Waving flag layer

The flag in the above screenshot is rendered with the waving flag layer.

What can I do with the waving flag layer?

With the waving flag layer you can render a waving flag.

How do I add a waving flag layer?

Choose LAYER > Add layer > Add waving flag layer... to add a new waving flag layer.

The new waving flag layer can be selected from the layers dropdown to make it the active layer.


The installer comes with shows demonstrating the possibilities of the waving flag layer. Choose FILE > Open show... and select a show from the BluffTitler/Media/Shows/Wavingflag folder.

To quickly switch between your own shows and the ones that came with the installer, click on the Personal and App buttons in the upper right corner of the file dialog.

Cloth simulation model

The waving flag layer is simulated using a mass spring damper model. In this model the vertices of the cloth model are connected with springs.

The cloth simulation is not deterministic. The flag is not reset when you start playing/exporting and the wind noise is random so the cloth looks different every time.

Pre-export simulation time

It takes a few simulation steps before the flag hangs realistically. To prevent this initialization time to appear in your exported video when using a playlist or server rendering, you can use the Pre-export simulation time option int the FILE > Show properties... dialog.

Waving flag layer style 1

Mirror back

Mirrors the back of the flag.

Do not mirror back

This style can be handy for flags with texts.

Waving flag layer style 2

Cord inside flag

The cord is sewn inside the flag.

Cord outside flag

This style can be handy for transparent flags.

Waving flag layer properties


The position of the flag.


The rotation of the flag.


The size of the flag.


The colour of the flag.

Specular colour

The specular colour of the flag.


The size of the specular highlights.


The transparency of the flag.

Depth bias

This property can be used to solve sorting problems.

Layers have to be sorted according to their distance to the camera. This sometimes goes wrong when using very big, very small or irregular shaped layers. When this happens, use the Depth bias property to fix it.

Wind force

The direction and size of the wind force. For realistic behaviour, prevent using 0. For example to make the flag wave to the right use (2, 0.1, 0.1). And to make it hang down use (0.01, -1, 0.01).

Wind noise

Without some noise, the flag will eventually hang still. Use the noise property to keep it alive.

Max stretch

The elasticity of the flag.

Air resistance

The air damps the movement of the flag. Use a higher value to make it less flappy.

Pole radius

The radius of the pole. This is used for collision detection.

Attached to pole

The 1st slider controls the top, the 2nd the middle and the 3rd the bottom.

Flag position

The vertical position of the flag.

Cord length, radius

The length and radius of the cord.

Cord colour

The colour of the cord.

Bounding box

With this property you can define the maximum size of the flag. This is important for templates that must render flags with different dimensions correctly. Press <F2> to display the bounding box.