About SDF Mesh Library

Allows you to define a 2D / 3D field of signed distances to a virtual surface, perform operations with primitive shapes, and then generate a 3D mesh of the surface in real-time.

Create a world

using Sandbox.Sdf;



// ...



var sdfWorld = new Sdf2DWorld

{

    // Rotate so that Y is up

    LocalRotation = Rotation.FromRoll( 90f )

};

In this example we've rotated it by 90 degrees, so that the Y axis when doing 2D operations becomes the Z (up) axis in world space.

Draw some shapes

Still in server-side code, you can modify the SDF world like this:

// Shape that we want to add

var circle = new CircleSdf( new Vector2( localPos.x, localPos.y ), radius );



// Load the material to use

var material = ResourceLibrary.Get<Sdf2DLayer>( "layers/sdf2d/checkerboard.sdflayer" );



// Draw the circle!

sdfWorld.Add( circle, material );



// Move the circle to the right, then subtract it!

sdfWorld.Subtract( circle.Translate( new Vector2( 32f, 0f ) ), baseMat );