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Diffstat (limited to 'src/libnoiseforjava/util/MiscUtilities.java')
-rw-r--r-- | src/libnoiseforjava/util/MiscUtilities.java | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/libnoiseforjava/util/MiscUtilities.java b/src/libnoiseforjava/util/MiscUtilities.java new file mode 100644 index 0000000..a18aa6b --- /dev/null +++ b/src/libnoiseforjava/util/MiscUtilities.java @@ -0,0 +1,52 @@ +/*
+ * Copyright (C) 2003, 2004 Jason Bevins (original libnoise code)
+ * Copyright 2010 Thomas J. Hodge (java port of libnoise)
+ *
+ * This file is part of libnoiseforjava.
+ *
+ * libnoiseforjava is a Java port of the C++ library libnoise, which may be found at
+ * http://libnoise.sourceforge.net/. libnoise was developed by Jason Bevins, who may be
+ * contacted at [email protected] (for great email, take off every 'zig').
+ * Porting to Java was done by Thomas Hodge, who may be contacted at
+ * [email protected] (remove every 'zag').
+ *
+ * libnoiseforjava is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * libnoiseforjava is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * libnoiseforjava. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package libnoiseforjava.util;
+
+public class MiscUtilities
+{
+
+ // Performs linear interpolation between two 8-bit channel values.
+ public static short blendChannel (int red, int red2, float alpha)
+ {
+ double c0 = (float)red / 255.0;
+ double c1 = (float)red2 / 255.0;
+ return (short)(((c1 * alpha) + (c0 * (1.0f - alpha))) * 255.0f);
+ }
+
+ // Performs linear interpolation between two colors
+ public static ColorCafe linearInterpColor (ColorCafe color0, ColorCafe color1,
+ float alpha)
+ {
+ ColorCafe color = new ColorCafe(
+ blendChannel (color0.red, color1.red, alpha),
+ blendChannel (color0.green, color1.green, alpha),
+ blendChannel (color0.blue, color1.blue, alpha),
+ blendChannel (color0.alpha, color1.alpha, alpha)
+ );
+ return color;
+ }
+
+}
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