internal static void _AddCameraTo(CameraTransform3D?_Camera, GLTFWriteSettings?settings, SharpGLTF.Scenes.SceneBuilder scene)
{
if (!_Camera.HasValue)
{
return;
}
var vcam = _Camera.Value;
var camNode = new SharpGLTF.Scenes.NodeBuilder("CameraNode");
camNode.WorldMatrix = vcam.WorldMatrix;
var cam = vcam;
cam.WorldMatrix = Matrix4x4.Identity;
vcam = cam;
if (vcam.TryGetPerspectiveFieldOfView(out var vfov))
{
var persp = new SharpGLTF.Scenes.CameraBuilder.Perspective(null, vfov, 0.1f);
scene.AddCamera(persp, camNode);
}
else if (vcam.TryGetOrthographicScale(out var oscale))
{
var ortho = new SharpGLTF.Scenes.CameraBuilder.Orthographic(oscale, oscale, 0.1f, 1000);
scene.AddCamera(ortho, camNode);
}
if ((settings?.CameraSize ?? 0) > 0)
{
var camMesh = new GltfMeshScene3D();
vcam.DrawCameraTo(camMesh, settings.Value.CameraSize.Value);
vcam.DrawFustrumTo(camMesh, settings.Value.CameraSize.Value * 0.05f, System.Drawing.Color.Yellow);
scene.AddRigidMesh(camMesh.Mesh, camNode);
}
if (Matrix4x4.Invert(_Camera.Value.AxisMatrix, out var invMatrix))
{
// scene.ApplyBasisTransform(invMatrix);
}
}
