Computer graphics with Open GL. by Donald D. Hearn, M. Pauline Baker, Warren Carithers PDF

By Donald D. Hearn, M. Pauline Baker, Warren Carithers

ISBN-10: 1292024259

ISBN-13: 9781292024257

Computer snap shots with OpenGL, 4/e is acceptable for junior-to graduate-level classes in computing device graphics.

Assuming no heritage in special effects, this junior-to graduate-level path provides easy ideas for the layout, use, and figuring out of special effects platforms and functions. The authors, professionals of their box, supply an built-in method of two-dimensional and third-dimensional snap shots issues. A complete clarification of the preferred OpenGL programming package deal, besides C++ programming examples illustrates purposes of a few of the capabilities within the OpenGL easy library and the similar GLU and GLUT packages.

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Example text

And the main function contains the GLUT functions for setting up the display window and getting our line segment onto the screen. Figure 3 shows the display window and line segment generated by this program. FIGURE 3 The display window and line segment produced by the example program. 0); // Set display-window color to white. glMatrixMode (GL_PROJECTION); // Set projection parameters. 2); glBegin (GL_LINES); glVertex2i (180, 15); glVertex2i (10, 145); glEnd ( ); glFlush ( ); // Clear display window.

This header file must be listed before the OpenGL and GLU header files because it contains macros needed by the Microsoft Windows version of the OpenGL libraries. h because GLUT ensures that these will be included correctly. ) On some systems, the header files for OpenGL and GLUT routines are found in different places in the filesystem. h> 35 Computer Graphics Software In addition, we will often need to include header files that are required by the C++ code. h> With the ISO/ANSI standard for C++, these header files are called cstdio, cstdlib, and cmath.

It is not a dynamically-allocated string, so it must not be deallocated by our program. It also must not be modified by our program (hence the const modifier on the declaration of string). We can easily encapsulate these function calls into a general error-reporting function in our program. = GL_NO_ERROR) { string = gluErrorString (code); fprintf( stderr, "OpenGL error: %s\n", string ); } return code; } We encourage you to use a function like this in the OpenGL programs you develop. It is usually a good idea to check for errors at least once in your display callback routine, and more frequently if you are using OpenGL features you have never used before, or if you are seeing unusual or unexpected results in the image your program produces.

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Computer graphics with Open GL. by Donald D. Hearn, M. Pauline Baker, Warren Carithers

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