; CameraRange Example
; -------------------

Graphics3D 640,480,0,2
SetBuffer BackBuffer()

camera=CreateCamera()
PositionEntity camera,0,2,0

light=CreateLight()
RotateEntity light,45,45,0

; Textured ground plane gives a sense of distance
plane=CreatePlane()
ground_tex=LoadTexture("media/MossyGround.BMP")
ScaleTexture ground_tex,4,4
EntityTexture plane,ground_tex

; An avenue of pillars marching into the distance shows where the far plane clips
For z=10 To 150 Step 10
    pillar=CreateCylinder()
    ScaleEntity pillar,0.5,3,0.5
    PositionEntity pillar,-4,3,z
    pillar=CreateCylinder()
    ScaleEntity pillar,0.5,3,0.5
    PositionEntity pillar,4,3,z
Next

far_range#=50

While Not KeyDown(1)

    ; Press [ / ] to pull the far clipping plane closer or push it away
    If KeyDown(26) And far_range>5 Then far_range=far_range-0.5
    If KeyDown(27) And far_range<300 Then far_range=far_range+0.5

    ; Apply the near and far clipping range to the camera
    CameraRange camera,1,far_range

    ; Arrow keys move the camera
    If KeyDown(200) Then MoveEntity camera,0,0,0.1
    If KeyDown(208) Then MoveEntity camera,0,0,-0.1
    If KeyDown(203) Then TurnEntity camera,0,1,0
    If KeyDown(205) Then TurnEntity camera,0,-1,0

    RenderWorld

    Text 0,0,"Arrow keys: move camera   [ / ]: change far range   Esc: exit"
    Text 0,20,"Distant pillars vanish once they pass the far clipping plane"
    Text 0,40,"CameraRange camera,1,"+far_range

    Flip

Wend

End