microsoft-visiomicrosoft-visio-2013
With a Visio document, it's (still) easy to zoom and pan within the page. But how do you rotate the view? That is, look at it from a different side — not change the drawing itself, just like zooming doesn't change the shapes but just the way you look at them in the window.
BTW, selecting all and rotating the shapes as a group does not work because of shapes that are specific to horiz or vertical placement; in particular the dimension line labeling.
I've explored with both Visio 2010 and Visio 2013 to compare the behavior.
Visio 2010 does indeed let you rotate the page by holding down the Control key.
With Visio 2013, this feature has been removed. The Control key no longer offers the rotation icon.
Furthermore, if you perform the rotation with Visio 2010 and then save the file you'll notice that when Visio 2010 loads that file the page will appear rotated. However, when that same file is loaded by Visio 2013 then the rotation is gone.
There is no easy way of doing this (Or I just don't know a better way). Right Click on the Shape and select Show ShapeSheet. Now in the shape sheet go to the Connection Points Table and add manually your connection points and there coordinates.
Here is a simple example I made. This is a Rectangle from the Basic Shapes and I want to add a connection point positioned exactly in the middle of the two connection points which are already available by default. So I make a right click on the table and select Insert Row and then add the Width Value of X as 0.25 because it is the half of 0.5. And I add one more connection point with value 0.125 because it is the half of 0.25. Now I have two new connection points added exactly as you wanted.
For other shapes like for example the Ellipse you will need the help of Geometry or Mathematics to find the (X,Y) coordinates. It depends on the Geometry of the shape how the Mathematical equation will look like and how hard it will be. But you can ask these mathematical question here.
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Source: http://www.officefrustration.com/showthread.php?p=3734516