diff options
author | Hans Goudey <h.goudey@me.com> | 2021-05-03 20:29:17 +0300 |
---|---|---|
committer | Hans Goudey <h.goudey@me.com> | 2021-05-03 20:29:17 +0300 |
commit | 8216b759e9557c786e517aa64eee424fed0ac742 (patch) | |
tree | 561a8ed066e89a700fdbf6455b76e4007b132e5f /source/blender/makesrna | |
parent | c9d81678d7dd7da0ba8d2111f9575d16f00e6a5b (diff) |
Geometry Nodes: Initial basic curve data support
This patch adds initial curve support to geometry nodes. Currently
there is only one node available, the "Curve to Mesh" node, T87428.
However, the aim of the changes here is larger than just supporting
curve data in nodes-- it also uses the opportunity to add better spline
data structures, intended to replace the existing curve evaluation code.
The curve code in Blender is quite old, and it's generally regarded as
some of the messiest, hardest-to-understand code as well. The classes
in `BKE_spline.hh` aim to be faster, more extensible, and much more
easily understandable. Further explanation can be found in comments in
that file.
Initial builtin spline attributes are supported-- reading and writing
from the `cyclic` and `resolution` attributes works with any of the
attribute nodes. Also, only Z-up normal calculation is implemented
at the moment, and tilts do not apply yet.
**Limitations**
- For now, you must bring curves into the node tree with an "Object
Info" node. Changes to the curve modifier stack will come later.
- Converting to a mesh is necessary to visualize the curve data.
Further progress can be tracked in: T87245
Higher level design document: https://wiki.blender.org/wiki/Modules/Physics_Nodes/Projects/EverythingNodes/CurveNodes
Differential Revision: https://developer.blender.org/D11091
Diffstat (limited to 'source/blender/makesrna')
-rw-r--r-- | source/blender/makesrna/intern/rna_attribute.c | 3 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_space.c | 14 |
2 files changed, 16 insertions, 1 deletions
diff --git a/source/blender/makesrna/intern/rna_attribute.c b/source/blender/makesrna/intern/rna_attribute.c index b5d39157164..a256002ffc1 100644 --- a/source/blender/makesrna/intern/rna_attribute.c +++ b/source/blender/makesrna/intern/rna_attribute.c @@ -71,7 +71,7 @@ const EnumPropertyItem rna_enum_attribute_domain_items[] = { {ATTR_DOMAIN_CORNER, "CORNER", 0, "Face Corner", "Attribute on mesh face corner"}, /* Not implement yet */ // {ATTR_DOMAIN_GRIDS, "GRIDS", 0, "Grids", "Attribute on mesh multires grids"}, - {ATTR_DOMAIN_CURVE, "CURVE", 0, "Curve", "Attribute on hair curve"}, + {ATTR_DOMAIN_CURVE, "CURVE", 0, "Spline", "Attribute on spline"}, {0, NULL, 0, NULL, NULL}, }; @@ -81,6 +81,7 @@ const EnumPropertyItem rna_enum_attribute_domain_with_auto_items[] = { {ATTR_DOMAIN_EDGE, "EDGE", 0, "Edge", "Attribute on mesh edge"}, {ATTR_DOMAIN_FACE, "FACE", 0, "Face", "Attribute on mesh faces"}, {ATTR_DOMAIN_CORNER, "CORNER", 0, "Face Corner", "Attribute on mesh face corner"}, + {ATTR_DOMAIN_CURVE, "CURVE", 0, "Spline", "Attribute on spline"}, {0, NULL, 0, NULL, NULL}, }; diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c index 2a513691762..aa07ff4006a 100644 --- a/source/blender/makesrna/intern/rna_space.c +++ b/source/blender/makesrna/intern/rna_space.c @@ -3046,6 +3046,10 @@ static void rna_SpaceSpreadsheet_geometry_component_type_update(Main *UNUSED(bma if (sspreadsheet->geometry_component_type == GEO_COMPONENT_TYPE_POINT_CLOUD) { sspreadsheet->attribute_domain = ATTR_DOMAIN_POINT; } + if (sspreadsheet->geometry_component_type == GEO_COMPONENT_TYPE_CURVE && + !ELEM(sspreadsheet->attribute_domain, ATTR_DOMAIN_POINT, ATTR_DOMAIN_CURVE)) { + sspreadsheet->attribute_domain = ATTR_DOMAIN_POINT; + } } const EnumPropertyItem *rna_SpaceSpreadsheet_attribute_domain_itemf(bContext *UNUSED(C), @@ -3091,6 +3095,11 @@ const EnumPropertyItem *rna_SpaceSpreadsheet_attribute_domain_itemf(bContext *UN continue; } } + if (component_type == GEO_COMPONENT_TYPE_CURVE) { + if (!ELEM(item->value, ATTR_DOMAIN_POINT, ATTR_DOMAIN_CURVE)) { + continue; + } + } if (item->value == ATTR_DOMAIN_POINT && component_type == GEO_COMPONENT_TYPE_MESH) { RNA_enum_item_add(&item_array, &items_len, &mesh_vertex_domain_item); } @@ -7485,6 +7494,11 @@ static void rna_def_space_spreadsheet(BlenderRNA *brna) ICON_POINTCLOUD_DATA, "Point Cloud", "Point cloud component containing only point data"}, + {GEO_COMPONENT_TYPE_CURVE, + "CURVE", + ICON_CURVE_DATA, + "Curve", + "Curve component containing spline and control point data"}, {GEO_COMPONENT_TYPE_INSTANCES, "INSTANCES", ICON_EMPTY_AXIS, |