;
; Variable screen filter static/interference effect demo.
;
; By Big10p (A.K.A. Chris Chadwick) 2004
;
Graphics3D 800,600,32
WireFrame 0
AntiAlias 0
SeedRnd MilliSecs()
fps_timer = CreateTimer(60)
; Create fuzz texture.
fuzz_tex = CreateTexture(128,128)
SetBuffer TextureBuffer(fuzz_tex)
For n = 1 To 5000
c = Rand(0,255)
Color c,c,c
Plot Rand(0,127),Rand(0,127)
Next
; Create line texture.
line_tex = CreateTexture(128,128)
SetBuffer TextureBuffer(line_tex)
Color 255,255,255
Line 0,50,127,50
Color 128,128,128
Line 0,51,127,51
Line 0,49,127,49
SetBuffer BackBuffer()
; Lights, camera!
;
piv = CreatePivot()
cam = CreateCamera(piv)
PositionEntity cam,0,5,-5
PointEntity cam,piv
light = CreateLight(1,cam)
RotateEntity light,45,45,0
; Create static filter.
;
filter = create_quad(5)
ScaleMesh filter,2,2,1
EntityFX filter,1
EntityParent filter,cam
TextureBlend fuzz_tex,5
TextureBlend line_tex,3
EntityTexture filter,fuzz_tex,0,0
EntityTexture filter,line_tex,0,1
PositionEntity filter,EntityX(cam,1),EntityY(cam,1),EntityZ(cam,1),1
RotateEntity filter,EntityPitch(cam),EntityYaw(cam),EntityRoll(cam),1
MoveEntity filter,0,0,1.01
EntityOrder filter,-1
filter_alpha# = 0.5
line_scroll# = 0.0
; Create scene objects.
;
ground = CreateCube()
ScaleMesh ground,10,.1,10
EntityColor ground,100,100,200
PositionEntity ground,0,-2,0
EntityAlpha ground,.4
mirror = CreateMirror()
PositionEntity mirror,0,-2,0
ball = CreateSphere(16)
cube = CreateCube()
EntityColor cube,255,0,0
PositionEntity cube,4,0,0
cone = CreateCone(16)
EntityColor cone,0,255,0
PositionEntity cone,-4,0,0
cylinder = CreateCylinder(16)
EntityColor cylinder,0,0,255
PositionEntity cylinder,0,0,4
thing = CreateSphere(3)
EntityColor thing,255,255,0
PositionEntity thing,0,0,-4
info$ = "Press up/down ARROW KEYS to alter effect strength"
; --- Main loop ---
While Not KeyHit(1)
TurnEntity piv,0,.5,0
; Set filter alpha (visibility).
;
If KeyDown(200) Then filter_alpha = filter_alpha + .01
If KeyDown(208) Then filter_alpha = filter_alpha - .01
If filter_alpha > 1.0
filter_alpha = 1.0
ElseIf filter_alpha < 0
filter_alpha = 0
EndIf
EntityAlpha filter,filter_alpha
; Update filter textures.
;
PositionTexture fuzz_tex,Rnd(0,1),Rnd(0,1)
PositionTexture line_tex,0,line_scroll
line_scroll = (line_scroll + .01) Mod 1.0
RenderWorld
Color 255,0,0
Text 401,10,info$,1
Text 399,10,info$,1
Text 401,9,info$,1
Text 401,11,info$,1
Color 255,255,0
Text 400,10,info$,1
WaitTimer(fps_timer)
Flip(1)
Wend
End
Function create_quad(tex_scale#)
m = CreateMesh()
s = CreateSurface(m)
AddVertex s,-1,1,0, 0,0
AddVertex s,1,1,0, tex_scale,0
AddVertex s,-1,-1,0, 0,tex_scale
AddVertex s,1,-1,0, tex_scale,tex_scale
AddTriangle s,0,1,3
AddTriangle s,0,3,2
Return m
End Function |
