Class CacheShelf

container object

data which will be mount on layer to render.

when you are too lazy to design a model (from Base), ref is the best alternative.

all reactive layer is with ref.

systems which are all in this.

reactive layer in which this layer is.

a signal indicating whether the head state has changed.

render the state syncronize

logs to record the state before calling onXX. It's data onXX returns.

控制图形的旋转角度

the start angle.

If you want to disable matrix transformation.

which means it is an object exsiting in the root system without any sub-system.

IF you want trigger render after this set call, set IfRender TRUE.

!Warn: ifRender will be reset to FALSE after rendered;

图形的顶点坐标

控制图形的位置

控制图形的缩放