This paper presents a solution to integrate multi-touch interaction incommon graphical applications. There has been extensive research on how tobuild multi-point, tangible or touchable hardware but most of these advancesare not replicated in common standard graphics libraries. For this reason, it isharder to create applications that take advantage from the last multi-touchtechnologies and their affordances such as the natural capabilities that arisewhen multiple input points are present. In this paper, a model is defined formulti-point integration and a case study is presented, where the open source graphic library Ogre 3D is extended to support multi-touch. In the modelseveral events are suggested to be used in standard libraries, taking advantageof common spatial properties to implements the multi-point interaction.