Create Dimensions

To show a dimension for an element, we need to draw extension lines (to show from where to where we are trying to show the distance), a dimension line, parallel to the distance we try to show; the arrows, at the end of the dimension line, and the text, usually, parallel to the dimension line... at this time, we have to do it manually (as shown in the attached image, as an example of what i'm saying) puting all the elements (extension lines, dimension lines with arrows and the text). it would be very helpfull to have this feature.

As an idea, you can click two points in the captured image and create a dimension that you can drag, linked by the Extension Lines. As the image can be in perspective view, would be nice too if you can stretch the dimension line so you can create the illusion of parallel dimension in perspective... and the text associated should be parallel to the dimension line. if is near to the horizontal, should be above the DL and if is vertical, at the left of the DL and to be read from down to up (or reading like if you rotate your head to the left

thanks in advance