Draw Object to Back - GameCreators Forum

Author

Message

Mr Squishy

18

Years of Service

User Offline

Joined: 25th Feb 2006

Location:

Posted: 19th Apr 2006 02:32

Link

Using dbDisableObjectZDepth i have been able to draw objects to "the front of" the screen for things like the hud and buttons and so fourth, but i cant get objects to draw to "the back," like for skyboxs.

I saw while searching these forums that dbDisableObjectZRead may be used for this, yet i am not so sure how to use this function and everything seems to draw to front when i use it. How can i draw an object behind everything else, reduardless of its position?

Keep it simple.
Otherwise, you may not be clever enough.

Back to top

Profile PM

Lost in Thought

20

Years of Service

User Offline

Joined: 4th Feb 2004

Location: U.S.A. : Douglas, Georgia

Posted: 19th Apr 2006 03:57

Link

They draw by image number when you use disable object zread. Make sure your objects are texture in the right order.

Back to top

Profile PM Email

Mr Squishy

18

Years of Service

User Offline

Joined: 25th Feb 2006

Location:

Posted: 19th Apr 2006 07:04

Link

image number huh, that sorta sux, or maybe i just dont get how i should use that.

so what does disable object z depth do? is it by image numbers as well.

also dbDisableObjectZWrite, dbDisableObjectBias and dbEnableObjectZBias; what do these do?

one last thing is it the image number or the order that you texture the objects in that controls the z order?

thanks for your help.

Keep it simple.
Otherwise, you may not be clever enough.

Back to top

Profile PM

Lost in Thought

20

Years of Service

User Offline

Joined: 4th Feb 2004

Location: U.S.A. : Douglas, Georgia

Posted: 19th Apr 2006 07:10

Link

With disableobjectzread it is the image number. I have never heard of objectzbias though. Disableobject zwrite just doesn't write anything to the z buffer, but is drawn as normal (from z depth), this way it doesn't affect other objects behind it.

Back to top

Profile PM Email

Mr Squishy

18

Years of Service

User Offline

Joined: 25th Feb 2006

Location:

Posted: 19th Apr 2006 07:32

Link

so in essence my only two choices with sky boxes are:
1) Make it real big and set the camera distance also quite large.
and
2) Make it any size i want, disable z read and make sure that it is the first texture, object and object which is textured.

Is this correct?

Keep it simple.
Otherwise, you may not be clever enough.

Back to top

Profile PM

IanM

Retired Moderator

22

Years of Service

User Offline

Joined: 11th Sep 2002

Location: In my moon base

Posted: 19th Apr 2006 15:21

Link

Make it any size you want, disable z write and make sure that it is the first object created in the current set of displayable objects.

It's unfortunate, but the only control we have over the rendering order is the order that we create objects in.

For free Plug-ins and source code http://www.matrix1.demon.co.uk

Back to top

Profile PM Email Website

Lost in Thought

20

Years of Service

User Offline

Joined: 4th Feb 2004

Location: U.S.A. : Douglas, Georgia

Posted: 19th Apr 2006 15:44

Link

If the Game SDK works like DBP you can use the image numbers with disable object zread to make them draw in whatever order you want. No matter which order they were created in.

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`make plain to use for drawing to the back
make object plain 1,12,8
texture object 1, 1
set object transparency 1,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5
`draw in front
make object plain 3,500,500
position object 3, 0, -50, 1000
texture object 3, 3
disable object zread 3
set object transparency 3, 1

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	if returnkey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

+ Code Snippet

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`make plain to use for drawing to the back
make object plain 1,12,8
texture object 1, 1
set object transparency 1,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5
`draw in front
make object plain 3,500,500
position object 3, 0, -50, 1000
texture object 3, 3
disable object zread 3
set object transparency 3, 1

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	if returnkey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

Works the same as:

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`draw in front
make object plain 3,500,500
position object 3, 0, -50, 1000
texture object 3, 3
disable object zread 3
set object transparency 3, 1
`make plain to use for drawing to the back
make object plain 1,12,8
texture object 1, 1
set object transparency 1,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	if returnkey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

+ Code Snippet

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`draw in front
make object plain 3,500,500
position object 3, 0, -50, 1000
texture object 3, 3
disable object zread 3
set object transparency 3, 1
`make plain to use for drawing to the back
make object plain 1,12,8
texture object 1, 1
set object transparency 1,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	if returnkey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

And this:

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`make plain to use for drawing to the back
make object plain 3,12,8
texture object 3, 1
set object transparency 3,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5
`draw in front
make object plain 1,500,500
position object 1, 0, -50, 1000
texture object 1, 3
disable object zread 1
set object transparency 1, 1

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	if returnkey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

+ Code Snippet

`make textures so you don't need any media
create bitmap 1,screen width(),screen height()
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back"
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
print "Testing Draw To Back : Testing Draw To Back : Testing Draw To Back" 
get image 1,0,0,screen width(),screen height()
cls
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
print "Object : Object : Object : Object : Object : Object : Object"
get image 2,0,0,screen width()/2,screen height()/2
cls
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
print "Testing Draw To Front : Testing Draw To Front : Testing Draw To Front : Testing Draw To Front"
get image 3,0,0,screen width()/2,screen height()/5
cls
delete bitmap 1
set current bitmap 0

`Here is actual code
sync on: sync rate 60
autocam off
color backdrop 0
position camera 0,0,-7.7
`make plain to use for drawing to the back
make object plain 3,12,8
texture object 3, 1
set object transparency 3,1
`make object for middle drawing
make object sphere 2,5
texture object 2, 2
position object 2,0,0,5
`draw in front
make object plain 1,500,500
position object 1, 0, -50, 1000
texture object 1, 3
disable object zread 1
set object transparency 1, 1

direction = 1 
do
	if direction = 1
		position object 2,0,0,object position z(2) + .05
		if object position z(2) >= 7
			direction = 0
		endif
	endif
	if direction = 0
		position object 2,0,0,object position z(2) - .05
		if object position z(2) <= -2
			direction = 1
		endif
	endif
	if spacekey() = 0
		disable object zread 3
	else
		enable object zread 3
	endif
	if returnkey() = 0
		disable object zread 1
	else
		enable object zread 1
	endif
	set cursor 5,5
	print object position z(2)
	set cursor 5,20
	if object position z(2) >= 2.5
		print "Sphere is behind plain"
	endif
	if object position z(2) <= 1
		print "Sphere is in front of plain"
	endif
	
	sync
loop

It doesn't even matter what order the images are loaded in. Loaded objects with disable object zread will draw behind created ones with disable object zread unless you retexture the loaded objects. Beacuse otherwise they will have negative image numbers and be lower.

Back to top

Profile PM Email

Miguel Melo

19

Years of Service

User Offline

Joined: 8th Aug 2005

Location:

Posted: 19th Apr 2006 23:29 Edited at: 19th Apr 2006 23:31

Link

Quote: "I have never heard of objectzbias though. "

I havent heard of ZBias for a good 10 years now, but if I remember correctly from DX 5 times or whatever, it allows you to solve z-conflicts. So when you have, say, two vertical planes on Z = 2 as you move the camera you'll see a lot of tearing as bits of one and the other show through. If you set zbias on them (if I remember correctly, back then there were 8 levels) the one with the biggest bias is always drawn closer to the camera even though they are coplanar in 3d space.

My memory isn't what it used to be though....

I have vague plans for World Domination

Back to top

Profile PM

Freddy 007

19

Years of Service

User Offline

Joined: 30th Nov 2004

Location: Denmark

Posted: 20th Apr 2006 21:43

Link

I think Mr. Melo is right. This is taken from the dbpro help files:

+ Code Snippet

ENABLE OBJECT ZBIAS 

This command will enable the setting of a Z-Bias slope and depth value, used to alter how an object renders to the screen based on its 
own Z buffer value and the Z buffer values already present in the scene. This command can be used to favour rendering one object 
over another, where both objects are in identical positions in the scene. 

Syntax 

ENABLE OBJECT ZBIAS Object Number, Slope Scale, Depth

Konvurd - A 3d model viewer and converter

Back to top

Profile PM Email

Miguel Melo

19

Years of Service

User Offline

Joined: 8th Aug 2005

Location:

Posted: 20th Apr 2006 23:15

Link

Woah! I didn't think I still had it in me.. LOL

I have vague plans for World Domination

Back to top

Profile PM

Sorry your browser is not supported!

Dark GDK / Draw Object to Back