PureBasic Forums - English

NodeFixedYawAxis(Node, #True, 0, 0, 0)

EnableExplicit

If InitEngine3D()
InitSprite()
InitMouse()
InitKeyboard()
Else
MessageRequester("Error", "Can Not init 3D engine !")
End
EndIf

Define.i TexFloor, MatFloor, MshFloor, EntFloor, MshCube, EntCube, Camera, Node, MouseX, MouseY, nodemode, quit, DebugFont, DebugSprite

If OpenWindow(0, 0, 0, 1024, 768, "3D Test", #PB_Window_SystemMenu|#PB_Window_ScreenCentered)
If Not OpenWindowedScreen(WindowID(0), 0, 0, WindowWidth(0), WindowHeight(0))
MessageRequester("Error", "Can not open windowed screen !")
End
EndIf
Else
MessageRequester("Error", "Can not open window !")
End
EndIf

TexFloor = CreateTexture(#PB_Any, 128, 128)
StartDrawing(TextureOutput(TexFloor))
Box( 0, 0, 128, 128, RGB(225,225,225))
Box(63, 0, 64, 64, RGB( 0, 0,128))
Box( 0,63, 64, 64, RGB( 0, 0,128))
StopDrawing()

MatFloor = CreateMaterial(#PB_Any, TextureID(TexFloor))
SetMaterialColor(MatFloor, #PB_Material_AmbientColor, RGB(175, 238, 238))

MshFloor = CreatePlane(#PB_Any, 1000, 1000, 1, 1, 10, 10)
MshCube = CreateCube(#PB_Any, 100)

EntFloor = CreateEntity(#PB_Any, MeshID(MshFloor), MaterialID(MatFloor), 0, 0, 0)
EntCube = CreateEntity(#PB_Any, MeshID(MshCube), MaterialID(MatFloor), 0, 100, -750)
RotateEntity(EntCube, 45, 45, 0)

Node = CreateNode(#PB_Any, 0, 64, 0)
;NodeFixedYawAxis(Node, #True, 0, 0, 0)

Camera = CreateCamera(#PB_Any, 0, 0, 100, 100)
MoveCamera(Camera, 0, 64, 0)

AmbientColor(RGB(0,0,128))

DebugSprite = CreateSprite(#PB_Any, 500, 100)
DebugFont = LoadFont(#PB_Any, "Courier New", 11)

Repeat

If ExamineKeyboard()
If KeyboardReleased(#PB_Key_F1)
If nodemode
nodemode = #False
DetachNodeObject(Node, CameraID(Camera))
Else
nodemode = #True
AttachNodeObject(Node, CameraID(Camera))
EndIf
ElseIf KeyboardReleased(#PB_Key_Escape)
quit = 1
EndIf
EndIf

If ExamineMouse()
MouseX = -MouseDeltaX() / 10
MouseY = -MouseDeltaY() / 10
EndIf

If nodemode
RotateNode(Node, MouseY, MouseX, 0, #PB_Relative)
Else
RotateCamera(Camera, MouseY, MouseX, 0, #PB_Relative)
EndIf

RenderWorld()

StartDrawing(SpriteOutput(DebugSprite))
DrawingMode(#PB_2DDrawing_Transparent)
DrawingFont(FontID(DebugFont))
FrontColor(RGB(255,255,0))
Box(0, 0, SpriteWidth(DebugSprite), SpriteHeight(DebugSprite), 0)
DrawText( 5, 5, "Direction/Node : x=" + StrF(NodePitch(Node),1) + ", y=" + StrF(NodeYaw(Node),1) + ", z=" + StrF(NodeRoll(Node),1))
DrawText( 5,25, "Direction/Camera: x=" + StrF(CameraPitch(Camera),1) + ", y=" + StrF(CameraYaw(Camera),1) + ", z=" + StrF(CameraRoll(Camera),1))
If nodemode
DrawText(5,45, "Node Mode - hit F1 to switch")
Else
DrawText(5,45, "Camera Mode - hit F1 to switch")
EndIf
StopDrawing()

DisplayTransparentSprite(DebugSprite, 0, 0)

FlipBuffers()

Until quit = 1

End

Tells the node whether to yaw around it's own local Y axis or a fixed axis of choice.

Remarks:
This method allows you to change the yaw behaviour of the node - by default, it yaws around it's own local Y axis when told to yaw with TS_LOCAL, this makes it yaw around a fixed axis. You only really need this when you're using auto tracking (see setAutoTracking, because when you're manually rotating a node you can specify the TransformSpace in which you wish to work anyway.

Parameters:
useFixed If true, the axis passed in the second parameter will always be the yaw axis no matter what the node orientation. If false, the node returns to it's default behaviour.
fixedAxis The axis to use if the first parameter is true.

Tells the camera whether to yaw around it's own local Y axis or a fixed axis of choice.

Remarks:
This method allows you to change the yaw behaviour of the camera

by default, the camera yaws around a fixed Y axis. This is often what you want - for example if you're making a first-person shooter, you really don't want the yaw axis to reflect the local camera Y, because this would mean a different yaw axis if the player is looking upwards rather than when they are looking straight ahead. You can change this behaviour by calling this method, which you will want to do if you are making a completely free camera like the kind used in a flight simulator.

Parameters:
useFixed If true, the axis passed in the second parameter will always be the yaw axis no matter what the camera orientation. If false, the camera yaws around the local Y.
fixedAxis The axis to use if the first parameter is true

by default, the camera yaws around a fixed Y axis. This is often what you want - for example if you're making a first-person shooter, you really don't want the yaw axis to reflect the local camera Y, because this would mean a different yaw axis if the player is looking upwards rather than when they are looking straight ahead. You can change this behaviour by calling this method, which you will want to do if you are making a completely free camera like the kind used in a flight simulator.