Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

glutCopyColormap

NAME
SYNTAX
ARGUMENTS
DESCRIPTION
EXAMPLE
SEE ALSO
AUTHOR

NAME

glutCopyColormap - copies the logical colormap for the layer in use from a specified window to the current window.

SYNTAX

void glutCopyColormap(int win);

ARGUMENTS

win

The identifier of the window to copy the logical colormap from.

DESCRIPTION

glutCopyColormap copies (lazily if possible to promote sharing) the logical colormap from a specified window to the current window’s layer in use. The copy will be from the normal plane to the normal plane; or from the overlay to the overlay (never across different layers). Once a colormap has been copied, avoid setting cells in the colormap with glutSetColor since that will force an actual copy of the colormap if it was previously copied by reference. glutCopyColormap should only be called when both the current window and the win window are color index windows.

EXAMPLE

Here is an example of how to create two color index GLUT windows with their colormaps loaded identically and so that the windows are likely to share the same colormap:

int win1, win2;

glutInitDisplayMode(GLUT_INDEX);
win1 = glutCreateWindow("first color index win");
glutSetColor(0, 0.0, 0.0, 0.0); /* black */
glutSetColor(1, 0.5, 0.5, 0.5); /* gray */
glutSetColor(2, 1.0, 1.0, 1.0); /* black */
glutSetColor(3, 1.0, 0.0, 0.0); /* red */
win2 = glutCreateWindow("second color index win");
glutCopyColormap(win1);

AUTHOR

Mark J. Kilgard (mjk@nvidia.com)

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.