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Diffstat (limited to 'src/libnoiseforjava/util/NoiseMap.java')
-rw-r--r-- | src/libnoiseforjava/util/NoiseMap.java | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/libnoiseforjava/util/NoiseMap.java b/src/libnoiseforjava/util/NoiseMap.java new file mode 100644 index 0000000..b0636f2 --- /dev/null +++ b/src/libnoiseforjava/util/NoiseMap.java @@ -0,0 +1,158 @@ +/*
+ * 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;
+
+import libnoiseforjava.exception.ExceptionInvalidParam;
+
+public class NoiseMap
+{
+ /// Implements a noise map, a 2-dimensional array of floating-point
+ /// values.
+ ///
+ /// A noise map is designed to store coherent-noise values generated by a
+ /// noise module, although it can store values from any source. A noise
+ /// map is often used as a terrain height map or a grayscale texture.
+ ///
+ /// The size (width and height) of the noise map can be specified during
+ /// object construction.
+ ///
+ /// The getValue() method can be used to access individual
+ /// values stored in the noise map.
+ ///
+
+
+ /// The height of the noise map.
+ int height;
+
+ /// The width of the noise map.
+ int width;
+
+ /// The array of doubles holding the noise map values
+ double[][] noiseMap;
+
+ double borderValue;
+
+ public NoiseMap (int width, int height) throws ExceptionInvalidParam
+ {
+ setSize (width, height);
+ noiseMap = new double [width][height];
+ borderValue = 0.0;
+ }
+
+ /// Returns a value from the specified position in the noise map.
+ ///
+ /// @param x The x coordinate of the position.
+ /// @param y The y coordinate of the position.
+ ///
+ /// @returns The value at that position.
+ ///
+ /// This method returns the border value if the coordinates exist
+ /// outside of the noise map.
+ public double getValue (int x, int y)
+ {
+ if (x >= 0 && x < width && y >= 0 && y < height)
+ return noiseMap[x] [y];
+ // The coordinates specified are outside the noise map. Return the border
+ // value.
+ else
+ return borderValue;
+ }
+
+ public void setSize (int width, int height) throws ExceptionInvalidParam
+ {
+ if (width < 1 || height < 1)
+ // Invalid width or height.
+ throw new ExceptionInvalidParam ("Invalid parameter in NoiseMap");
+ else
+ {
+ this.width = width;
+ this.height = height;
+ }
+ }
+
+ /// Sets a value at a specified position in the noise map.
+ ///
+ /// @param x The x coordinate of the position.
+ /// @param y The y coordinate of the position.
+ /// @param value The value to set at the given position.
+ ///
+ /// This method does nothing if the noise map object is empty or the
+ /// position is outside the bounds of the noise map.
+ public void setValue (int x, int y, double value)
+ {
+ if (x >= 0 && x < width && y >= 0 && y < height)
+ this.noiseMap[x][y]= value;
+ }
+
+ /// Returns the value used for all positions outside of the noise map.
+ ///
+ /// @returns The value used for all positions outside of the noise
+ /// map.
+ ///
+ /// All positions outside of the noise map are assumed to have a
+ /// common value known as the <i>border value</i>.
+ public double getBorderValue ()
+ {
+ return borderValue;
+ }
+
+ /// Returns the height of the noise map.
+ ///
+ /// @returns The height of the noise map.
+ public int getHeight ()
+ {
+ return height;
+ }
+
+ /// Returns the width of the noise map.
+ ///
+ /// @returns The width of the noise map.
+ public int getWidth ()
+ {
+ return width;
+ }
+
+ /// Sets the value to use for all positions outside of the noise map.
+ ///
+ /// @param borderValue The value to use for all positions outside of
+ /// the noise map.
+ ///
+ /// All positions outside of the noise map are assumed to have a
+ /// common value known as the <i>border value</i>.
+ public void setBorderValue (double borderValue)
+ {
+ this.borderValue = borderValue;
+ }
+
+ public double[][] getNoiseMap() {
+ return noiseMap;
+ }
+
+ public void setNoiseMap(double[][] noiseMap) {
+ this.noiseMap = noiseMap;
+ }
+
+}
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