// if we go to 1.0 then it will go to a full box
shaderAnim.animateTo( revealEffect, "uRadius", 0.5,animOptions);
shaderAnim.play();
-
+```
* * *
### Example of paper twisting in the wind with color (Vertex + Fragment Shader)
<img src="../assets/img/shader-grid-hint.png">
-
+```
createTwistEffect = function()
{