Don’t worry. Beside Stretch, Flip action dynamic block, AutoCAD remain to give visibility feature. In this tutorial, you will be helped to use this function.
Step 1: Draw doors as below
Step 2: Define block
Step 3: Add visibility feature
(1) You need to open your block editor interface, CAD show interface as below.
(2) Opening parameters palettes > activate visibility parameter > place parameter location as figure below.
(3) Click on visibility states icon on toolbar or click on double left of mouse parameter before > show visibility states and then you need to create new visibility states such as left, right, inward and outward. You can see figure as below > press OK button.
(4) Next step, make objects invisibility for the current visibility state.
Select visibility state > select object invisibility > click on invisibility icon on toolbar > click on save block icon on toolbar.
(5) Close Block editor