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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The size is measured in pixels.
Kilgard was releasing updates on a regular basis. In my tests freeglht continued to process the events that were already queued so performing any cleanup before actually getting out of the event loop could crash the application. Also I was only able to set GameMode when I provided all four fields in mode string.
Application programmers should note that if they have specified the “continue execution” action on window closure, freeglut will continue to call the idle callback after the user has closed a window by clicking on the “x” in the window header bar. Two functions have been added to render a wireframe and a freegut rhombic dodecahedron. A possible usage of this function is when the user presses the ESC key. Freeglut sets the current window to the window which is about to be closed when the callback is invoked.
The freeblut and the glutWindowStatusFunc functions ai the window’s visibility and windowStatus callbacks for the current window. Because the font is a stroke font, the width of an individual character is a floating-point number. The glutWireDodecahedron and glutSolidDodecahedron functions render a dodecahedron whose corners are each a distance of sqrt 3 from the origin.
Hence a call to glutSetWindow is required, as shown in the code snippet below:. Just skimmed through it and found this tutorial.
The glutWireTeapot and glutSolidTeapot functions render a teapot of the desired size, centered aip the origin. When you create a window with position x,y and size w,hthe upper left hand corner of the outside of the window the non-client area is at x,y and the size of the drawable client area is w,h. If there isn’t a one stop shop, then please list the set of references I should use and what the strengths of each one is. It may leave only the inner nested loop or it may leave both loops.
Normally a window system displays a title for every top-level window in the system. Calls to these functions are ignored for gamemode and child windows. It contains latest references for current Freeglut.
GLUT and FreeGLUT
With freeglut it is possible to specify what happens when a user closes a window. This documentation specifies the application program interface to the freeglut library. Xavier Ho 8, 6 37 This prevented the execution of cleanup code, or could cause problems in multiple window setups.
The glutBitmapWidth function returns the width in pixels of a single bitmapped character in the specified font. Please note that you must subscribe before you can post to our mailing lists. If the string contains one or more carriage returns, freeglut calculates the widths in pixels of the lines separately and returns the largest width. If you want to write your own event loop I suggest you drop the idle func and use the following event processing cycle:.
Another function, glutLeaveMainLoophas also been added to allow the application to tell freeglut to clean up and close down.
The glutKeyboardUpFunc function specifies the function that freeglut will call when the user releases a key from the keyboard. The glutStrokeWidth function returns the width of the given character in the specified stroke font.
In GLUT, there was absolutely no way for the application programmer to have control return from the glutMainLoop function to the calling function. The glutPositionFunc function sets the window’s zpi callback.
This way, you can use special aptitudes of Freeglut like controlling your own GL loop with glutMainLoopEventwhich is invaluadble when you’re using Freeglut with others libraries. You can easily help out by forking the unofficial clone of our sourceforge.
GLUT however is not free of criticism. The glutWireRhombicDodecahedron and glutSolidRhombicDodecahedron functions draw a wireframe and solid rhombic dodecahedron twelve-sided semi-regular solid respectively.
The glutCloseFunc function sets the window’s close callback. One corner is on the positive X-axis and another is in the X-Y plane with a positive Y-coordinate. Freeglut sets the current window to the window which is active when the callback is invoked.
The glutMainLoopEvent function processes a single iteration in the freeglut event loop. Useful for rerouting to another output sink e.
Your application’s resource file should contain the line: The functions generate normals appropriate for lighting but, except for the teapot functions, do not generate texture coordinates. Freeglut calls the special key press callback when the user presses a special key. Because the font is bitmapped, the height is an exact integer.
Here’s a list which is likely incomplete:. This teapot, teacup and teaspoon are rendered with their front facing polygon vertices freevlut clockwise. The torus is circularly symmetric about the Z-axis and starts at the positive X-axis.
The glutWireSphere and glutSolidSphere functions draw a wireframe and solid sphere respectively.
The glutBitmapLength function returns the width in pixels of the given character string in the specified bitmap font. It calls glTranslatef to advance the cursor by the width of a character and to render carriage returns when appropriate. If you do not register a wheel callback, wheel events will be reported as mouse buttons.
The important ones are summarized here. Libs that work great with OpenGL Next: Its faces are normal to the coordinate directions.