fixed warning

fixed testing of whether screenToModelCoordinates's result value is behind the camera

use glm::project instead of figuring out the conversion manually...

use glm::unProject to implement screenToModelCoordinates

PartRenderer::modelToScreenCoordinates FINALLY WORKS

grid stuff

made the grid look nicer

(0) -30 -10 -7 +7 +10 +30 +100 +300 tip

mercurial