private final void dragBuffersInitialize(
final @Nonnull PointReadable<ScreenRelative> mouse_position) {
this.position_initial.setXI(this.componentGetPositionParentRelative().getXI());
this.position_initial.setYI(this.componentGetPositionParentRelative().getYI());
this.drag_start.setXI(mouse_position.getXI());
this.drag_start.setYI(mouse_position.getYI());
}
private final void dragBuffersUpdate(
final @Nonnull PointReadable<ScreenRelative> mouse_position) {
this.drag_delta_previous.setXI(mouse_position.getXI() - this.mouse_previous.getXI());
this.drag_delta_previous.setYI(mouse_position.getYI() - this.mouse_previous.getYI());
this.mouse_previous.setXI(mouse_position.getXI());
this.mouse_previous.setYI(mouse_position.getYI());
this.drag_delta_initial.setXI(mouse_position.getXI() - this.drag_start.getXI());
this.drag_delta_initial.setYI(mouse_position.getYI() - this.drag_start.getYI());
}