1 files changed, 119 insertions, 0 deletions
diff --git a/src/libnoiseforjava/module/Gradient.java b/src/libnoiseforjava/module/Gradient.java
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+++ b/src/libnoiseforjava/module/Gradient.java
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+/*
+ * Copyright (C) 2003, 2004 Jason Bevins (original libnoise code)
+ * Copyright  2010 Thomas J. Hodge (java port of libnoise)
+ * Copyright 2012 Michael Nugent (This module)
+ *
+ * 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.module;
+
+/**
+ * User: mike nugent
+ * Date: 2/5/12
+ * Time: 4:40 PM
+ * URL: https://github.com/michaelnugent/libnoiseforjava
+ * Package: libnoiseforjava.module
+ */
+public class Gradient extends ModuleBase {
+
+    AXIS axis = AXIS.Y;
+
+    double inputMin = 0;
+    double inputMax = 255;
+
+    double scaledMin = -1;
+    double scaledMax = 1;
+
+    public enum AXIS {
+        X,
+        Y,
+        Z
+    };
+
+    public Gradient() {
+        super();
+    }
+
+    public Gradient(AXIS axis) {
+        super();
+        this.axis = axis;
+    }
+
+    public double getValue(double x, double y, double z) {
+        if (axis == AXIS.Y) {
+            double outy = scale(y, this.inputMin, this.inputMax, this.scaledMin, this.scaledMax);
+            return outy;
+        } else if (axis == AXIS.X) {
+            double outx = scale(x, this.inputMin, this.inputMax, this.scaledMin, this.scaledMax);
+            return outx;
+        } else {
+            double outz = scale(z, this.inputMin, this.inputMax, this.scaledMin, this.scaledMax);
+            return outz;
+        }
+    }
+
+    private double scale( double inVal, double inMin, double inMax, double min, double max ) {
+        double m = (max-min)/(inMax-inMin);
+        double c = min-inMin*m;
+        return m*inVal+c;
+    }
+
+    public AXIS getAxis() {
+        return axis;
+    }
+
+    public void setAxis(AXIS axis) {
+        this.axis = axis;
+    }
+
+    public double getInputMin() {
+        return inputMin;
+    }
+
+    public void setInputMin(double inputMin) {
+        this.inputMin = inputMin;
+    }
+
+    public double getInputMax() {
+        return inputMax;
+    }
+
+    public void setInputMax(double inputMax) {
+        this.inputMax = inputMax;
+    }
+
+    public double getScaledMin() {
+        return scaledMin;
+    }
+
+    public void setScaledMin(double scaledMin) {
+        this.scaledMin = scaledMin;
+    }
+
+    public double getScaledMax() {
+        return scaledMax;
+    }
+
+    public void setScaledMax(double scaledMax) {
+        this.scaledMax = scaledMax;
+    }
+}