen height()/2,screen width(),screen height()
	`top view
	set camera view 1,320+48,16,640-16,240-48
	`side view
	set camera view 2,screen width()/2,0,screen width(),screen height()/2
	`front view
	set camera view 3,0,screen height()/2,screen width()/2,screen height()
	
	`select default camera
	set current camera 0
endfunction

how this line

+ Code Snippet

set camera view 1,320+48,16,640-16,240-48

can set the viewport to top left corner of the screen, what i think this command should do is set camera view 1,0,0,640,480.

The problem for me is that i can't get that command to put four camera views to all four corners of the screen and i can't get them to update at sync times. Can someone help me with this?

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Rich Dersheimer

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Posted: 8th Feb 2011 16:45

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To set camera 1 to the top left quarter of the screen, use

set camera view 1,0,0,screen width()/2,screen height()/2

That matches what you are doing with the other three cameras.

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nruser

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Joined: 22nd Dec 2007

Location: Serbia

Posted: 8th Feb 2011 17:21

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i have tried that but then there is no viewport in that corner, look in camera example in help files to see the problem. Also from all four viewports only one that is assigned to camera 0 is positioned and working correctly from code above.

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DVader

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Joined: 28th Jan 2004

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Posted: 8th Feb 2011 17:38

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Well I have had a quick try and it seems to work here ok.

+ Code Snippet

Rem Project: cameratest
Rem Created: Tuesday, February 08, 2011

Rem ***** Main Source File *****
sync on
for n= 1 to 3
make camera n
next n

make object cube 1,100
x#=object position x(1)
y#=object position y(1)
z#=object position z(1)

position camera 1,500,10,500
point camera 1,x#,y#,z#

position camera 2,0,20,-400
point camera 2,x#,y#,z#

position camera 3,-300,500,-300
point camera 3,x#,y#,z#

set camera view 0,0,0,320,240
set camera view 1,321,0,640,240
set camera view 2,0,241,320,480
set camera view 3,321,241,640,480
cls 100
do
    inc rot#,.1
    yrotate object 1,wrapvalue(rot#)    
    sync
LOOP

That creates 4 windows at the correct co-ords to make 4 windows. I haven't used screen width but merely put in the values manually. I cannot see a problem to change it to use screen width though.

http://s6.bitefight.org/c.php?uid=103081

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Green Gandalf

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Joined: 3rd Jan 2005

Playing: Malevolence:Sword of Ahkranox, Skyrim, Civ6.

Posted: 8th Feb 2011 17:54

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Don't forget to use

+ Code Snippet

autocam off

before doing anything with cameras.

Something like this (plus Rich Dersheimer's suggestion):

set display mode desktop width(), desktop height(), 32
sync on : sync : sync
autocam off
EditorViews()
ViewPorts()
make object cube 1, 50
repeat
  sync
until spacekey()
end

`setup editor views
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function EditorViews()
  `make cameras for viewports
  color backdrop 0, rgb(0, 0, 60) ` added for demo purpose only
  make camera 1
  color backdrop 1, rgb(0, 60, 0) ` added for demo purpose only
  make camera 2
  color backdrop 2, rgb(60, 0, 0) ` added for demo purpose only
  make camera 3
  color backdrop 3, rgb(0, 50, 40) ` added for demo purpose only
  `setup cameras
  `perspective view
  set camera range 0,0.1,1000000
  position camera 0,-500,250,-250
  point camera 0,0,0,0
  `top view
  position camera 1,0,500,0
  point camera 1,0,0,0
  `side view
  position camera 2,-500,0,0
  point camera 2,0,0,0
  `front view
  position camera 3,0,0,500
  point camera 3,0,0,0
endfunction

`setup editor viewports
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function Viewports()
  `setup viewports
  `perspective view
  set camera view 0,screen width()/2,screen height()/2,screen width(),screen height()
  `top view
  set camera view 1,0,0,screen width()/2,screen height()/2
  `side view
  set camera view 2,screen width()/2,0,screen width(),screen height()/2
  `front view
  set camera view 3,0,screen height()/2,screen width()/2,screen height()
  
  `select default camera
  set current camera 0
endfunction

+ Code Snippet

set display mode desktop width(), desktop height(), 32
sync on : sync : sync
autocam off
EditorViews()
ViewPorts()
make object cube 1, 50
repeat
  sync
until spacekey()
end

`setup editor views
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function EditorViews()
  `make cameras for viewports
  color backdrop 0, rgb(0, 0, 60) ` added for demo purpose only
  make camera 1
  color backdrop 1, rgb(0, 60, 0) ` added for demo purpose only
  make camera 2
  color backdrop 2, rgb(60, 0, 0) ` added for demo purpose only
  make camera 3
  color backdrop 3, rgb(0, 50, 40) ` added for demo purpose only
  `setup cameras
  `perspective view
  set camera range 0,0.1,1000000
  position camera 0,-500,250,-250
  point camera 0,0,0,0
  `top view
  position camera 1,0,500,0
  point camera 1,0,0,0
  `side view
  position camera 2,-500,0,0
  point camera 2,0,0,0
  `front view
  position camera 3,0,0,500
  point camera 3,0,0,0
endfunction

`setup editor viewports
`camera 0 is default camera, and it will be used for perspective view
`camera 1 - top view
`camera 2 - side view
`camera 3 - front view
function Viewports()
  `setup viewports
  `perspective view
  set camera view 0,screen width()/2,screen height()/2,screen width(),screen height()
  `top view
  set camera view 1,0,0,screen width()/2,screen height()/2
  `side view
  set camera view 2,screen width()/2,0,screen width(),screen height()/2
  `front view
  set camera view 3,0,screen height()/2,screen width()/2,screen height()
  
  `select default camera
  set current camera 0
endfunction

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DVader

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Posted: 8th Feb 2011 18:14 Edited at: 8th Feb 2011 18:16

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Yes, I left it simply to avoid positioning the first camera. Just lazy for the purposes of this quick demo. Autocam, can cause problems and confusion!

http://s6.bitefight.org/c.php?uid=103081

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nruser

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Joined: 22nd Dec 2007

Location: Serbia

Posted: 8th Feb 2011 21:45

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ok i have fixed the problem with views but now i have new problem what should i do to get all viewports to show same grid that is drawn with d3d plugin when i use draw to camera or such i get my editor crashing with error "memory could not be read at address..."? is there some way to get this to work? because this is a problem only with the grid i can see the cube from code above but grid crashes.

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DVader

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Posted: 12th Feb 2011 22:11

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It may be the plugin haveing an issue with multiple camera's maybe, I couldn't say. Could you not just use a matrix for a grid? It is a fairly easy way to display a grid of any size and depth.

http://s6.bitefight.org/c.php?uid=103081

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