1 files changed, 152 insertions, 0 deletions
diff --git a/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs
new file mode 100644
index 0000000..ede4600
--- /dev/null
+++ b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs
@@ -0,0 +1,152 @@
+/*
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of libTerrain nor the names of
+      its contributors may be used to endorse or promote products
+      derived from this software without specific prior written
+      permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+using System;
+using System.Collections.Generic;
+using System.Text;
+namespace libTerrain
+{
+    partial class Channel
+    {
+        private double[] coordinatesToPolar(int x, int y)
+        {
+            double theta = Math.Atan2(x - (w / 2), y - (h / 2));
+            double rx = (double)x - ((double)w / 2);
+            double ry = (double)y - ((double)h / 2);
+            double r = Math.Sqrt((rx * rx) + (ry * ry));
+            double[] coords = new double[2];
+            coords[0] = r;
+            coords[1] = theta;
+            return coords;
+        }
+        public int[] polarToCoordinates(double r, double theta) {
+            double nx;
+            double ny;
+            nx = (double)r * Math.Cos(theta);
+            ny = (double)r * Math.Sin(theta);
+            nx += w / 2;
+            ny += h / 2;
+            if (nx >= w)
+                nx = w - 1;
+            if (ny >= h)
+                ny = h - 1;
+            if (nx < 0)
+                nx = 0;
+            if (ny < 0)
+                ny = 0;
+            int[] coords = new int[2];
+            coords[0] = (int)nx;
+            coords[1] = (int)ny;
+            return coords;
+        }
+        public void Polar()
+        {
+            Channel n = this.copy();
+            int x, y;
+            for (x = 0; x < w; x++)
+            {
+                for (y = 0; y < h; y++)
+                {
+                    double[] coords = coordinatesToPolar(x,y);
+                    coords[0] += w / 2.0;
+                    coords[1] += h / 2.0;
+                    map[x, y] = n.map[(int)coords[0] % n.w, (int)coords[1] % n.h];
+                }
+            }
+        }
+        public void SpiralPlanter(int steps, double incAngle, double incRadius, double offsetRadius, double offsetAngle)
+        {
+            int i;
+            double r = offsetRadius;
+            double theta = offsetAngle;
+            for (i = 0; i < steps; i++)
+            {
+                r += incRadius;
+                theta += incAngle;
+                int[] coords = polarToCoordinates(r,theta);
+                raise(coords[0], coords[1], 20, 1);
+            }
+        }
+        public void SpiralCells(int steps, double incAngle, double incRadius, double offsetRadius, double offsetAngle, double[] c)
+        {
+            List<Point2D> points = new List<Point2D>();
+            int i;
+            double r = offsetRadius;
+            double theta = offsetAngle;
+            for (i = 0; i < steps; i++)
+            {
+                r += incRadius;
+                theta += incAngle;
+                int[] coords = polarToCoordinates(r, theta);
+                points.Add(new Point2D(coords[0],coords[1]));
+            }
+            voronoiDiagram(points, c);
+        }
+        public void Spiral(double wid, double hig, double offset)
+        {
+            int x, y, z;
+            z = 0;
+            for (x = 0; x < w; x++)
+            {
+                for (y = 0; y < h; y++)
+                {
+                    z++;
+                    double dx = Math.Abs((w / 2) - x);
+                    double dy = Math.Abs((h / 2) - y);
+                    map[x, y] += Math.Sin(dx / wid) + Math.Cos(dy / hig);
+                }
+            }
+            normalise();
+        }
+    }
+}
+\ No newline at end of file

diff --git a/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs new file mode 100644 index 0000000..ede4600 --- /dev/null +++ b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Generators/Spiral.cs
@@ -0,0 +1,152 @@
	1	/*
	2	Redistribution and use in source and binary forms, with or without
	3	modification, are permitted provided that the following conditions are
	4	met:
	5
	6	* Redistributions of source code must retain the above copyright
	7	notice, this list of conditions and the following disclaimer.
	8
	9	* Redistributions in binary form must reproduce the above
	10	copyright notice, this list of conditions and the following
	11	disclaimer in the documentation and/or other materials provided
	12	with the distribution.
	13
	14	* Neither the name of libTerrain nor the names of
	15	its contributors may be used to endorse or promote products
	16	derived from this software without specific prior written
	17	permission.
	18
	19	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	20	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	21	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	22	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	23	OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	24	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	25	LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	26	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	27	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	28	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	29	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	30	*/
	31
	32	using System;
	33	using System.Collections.Generic;
	34	using System.Text;
	35
	36	namespace libTerrain
	37	{
	38	partial class Channel
	39	{
	40	private double[] coordinatesToPolar(int x, int y)
	41	{
	42
	43	double theta = Math.Atan2(x - (w / 2), y - (h / 2));
	44	double rx = (double)x - ((double)w / 2);
	45	double ry = (double)y - ((double)h / 2);
	46	double r = Math.Sqrt((rx * rx) + (ry * ry));
	47
	48	double[] coords = new double[2];
	49	coords[0] = r;
	50	coords[1] = theta;
	51	return coords;
	52	}
	53
	54	public int[] polarToCoordinates(double r, double theta) {
	55	double nx;
	56	double ny;
	57
	58	nx = (double)r * Math.Cos(theta);
	59	ny = (double)r * Math.Sin(theta);
	60
	61	nx += w / 2;
	62	ny += h / 2;
	63
	64	if (nx >= w)
	65	nx = w - 1;
	66
	67	if (ny >= h)
	68	ny = h - 1;
	69
	70	if (nx < 0)
	71	nx = 0;
	72
	73	if (ny < 0)
	74	ny = 0;
	75
	76	int[] coords = new int[2];
	77	coords[0] = (int)nx;
	78	coords[1] = (int)ny;
	79	return coords;
	80	}
	81
	82	public void Polar()
	83	{
	84	Channel n = this.copy();
	85
	86	int x, y;
	87	for (x = 0; x < w; x++)
	88	{
	89	for (y = 0; y < h; y++)
	90	{
	91	double[] coords = coordinatesToPolar(x,y);
	92
	93	coords[0] += w / 2.0;
	94	coords[1] += h / 2.0;
	95
	96	map[x, y] = n.map[(int)coords[0] % n.w, (int)coords[1] % n.h];
	97	}
	98	}
	99	}
	100
	101	public void SpiralPlanter(int steps, double incAngle, double incRadius, double offsetRadius, double offsetAngle)
	102	{
	103	int i;
	104	double r = offsetRadius;
	105	double theta = offsetAngle;
	106	for (i = 0; i < steps; i++)
	107	{
	108	r += incRadius;
	109	theta += incAngle;
	110
	111	int[] coords = polarToCoordinates(r,theta);
	112	raise(coords[0], coords[1], 20, 1);
	113	}
	114	}
	115
	116	public void SpiralCells(int steps, double incAngle, double incRadius, double offsetRadius, double offsetAngle, double[] c)
	117	{
	118	List<Point2D> points = new List<Point2D>();
	119
	120	int i;
	121	double r = offsetRadius;
	122	double theta = offsetAngle;
	123	for (i = 0; i < steps; i++)
	124	{
	125	r += incRadius;
	126	theta += incAngle;
	127
	128	int[] coords = polarToCoordinates(r, theta);
	129	points.Add(new Point2D(coords[0],coords[1]));
	130	}
	131
	132	voronoiDiagram(points, c);
	133	}
	134
	135	public void Spiral(double wid, double hig, double offset)
	136	{
	137	int x, y, z;
	138	z = 0;
	139	for (x = 0; x < w; x++)
	140	{
	141	for (y = 0; y < h; y++)
	142	{
	143	z++;
	144	double dx = Math.Abs((w / 2) - x);
	145	double dy = Math.Abs((h / 2) - y);
	146	map[x, y] += Math.Sin(dx / wid) + Math.Cos(dy / hig);
	147	}
	148	}
	149	normalise();
	150	}
	151	}
	152	} \ No newline at end of file