Patterning by Heat: The Responsive Textile Structures presents 4 different computational textile structures that change the appearance of space through 2 different transformations that happen in the surface expression. The first typology of material is pixilated, designed with yarn that melts at high temperature; accordingly, the fabric opens or breaks when it receives current. The opening allows designers flexibility to experiment with see through effects on the fabric, or to ‘write’ upon the fabric making apertures, collecting foreground and background together in one shape. The second material has been designed with yarn that shrinks or draws solid lines in the fabric when it receives current. The shrinking reveals a more opaque patterning in the textile closing parts of that textile off, transforming the nature of that space. Both breaking and shrinking yarns have been knitted into four different architectural tension structures that are designed using computation and textiles to track people’s presence in space by the changes that appear in the surface design.