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 9d31494ec..254eb7f04 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;
+}
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