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Man Pages


Manual Reference Pages  -  GLUTCOPYCOLORMAP (3)

NAME

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

CONTENTS

Syntax
Arguments
Description
Example
See Also
Author

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);

SEE ALSO

glutSetColor, glutGetColor, glutCreateWindow

AUTHOR

Mark J. Kilgard (mjk@nvidia.com)
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GLUT GLUTCOPYCOLORMAP (3GLUT) 3.7

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