private Matrix GetWorldMatrix(IEditorGameCameraService cameraService)
{
Matrix worldMatrix = Matrix.Identity;
switch (Space)
{
case TransformationSpace.WorldSpace:
worldMatrix.TranslationVector = AnchorEntity.Transform.WorldMatrix.TranslationVector;
break;
case TransformationSpace.ObjectSpace:
var parentMatrix = Matrix.Identity;
if (AnchorEntity.GetParent() != null)
{
parentMatrix = AnchorEntity.TransformValue.Parent.WorldMatrix;
}
// We don't use the entity's "WorldMatrix" because it's scale could be zero, which would break the gizmo.
worldMatrix = Matrix.RotationQuaternion(AnchorEntity.Transform.Rotation) *
Matrix.Translation(AnchorEntity.Transform.Position) *
parentMatrix;
break;
case TransformationSpace.ViewSpace:
worldMatrix = Matrix.Invert(cameraService.ViewMatrix);
worldMatrix.TranslationVector = AnchorEntity.Transform.WorldMatrix.TranslationVector;
break;
default:
throw new ArgumentOutOfRangeException();
}
return(worldMatrix);
}
private float GetTargetedScale(IEditorGameCameraService cameraService)
{
if (cameraService.Component.Projection == CameraProjectionMode.Perspective)
{
var distanceToSelectedEntity = Math.Abs(Vector3.TransformCoordinate(AnchorEntity.Transform.WorldMatrix.TranslationVector, cameraService.ViewMatrix).Z);
return(SizeFactor * DefaultScale * 2f * (float)Math.Tan(MathUtil.DegreesToRadians(cameraService.VerticalFieldOfView / 2)) * distanceToSelectedEntity);
}
return(SizeFactor * DefaultScale * cameraService.Component.OrthographicSize);
}
public override void Initialize(IServiceRegistry services, Scene editorScene)
{
base.Initialize(services, editorScene);
if (GizmoRootEntity != null)
{
CollectComponentIds(GizmoRootEntity);
}
gizmos = Game.EditorServices.Get <IEditorGameComponentGizmoService>();
camera = Game.EditorServices.Get <IEditorGameCameraService>();
}
