The pattern making technique that uses the body to create a basic pattern block is known as draping. Draping involves arranging fabric directly on a dress form or mannequin to create the structure of a garment. This method allows designers to visualize how the fabric will fall and move, enabling them to refine the fit and style of the garment in a three-dimensional space.
In addition to draping, another technique related to the creation of basic pattern blocks is body measurement, where precise measurements of the body are taken to draft custom patterns. However, draping is more tactile and visual, as it directly involves manipulating the fabric on a form.