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Some of the sample code specifies these channels as PART_* as opposed to *_CHANNEL. More...
Channels |
|
| The pipeline is divided into the following
channels: |
|
| #define | TOPO_CHANNEL (1<<0) |
| The topology channel - the face or polygon
structures. |
|
| #define | GEOM_CHANNEL (1<<1) |
| The vertices of the object. |
|
| #define | TEXMAP_CHANNEL (1<<2) |
| The texture vertices and procedural
mappings. |
|
| #define | MTL_CHANNEL (1<<3) |
| This is no longer used. |
|
| #define | SELECT_CHANNEL (1<<4) |
| The sub-object selection channel. |
|
| #define | SUBSEL_TYPE_CHANNEL (1<<5) |
| The current level of selection. |
|
| #define | DISP_ATTRIB_CHANNEL (1<<6) |
| The miscellaneous bits controlling the
item's display. |
|
| #define | VERTCOLOR_CHANNEL (1<<7) |
| The color per vertex channel. |
|
| #define | GFX_DATA_CHANNEL (1<<8) |
| The used internally by 3ds Max for
stripping. |
|
| #define | DISP_APPROX_CHANNEL (1<<9) |
| Displacement approximation. |
|
| #define | EXTENSION_CHANNEL (1<<13) |
| The channel used by extension channel
objects. |
|
| #define | TM_CHANNEL (1<<10) |
| The
ObjectState TM that flows down the pipeline. |
|
| #define | EDGEVISIBLITY_CHANNEL (1<<11) |
| For internal use. |
|
| #define | DONT_RECREATE_TRISTRIP_CHANNEL (1<<12) |
| For internal use. |
|
| #define | GLOBMTL_CHANNEL (1<<31) |
| This is no longer used. |
|
| #define | OBJ_CHANNELS (TOPO_CHANNEL|GEOM_CHANNEL|SELECT_CHANNEL|TEXMAP_CHANNEL|MTL_CHANNEL|SUBSEL_TYPE_CHANNEL|DISP_ATTRIB_CHANNEL|VERTCOLOR_CHANNEL|GFX_DATA_CHANNEL|DISP_APPROX_CHANNEL|EXTENSION_CHANNEL) |
| #define | ALL_CHANNELS (OBJ_CHANNELS|TM_CHANNEL|GLOBMTL_CHANNEL) |
Object Channel Indices |
|
| The following are the indices that
may be used for the object channels.These values are used in the
methods
Object::UpdateValidity(), Object::SetChannelValidity()
and
Object::ChannelValidity(). |
|
| #define | TOPO_CHAN_NUM 0 |
| The topology channel number. |
|
| #define | GEOM_CHAN_NUM 1 |
| The geometry channel number. |
|
| #define | TEXMAP_CHAN_NUM 2 |
| The texture vertices and procedural mappings
channels number. |
|
| #define | MTL_CHAN_NUM 3 |
| This is no longer used. |
|
| #define | SELECT_CHAN_NUM 4 |
| The sub-object selection channel number.
|
|
| #define | SUBSEL_TYPE_CHAN_NUM 5 |
| This is the current level of selection
number. |
|
| #define | DISP_ATTRIB_CHAN_NUM 6 |
| The display channel number. |
|
| #define | VERT_COLOR_CHAN_NUM 7 |
| The vertex colors number. This is also used
for the second mapping channel. |
|
| #define | GFX_DATA_CHAN_NUM 8 |
| The stripping, edge list, etc. channel
number. |
|
| #define | DISP_APPROX_CHAN_NUM 9 |
| The displacement approximation channel
number. |
|
| #define | EXTENSION_CHAN_NUM 10 |
| The extension object channel number.
|
|
Some of the sample code specifies these channels as PART_* as opposed to *_CHANNEL.
For example, PART_GEOM|PART_TOPO instead of GEOM_CHANNEL|TOPO_CHANNEL. The proper usage is the *_CHANNEL version.
| #define TOPO_CHANNEL (1<<0) |
The topology channel - the face or polygon structures.
Smoothing groups and materials are also part of this channel. Edge visibility is also part of this channels since it is an attribute of the face structure.
| #define GEOM_CHANNEL (1<<1) |
| #define TEXMAP_CHANNEL (1<<2) |
The texture vertices and procedural mappings.
| #define MTL_CHANNEL (1<<3) |
This is no longer used.
Materials are rolled into the Face data structure and are part of the topology channel.
| #define SELECT_CHANNEL (1<<4) |
The sub-object selection channel.
An object's selection flows down the pipeline. What the selection is actually comprised of is up to the specific object type. For example, TriObjects have bits for face, edge and vertex selection. This channel is the actual BitArray used, like selLevel of the class Mesh.
| #define SUBSEL_TYPE_CHANNEL (1<<5) |
The current level of selection.
Every object that flows down the pipeline is at a certain level that corresponds to the Sub-Object drop down in the 3ds Max user interface. This channel indicates which level the object is at. This is also specific to the object type. There are 32 bits to represent the level of selection. When all the bits are 0, the object is at object level selection.
| #define DISP_ATTRIB_CHANNEL (1<<6) |
The miscellaneous bits controlling the item's display.
These bits are specific to the type of object. For the Mesh object these are the surface normal scale, display of surface normals, edge visibility and display flags.
| #define VERTCOLOR_CHANNEL (1<<7) |
The color per vertex channel.
This is also used for the second texture mapping channel.
| #define GFX_DATA_CHANNEL (1<<8) |
The used internally by 3ds Max for stripping.
Plug-In developers don't need to specify this channel as being changed or used in their plug-ins.
| #define DISP_APPROX_CHANNEL (1<<9) |
Displacement approximation.
| #define EXTENSION_CHANNEL (1<<13) |
The channel used by extension channel objects.
| #define TM_CHANNEL (1<<10) |
The ObjectState TM that flows down the pipeline.
This TM may be modified by modifiers.
| #define EDGEVISIBLITY_CHANNEL (1<<11) |
For internal use.
Edge visiblity channel used internally to create an edit mesh edge vis cache
| #define DONT_RECREATE_TRISTRIP_CHANNEL (1<<12) |
For internal use.
A channel used to determine whether we should use tri strips or not
| #define GLOBMTL_CHANNEL (1<<31) |
| #define OBJ_CHANNELS (TOPO_CHANNEL|GEOM_CHANNEL|SELECT_CHANNEL|TEXMAP_CHANNEL|MTL_CHANNEL|SUBSEL_TYPE_CHANNEL|DISP_ATTRIB_CHANNEL|VERTCOLOR_CHANNEL|GFX_DATA_CHANNEL|DISP_APPROX_CHANNEL|EXTENSION_CHANNEL) |
| #define ALL_CHANNELS (OBJ_CHANNELS|TM_CHANNEL|GLOBMTL_CHANNEL) |
| #define TOPO_CHAN_NUM 0 |
The topology channel number.
| #define GEOM_CHAN_NUM 1 |
The geometry channel number.
| #define TEXMAP_CHAN_NUM 2 |
The texture vertices and procedural mappings channels number.
| #define MTL_CHAN_NUM 3 |
This is no longer used.
| #define SELECT_CHAN_NUM 4 |
The sub-object selection channel number.
| #define SUBSEL_TYPE_CHAN_NUM 5 |
This is the current level of selection number.
| #define DISP_ATTRIB_CHAN_NUM 6 |
The display channel number.
| #define VERT_COLOR_CHAN_NUM 7 |
The vertex colors number. This is also used for the second mapping channel.
| #define GFX_DATA_CHAN_NUM 8 |
The stripping, edge list, etc. channel number.
| #define DISP_APPROX_CHAN_NUM 9 |
The displacement approximation channel number.
| #define EXTENSION_CHAN_NUM 10 |
The extension object channel number.
Developers tend to confuse these object channel numbers (TOPO_CHAN_NUM, GEOM_CHAN_NUM, etc.) and the channel bits (TOPO_CHANNEL, GEOM_CHANNEL, etc.). Some methods refer to the channel by number and some by bit. Developers must not confuse these two as the compiler will not catch this as an error. See Channels.