{: Octree raycast/mesh sample. Demonstrating how to find the intersection point between eye-screen ray and a high poly mesh with an Octree property. To see the performance difference: -move mouse around on the scene with octree disabled (default) -check the "octree enabled" box. Note the frame-rate difference. . } program OctreeD; uses Forms, fOctreeD in 'fOctreeD.pas' {FormOctreedemo}; {$R *.res} begin Application.Initialize; Application.CreateForm(TFormOctreedemo, FormOctreedemo); Application.Run; end.