perform scaling with the transformation matrix

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
Link: https://github.com/sebhtml/Ray-Cloud-Browser/issues/47
Reviewed-by: Jean-François Erdelyi <jean-francois.erdelyi.1@ulaval.ca>
use the transformation matrix to translate the scene

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
Link: https://github.com/sebhtml/Ray-Cloud-Browser/issues/47
Reviewed-by: Jean-François Erdelyi <jean-francois.erdelyi.1@ulaval.ca>