; BrushOcclusionMap Example
; -------------------------
; Requires Extended mode.

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

camera=CreateCamera()
PositionEntity camera,0,0,-5

light=CreateLight()
RotateEntity light,35,-30,0

; Occlusion darkens image-based ambient light, so give the brush
; a bright environment map to be occluded
environment=CreateTexture(64,32,1+8+32)
SetBuffer TextureBuffer(environment)
ClsColor 200,210,235
Cls
SetBuffer BackBuffer()

; Draw the occlusion map: white (open) with dark baked-shadow spots
ao=CreateTexture(64,64,1+8)
SetBuffer TextureBuffer(ao)
ClsColor 255,255,255
Cls
Color 70,70,70
Oval 16,16,32,32,True
SetBuffer BackBuffer()

brush=CreateStandardBrush(220,170,100)
BrushEnvironmentMap brush,environment
sphere=CreateSphere(32)

strength#=1.0

While Not KeyDown(1)

    ; Press [ / ] to change the occlusion strength
    If KeyDown(26) And strength>0 Then strength=strength-0.01
    If KeyDown(27) And strength<1 Then strength=strength+0.01

    ; Apply the ambient-occlusion map and repaint the sphere
    BrushOcclusionMap brush,ao,0,strength
    PaintEntity sphere,brush

    TurnEntity sphere,0,0.3,0

    ; 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

    Color 255,255,255
    Text 0,0,"[ / ] : strength   Arrow keys: move camera   Esc: exit"
    Text 0,20,"BrushOcclusionMap brush,ao,0,"+strength+"   (0 disables the map)"

    Flip

Wend

FreeBrush brush
End