1 files changed, 42 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/latex/media9/files/malte.js b/Master/texmf-dist/doc/latex/media9/files/malte.js
new file mode 100644
index 00000000000..4d019e43a62
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/media9/files/malte.js
@@ -0,0 +1,42 @@
+crank=this.scene.nodes.getByName("manivelle-1-1");
+cross=this.scene.nodes.getByName("croix-1-1");
+
+function cntrClockWise(){dir=1; speed=lastspeed;}
+function pause(){if(speed)lastspeed=speed; speed=0;}
+function clockWise(){dir=-1; speed=lastspeed;}
+function scaleSpeed(s){lastspeed*=s; if(speed) speed=lastspeed;}
+function origSpeed(){lastspeed=1; if(speed) speed=lastspeed;}
+
+Ocrank=new Vector3(-0.025, 0, 0);
+Ocross=new Vector3(0.025, 0, 0);
+
+axeZ=new Vector3(0,0,1);
+mx4x4=new Matrix4x4();
+
+var omega0=Math.PI; // init. angular frequency (half turn per second)
+var dir=1;          // init. direction
+var speed=0;        // speed multiplier
+var lastspeed=1;
+var alpha=0;
+
+timeEvHnd=new TimeEventHandler();
+timeEvHnd.onEvent=function(event) {
+  var dalpha=dir*speed*omega0*event.deltaTime;
+  if (dalpha!=0){
+    mx4x4.setIdentity();
+    mx4x4.rotateAboutLineInPlace(alpha,Ocrank,axeZ);
+    crank.transform.set(mx4x4);
+    with (Math){
+      if (alpha<3*PI/2) beta=0;
+      else beta=-atan(sin(alpha+PI/4)/(sqrt(2)-cos(alpha+PI/4)))+PI/4;
+    }
+    mx4x4.setIdentity();
+    mx4x4.rotateAboutLineInPlace(beta,Ocross,axeZ);
+    cross.transform.set(mx4x4);
+    alpha+=dalpha+2*Math.PI;
+    alpha%=2*Math.PI;
+    scene.update();
+  }
+}
+
+runtime.addEventHandler(timeEvHnd);