glutCopyColormap(3GLUT) GLUT glutCopyColormap(3GLUT)NAMEglutCopyColormap - copies the logical colormap for the
layer in use from a specified window to the current win
dow.
SYNTAX
void glutCopyColormap(int win);
ARGUMENTS
win The identifier of the window to copy the logical
colormap from.
DESCRIPTIONglutCopyColormap 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 col
ormap with glutSetColor since that will force an actual
copy of the colormap if it was previously copied by refer
ence. 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)
GLUT 3.7 1
