Pivot and mesh

Blitz3D Forums/Blitz3D Programming/Pivot and mesh

Grovesy

(Posted 2005) [#1]

Hi all,

Can someone please tell me what the CreatePivot is used for. I have taken some code from the castle demo and see it has a createpivot() but not sure why!

You can rotate meshes without a pivot, so why is it created?
In my version of the code, i don't use the CopyEntity so do i need to somehow associate the mesh with the pivot?

Function CreatePlayer.Soldier_t( x#,y#,z# )
	s.Soldier_t		= New Soldier_t
	s\entity		= CreatePivot()
	s\model 		= LoadMesh("Soldier.x")
	s\player_y		= y
	ScaleEntity 	s\model ,0.001,0.001,0.001
	PositionEntity 	s\entity, x, y, z
	EntityType 		s\entity, TYPE_PLAYER
	EntityRadius 	s\entity, 1.5
	ResetEntity 	s\entity
	Return s
End Function

thanks all

KuRiX

(Posted 2005) [#2]

A Pivot is just a 3d object with no mesh. It is for auxiliary process. You can move it, rotate it, etc...

For example you can set a pivot to be an invisible point where all your players must go, so just checking the distance with the pivot you know when has been reached...

The utilities are infinite...

Beaker

(Posted 2005) [#3]

Here is a very simple example of how/why it is useful:

Graphics3D 640,480
SetBuffer BackBuffer()

piv = CreatePivot()
box = CreateCube(piv)
MoveEntity box,6,0,0


cam = CreateCamera()
MoveEntity cam,0,0,-10

While Not KeyDown(1)
	TurnEntity piv,0,0, 1
	
	RenderWorld
	Flip
Wend
End

Grovesy

(Posted 2005) [#4]

Thanks Guys, I think that makes sense now. I'll add it to my project tonight.