Fillet/Chamfer cannot cannot meet opposite edges

[pieterhijma]

Description

Fillets and chamfers can in general not extend such that they meet opposing edges. For example, on a box of 10x10x10, it is not possible to create a fillet or chamfer of 10 given an edge, whereas 9.999 is possible (which leaves a very small face inbetween the fillet/chamfer and opposing edge.

Likewise it is not possible to "round" geometry by creating two fillets/chamfers on opposing edges such that the fillet/chamfer edge meet. For example on a box of 10x10x10, it is possible to create a fillet of 5 but as soon as you create another fillet of 5 such that it meets the first fillet, the fillet/chamfer fails. Again, it is possible to make a fillet of 4.99 which leaves a very small face. See the DRAW script below.

Expected Behavior

A fillet or chamfer can extend to their opposing edges or can meet, even though a face needs to be removed.

Actual Behavior

Fillets or chamfers fail if they extend to their opposing edges or meet.

Sample Code or DRAW Tcl Script

One side:

pload ALL

box box 10 10 10
explode box e
# chamf result box box_10 10
blend result box 10 box_10
checkshape result

Two sides:

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box box 10 10 10
explode box e
blend result box 5 box_10 5 box_9
# chamf result box box_10 5 box_9 5
checkshape result

The equivalent chamfer is commented.

Operating System

Linux

Compiler

GCC

Bitness

64-bit

OCCT Version

latest

Additional Files

No response