I guess you'll find what you need in the monograph by J.V. Field and J.J. Gray, The Geometrical Work of Girard Desargues.
They give substantial critical and exegetical commentaries as well as valuable introductory essays placing Desargues and his various works in historical context. Particularly attractive is the authors' demonstration of how Desargues' highly original ideas developed from the contemporary technical mathematical context, and their elegant exposition of the importance of the 'practical tradition of applied geometry' in stimulating his work.