(
format "GET MESH TEST\n"
delete objects
obj = geosphere segs:100
-- obj = converttomesh (geosphere segs:100)
-- obj = converttopoly (geosphere segs:100)
nodes = for j = 1 to 100 collect obj
gc(); st = timestamp(); sh = heapfree
for j in nodes do tmesh = snapshotasmesh j
format "snapshotAsMesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
gc(); st = timestamp(); sh = heapfree
for j in nodes do tmesh = copy j.mesh
format ".Mesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
if gettrimesh != undefined then
(
gc(); st = timestamp(); sh = heapfree
for j in nodes do tmesh = copy (gettrimesh j)
format "getTrimesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
)
else print "getTrimesh() method not available"
---------------------------------------------------------------------------
format "\nGET MESH FACES MATERIALS IDs TEST\n"
nodes = for j = 1 to 50 collect obj
gc(); st = timestamp(); sh = heapfree
for j in nodes do
(
tmesh = snapshotasmesh j
for k = 1 to tmesh.numfaces do id = getfacematid tmesh k
)
format "snapshotAsMesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
gc(); st = timestamp(); sh = heapfree
for j in nodes do
(
tmesh = copy j.mesh
for k = 1 to tmesh.numfaces do id = getfacematid tmesh k
)
format ".Mesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
if gettrimesh != undefined then
(
gc(); st = timestamp(); sh = heapfree
for j in nodes do
(
tmesh = copy (gettrimesh j)
for k = 1 to tmesh.numfaces do id = getfacematid tmesh k
)
format "getTrimesh:% heap:%\n" (timestamp()-st) (sh-heapfree)
)
else print "getTrimesh() method not available"
)MAX 2016
PRIMITIVE
GET MESH TEST
- snapshotAsMesh:318 heap:15328L
- .Mesh:627 heap:15480L
- getTrimesh:571 heap:30528L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:3056 heap:7664L
- .Mesh:3208 heap:7880L
- getTrimesh:3184 heap:15328L
EDITABLE_MESH
GET MESH TEST
- snapshotAsMesh:332 heap:15328L
- .Mesh:287 heap:15480L
- getTrimesh:287 heap:30528L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:3060 heap:7664L
- .Mesh:3036 heap:7880L
- getTrimesh:3051 heap:15328L
EDITABLE_POLY
GET MESH TEST
- snapshotAsMesh:2047 heap:15328L
- .Mesh:2029 heap:15480L
- getTrimesh:1962 heap:30528L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:3928 heap:7664L
- .Mesh:3910 heap:7880L
- getTrimesh:3881 heap:15328L
MAX 2021
PRIMITIVE
GET MESH TEST
- snapshotAsMesh:337 heap:17728L
- .Mesh:598 heap:17912L
- getTrimesh:553 heap:35336L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:1793 heap:8868L
- .Mesh:1926 heap:9112L
- getTrimesh:1882 heap:17736L
EDITABLE_MESH
GET MESH TEST
- snapshotAsMesh:343 heap:17736L
- .Mesh:270 heap:17912L
- getTrimesh:271 heap:35336L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:1777 heap:8936L
- .Mesh:1759 heap:9112L
- getTrimesh:1744 heap:17736L
EDITABLE_POLY
GET MESH TEST
- snapshotAsMesh:1897 heap:17736L
- .Mesh:1837 heap:17912L
- getTrimesh:1781 heap:35336L
GET MESH FACES MATERIALS IDs TEST
- snapshotAsMesh:2567 heap:8936L
- .Mesh:2529 heap:9112L
- getTrimesh:2507 heap:17736L
Oh!!! I figured out what was going wrong … We call the mesh value for each face operation (in our case getfacematid). This is a built-in max function and like any other mesh methods, setup_mesh is used for each call. This is almost the same as making a copy every time you call a single subobject.
My mesh methods (from my extension) don’t do this, when only READ access is needed. So for built-in MXS, using snapshotmesh node is generally better than copy node.mesh. But you should know and understand that the snapshot by default takes renderMesh, which in some cases may not yet be generated at the moment. This can cause some problems.