Commit: 9a2dcc7050969c1b4902c11c0e632519fd4d86f0 - MikuMikuStudio (git)

Main repository of MikuMikuStudio

Commit MetaInfo

• Revision: 9a2dcc7050969c1b4902c11c0e632519fd4d86f0 (tree)
• Time: 2004-01-07 00:19:39
• Author: mojomonkey <mojomonkey@75d0...>
• Commiter: mojomonkey

Log Message

complete bezier curve system

git-svn-id: http://jmonkeyengine.googlecode.com/svn/trunk@204 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

Change Summary

• add: src/com/jme/curve/BezierCurve.java
• add: src/com/jme/curve/Curve.java

Incremental Difference

--- /dev/null
+++ b/src/com/jme/curve/BezierCurve.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2003, jMonkeyEngine - Mojo Monkey Coding
+ * All rights reserved.
+ *
+ * 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 the Mojo Monkey Coding, jME, jMonkey Engine, 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.
+ *
+ */
+package com.jme.curve;
+
+import com.jme.math.Vector3f;
+
+/**
+ * <code>BezierCurve</code>
+ * @author Mark Powell
+ * @version 
+ */
+public class BezierCurve extends Curve {
+    
+    public BezierCurve() {
+        super();
+    }
+    
+    public BezierCurve(Vector3f[] controlPoints) {
+        super(controlPoints);
+    }
+
+    /* (non-Javadoc)
+     * @see com.jme.curve.Curve#getPoint(float)
+     */
+    public Vector3f getPoint(float time) {
+        Vector3f point = new Vector3f();
+        
+        float muk = 1;
+        float munk = (float)Math.pow(1-time, controlPoints.length-1);
+        
+        for(int i = 0; i < controlPoints.length; i++) {
+            int count = controlPoints.length-1;
+            int iCount = i;
+            int diff = count - iCount;
+            float blend = muk * munk;
+            muk *= time;
+            munk /= (1 - time);
+            while(count >= 1) {
+                blend *= count;
+                count--;
+                if(iCount > 1) {
+                    blend /= iCount;
+                    iCount--;
+                }
+                
+                if(diff > 1) {
+                    blend /= diff;
+                    diff--;
+                }
+            }
+            point.x += controlPoints[i].x * blend;
+            point.y += controlPoints[i].y * blend;
+            point.z += controlPoints[i].z * blend;
+        }
+        
+        return point;
+    }
+
+}

--- /dev/null
+++ b/src/com/jme/curve/Curve.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2003, jMonkeyEngine - Mojo Monkey Coding
+ * All rights reserved.
+ *
+ * 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 the Mojo Monkey Coding, jME, jMonkey Engine, 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.
+ *
+ */
+package com.jme.curve;
+
+import com.jme.math.Vector3f;
+import com.jme.system.JmeException;
+
+/**
+ * <code>Curve</code>
+ * @author Mark Powell
+ * @version $Id: Curve.java,v 1.3 2004-01-06 15:19:39 mojomonkey Exp $
+ */
+public abstract class Curve {
+
+    protected Vector3f[] controlPoints;
+
+    public Curve() {
+        controlPoints = new Vector3f[0];
+    }
+
+    public Curve(Vector3f[] controlPoints) {
+        if (null == controlPoints) {
+            throw new JmeException("Control Points may not be null.");
+        }
+
+        if (controlPoints.length < 2) {
+            throw new JmeException("There must be at least two control points.");
+        }
+
+        this.controlPoints = controlPoints;
+    }
+
+    public void setControlPoints(Vector3f[] controlPoints) {
+        if (null == controlPoints) {
+            throw new JmeException("Control Points may not be null.");
+        }
+
+        if (controlPoints.length < 2) {
+            throw new JmeException("There must be at least two control points.");
+        }
+
+        this.controlPoints = controlPoints;
+    }
+    
+    public Vector3f[] getControlPoints() {
+        return controlPoints;
+    }
+
+    public abstract Vector3f getPoint(float time);
+}