In the previous lesson we made this simple dynamic blog and we can modify this blog the length of this
blog essentially by changing it with this clip.
Now when we the end of this blog the center becomes off centric and now it's not centered with respect
to the complete geometry.
So in order to keep this centered We need to modify this block Additionally so I'll select this block.
Then right click and select block editor.
Now here in Blocher reader we need to add one more constrain and that will be the aligned constrained
once again.
So I look this line constrain and now select the circle.
So now when you notice this group at the center of this circle all the market at the center.
And now go to this particular line and make sure that this time marker appears at the center which is
not the case so I'll move it.
And now add selected here.
Now we can see the market at the center.
So let's click and now please and this constrain.
So now you can see that the line in between these two points is five minutes.
Obviously we don't want this lenth for the dromedaries also.
So when we stretch this rectangle the length will also change.
But in this case if you keep it that way the length will not change all the total and change.
So to make this clear I'll just modify this value and I'll change it to the one by two.
So let's type here.
The one by two.
Now in this we we can restrict the length of this and D2 value or the distance between these two points
always equal to half of the 1 which is this total length or the length of rectangle.
Now click outside to accept the values.
And now let's go into the block.
So I'll go to this test block.
Now select this rectangle.
And now let's move it.
Now you can see that the circle is always centered no matter how you change the length.
Now we can apply one more constrain and here you can see that the circle is moving along with the length
of this rectangle.
Now what if we want to circle to remain fixed at that position and we want to stretch this block in
either direction.
So far that we need to modify it additionally.
So let's now move back to block editor and now I'll go to this constraint stap.
Select this fix constrain and now apply it on the center of the circle.
So click on the circle and the constraint is now applied.
Now let's go to this test block again.
Now select it and now move it.
And now you'll notice that the circle will always remain fixed and the length can be changed in either
direction.
In this way.
So in this way you can also make your blocks with the help of constraints.
So I once again close this test block and also close this block editor by saving the changes.
And here we have it the final block as a requirement.