Question about edges

[Roland Melkert]

I've been using the next piece of code for years to do 'fast' duplicate point detection in my renderers.

Code:

kX=(int)floor(v.x*appDef_decCntMul);
kY=(int)floor(v.y*appDef_decCntMul);
kZ=(int)floor(v.z*appDef_decCntMul);
v.x=(GLfloat)kX/appDef_decCntMul;
v.y=(GLfloat)kY/appDef_decCntMul;
v.z=(GLfloat)kZ/appDef_decCntMul;

v.x etc is still float but it's contents should now be bit wise comparable while using 4 decimal precision on all part level transformed coordinates.

I also stuff this in a hash list to speed up look ups.

This has worked pretty well for years (reducing vertex count by ~60% when only using positional data)