diff options
Diffstat (limited to 'libXmu/src/Distinct.c')
| -rw-r--r-- | libXmu/src/Distinct.c | 178 |
1 files changed, 89 insertions, 89 deletions
diff --git a/libXmu/src/Distinct.c b/libXmu/src/Distinct.c index 254eb7f04..9d31494ec 100644 --- a/libXmu/src/Distinct.c +++ b/libXmu/src/Distinct.c @@ -1,89 +1,89 @@ -/*
-
-Copyright 1990, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-
-/*
- * Author: Keith Packard, MIT X Consortium
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <X11/Xlib.h>
-#include <stdlib.h>
-#include <X11/Xutil.h>
-#include <X11/Xmu/StdCmap.h>
-
-/*
- * Distinguishable colors routine. Determines if two colors are
- * distinguishable or not. Somewhat arbitrary meaning.
- */
-
-#define MIN_DISTINGUISH 10000.0
-
-Bool
-XmuDistinguishableColors(XColor *colors, int count)
-{
- double deltaRed, deltaGreen, deltaBlue;
- double dist;
- int i, j;
-
- for (i = 0; i < count - 1; i++)
- for (j = i + 1; j < count; j++)
- {
- deltaRed = (double)colors[i].red - (double)colors[j].red;
- deltaGreen = (double)colors[i].green - (double)colors[j].green;
- deltaBlue = (double)colors[i].blue - (double)colors[j].blue;
- dist = deltaRed * deltaRed +
- deltaGreen * deltaGreen +
- deltaBlue * deltaBlue;
- if (dist <= MIN_DISTINGUISH * MIN_DISTINGUISH)
- return False;
- }
- return True;
-}
-
-Bool
-XmuDistinguishablePixels(Display *dpy, Colormap cmap,
- unsigned long *pixels, int count)
-{
- XColor *defs;
- int i, j;
- Bool ret;
-
- for (i = 0; i < count - 1; i++)
- for (j = i + 1; j < count; j++)
- if (pixels[i] == pixels[j])
- return False;
- defs = (XColor *) malloc (count * sizeof (XColor));
- if (!defs)
- return False;
- for (i = 0; i < count; i++)
- defs[i].pixel = pixels[i];
- XQueryColors (dpy, cmap, defs, count);
- ret = XmuDistinguishableColors (defs, count);
- free ((char *) defs);
- return ret;
-}
+/* + +Copyright 1990, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +/* + * Author: Keith Packard, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/Xlib.h> +#include <stdlib.h> +#include <X11/Xutil.h> +#include <X11/Xmu/StdCmap.h> + +/* + * Distinguishable colors routine. Determines if two colors are + * distinguishable or not. Somewhat arbitrary meaning. + */ + +#define MIN_DISTINGUISH 10000.0 + +Bool +XmuDistinguishableColors(XColor *colors, int count) +{ + double deltaRed, deltaGreen, deltaBlue; + double dist; + int i, j; + + for (i = 0; i < count - 1; i++) + for (j = i + 1; j < count; j++) + { + deltaRed = (double)colors[i].red - (double)colors[j].red; + deltaGreen = (double)colors[i].green - (double)colors[j].green; + deltaBlue = (double)colors[i].blue - (double)colors[j].blue; + dist = deltaRed * deltaRed + + deltaGreen * deltaGreen + + deltaBlue * deltaBlue; + if (dist <= MIN_DISTINGUISH * MIN_DISTINGUISH) + return False; + } + return True; +} + +Bool +XmuDistinguishablePixels(Display *dpy, Colormap cmap, + unsigned long *pixels, int count) +{ + XColor *defs; + int i, j; + Bool ret; + + for (i = 0; i < count - 1; i++) + for (j = i + 1; j < count; j++) + if (pixels[i] == pixels[j]) + return False; + defs = (XColor *) malloc (count * sizeof (XColor)); + if (!defs) + return False; + for (i = 0; i < count; i++) + defs[i].pixel = pixels[i]; + XQueryColors (dpy, cmap, defs, count); + ret = XmuDistinguishableColors (defs, count); + free ((char *) defs); + return ret; +} |