Shadow!!

Blitz3D Forums/Blitz3D Programming/Shadow!!

Yue	(Posted 2011) [#1]

The only way I find to learn is trial and error, is my only way of understanding things because my native language translators not help me much.

I can say with certainty that I am glad to understand how to make shadows blitz3d without external libs, and sometimes I do not think there is any difference with Fastext.

Well the fact is that I need to tell me how to remove the box of the camera and the camera that displays projected shadow.

A greeting.

Warner

(Posted 2011) [#2]

1. hide view camera, render shadow camera
2. copy screen to texture
3. hide shadow camera, render view camera
4. Flip

Yue	(Posted 2011) [#3]

=) thank

Graphics3D 800,600,32,0
SetBuffer BackBuffer()
Global Xscale#=1*(.8/3)

Global Sombra = CreateTexture(256,256,16+32)
;===============================
AmbientLight 64,64,64
Global Camara = CreateCamera()
Global Terreno = CreateCube()
Global Sol = CreateLight()


PositionEntity Camara, 0,6,-12
ScaleEntity Terreno, 50,1,50
RotateEntity Sol, 90,0,0



Global Cubo = CreateCube()
PositionEntity Cubo,0,4,0
EntityColor Cubo,255,0,0



;==================================
Global S_Camara = CreateCamera()
CameraViewport S_Camara,0,0,256,256
CameraProjMode S_Camara,2
CameraZoom S_Camara,.3

PositionEntity S_Camara,0,200,0
HideEntity S_Camara


EntityTexture Terreno,Sombra
Repeat
	TurnEntity Cubo,1,.1,0
	PointEntity S_Camara,Cubo
	Actualizar()
	RenderWorld 
	
	Text 0,0,TrisRendered()
	Flip
	
	
Until KeyHit(1)
End 


Function Actualizar()
	
	SetBuffer TextureBuffer( Sombra) 
	Color 255,255,255
	Rect 0,0,TextureWidth(Sombra)+1,TextureHeight(Sombra)+1
	SetBuffer BackBuffer()
	
	ShowEntity S_Camara
	HideEntity Camara
	
	EntityColor Cubo,64,64,64
	EntityFX Cubo,1+8
	
	
	
	RenderWorld()
	CopyRect 0,0,256,256,0,0,BackBuffer(),TextureBuffer(Sombra)
	EntityColor Cubo,255,0,0
	EntityFX Cubo,0
	
	
	For s=1 To CountSurfaces(Terreno) 
		surf=GetSurface(Terreno,s) 
		For v=0 To CountVertices(surf)-1 
			TFormPoint VertexX(surf,v),VertexY(surf,v),VertexZ(surf,v),Terreno,S_Camara
			VertexTexCoords surf,v,(TFormedX()/Xscale#)/32+0.5,1-((TFormedY()/Xscale#)/32+.5) 
		Next 
	Next 
	
	
	
	
	
	
	HideEntity S_Camara
	ShowEntity Camara
	
	
	
	
End Function

Last edited 2011