Section 3: library functions
glutPassiveMotionFunc – Sets the non-dragging (gliding?) mouse-motion callback. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutPassiveMotionFunc void( *callback )( int x int y ) Parameters Bf Em callback Ef Client mouse-glide hook. Description If you set this callback on a window, then every time that OpenGLUT detects a change in the mouse…
glutOverlayDisplayFunc – Defines the display hook for an overlay. Library OpenGLUT – windowcallback Synopsis In openglut.h Ft void Fn glutOverlayDisplayFunc void( *callback )( void ) Parameters Bf Em callback Ef Client hook for overlay redisplay. Description Bf Sy callback Ef is invoked by OpenGLUT to refresh an overlay, if OpenGLUT thinks that this is necessary….
glutMouseWheelFunc – Sets the mouse wheel callback for the current window. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutMouseWheelFunc void( *callback )( int wheel int direction int x int y ) Parameters Bf Em callback Ef Client hook for mouse wheel events. Description If the mouse wheel is spun over your (sub)window,…
glutMouseFunc – Sets the mouse-button callback for the current window. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutMouseFunc void( *callback )( int button int state int x int y ) Parameters Bf Em callback Ef Client hook for mouse-buttons. Description Whenever a mouse button is pressed or released in an OpenGLUT window,…
glutMotionFunc – Reports mouse-motion while a button is held. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutMotionFunc void( *callback )( int x int y ) Parameters Bf Em callback Ef Client hook for dragging mouse. Description This function reports the mouse position when the mouse is dragged starting from within your window….
glutMenuStatusFunc – Modern variant of glutMenuStateFunc() Library OpenGLUT – menucallback Synopsis In openglut.h Ft void Fn glutMenuStatusFunc void( *callback )( int status int x int y ) Parameters Bf Em callback Ef Client menu status hook. Description Broadly, OpenGLUT operates in two modes. At any given time, it is either in menu mode (with a…
glutMenuStateFunc – Deprecated variant of glutMenuStatusFunc() Library OpenGLUT – deprecated Synopsis In openglut.h Ft void Fn glutMenuStateFunc void( *callback )( int status ) Parameters Bf Em callback Ef Client menu status hook. Description Broadly, OpenGLUT operates in two modes. At any given time, it is either in menu mode (with a popup menu display, possibly…
glutMenuDestroyFunc – Destruction callback for menus. Library OpenGLUT – menucallback Synopsis In openglut.h Ft void Fn glutMenuDestroyFunc void( *callback )( void ) Parameters Bf Em callback Ef Client menu destruction hook. Description When a menu is destroyed, OpenGLUT will call this hook, if defined on that menu. This callback is Bf Em not Ef bound…
glutMainLoopEvent – Dispatches all pending events. Library OpenGLUT – mainloop Synopsis In openglut.h Ft void Fn glutMainLoopEvent void Description The general outline of this function is to first drain the queue of windowsystem events, in most cases dispatching each as it is found. After the queue is empty, we check for timer-based events, coalesced window…
glutMainLoop – The standard GLUT event loop entry point. Library OpenGLUT – mainloop Synopsis In openglut.h Ft void Fn glutMainLoop void Description This is the main driving force for an event-driven OpenGLUT program. It alternates between calling glutMainLoopEvent() to process pending events and then either sleeping or calling your idle function (see glutIdleFunc()). This function…
glutLeaveMainLoop – Breaks out of OpenGLUT’s glutMainLoop() Library OpenGLUT – mainloop Synopsis In openglut.h Ft void Fn glutLeaveMainLoop void Description This function allows you to unilaterally tell OpenGLUT that you are done and wish to exit. This is useful if you have also told OpenGLUT to return to you rather than to call exit() directly….
glutLeaveGameMode – Leave game mode, returning to normal desktop mode Library OpenGLUT – gamemode Synopsis In openglut.h Ft void Fn glutLeaveGameMode void Description Todo Documentation See Also glutGameModeString(3) glutEnterGameMode(3) glutLeaveGameMode(3) glutGameModeGet(3)
glutLayerGet – Allows you to get some overlay state/option variables. Library OpenGLUT – overlays Synopsis In openglut.h Ft int Fn glutLayerGet GLenum eWhat Parameters Bf Em eWhat Ef Enumerated parameter ID. Description Returns some useful information about layers. Or, it would be useful if layers were implemented… Bf Sy eWhat Ef may be given any…
glutKeyboardUpFunc – Sets the keyboard key release callback for the current window. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutKeyboardUpFunc void( *callback )( unsigned char key int x int y ) Parameters Bf Em callback Ef Client hook for ASCII key releases. Description This function provides a way to detect the release…
glutKeyboardFunc – Sets the Keyboard callback for the current window. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutKeyboardFunc void( * callback )( unsigned char key int x int y ) Parameters Bf Em callback Ef Client function for keyboard event. Description This callback registration allows you to handle traditional ASCII keyboard input….
glutJoystickFunc – Reports joystick state for the current window. Library OpenGLUT – input Synopsis In openglut.h Ft void Fn glutJoystickFunc void( *callback )( unsigned int buttons int xaxis int yaxis int zaxis ) int pollInterval Parameters Bf Em callback Ef Client function for joystick events Bf Em pollInterval Ef Approximate (minimum) millisecond interval Description The callback is…
glutInitWindowSize – Requests future windows to open at a given width/height.. Library OpenGLUT – window Synopsis In openglut.h Ft void Fn glutInitWindowSize int width int height Parameters Bf Em width Ef Width of future windows. Bf Em height Ef Height of future windows. Description This function allows you to request initial dimensions for future windows….
glutInitWindowPosition – Requests future windows to open at a given position. Library OpenGLUT – window Synopsis In openglut.h Ft void Fn glutInitWindowPosition int x int y Parameters Bf Em x Ef X coordinate. Bf Em y Ef Y coordinate. Description This function allows you to request an initial position for future windows. See Also glutPositionWindow(3)…
glutInitDisplayString – Set the window creation display mode. Library OpenGLUT – window Synopsis In openglut.h Ft void Fn glutInitDisplayString const char *displayMode Parameters Bf Em displayMode Ef Requested display mode string. Description glutInitDisplayString() permits you to define a display mode for subsequent windows that you open. In most regards, control is at least as fine…
glutInitDisplayMode – Set the window creation display mode. Library OpenGLUT – window Synopsis In openglut.h Ft void Fn glutInitDisplayMode unsigned int displayMode Parameters Bf Em displayMode Ef Requested display mode bitmask. Description glutInitDisplayMode() allows you to control the mode for subsequent OpenGLUT windows. Allowable Bf Sy displayMode Ef is a combination of: – Bf Sy…