fixed splines

A5/Animation/mainwindow.cpp

@@ -13,7 +13,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(loadMesh, SIGNAL(triggered()), m_centralWidget, SLOT(loadNewMesh()));
     toolBar->addAction(loadMesh);
 
-    switchInterpolation = new QAction("Interpolation",this);
+    switchInterpolation = new QAction("Lin Interpol",this);
     switchInterpolation->setCheckable(true);
     switchInterpolation->setChecked(false);
     connect(switchInterpolation, SIGNAL(triggered(bool)), m_centralWidget, SLOT(setInterpolation(bool)));

A5/Animation/mesh.cpp

@@ -523,10 +523,7 @@ QVector3D Mesh::calcInterpolatedVectorKey(float AnimTime,const aiNodeAnim *nodeA
     QVector3D start = convert(keys[index].mValue);
     QVector3D end = convert(keys[index+1].mValue);
 
-    if(linear)
-        return linInterpolate(start,end,Factor);
-
-    if(start.distanceToPoint(end) == 0){ // same keyframse not interpolation
+    if(start.distanceToPoint(end) < 0.00001){ // same keyframe
         return start;
     }
 
@@ -540,14 +537,29 @@ QVector3D Mesh::calcInterpolatedVectorKey(float AnimTime,const aiNodeAnim *nodeA
         case aiAnimBehaviour_LINEAR: // linear interpolate
             return linInterpolate(start,end,Factor);
         case aiAnimBehaviour_DEFAULT: // take default node transformation
+            //TODO
         default:
-            return linInterpolate(start,end,Factor); //TODO
+            return linInterpolate(start,end,Factor);
         }
     } else if((index+2)== numberOfKeys){
-        //end
+        switch (nodeAnimation->mPostState) {
+        case aiAnimBehaviour_CONSTANT: // nearest Key
+            return Factor <0.5f ? start : end;
+            break;
+        case aiAnimBehaviour_REPEAT: // use start or end
+            //TODO
+        case aiAnimBehaviour_LINEAR: // linear interpolate
+            return linInterpolate(start,end,Factor);
+        case aiAnimBehaviour_DEFAULT: // take default node transformation
+            //TODO
+        default:
             return linInterpolate(start,end,Factor);
+        }
 
     } else{
+        if(linear)
+            return linInterpolate(start,end,Factor);
+
         QVector3D before = convert(keys[index-1].mValue);
         QVector3D after = convert(keys[index+2].mValue);
 
@@ -564,18 +576,19 @@ QVector3D Mesh::calcInterpolatedVectorKey(float AnimTime,const aiNodeAnim *nodeA
 
 }
 
-QVector3D Mesh::Catmul(QVector3D before, QVector3D start, QVector3D end, QVector3D after,float Factor){
-    float t0 = 0;
-    float t1 = timeCatmul(before,start,t0);
-    float t2 = timeCatmul(start,end,t1);
-    float t3 = timeCatmul(end,after,t2);
-    float t = Factor;//(1-Factor)*t1+Factor*t2;
+QVector3D Mesh::Catmul(QVector3D P0, QVector3D P1, QVector3D P2, QVector3D P3,float Factor){
+    double t0 = 0;
+    double t1 = timeCatmul(P0,P1,t0);
+    double t2 = timeCatmul(P1,P2,t1);
+    double t3 = timeCatmul(P2,P3,t2);
+    double t = Factor;
+    t = (1-Factor)*t1+Factor*t2;
     //qDebug()<<before<<start<<end<<after;
     //qDebug()<<t0<<t1<<t2<<t3<<t;
 
-    QVector3D A1 = (t1-t)/(t1-t0)*before    + (t-t0)/(t1-t0)*start;
-    QVector3D A2 = (t2-t)/(t2-t1)*start     + (t-t1)/(t2-t1)*end;
-    QVector3D A3 = (t3-t)/(t3-t2)*end       + (t-t2)/(t3-t2)*after;
+    QVector3D A1 = (t1-t)/(t1-t0)*P0    + (t-t0)/(t1-t0)*P1;
+    QVector3D A2 = (t2-t)/(t2-t1)*P1    + (t-t1)/(t2-t1)*P2;
+    QVector3D A3 = (t3-t)/(t3-t2)*P2    + (t-t2)/(t3-t2)*P3;
 
     QVector3D B1 = (t2-t)/(t2-t0)*A1 + (t-t0)/(t2-t0)*A2;
     QVector3D B2 = (t3-t)/(t3-t1)*A2 + (t-t1)/(t3-t1)*A3;
@@ -585,9 +598,13 @@ QVector3D Mesh::Catmul(QVector3D before, QVector3D start, QVector3D end, QVector
 
 }
 
-float Mesh::timeCatmul(QVector3D p1, QVector3D p2, float t_1){
-    float dist = p1.distanceToPoint(p2);
-    float t =  powf(dist,0.5) +t_1;
+double Mesh::timeCatmul(QVector3D p1, QVector3D p2, double t_1){
+    double dist = p1.distanceToPoint(p2);
+    double alpha = 0.0; //uniform
+    alpha = 0.5; //centripetal
+    //float alpha = 1.0; //chordal
+
+    double t =  qPow(dist,alpha) +t_1;
     // qDebug()<<dist<<t;
     return t;
 }

A5/Animation/mesh.h

@@ -149,7 +149,7 @@ private:
 
     QVector3D linInterpolate(QVector3D start, QVector3D end, float Factor){ return (1.0-Factor)*start + Factor*end;}
     QVector3D Catmul(QVector3D before, QVector3D start, QVector3D end, QVector3D after,float Factor);
-    float timeCatmul(QVector3D p1, QVector3D p2, float t_1);
+    double timeCatmul(QVector3D p1, QVector3D p2, double t_1);
 
 };