LoopMode.Cycle is now properly supported by MotionEvent and CinematicEvent.

Used AnimChannel's clampWrapTime method for consistency, and refactored it in an AnimationUtils utility class.

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@11065 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/animation/AnimChannel.java

@@ -68,64 +68,6 @@ public final class AnimChannel {
     private float blendAmount = 1f;
     private float blendRate   = 0;
     
-    private static float clampWrapTime(float t, float max, LoopMode loopMode){
-        if (t == 0) {
-            return 0; // prevent division by 0 errors
-        }
-        
-        switch (loopMode) {
-            case Cycle:
-                boolean sign = ((int) (t / max) % 2) != 0;
-                float result;
-                
-//                if (t < 0){
-//                    result = sign ? t % max : -(max + (t % max));
-//                } else {
-                    // NOTE: This algorithm seems stable for both high and low
-                    // tpf so for now its a keeper.
-                    result = sign ? -(max - (t % max)) : t % max;
-//                }
-                    
-//                if (result <= 0 || result >= max) {
-//                    System.out.println("SIGN: " + sign + ", RESULT: " + result + ", T: " + t + ", M: " + max);
-//                }
-                
-                return result;
-            case DontLoop:
-                return t > max ? max : (t < 0 ? 0 : t);
-            case Loop:
-                return t % max;
-        }
-        return t;
-        
-        
-//        if (max == Float.POSITIVE_INFINITY)
-//            return t;
-//        
-//        if (t < 0f){
-//            //float tMod = -(-t % max);
-//            switch (loopMode){
-//                case DontLoop:
-//                    return 0;
-//                case Cycle:
-//                    return t;
-//                case Loop:
-//                    return max - t;
-//            }
-//        }else if (t > max){
-//            switch (loopMode){
-//                case DontLoop:
-//                    return max;
-//                case Cycle:
-//                    return -(2f * max - t) % max;
-//                case Loop:
-//                    return t % max;
-//            }
-//        }
-//
-//        return t;
-    }
-
     AnimChannel(AnimControl control){
         this.control = control;
     }
@@ -385,7 +327,7 @@ public final class AnimChannel {
             blendFrom.setTime(timeBlendFrom, 1f - blendAmount, control, this, vars);
             
             timeBlendFrom += tpf * speedBlendFrom;
-            timeBlendFrom = clampWrapTime(timeBlendFrom,
+            timeBlendFrom = AnimationUtils.clampWrapTime(timeBlendFrom,
                                           blendFrom.getLength(),
                                           loopModeBlendFrom);
             if (timeBlendFrom < 0){
@@ -414,7 +356,7 @@ public final class AnimChannel {
             } 
         }
         time += tpf * speed;      
-        time = clampWrapTime(time, animation.getLength(), loopMode);
+        time = AnimationUtils.clampWrapTime(time, animation.getLength(), loopMode);
         if (time < 0){
             // Negative time indicates that speed should be inverted
             // (for cycle loop mode only)

engine/src/core/com/jme3/animation/AnimationUtils.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2009-2012 jMonkeyEngine
+ * 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 'jMonkeyEngine' 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.jme3.animation;
+
+import static com.jme3.animation.LoopMode.Cycle;
+import static com.jme3.animation.LoopMode.DontLoop;
+import static com.jme3.animation.LoopMode.Loop;
+
+/**
+ *
+ * @author Nehon
+ */
+public class AnimationUtils {
+    
+    
+    /**
+     * Clamps the time according to duration and loopMode
+     * @param time
+     * @param duration
+     * @param loopMode
+     * @return 
+     */
+     public static float clampWrapTime(float time, float duration, LoopMode loopMode){
+        if (time == 0) {
+            return 0; // prevent division by 0 errors
+        }        
+        switch (loopMode) {
+            case Cycle:
+                boolean sign = ((int) (time / duration) % 2) != 0;
+                return sign ? -(duration - (time % duration)) : time % duration;
+            case DontLoop:
+                return time > duration ? duration : (time < 0 ? 0 : time);
+            case Loop:
+                return time % duration;
+        }
+        return time;
+     }
+}

engine/src/core/com/jme3/cinematic/events/AbstractCinematicEvent.java

@@ -31,6 +31,7 @@
  */
 package com.jme3.cinematic.events;
 
+import com.jme3.animation.AnimationUtils;
 import com.jme3.animation.LoopMode;
 import com.jme3.app.Application;
 import com.jme3.cinematic.Cinematic;
@@ -138,6 +139,12 @@ public abstract class AbstractCinematicEvent implements CinematicEvent {
                 stop();
             } else if(time >= initialDuration && loopMode == LoopMode.Loop){
                 setTime(0);
+            }else{
+                time = AnimationUtils.clampWrapTime(time, initialDuration, loopMode);
+                if(time<0){
+                    speed = - speed;
+                    time = - time;
+                }
             }
         }
 

engine/src/core/com/jme3/cinematic/events/MotionEvent.java

@@ -31,6 +31,7 @@
  */
 package com.jme3.cinematic.events;
 
+import com.jme3.animation.AnimationUtils;
 import com.jme3.animation.LoopMode;
 import com.jme3.app.Application;
 import com.jme3.cinematic.Cinematic;
@@ -67,6 +68,7 @@ public class MotionEvent extends AbstractCinematicEvent implements Control {
     protected Direction directionType = Direction.None;
     protected MotionPath path;
     private boolean isControl = true;
+    private int travelDirection = 1;
     /**
      * the distance traveled by the spatial on the path
      */
@@ -178,6 +180,11 @@ public class MotionEvent extends AbstractCinematicEvent implements Control {
                 }
                 stop();
             } else {
+                time = AnimationUtils.clampWrapTime(time, initialDuration, loopMode);
+                if(time<0){
+                    speed = - speed;
+                    time = - time;
+                }
                 onUpdate(tpf);
             }
         }