FREEGLUT API PDF

Type, API. License · X Consortium. Website, FreeGLUT is an open-source alternative to the OpenGL Utility Toolkit (GLUT) library. These kept the API (all gluts functions are usually implemented exactly with the Two of the most common GLUT replacements are OpenGLUT and freeGLUT. It looks to me that Ubuntu has provided everything that the original web site http:// has provided. The api documentation.

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This open-source clone, which does not use any of the GLUT source code, has evolved into the present freeglut library. He should also be prepared to assist in the implementation. More functions return the widths of character strings and the font heights, in pixels for bitmapped fonts and in OpenGL units for the stroke fonts. This allows the application to control its own event loop and still use the freeglut windowing system. The coordinates taken by glutInitPosition and glutPositionWindowas well as the coordinates provided by FreeGLUT when it calls the glutPositionFunc callback, specify the top-left of the non-client area of the window.

Leave a Reply Cancel reply. The available options are: These queries return information about the current display mode if in GameMode, or about the requested display mode before entering GameMode:. The glutSpecialFunc function specifies the function that freeglut will call when the user presses a special key on the keyboard.

In general, no more than a single frame of rendering should be done in a single invocation of an idle callback. If you have problems with these packages, please contact their maintainers – we of the FreeGLUT team probably can’t help. Complaints about the lack of control on the event loop are abundant on the web. Before the first call to glutStrokeCharacter the application program should call the OpenGL transformation positioning and scaling functions to set the position of the character in the window.

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GLUT and FreeGLUT

Lastly, to support drawing these objects with shaders, three functions have been added with which users can provide the addresses of the Coordinate, Normal and Texture Coordinate vertex attribs: If defined at library not client app! For multi-monitor display setups, freeglut can be told on which monitor the gamemode window frfeglut be opened by providing the -display command line option to glutInit. This prevented the execution of cleanup code, or could cause problems in multiple window setups.

It calls glTranslatef to advance the cursor by the width of a character and to render carriage returns when appropriate. The glutKeyboardUpFunc function sets the window’s key release callback. However, various members of the community have put time and effort into providing source or binary rollups, and we thank them for their efforts. By using a function pointer returned from glutGetProcAddressthe application will avoid this hard dependency and be more portable and freeglu better with various implementations of OpenGL.

The glutMouseWheelFunc function sets the window’s mouse wheel callback. The glutPositionFunc function sets the window’s position callback. The glutSpaceballRotateFunc function is implemented in freeglut on X11 only.

Jesper k 34 GLUT was conceived by Mark Kilgard with the goal of providing a simple, yet powerful enough, toolkit to deal with the intricacies of the windowing system when building OpenGL applications. The glutWireTetrahedron and glutSolidTetrahedron functions draw a wireframe and solid tetrahedron four-sided Platonic solid respectively.

The freeglut Project :: API Documentation

With freeglut it is possible to specify what happens when a user closes a window. Before calling glutStrokeString the application program should call the OpenGL transformation positioning and scaling functions to set the position of the string in the window. The glutStrokeWidth function returns the width of the given character in the specified stroke font. Hence a call to glutSetWindow is required, as shown in the code snippet below:. The freeglut Programming Consortium January, The glutTabletButtonFunc function is not implemented in freeglutalthough the library does “answer the mail” to the extent that a call to the function will not produce an error.

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The following state variables can be set: Its faces are normal to the coordinate directions. Drawing should be done in the glutDisplayFunc callback. The glutWireRhombicDodecahedron and glutSolidRhombicDodecahedron functions render a rhombic dodecahedron whose corners are at most a distance of one from the origin. Hence a call to glutSetWindow is required, as shown in the code snippet below: Feel free to test by downloading a tarball of current trunkor grabbing a copy from svnand give us feedback on how it worked for you.

This is achieved with the following apo. The important ones are summarized here. Freeglut calls the mouse wheel callback when the user spins the mouse wheel. The glutStrokeCharacter function advances the cursor position by a call to glTranslatef and so the application does not need to call the OpenGL positioning functions again for successive characters on the same line. The glutCloseFunc function sets the window’s close callback.

API/ABI changes review for freeglut

Several new callbacks have been added and several callbacks which were specific to Silicon Graphics hardware have not been implemented. Freeglut seems to only work when the GameMode resolution is set to the full screen. A warning is issued and the request is ignored if the supplied font is a stroke font, or an unknown font.

Within this loop, freeglut polls the data entry devices keyboard, mouse, etc.

Leaving one field out did not change from window mode to GameMode.