/// <summary>Converts a <see cref="RealtimeCSG.Legacy.Surface"/>/<see cref="RealtimeCSG.Legacy.TexGen"/>/<see cref="RealtimeCSG.Legacy.TexGenFlags"/> combination into a <see cref="RealtimeCSG.Foundation.SurfaceDescription"/>.</summary>
/// <param name="surface">A legacy <see cref="RealtimeCSG.Legacy.Surface"/> that describes how the texture space is orientated relative to the brush.</param>
/// <param name="texGen">A legacy <see cref="RealtimeCSG.Legacy.TexGen"/> that describes how the texture coordinates are calculated in the <see cref="RealtimeCSG.Foundation.SurfaceDescription"/>.</param>
/// <param name="texGenFlags">A legacy <see cref="RealtimeCSG.Legacy.TexGenFlags"/> enum that describes if the <see cref="RealtimeCSG.Foundation.SurfaceDescription"/> texture generation will be in world-space or brush-space.</param>
/// <returns>A new <see cref="RealtimeCSG.Foundation.SurfaceDescription"/></returns>
public static SurfaceDescription CreateSurfaceDescription(Surface surface, TexGen texGen, TexGenFlags texGenFlags)
{
var localToTextureSpace = SurfaceUtility.GetLocalToTextureSpaceMatrix(texGen, surface);
SurfaceDescription description;
description.smoothingGroup = texGen.SmoothingGroup;
description.surfaceFlags = ((texGenFlags & TexGenFlags.WorldSpaceTexture) == 0) ? SurfaceFlags.None : SurfaceFlags.TextureIsInWorldSpace;
description.UV0.U = localToTextureSpace.GetRow(0);
description.UV0.V = localToTextureSpace.GetRow(1);
return(description);
}
