CheckObjectVisibility()

Syntax

Result = CheckObjectVisibility(#Camera, ObjectID)

Checks if an object is visible within a camera view.

Parameters

#Camera	The camera to use.
ObjectID	The object to check. It can be one of the following type: - Entity : use EntityID() to get a valid ID. - Light : use LightID() to get a valid ID. - Node : use NodeID() to get a valid ID. - ParticleEmitter: use ParticleEmitterID() to get a valid ID. - BillboardGroup : use BillboardGroupID() to get a valid ID. - Text3D : use Text3DID() to get a valid ID.

Return value

Returns #True if object is within the selected camera view or #False if outside the visible area.

Example

  InitEngine3D()
  InitSprite()
  InitKeyboard()

  OpenWindow(0, 0, 0, 800, 600, "Object Visibility (Use arrows <--  --> and ESC to quit)", #PB_Window_ScreenCentered)
  OpenWindowedScreen(WindowID(0),0, 0, 800, 600)
  CreateCamera(0, 0, 0, 100, 100)

  CreateCube(0, 1)
  CreateTexture(0, 100, 100)
  If StartDrawing(TextureOutput(0))
    DrawingMode(#PB_2DDrawing_Gradient)
    CircularGradient(50, 50, 48)
    Circle(50, 50, 48)
    StopDrawing()
  EndIf

  CreateMaterial(0, TextureID(0))
  ScaleMaterial(0, 0.1, 0.1)
  CreateEntity(0, MeshID(0), MaterialID(0), 0, 0, -2)

  Repeat
  Repeat : Event = WindowEvent() : Until Event = 0
 
  RenderWorld()
  RotateEntity(0, 0.1, -0.3, 0.3, #PB_Relative)
  ExamineKeyboard()
  
  If KeyboardPushed(#PB_Key_Left)
    MoveEntity(0, -0.1, 0, 0,#PB_Relative)
  ElseIf  KeyboardPushed(#PB_Key_Right)
    MoveEntity(0, 0.1, 0, 0,#PB_Relative)
  EndIf
  
  If CheckObjectVisibility(0, EntityID(0)) = #False
    Debug "Can't see the object anymore"
  Else
    Debug "I see it !"
  EndIf
  
  FlipBuffers()
  Until KeyboardPushed(#PB_Key_Escape)

Supported OS

All